Semicompiled

typedef struct
{
    int a;
} MyStruct;
MyStruct produce(void);
void myEntry(void)
{
    MyStruct x;
    x = produce();
}

; ModuleID = '/tmp/semicompiled-AwZPnoUL-6448525926349970155/source.c'
source_filename = "/tmp/semicompiled-AwZPnoUL-6448525926349970155/source.c"
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-pc-linux-gnu"

%struct.MyStruct = type { i32 }

; Function Attrs: noinline nounwind optnone uwtable
define dso_local void @myEntry() #0 {
  %1 = alloca %struct.MyStruct, align 4
  %2 = alloca %struct.MyStruct, align 4
  %3 = call i32 @produce()
  %4 = getelementptr inbounds %struct.MyStruct, %struct.MyStruct* %2, i32 0, i32 0
  store i32 %3, i32* %4, align 4
  %5 = bitcast %struct.MyStruct* %1 to i8*
  %6 = bitcast %struct.MyStruct* %2 to i8*
  call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 %5, i8* align 4 %6, i64 4, i1 false)
  ret void
}

declare dso_local i32 @produce() #1

; Function Attrs: argmemonly nounwind willreturn
declare void @llvm.memcpy.p0i8.p0i8.i64(i8* noalias nocapture writeonly, i8* noalias nocapture readonly, i64, i1 immarg) #2

attributes #0 = { noinline nounwind optnone uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="all" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="all" "less-precise-fpmad"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #2 = { argmemonly nounwind willreturn }

!llvm.module.flags = !{!0}
!llvm.ident = !{!1}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{!"Debian clang version 11.0.1-2"}

; ModuleID = '/tmp/semicompiled-AwZPnoUL-6448525926349970155/source.c'
source_filename = "/tmp/semicompiled-AwZPnoUL-6448525926349970155/source.c"
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-pc-linux-gnu"

%struct.MyStruct = type { i32 }

; Function Attrs: noinline nounwind optnone uwtable
define dso_local void @myEntry() #0 !dbg !7 {
  %1 = alloca %struct.MyStruct, align 4
  %2 = alloca %struct.MyStruct, align 4
  call void @llvm.dbg.declare(metadata %struct.MyStruct* %1, metadata !11, metadata !DIExpression()), !dbg !17
  %3 = call i32 @produce(), !dbg !18
  %4 = getelementptr inbounds %struct.MyStruct, %struct.MyStruct* %2, i32 0, i32 0, !dbg !18
  store i32 %3, i32* %4, align 4, !dbg !18
  %5 = bitcast %struct.MyStruct* %1 to i8*, !dbg !18
  %6 = bitcast %struct.MyStruct* %2 to i8*, !dbg !18
  call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 %5, i8* align 4 %6, i64 4, i1 false), !dbg !18
  ret void, !dbg !19
}

; Function Attrs: nounwind readnone speculatable willreturn
declare void @llvm.dbg.declare(metadata, metadata, