Control flow and matching
A for loop reads like a sentence. A processor needs a test, a body, a step, and an edge back to the test. The compiler builds that graph and places cleanup on every exit edge.
Follow one loop and branch
This program counts command-line arguments longer than two characters. MIR exposes the loop as numbered blocks and branches. LLVM adds concrete list access and safety checks. ARM64 turns the graph into compare-and-branch instructions.
Compiler traceFollow one program through four representations
compiler build information
Luce source. Names and indentation describe the program for a reader.
open source file
func main(args: list[str]):
var total = 0
for argument in args:
if len(argument) > 2:
total += 1
print(str(total))
Luce MIR. Types, registers, blocks, calls, and lifetime operations form the instruction plan sent to the LLVM backend.
open MIR fileMIR instruction guide hover, focus, or tap dotted terms
r7 is one typed intermediate value, %2 is a local storage slot, and b1 is a basic block. Read each block from top to bottom, then follow its final control-flow instruction.
Hover or focus a dotted term in the file for its explanation. On a touch screen, tap a term to keep the note open and tap elsewhere to close it. The list includes the operations that appear in this file.
func …- Starts one MIR function and lists the source-level parameters with their resolved types.
local %N- Reserves a typed local slot. The slot gives later blocks a stable place to read or replace.
b0, b1, …- Names a basic block. Control enters at the label and runs until a branch, jump, trap, or return chooses what happens next.
r0, r1, …- Names one typed intermediate result. Each register is assigned once, which makes data flow explicit.
local_get- Reads a local slot into a fresh MIR register so this use has a precise value and type.
local_set- Writes a register into a local slot. Later blocks read that slot after control-flow paths join.
const- Creates a typed literal such as 2 or 10 inside the instruction stream.
add.i64- Adds two signed 64-bit integers. The type suffix selects the overflow and representation rules.
greater.i64- Compares two signed 64-bit values and produces a Boolean register for a later branch.
less.i64- Tests signed less-than and produces a Boolean register.
intrinsic NAME- Invokes a language operation with runtime rules recorded by the compiler. The name identifies the operation.
intrinsic len- Reads the logical length defined by the value's type, such as argument count or Unicode-scalar count.
intrinsic str_value- Converts a typed value into owned text through Luce's string conversion rules.
intrinsic print- Sends text through the installed host output capability.
intrinsic index_get- Checks an index and loads the selected element using the collection's value representation.
intrinsic drop_storage- Releases any reference held by a temporary value and leaves that temporary in its empty state.
branch CONDITION, TRUE, FALSE- Chooses one of two basic blocks from a Boolean register.
jump BLOCK- Continues execution at one known basic block.
ret- Returns the current function's result to its caller and closes the current control-flow path.
func main(args: list[str]) -> None
local %1 total: i64
local %2 (temporary): list[str]
local %3 (temporary): i64
local %4 argument: str
local %5 (temporary): str
b0:
r0 = const 0
local_set %1, r0
r2 = local_get %0
local_set %2, r2
r4 = const 0
local_set %3, r4
jump b1
b1:
r7 = local_get %2
r8 = intrinsic len, r7
r9 = local_get %3
r10 = less.i64 r9, r8
branch r10, b2, b4
b2:
r12 = local_get %2
r13 = local_get %3
r14 = intrinsic index_get, r12, r13
local_set %4, r14
r16 = local_get %4
r17 = intrinsic len, r16
r18 = const 2
r19 = greater.i64 r17, r18
branch r19, b5, b6
b3:
r27 = local_get %3
r28 = const 1
r29 = add.i64 r27, r28
local_set %3, r29
jump b1
b4:
r32 = local_get %1
r33 = intrinsic str_value, r32
local_set %5, r33
intrinsic print, r33
r36 = local_get %5
r37 = intrinsic drop_storage, r36
local_set %5, r37
ret
b5:
r21 = const 1
r22 = local_get %1
r23 = add.i64 r22, r21
local_set %1, r23
jump b6
b6:
jump b3
LLVM IR. The backend expands MIR into typed memory operations, calls, checks, and control-flow blocks for LLVM.
open LLVM IR fileLLVM IR instruction guide hover, focus, or tap dotted terms
%7 is an SSA value, i64 is a 64-bit integer type, ptr is a pointer, and @name is a module symbol. Numbered labels divide the function into basic blocks.
Hover or focus a dotted term in the file for its explanation. On a touch screen, tap a term to keep the note open and tap elsewhere to close it. The list includes the operations that appear in this file.
@name = …- Defines module data such as text constants, source positions, function records, and the artifact identity tag.
define … @name- Begins a generated function. The parameter attributes tell LLVM which pointers are valid, writable, or read-only.
declare … @name- Declares a runtime or LLVM helper whose body is provided elsewhere.
numeric label- Starts an LLVM basic block. Every branch names one of these labels as its destination.
%0, %1, …- Names an SSA value. Each name is assigned once, allowing LLVM to trace definitions and uses directly.
alloca- Reserves a stack slot for a local value, return area, or temporary aggregate.
getelementptr- Calculates the address of a field or indexed element while preserving LLVM's type and bounds information.
load- Copies a typed value from memory into an SSA value.
store- Copies an SSA value into a stack slot, object field, return area, or runtime structure.
icmp- Compares integers or pointers and produces the one-bit condition consumed by a branch or select.
br- Transfers control to another block. With an
i1operand it chooses between two destinations. select- Chooses one of two SSA values from a condition, which can become a branch-free machine instruction.
call- Invokes a generated function, a runtime helper, a host callback, or an LLVM intrinsic.
extractvalue- Reads one field from an SSA aggregate, such as the result and overflow bit returned together.
insertvalue- Builds an SSA aggregate one field at a time.
ptrtoint- Encodes a pointer as an integer field inside Luce's uniform runtime value representation.
inttoptr- Recovers a pointer from the integer field of Luce's uniform runtime value representation.
zext- Widens an unsigned value by filling the new high bits with zero.
trunc- Keeps the low bits while converting to a narrower integer representation.
lshr- Shifts bits right and fills the high side with zero; this is useful for unpacking handle fields.
and- Combines or masks bits, often to inspect a flag in a packed handle or status value.
or- Sets or combines bits in a packed value.
add- Adds integer values or address-related offsets under the flags attached to the instruction.
mul- Multiplies integers after the language-specific checks have been represented.
ret- Returns a status or value and ends the current basic block.
@llvm.sadd.with.overflow.i64- Returns a signed sum together with the overflow bit required by checked addition.
@llvm.memcpy.inline- Copies a small fixed-size value representation; LLVM can expand it directly for the target.
@luce_rt_open- Creates the per-run runtime state and installs the table used to turn function numbers into source-aware traces.
@luce_rt_close- Closes the per-run runtime state after the final status and reports have been collected.
@luce_rt_args_list- Builds the owned
list[str]passed tomainfrom the host's argument callbacks. @luce_rt_status- Combines the generated function result with runtime trap, error, exhaustion, and exit state.
@luce_rt_report_error- Sends an uncaught recoverable error through the host's error-report callback.
@luce_rt_report- Sends the completed trap report through the host callback selected by the entry wrapper.
@luce_rt_leaked- Reads the live-object count used to detect references that remain after program cleanup.
@luce_rt_exhaust- Records allocation exhaustion in the current run so the entry wrapper returns the corresponding status.
@luce_rt_raise- Records a source-aware trap in the runtime so every execution path reports the same code and location.
@luce_rt_unwound- Adds one generated function frame while a trap or uncaught error travels toward the entry point.
@luce_rt_release- Removes a strong owner and triggers destruction at zero.
@luce_rt_drop_storage- Releases reference-bearing fields in a temporary runtime value.
@luce_rt_str- Converts a uniform runtime value into owned UTF-8 text.
@luce_rt_len- Reads the logical length for the supplied runtime value, including Unicode-scalar length for strings.
@luce_rt_files_install- Copies file-related callbacks from the host table into the current runtime context.
@luce_rt_sockets_install- Copies network callbacks from the host table into the current runtime context.
@luce_rt_graphics_install- Copies window and graphics callbacks from the host table into the current runtime context.
!prof- Attaches branch-probability metadata so LLVM can place common and failure paths efficiently.
; ModuleID = '/Users/sedov/Dev/luciaos/www/lucelang/examples/control.luc'
source_filename = "/Users/sedov/Dev/luciaos/www/lucelang/examples/control.luc"
target triple = "arm64-apple-darwin24.6.0"
@luce.text.0 = private unnamed_addr constant [0 x i8] zeroinitializer
@luce.dead.row = private constant <{ [96 x i8], i32, [12 x i8] }> <{ [96 x i8] zeroinitializer, i32 -1, [12 x i8] zeroinitializer }>, align 8
@luce.text.1 = private unnamed_addr constant [21 x i8] c"null object reference"
@luce.text.2 = private unnamed_addr constant [22 x i8] c"object used after free"
@luce.text.3 = private unnamed_addr constant [19 x i8] c"index out of bounds"
@luce.text.4 = private unnamed_addr constant [16 x i8] c"integer overflow"
@luce.text.5 = private unnamed_addr constant [24 x i8] c"host service unavailable"
@luce.text.6 = private unnamed_addr constant [4 x i8] c"main"
@luce.text.7 = private unnamed_addr constant [58 x i8] c"/Users/sedov/Dev/luciaos/www/lucelang/examples/control.luc"
@luce.origins.0 = private constant [40 x { i32, i32 }] [{ i32, i32 } { i32 2, i32 5 }, { i32, i32 } { i32 2, i32 5 }, { i32, i32 } { i32 3, i32 5 }, { i32, i32 } { i32 3, i32 5 }, { i32, i32 } { i32 3, i32 5 }, { i32, i32 } { i32 3, i32 5 }, { i32, i32 } { i32 3, i32 5 }, { i32, i32 } { i32 3, i32 5 }, { i32, i32 } { i32 3, i32 5 }, { i32, i32 } { i32 3, i32 5 }, { i32, i32 } { i32 3, i32 5 }, { i32, i32 } { i32 3, i32 5 }, { i32, i32 } { i32 3, i32 5 }, { i32, i32 } { i32 3, i32 5 }, { i32, i32 } { i32 3, i32 5 }, { i32, i32 } { i32 3, i32 5 }, { i32, i32 } { i32 4, i32 9 }, { i32, i32 } { i32 4, i32 9 }, { i32, i32 } { i32 4, i32 9 }, { i32, i32 } { i32 4, i32 9 }, { i32, i32 } { i32 4, i32 9 }, { i32, i32 } { i32 5, i32 13 }, { i32, i32 } { i32 5, i32 13 }, { i32, i32 } { i32 5, i32 13 }, { i32, i32 } { i32 5, i32 13 }, { i32, i32 } { i32 5, i32 13 }, { i32, i32 } { i32 5, i32 13 }, { i32, i32 } { i32 5, i32 13 }, { i32, i32 } { i32 5, i32 13 }, { i32, i32 } { i32 5, i32 13 }, { i32, i32 } { i32 5, i32 13 }, { i32, i32 } { i32 5, i32 13 }, { i32, i32 } { i32 6, i32 5 }, { i32, i32 } { i32 6, i32 5 }, { i32, i32 } { i32 6, i32 5 }, { i32, i32 } { i32 6, i32 5 }, { i32, i32 } { i32 6, i32 5 }, { i32, i32 } { i32 6, i32 5 }, { i32, i32 } { i32 6, i32 5 }, { i32, i32 } { i32 6, i32 5 }]
@luce.functions = private constant [1 x { ptr, i64, ptr, i64, ptr, i64 }] [{ ptr, i64, ptr, i64, ptr, i64 } { ptr @luce.text.6, i64 4, ptr @luce.text.7, i64 58, ptr @luce.origins.0, i64 40 }]
@luce.text.8 = private unnamed_addr constant [19 x i8] c"call depth exceeded"
@luce_artifact = constant { i64, i64, i64, i32, i32, i32, i32, { i32, [52 x i8] } } { i64 23734338332087628, i64 0, i64 -7092229304759745108, i32 3, i32 29, i32 1, i32 0, { i32, [52 x i8] } { i32 18, [52 x i8] c"aarch64-macos-none\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00" } }
define internal i32 @luce.0.main(ptr align 8 nocapture readonly nonnull dereferenceable(472) noundef %0, ptr align 8 nocapture nonnull noundef %1, i64 noundef %2, i64 %3) {
4:
%5 = alloca i64, align 8
%6 = alloca i64, align 8
%7 = alloca i64, align 8
%8 = alloca i64, align 8
%9 = alloca { ptr, i64 }, align 8
%10 = alloca { i8, i8, [6 x i8], i64, i64 }, align 8
store i64 %3, ptr %5, align 8
store i64 0, ptr %6, align 8
store i64 4294967295, ptr %7, align 8
store i64 0, ptr %8, align 8
store { ptr, i64 } { ptr @luce.text.0, i64 0 }, ptr %9, align 8
%11 = getelementptr inbounds { i8, i8, [6 x i8], i64, i64 }, ptr %10, i32 0, i32 0
store i8 4, ptr %11, align 1
%12 = getelementptr inbounds { i8, i8, [6 x i8], i64, i64 }, ptr %10, i32 0, i32 1
store i8 -1, ptr %12, align 1
%13 = extractvalue { ptr, i64 } { ptr @luce.text.0, i64 0 }, 0
%14 = ptrtoint ptr %13 to i64
%15 = getelementptr inbounds { i8, i8, [6 x i8], i64, i64 }, ptr %10, i32 0, i32 3
store i64 %14, ptr %15, align 8
%16 = extractvalue { ptr, i64 } { ptr @luce.text.0, i64 0 }, 1
%17 = getelementptr inbounds { i8, i8, [6 x i8], i64, i64 }, ptr %10, i32 0, i32 4
store i64 %16, ptr %17, align 8
%18 = alloca { i8, i8, [6 x i8], i64, i64 }, align 8
%19 = getelementptr inbounds { i8, i8, [6 x i8], i64, i64 }, ptr %18, i32 0, i32 0
store i8 4, ptr %19, align 1
%20 = getelementptr inbounds { i8, i8, [6 x i8], i64, i64 }, ptr %18, i32 0, i32 1
store i8 -1, ptr %20, align 1
%21 = alloca { i8, i8, [6 x i8], i64, i64 }, align 8
%22 = alloca { i8, i8, [6 x i8], i64, i64 }, align 8
%23 = getelementptr inbounds { i8, i8, [6 x i8], i64, i64 }, ptr %22, i32 0, i32 0
store i8 2, ptr %23, align 1
%24 = getelementptr inbounds { i8, i8, [6 x i8], i64, i64 }, ptr %22, i32 0, i32 4
store i64 0, ptr %24, align 8
%25 = alloca { i8, i8, [6 x i8], i64, i64 }, align 8
%26 = alloca { i8, i8, [6 x i8], i64, i64 }, align 8
br label %27
27:
store i64 0, ptr %6, align 8
%28 = load i64, ptr %5, align 8
store i64 %28, ptr %7, align 8
store i64 0, ptr %8, align 8
%29 = load i64, ptr %7, align 8
%30 = trunc i64 %29 to i32
%31 = lshr i64 %29, 32
%32 = trunc i64 %31 to i32
%33 = getelementptr inbounds i8, ptr %1, i64 96
%34 = load ptr, ptr %33, align 8!alias.scope !0, !noalias !1
%35 = icmp eq i32 %30, -1
%36 = zext i32 %30 to i64
%37 = mul nsw i64 %36, 112
%38 = getelementptr inbounds i8, ptr %34, i64 %37
%39 = select i1 %35, ptr @luce.dead.row, ptr %38
%40 = getelementptr inbounds i8, ptr %39, i64 96
%41 = load i32, ptr %40, align 4, !alias.scope !0, !noalias !1
%42 = load ptr, ptr %39, align 8, !alias.scope !0, !noalias !1
%43 = getelementptr inbounds i8, ptr %39, i64 16
%44 = load i64, ptr %43, align 8, !alias.scope !0, !noalias !1
br label %45
45:
%46 = load i64, ptr %7, align 8
%47 = trunc i64 %46 to i32
%48 = lshr i64 %46, 32
%49 = trunc i64 %48 to i32
%50 = icmp eq i32 %47, -1
br i1 %50, label %74, label %77, !prof !2
51:
%52 = load i64, ptr %7, align 8
%53 = load i64, ptr %8, align 8
%54 = trunc i64 %52 to i32
%55 = lshr i64 %52, 32
%56 = trunc i64 %55 to i32
%57 = icmp eq i32 %54, -1
br i1 %57, label %91, label %94, !prof !2
58:
%59 = load i64, ptr %8, align 8
%60 = call { i64, i1 } @llvm.sadd.with.overflow.i64(i64 %59, i64 1)
%61 = extractvalue { i64, i1 } %60, 0
%62 = extractvalue { i64, i1 } %60, 1
br i1 %62, label %143, label %146, !prof !2
63:
%64 = load i64, ptr %6, align 8
%65 = getelementptr inbounds { i8, i8, [6 x i8], i64, i64 }, ptr %22, i32 0, i32 3
store i64 %64, ptr %65, align 8
%66 = call i32 @luce_rt_str(ptr %1, ptr %22, ptr %25)
%67 = icmp ne i32 %66, 0
br i1 %67, label %147, label %148, !prof !2
68:
%69 = load i64, ptr %6, align 8
%70 = call { i64, i1 } @llvm.sadd.with.overflow.i64(i64 %69, i64 1)
%71 = extractvalue { i64, i1 } %70, 0
%72 = extractvalue { i64, i1 } %70, 1
br i1 %72, label %213, label %216, !prof !2
73:
br label %58
74:
%75 = extractvalue { ptr, i64 } { ptr @luce.text.1, i64 21 }, 0
%76 = extractvalue { ptr, i64 } { ptr @luce.text.1, i64 21 }, 1
call void @luce_rt_raise(ptr %1, i32 14, ptr %75, i64 %76)
call void @luce_rt_unwound(ptr %1, i32 0, i32 8)
ret i32 1
77:
%78 = icmp ne i32 %41, %49
br i1 %78, label %79, label %82, !prof !2
79:
%80 = extractvalue { ptr, i64 } { ptr @luce.text.2, i64 22 }, 0
%81 = extractvalue { ptr, i64 } { ptr @luce.text.2, i64 22 }, 1
call void @luce_rt_raise(ptr %1, i32 13, ptr %80, i64 %81)
call void @luce_rt_unwound(ptr %1, i32 0, i32 8)
ret i32 1
82:
%83 = and i32 %41, 1
%84 = icmp ne i32 %83, 0
br i1 %84, label %85, label %88, !prof !2
85:
%86 = extractvalue { ptr, i64 } { ptr @luce.text.2, i64 22 }, 0
%87 = extractvalue { ptr, i64 } { ptr @luce.text.2, i64 22 }, 1
call void @luce_rt_raise(ptr %1, i32 13, ptr %86, i64 %87)
call void @luce_rt_unwound(ptr %1, i32 0, i32 8)
ret i32 1
88:
%89 = load i64, ptr %8, align 8
%90 = icmp slt i64 %89, %44
br i1 %90, label %51, label %63
91:
%92 = extractvalue { ptr, i64 } { ptr @luce.text.1, i64 21 }, 0
%93 = extractvalue { ptr, i64 } { ptr @luce.text.1, i64 21 }, 1
call void @luce_rt_raise(ptr %1, i32 14, ptr %92, i64 %93)
call void @luce_rt_unwound(ptr %1, i32 0, i32 14)
ret i32 1
94:
%95 = icmp ne i32 %41, %56
br i1 %95, label %96, label %99, !prof !2
96:
%97 = extractvalue { ptr, i64 } { ptr @luce.text.2, i64 22 }, 0
%98 = extractvalue { ptr, i64 } { ptr @luce.text.2, i64 22 }, 1
call void @luce_rt_raise(ptr %1, i32 13, ptr %97, i64 %98)
call void @luce_rt_unwound(ptr %1, i32 0, i32 14)
ret i32 1
99:
%100 = and i32 %41, 1
%101 = icmp ne i32 %100, 0
br i1 %101, label %102, label %105, !prof !2
102:
%103 = extractvalue { ptr, i64 } { ptr @luce.text.2, i64 22 }, 0
%104 = extractvalue { ptr, i64 } { ptr @luce.text.2, i64 22 }, 1
call void @luce_rt_raise(ptr %1, i32 13, ptr %103, i64 %104)
call void @luce_rt_unwound(ptr %1, i32 0, i32 14)
ret i32 1
105:
%106 = icmp slt i64 %53, 0
%107 = icmp sge i64 %53, %44
%108 = or i1 %106, %107
br i1 %108, label %109, label %112, !prof !2
109:
%110 = extractvalue { ptr, i64 } { ptr @luce.text.3, i64 19 }, 0
%111 = extractvalue { ptr, i64 } { ptr @luce.text.3, i64 19 }, 1
call void @luce_rt_raise(ptr %1, i32 10, ptr %110, i64 %111)
call void @luce_rt_unwound(ptr %1, i32 0, i32 14)
ret i32 1
112:
%113 = mul nsw i64 0, %44
%114 = add nsw i64 %113, %53
%115 = getelementptr inbounds { i8, i8, [6 x i8], i64, i64 }, ptr %42, i64 %114
%116 = getelementptr inbounds { i8, i8, [6 x i8], i64, i64 }, ptr %115, i32 0, i32 3
%117 = load i64, ptr %116, align 8
%118 = getelementptr inbounds { i8, i8, [6 x i8], i64, i64 }, ptr %115, i32 0, i32 1
%119 = load i8, ptr %118, align 1
%120 = icmp eq i8 %119, -1
%121 = inttoptr i64 %117 to ptr
%122 = getelementptr inbounds { i8, i8, [6 x i8], i64, i64 }, ptr %115, i32 0, i32 2
%123 = select i1 %120, ptr %121, ptr %122
%124 = getelementptr inbounds { i8, i8, [6 x i8], i64, i64 }, ptr %115, i32 0, i32 4
%125 = load i64, ptr %124, align 8
%126 = zext i8 %119 to i64
%127 = select i1 %120, i64 %125, i64 %126
%128 = insertvalue { ptr, i64 } poison, ptr %123, 0
%129 = insertvalue { ptr, i64 } %128, i64 %127, 1
store { ptr, i64 } %129, ptr %9, align 8
%130 = load { ptr, i64 }, ptr %9, align 8
%131 = extractvalue { ptr, i64 } %130, 0
%132 = ptrtoint ptr %131 to i64
%133 = getelementptr inbounds { i8, i8, [6 x i8], i64, i64 }, ptr %18, i32 0, i32 3
store i64 %132, ptr %133, align 8
%134 = extractvalue { ptr, i64 } %130, 1
%135 = getelementptr inbounds { i8, i8, [6 x i8], i64, i64 }, ptr %18, i32 0, i32 4
store i64 %134, ptr %135, align 8
%136 = call i32 @luce_rt_len(ptr %1, ptr %18, ptr %21)
%137 = icmp ne i32 %136, 0
br i1 %137, label %138, label %139, !prof !2
138:
call void @luce_rt_unwound(ptr %1, i32 0, i32 17)
ret i32 1
139:
%140 = getelementptr inbounds { i8, i8, [6 x i8], i64, i64 }, ptr %21, i32 0, i32 3
%141 = load i64, ptr %140, align 8
%142 = icmp sgt i64 %141, 2
br i1 %142, label %68, label %73
143:
%144 = extractvalue { ptr, i64 } { ptr @luce.text.4, i64 16 }, 0
%145 = extractvalue { ptr, i64 } { ptr @luce.text.4, i64 16 }, 1
call void @luce_rt_raise(ptr %1, i32 0, ptr %144, i64 %145)
call void @luce_rt_unwound(ptr %1, i32 0, i32 29)
ret i32 1
146:
store i64 %61, ptr %8, align 8
br label %45
147:
call void @luce_rt_unwound(ptr %1, i32 0, i32 33)
ret i32 1
148:
%149 = getelementptr inbounds { i8, i8, [6 x i8], i64, i64 }, ptr %25, i32 0, i32 3
%150 = load i64, ptr %149, align 8
%151 = getelementptr inbounds { i8, i8, [6 x i8], i64, i64 }, ptr %25, i32 0, i32 1
%152 = load i8, ptr %151, align 1
%153 = icmp eq i8 %152, -1
%154 = inttoptr i64 %150 to ptr
%155 = getelementptr inbounds { i8, i8, [6 x i8], i64, i64 }, ptr %25, i32 0, i32 2
%156 = select i1 %153, ptr %154, ptr %155
%157 = getelementptr inbounds { i8, i8, [6 x i8], i64, i64 }, ptr %25, i32 0, i32 4
%158 = load i64, ptr %157, align 8
%159 = zext i8 %152 to i64
%160 = select i1 %153, i64 %158, i64 %159
%161 = insertvalue { ptr, i64 } poison, ptr %156, 0
%162 = insertvalue { ptr, i64 } %161, i64 %160, 1
call void @llvm.memcpy.inline.p0.p0.i64(ptr align 8 %10, ptr align 8 %25, i64 24, i1 false)
%163 = extractvalue { ptr, i64 } %162, 0
%164 = extractvalue { ptr, i64 } %162, 1
%165 = getelementptr inbounds { ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }, ptr %0, i32 0, i32 1
%166 = load ptr, ptr %165, align 8
%167 = icmp eq ptr %166, null
br i1 %167, label %168, label %171, !prof !2
168:
%169 = extractvalue { ptr, i64 } { ptr @luce.text.5, i64 24 }, 0
%170 = extractvalue { ptr, i64 } { ptr @luce.text.5, i64 24 }, 1
call void @luce_rt_raise(ptr %1, i32 9, ptr %169, i64 %170)
call void @luce_rt_unwound(ptr %1, i32 0, i32 35)
ret i32 1
171:
%172 = getelementptr inbounds { ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }, ptr %0, i32 0, i32 0
%173 = load ptr, ptr %172, align 8
%174 = call i32 %166(ptr %173, ptr %163, i64 %164)
%175 = icmp eq i32 %174, -1
br i1 %175, label %176, label %177, !prof !2
176:
call void @luce_rt_exhaust(ptr %1)
ret i32 1
177:
%178 = icmp ne i32 %174, 0
%179 = icmp ne i32 %174, 1
%180 = and i1 %178, %179
br i1 %180, label %181, label %184, !prof !2
181:
%182 = extractvalue { ptr, i64 } { ptr @luce.text.5, i64 24 }, 0
%183 = extractvalue { ptr, i64 } { ptr @luce.text.5, i64 24 }, 1
call void @luce_rt_raise(ptr %1, i32 9, ptr %182, i64 %183)
call void @luce_rt_unwound(ptr %1, i32 0, i32 35)
ret i32 1
184:
%185 = getelementptr inbounds { i8, i8, [6 x i8], i64, i64 }, ptr %10, i32 0, i32 3
%186 = load i64, ptr %185, align 8
%187 = getelementptr inbounds { i8, i8, [6 x i8], i64, i64 }, ptr %10, i32 0, i32 1
%188 = load i8, ptr %187, align 1
%189 = icmp eq i8 %188, -1
%190 = inttoptr i64 %186 to ptr
%191 = getelementptr inbounds { i8, i8, [6 x i8], i64, i64 }, ptr %10, i32 0, i32 2
%192 = select i1 %189, ptr %190, ptr %191
%193 = getelementptr inbounds { i8, i8, [6 x i8], i64, i64 }, ptr %10, i32 0, i32 4
%194 = load i64, ptr %193, align 8
%195 = zext i8 %188 to i64
%196 = select i1 %189, i64 %194, i64 %195
%197 = insertvalue { ptr, i64 } poison, ptr %192, 0
%198 = insertvalue { ptr, i64 } %197, i64 %196, 1
call void @luce_rt_drop_storage(ptr %1, ptr %10, ptr %26)
%199 = getelementptr inbounds { i8, i8, [6 x i8], i64, i64 }, ptr %26, i32 0, i32 3
%200 = load i64, ptr %199, align 8
%201 = getelementptr inbounds { i8, i8, [6 x i8], i64, i64 }, ptr %26, i32 0, i32 1
%202 = load i8, ptr %201, align 1
%203 = icmp eq i8 %202, -1
%204 = inttoptr i64 %200 to ptr
%205 = getelementptr inbounds { i8, i8, [6 x i8], i64, i64 }, ptr %26, i32 0, i32 2
%206 = select i1 %203, ptr %204, ptr %205
%207 = getelementptr inbounds { i8, i8, [6 x i8], i64, i64 }, ptr %26, i32 0, i32 4
%208 = load i64, ptr %207, align 8
%209 = zext i8 %202 to i64
%210 = select i1 %203, i64 %208, i64 %209
%211 = insertvalue { ptr, i64 } poison, ptr %206, 0
%212 = insertvalue { ptr, i64 } %211, i64 %210, 1
call void @llvm.memcpy.inline.p0.p0.i64(ptr align 8 %10, ptr align 8 %26, i64 24, i1 false)
ret i32 0
213:
%214 = extractvalue { ptr, i64 } { ptr @luce.text.4, i64 16 }, 0
%215 = extractvalue { ptr, i64 } { ptr @luce.text.4, i64 16 }, 1
call void @luce_rt_raise(ptr %1, i32 0, ptr %214, i64 %215)
call void @luce_rt_unwound(ptr %1, i32 0, i32 23)
ret i32 1
216:
store i64 %71, ptr %6, align 8
br label %73
}
; Function Attrs: nounwind cold willreturn memory(argmem: readwrite, inaccessiblemem: readwrite)
declare void @luce_rt_raise(ptr nocapture nonnull noundef %0, i32 %1, ptr nocapture readonly %2, i64 %3) #0
; Function Attrs: nounwind cold willreturn memory(argmem: readwrite, inaccessiblemem: readwrite)
declare void @luce_rt_unwound(ptr nocapture nonnull noundef %0, i32 %1, i32 %2) #0
; Function Attrs: nounwind willreturn memory(read, argmem: readwrite)
declare i32 @luce_rt_len(ptr nocapture nonnull noundef %0, ptr align 8 nocapture readonly nonnull dereferenceable(24) noundef %1, ptr align 8 nocapture nonnull dereferenceable(24) writeonly noundef %2) #1
; Function Attrs: nounwind speculatable willreturn nofree nosync nocallback memory(none)
declare { i64, i1 } @llvm.sadd.with.overflow.i64(i64 %0, i64 %1) #2
; Function Attrs: nounwind willreturn memory(read, argmem: readwrite, inaccessiblemem: readwrite)
declare i32 @luce_rt_str(ptr nocapture nonnull noundef %0, ptr align 8 nocapture readonly nonnull dereferenceable(24) noundef %1, ptr align 8 nocapture nonnull dereferenceable(24) writeonly noundef %2) #3
; Function Attrs: nounwind willreturn nofree nocallback memory(argmem: readwrite)
declare void @llvm.memcpy.inline.p0.p0.i64(ptr noalias nocapture writeonly %0, ptr noalias nocapture readonly %1, i64 %2, i1 immarg %3) #4
; Function Attrs: nounwind cold willreturn memory(argmem: write)
declare void @luce_rt_exhaust(ptr nocapture nonnull noundef %0) #5
; Function Attrs: nounwind willreturn memory(argmem: readwrite, inaccessiblemem: readwrite)
declare void @luce_rt_drop_storage(ptr nocapture nonnull noundef %0, ptr align 8 nocapture readonly nonnull dereferenceable(24) noundef %1, ptr align 8 nocapture nonnull dereferenceable(24) writeonly noundef %2) #6
define i32 @luce_main(ptr align 8 nocapture readonly nonnull dereferenceable(472) noundef %0) {
1:
%2 = alloca i64, align 8
%3 = alloca i32, align 8
store i64 256, ptr %2, align 8
%4 = getelementptr inbounds { ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }, ptr %0, i32 0, i32 0
%5 = load ptr, ptr %4, align 8
%6 = getelementptr inbounds { ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }, ptr %0, i32 0, i32 14
%7 = load ptr, ptr %6, align 8
%8 = icmp eq ptr %7, null
br i1 %8, label %11, label %9
9:
%10 = call i64 %7(ptr %5)
store i64 %10, ptr %2, align 8
br label %11
11:
%12 = load i64, ptr %2, align 8
%13 = call ptr @luce_rt_open(ptr @luce.functions, i64 1)
%14 = icmp eq ptr %13, null
br i1 %14, label %15, label %16, !prof !2
15:
ret i32 2
16:
%17 = getelementptr inbounds { ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }, ptr %0, i32 0, i32 28
%18 = load ptr, ptr %17, align 8
%19 = getelementptr inbounds { ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }, ptr %0, i32 0, i32 54
%20 = load ptr, ptr %19, align 8
%21 = getelementptr inbounds { ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }, ptr %0, i32 0, i32 55
%22 = load ptr, ptr %21, align 8
%23 = getelementptr inbounds { ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }, ptr %0, i32 0, i32 56
%24 = load ptr, ptr %23, align 8
%25 = getelementptr inbounds { ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }, ptr %0, i32 0, i32 57
%26 = load ptr, ptr %25, align 8
%27 = getelementptr inbounds { ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }, ptr %0, i32 0, i32 58
%28 = load ptr, ptr %27, align 8
%29 = getelementptr inbounds { ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }, ptr %0, i32 0, i32 29
%30 = load ptr, ptr %29, align 8
%31 = getelementptr inbounds { ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }, ptr %0, i32 0, i32 30
%32 = load ptr, ptr %31, align 8
%33 = getelementptr inbounds { ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }, ptr %0, i32 0, i32 31
%34 = load ptr, ptr %33, align 8
%35 = getelementptr inbounds { ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }, ptr %0, i32 0, i32 32
%36 = load ptr, ptr %35, align 8
call void @luce_rt_files_install(ptr %13, ptr %5, ptr %18, ptr %20, ptr %22, ptr %24, ptr %26, ptr %28, ptr %30, ptr %32, ptr %34, ptr %36)
%37 = getelementptr inbounds { ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }, ptr %0, i32 0, i32 48
%38 = load ptr, ptr %37, align 8
%39 = getelementptr inbounds { ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }, ptr %0, i32 0, i32 49
%40 = load ptr, ptr %39, align 8
%41 = getelementptr inbounds { ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }, ptr %0, i32 0, i32 50
%42 = load ptr, ptr %41, align 8
%43 = getelementptr inbounds { ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }, ptr %0, i32 0, i32 51
%44 = load ptr, ptr %43, align 8
%45 = getelementptr inbounds { ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }, ptr %0, i32 0, i32 52
%46 = load ptr, ptr %45, align 8
call void @luce_rt_sockets_install(ptr %13, ptr %5, ptr %38, ptr %40, ptr %42, ptr %44, ptr %46)
%47 = getelementptr inbounds { ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }, ptr %0, i32 0, i32 40
%48 = load ptr, ptr %47, align 8
%49 = getelementptr inbounds { ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }, ptr %0, i32 0, i32 41
%50 = load ptr, ptr %49, align 8
%51 = getelementptr inbounds { ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }, ptr %0, i32 0, i32 42
%52 = load ptr, ptr %51, align 8
%53 = getelementptr inbounds { ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }, ptr %0, i32 0, i32 43
%54 = load ptr, ptr %53, align 8
%55 = getelementptr inbounds { ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }, ptr %0, i32 0, i32 44
%56 = load ptr, ptr %55, align 8
%57 = getelementptr inbounds { ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }, ptr %0, i32 0, i32 45
%58 = load ptr, ptr %57, align 8
%59 = getelementptr inbounds { ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }, ptr %0, i32 0, i32 46
%60 = load ptr, ptr %59, align 8
%61 = getelementptr inbounds { ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }, ptr %0, i32 0, i32 47
%62 = load ptr, ptr %61, align 8
call void @luce_rt_graphics_install(ptr %13, ptr %5, ptr %48, ptr %50, ptr %52, ptr %54, ptr %56, ptr %58, ptr %60, ptr %62)
%63 = icmp slt i64 %12, 1
br i1 %63, label %64, label %65, !prof !2
64:
call void @luce_rt_raise(ptr %13, i32 6, ptr @luce.text.8, i64 19)
store i32 1, ptr %3, align 8
br label %73
65:
%66 = alloca { i8, i8, [6 x i8], i64, i64 }, align 8
%67 = getelementptr inbounds { ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }, ptr %0, i32 0, i32 4
%68 = load ptr, ptr %67, align 8
%69 = getelementptr inbounds { ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }, ptr %0, i32 0, i32 5
%70 = load ptr, ptr %69, align 8
%71 = call i32 @luce_rt_args_list(ptr %13, ptr %5, ptr %68, ptr %70, ptr %66)
%72 = icmp ne i32 %71, 0
br i1 %72, label %77, label %78, !prof !2
73:
%74 = load i32, ptr %3, align 8
%75 = icmp eq i32 %74, 1
%76 = icmp eq i32 %74, 2
br i1 %75, label %83, label %86, !prof !2
77:
store i32 1, ptr %3, align 8
br label %73
78:
%79 = getelementptr inbounds { i8, i8, [6 x i8], i64, i64 }, ptr %66, i32 0, i32 3
%80 = load i64, ptr %79, align 8
%81 = call i32 @luce.0.main(ptr %0, ptr %13, i64 %12, i64 %80)
store i32 %81, ptr %3, align 8
%82 = call i32 @luce_rt_release(ptr %13, ptr %66)
br label %73
83:
%84 = getelementptr inbounds { ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }, ptr %0, i32 0, i32 2
%85 = load ptr, ptr %84, align 8
call void @luce_rt_report(ptr %13, ptr %5, ptr %85)
br label %86
86:
br i1 %76, label %87, label %90, !prof !2
87:
%88 = getelementptr inbounds { ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }, ptr %0, i32 0, i32 15
%89 = load ptr, ptr %88, align 8
call void @luce_rt_report_error(ptr %13, ptr %5, ptr %89)
br label %90
90:
%91 = call i32 @luce_rt_status(ptr %13, i32 %74)
%92 = icmp eq i32 %91, 2
%93 = getelementptr inbounds { ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }, ptr %0, i32 0, i32 3
%94 = load ptr, ptr %93, align 8
%95 = icmp eq ptr %94, null
%96 = or i1 %95, %92
br i1 %96, label %97, label %98
97:
call void @luce_rt_close(ptr %13)
ret i32 %91
98:
%99 = call i64 @luce_rt_leaked(ptr %13)
call void %94(ptr %5, i64 %99)
br label %97
}
; Function Attrs: nounwind willreturn memory(argmem: read, inaccessiblemem: readwrite)
declare noalias ptr @luce_rt_open(ptr readonly %0, i64 %1) #7
; Function Attrs: nounwind willreturn memory(argmem: readwrite)
declare void @luce_rt_files_install(ptr nocapture nonnull noundef %0, ptr %1, ptr %2, ptr %3, ptr %4, ptr %5, ptr %6, ptr %7, ptr %8, ptr %9, ptr %10, ptr %11) #8
; Function Attrs: nounwind willreturn memory(readwrite)
declare void @luce_rt_sockets_install(ptr nocapture nonnull noundef %0, ptr %1, ptr %2, ptr %3, ptr %4, ptr %5, ptr %6) #9
; Function Attrs: nounwind willreturn memory(argmem: readwrite)
declare void @luce_rt_graphics_install(ptr nocapture nonnull noundef %0, ptr %1, ptr %2, ptr %3, ptr %4, ptr %5, ptr %6, ptr %7, ptr %8, ptr %9) #8
; Function Attrs: nounwind memory(readwrite)
declare i32 @luce_rt_args_list(ptr nocapture nonnull noundef %0, ptr %1, ptr %2, ptr %3, ptr align 8 nocapture nonnull dereferenceable(24) writeonly noundef %4) #10
; Function Attrs: nounwind memory(readwrite)
declare i32 @luce_rt_release(ptr nocapture nonnull noundef %0, ptr align 8 nocapture readonly nonnull dereferenceable(24) noundef %1) #10
; Function Attrs: cold
declare void @luce_rt_report(ptr nocapture nonnull noundef %0, ptr %1, ptr %2) #11
; Function Attrs: cold
declare void @luce_rt_report_error(ptr nocapture nonnull noundef %0, ptr %1, ptr %2) #11
; Function Attrs: nounwind willreturn memory(argmem: read)
declare i32 @luce_rt_status(ptr nocapture nonnull noundef %0, i32 %1) #12
; Function Attrs: nounwind willreturn memory(argmem: read)
declare i64 @luce_rt_leaked(ptr nocapture nonnull noundef %0) #12
; Function Attrs: nounwind memory(readwrite)
declare void @luce_rt_close(ptr nocapture nonnull noundef %0) #10
attributes #0 = { nounwind cold willreturn memory(argmem: readwrite, inaccessiblemem: readwrite) }
attributes #1 = { nounwind willreturn memory(read, argmem: readwrite) }
attributes #2 = { nounwind speculatable willreturn nofree nosync nocallback memory(none) }
attributes #3 = { nounwind willreturn memory(read, argmem: readwrite, inaccessiblemem: readwrite) }
attributes #4 = { nounwind willreturn nofree nocallback memory(argmem: readwrite) }
attributes #5 = { nounwind cold willreturn memory(argmem: write) }
attributes #6 = { nounwind willreturn memory(argmem: readwrite, inaccessiblemem: readwrite) }
attributes #7 = { nounwind willreturn memory(argmem: read, inaccessiblemem: readwrite) }
attributes #8 = { nounwind willreturn memory(argmem: readwrite) }
attributes #9 = { nounwind willreturn memory(readwrite) }
attributes #10 = { nounwind memory(readwrite) }
attributes #11 = { cold }
attributes #12 = { nounwind willreturn memory(argmem: read) }
!0 = !{!3}
!1 = !{!4}
!2 = !{!"branch_weights", i32 1, i32 2000}
!3 = !{!"luce.rows", !5}
!4 = !{!"luce.elements", !5}
!5 = !{!"luce.alias"}
ARM64 object code. LLVM selected these instructions, registers, calls, and branch conditions for this target.
open assembly fileARM64 instruction guide hover, focus, or tap dotted terms
x8 is a 64-bit register; w8 is its low 32 bits. A leading # marks a constant, brackets describe a memory address, and conditional instructions read the processor flags set by the preceding arithmetic or comparison.
Hover or focus a dotted term in the file for its explanation. On a touch screen, tap a term to keep the note open and tap elsewhere to close it. The list includes the operations that appear in this file.
mov- Copies a register value or loads a small constant. Calls also use it to place arguments in the required registers.
add- Adds registers or a constant. Address setup and stack restoration frequently use this instruction.
sub- Subtracts registers or a constant. Function prologues use it to reserve stack space.
adds- Adds and updates the negative, zero, carry, and overflow flags for a following conditional instruction.
cmp- Performs a subtraction solely to set condition flags; a following branch or select consumes those flags.
cmn- Performs an addition solely to set condition flags. The checked multiply-by-two path uses it to recognize unsafe inputs.
csel- Selects one of two registers from the current condition flags. The clamp uses it to choose the doubled value or limit.
cset- Writes 1 or 0 according to a condition, producing a Boolean value from processor flags.
ldr- Loads a register from memory using a scaled address offset.
str- Stores one register into memory using a scaled address offset.
ldp- Loads two adjacent registers, often restoring saved registers or reading neighboring fields.
stp- Stores two adjacent registers, often saving the caller's registers in a function prologue.
ldur- Loads from an unscaled byte offset, which is useful for stack slots below the frame pointer.
stur- Stores to an unscaled byte offset, which is useful for stack slots below the frame pointer.
ldurb- Loads one byte using an unscaled byte offset.
sturb- Stores one byte using an unscaled byte offset.
sturh- Stores 16 bits using an unscaled byte offset.
adrp- Loads the page address of a symbol. The linker fills in the final page-relative relocation.
bl- Calls a direct target and records the return address in
x30. blr- Calls the function address held in a register, as required for host callbacks and function values.
b- Jumps to another instruction address.
b.eq- Branches when the previous comparison reported equality.
b.ne- Branches when the previous comparison reported different values.
b.lt- Branches when the signed left operand was smaller.
b.le- Branches when the signed left operand was smaller or equal.
b.ge- Branches when the signed left operand was greater or equal.
b.hs- Branches when an unsigned comparison found higher-or-same, represented by a set carry flag.
b.vc- Branches when the arithmetic overflow flag is clear.
cbz- Compares a register with zero and branches when it is zero.
cbnz- Compares a register with zero and branches when it contains a nonzero value.
tbnz- Tests one selected bit and branches when that bit is set; packed runtime flags use this form.
lsr- Shifts bits right and fills with zero, often extracting the upper field of a packed handle.
umaddl- Widens two 32-bit unsigned operands, multiplies them, and adds a 64-bit base address.
orr- Combines bits, commonly setting tag or flag bits in a packed value.
ret- Returns to the address in
x30and ends the current machine function.
/Users/sedov/Dev/luciaos/www/lucelang/out/traces/control.o: file format mach-o arm64
Disassembly of section __TEXT,__text:
0000000000000000 <ltmp0>:
; luce_main():
0: stp x28, x27, [sp, #-0x60]!
4: stp x26, x25, [sp, #0x10]
8: stp x24, x23, [sp, #0x20]
c: stp x22, x21, [sp, #0x30]
10: stp x20, x19, [sp, #0x40]
14: stp x29, x30, [sp, #0x50]
18: add x29, sp, #0x50
1c: sub sp, sp, #0xa0
20: ldr x8, [x0, #0x70]
24: ldr x19, [x0]
28: mov x20, x0
2c: cbz x8, 0x1d8 <ltmp0+0x1d8>
30: mov x0, x19
34: blr x8
38: cmp x0, #0x1
3c: cset w22, lt
40: adrp x0, 0x0 <ltmp0>
44: add x0, x0, #0x0
48: mov w1, #0x1 ; =1
4c: bl 0x4c <ltmp0+0x4c>
50: cbz x0, 0x1f0 <ltmp0+0x1f0>
54: ldp x3, x4, [x20, #0x1b0]
58: mov x21, x0
5c: ldp x5, x6, [x20, #0x1c0]
60: ldr x2, [x20, #0xe0]
64: ldp x8, x9, [x20, #0xf8]
68: ldr x7, [x20, #0x1d0]
6c: ldur q0, [x20, #0xe8]
70: sub sp, sp, #0x20
74: mov x1, x19
78: stp x8, x9, [sp, #0x10]
7c: str q0, [sp]
80: bl 0x80 <ltmp0+0x80>
84: add sp, sp, #0x20
88: ldp x2, x3, [x20, #0x180]
8c: mov x0, x21
90: ldp x4, x5, [x20, #0x190]
94: mov x1, x19
98: ldr x6, [x20, #0x1a0]
9c: bl 0x9c <ltmp0+0x9c>
a0: ldp x8, x9, [x20, #0x170]
a4: ldp x2, x3, [x20, #0x140]
a8: ldp x4, x5, [x20, #0x150]
ac: ldp x6, x7, [x20, #0x160]
b0: stp x8, x9, [sp, #-0x10]!
b4: mov x0, x21
b8: mov x1, x19
bc: bl 0xbc <ltmp0+0xbc>
c0: add sp, sp, #0x10
c4: cbnz w22, 0x388 <ltmp0+0x388>
c8: sub x22, sp, #0x20
cc: mov sp, x22
d0: ldp x2, x3, [x20, #0x20]
d4: mov x0, x21
d8: mov x1, x19
dc: mov x4, x22
e0: bl 0xe0 <ltmp0+0xe0>
e4: cbnz w0, 0x31c <ltmp0+0x31c>
e8: ldr x8, [x22, #0x8]
ec: mov w9, #0xff04 ; =65284
f0: mov w10, #0x70 ; =112
f4: sturh w9, [x29, #-0x88]
f8: ldr x12, [x21, #0x60]
fc: mov w11, #0x2 ; =2
100: mov w9, w8
104: cmn w8, #0x1
108: sturb w11, [x29, #-0xb8]
10c: umaddl x10, w9, w10, x12
110: adrp x9, 0x0 <ltmp0>
114: add x9, x9, #0x0
118: stur xzr, [x29, #-0xa8]
11c: csel x9, x9, x10, eq
120: b.eq 0x2e8 <ltmp0+0x2e8>
124: ldr w10, [x10, #0x60]
128: lsr x8, x8, #32
12c: cmp w10, w8
130: b.ne 0x348 <ltmp0+0x348>
134: tbnz w10, #0x0, 0x348 <ltmp0+0x348>
138: ldr x24, [x9, #0x10]
13c: cmp x24, #0x1
140: b.lt 0x1f8 <ltmp0+0x1f8>
144: ldr x8, [x9]
148: mov x23, xzr
14c: mov x25, xzr
150: add x26, x8, #0x10
154: add x27, x8, #0x2
158: b 0x170 <ltmp0+0x170>
15c: add x25, x25, #0x1
160: add x26, x26, #0x18
164: add x27, x27, #0x18
168: cmp x25, x24
16c: b.ge 0x1fc <ltmp0+0x1fc>
170: ldurb w8, [x26, #-0xf]
174: ldp x9, x10, [x26, #-0x8]
178: sub x1, x29, #0x88
17c: sub x2, x29, #0xa0
180: mov x0, x21
184: cmp w8, #0xff
188: csel x9, x9, x27, eq
18c: csel x8, x10, x8, eq
190: stp x9, x8, [x29, #-0x80]
194: bl 0x194 <ltmp0+0x194>
198: cbnz w0, 0x2d8 <ltmp0+0x2d8>
19c: ldur x8, [x29, #-0x98]
1a0: cmp x8, #0x2
1a4: b.le 0x15c <ltmp0+0x15c>
1a8: adds x23, x23, #0x1
1ac: b.vc 0x15c <ltmp0+0x15c>
1b0: adrp x2, 0x0 <ltmp0>
1b4: add x2, x2, #0x0
1b8: mov x0, x21
1bc: mov w1, wzr
1c0: mov w3, #0x10 ; =16
1c4: bl 0x1c4 <ltmp0+0x1c4>
1c8: mov x0, x21
1cc: mov w1, wzr
1d0: mov w2, #0x17 ; =23
1d4: b 0x30c <ltmp0+0x30c>
1d8: mov w22, wzr
1dc: adrp x0, 0x0 <ltmp0>
1e0: add x0, x0, #0x0
1e4: mov w1, #0x1 ; =1
1e8: bl 0x1e8 <ltmp0+0x1e8>
1ec: cbnz x0, 0x54 <ltmp0+0x54>
1f0: mov w22, #0x2 ; =2
1f4: b 0x2b4 <ltmp0+0x2b4>
1f8: mov x23, xzr
1fc: sub x1, x29, #0xb8
200: sub x2, x29, #0xd0
204: mov x0, x21
208: stur x23, [x29, #-0xb0]
20c: bl 0x20c <ltmp0+0x20c>
210: cbnz w0, 0x3a4 <ltmp0+0x3a4>
214: ldp x9, x10, [x29, #-0xc8]
218: ldur q0, [x29, #-0xd0]
21c: ldr x8, [x20, #0x8]
220: ldurb w11, [x29, #-0xcf]
224: stur q0, [x29, #-0x70]
228: stur x10, [x29, #-0x60]
22c: cbz x8, 0x360 <ltmp0+0x360>
230: sub x12, x29, #0xd0
234: cmp w11, #0xff
238: ldr x0, [x20]
23c: orr x12, x12, #0x2
240: csel x2, x10, x11, eq
244: csel x1, x9, x12, eq
248: blr x8
24c: cmn w0, #0x1
250: b.eq 0x3b4 <ltmp0+0x3b4>
254: cmp w0, #0x2
258: b.hs 0x360 <ltmp0+0x360>
25c: sub x1, x29, #0x70
260: sub x2, x29, #0xe8
264: mov x0, x21
268: bl 0x268 <ltmp0+0x268>
26c: mov x0, x21
270: mov x1, x22
274: bl 0x274 <ltmp0+0x274>
278: mov w1, wzr
27c: mov x0, x21
280: bl 0x280 <ltmp0+0x280>
284: mov w22, w0
288: cmp w0, #0x2
28c: b.eq 0x2ac <ltmp0+0x2ac>
290: ldr x20, [x20, #0x18]
294: cbz x20, 0x2ac <ltmp0+0x2ac>
298: mov x0, x21
29c: bl 0x29c <ltmp0+0x29c>
2a0: mov x1, x0
2a4: mov x0, x19
2a8: blr x20
2ac: mov x0, x21
2b0: bl 0x2b0 <ltmp0+0x2b0>
2b4: mov w0, w22
2b8: sub sp, x29, #0x50
2bc: ldp x29, x30, [sp, #0x50]
2c0: ldp x20, x19, [sp, #0x40]
2c4: ldp x22, x21, [sp, #0x30]
2c8: ldp x24, x23, [sp, #0x20]
2cc: ldp x26, x25, [sp, #0x10]
2d0: ldp x28, x27, [sp], #0x60
2d4: ret
2d8: mov x0, x21
2dc: mov w1, wzr
2e0: mov w2, #0x11 ; =17
2e4: b 0x30c <ltmp0+0x30c>
2e8: adrp x2, 0x0 <ltmp0>
2ec: add x2, x2, #0x0
2f0: mov x0, x21
2f4: mov w1, #0xe ; =14
2f8: mov w3, #0x15 ; =21
2fc: bl 0x2fc <ltmp0+0x2fc>
300: mov x0, x21
304: mov w1, wzr
308: mov w2, #0x8 ; =8
30c: bl 0x30c <ltmp0+0x30c>
310: mov x0, x21
314: mov x1, x22
318: bl 0x318 <ltmp0+0x318>
31c: ldr x2, [x20, #0x10]
320: mov x0, x21
324: mov x1, x19
328: bl 0x328 <ltmp0+0x328>
32c: mov w1, #0x1 ; =1
330: mov x0, x21
334: bl 0x334 <ltmp0+0x334>
338: mov w22, w0
33c: cmp w0, #0x2
340: b.ne 0x290 <ltmp0+0x290>
344: b 0x2ac <ltmp0+0x2ac>
348: adrp x2, 0x0 <ltmp0>
34c: add x2, x2, #0x0
350: mov x0, x21
354: mov w1, #0xd ; =13
358: mov w3, #0x16 ; =22
35c: b 0x2fc <ltmp0+0x2fc>
360: adrp x2, 0x0 <ltmp0>
364: add x2, x2, #0x0
368: mov x0, x21
36c: mov w1, #0x9 ; =9
370: mov w3, #0x18 ; =24
374: bl 0x374 <ltmp0+0x374>
378: mov x0, x21
37c: mov w1, wzr
380: mov w2, #0x23 ; =35
384: b 0x30c <ltmp0+0x30c>
388: adrp x2, 0x0 <ltmp0>
38c: add x2, x2, #0x0
390: mov x0, x21
394: mov w1, #0x6 ; =6
398: mov w3, #0x13 ; =19
39c: bl 0x39c <ltmp0+0x39c>
3a0: b 0x31c <ltmp0+0x31c>
3a4: mov x0, x21
3a8: mov w1, wzr
3ac: mov w2, #0x21 ; =33
3b0: b 0x30c <ltmp0+0x30c>
3b4: mov x0, x21
3b8: bl 0x3b8 <ltmp0+0x3b8>
3bc: b 0x310 <ltmp0+0x310>
The control vocabulary
if/elif/else, while, counted for, sequence for, match, break, continue, and return are statements. Conditions accept bool; programs use an explicit comparison or presence check to derive that value from another type.
Structured source, explicit edges
headerevaluate Boolean condition
bodychecked statements
continuerelease body locals
exitcontinue with agreed local state
break targets the exit instead; return targets the function epilogue. HIR preserves the loop and its exits. MIR gives each target a basic block and inserts the recorded releases before the branch.
Match is typed dispatch
An enum match dispatches on the closed member set. A union match opens the payload only inside the corresponding arm. Scalar match supports exact integer, char, str, and bool values, several literals per arm, and inclusive ranges for ordered scalar types.
Enum / unionMay omit
else only when every member is covered.Boolean
true and false can prove complete scalar coverage.Other scalarUses
else to cover the values outside the listed literals and ranges.FloatRefused as a scrutinee; NaN and representation edges make literal coverage misleading.
Narrowing is flow state
A stable optional local or parameter can narrow after a presence check. Branches join conservatively, and a loop keeps only facts that remain valid across mutation. Each weak-storage access performs a fresh upgrade attempt, so its result is narrowed by storing that snapshot in a stable local.
Exits are ownership edges
Every structured exit carries the locals and statement temporaries it leaves. The same cleanup model covers normal fallthrough, early return, loop control, and recoverable-error propagation. Terminal traps unwind through the runtime trace channel under their own contract.
Recursion is bounded at run time
Recursive calls are ordinary calls, and each run has a call-depth budget. The budget raises a stable trap with a bounded trace before the host stack is exhausted. Debug artifacts retain source positions; stripped artifacts retain function names.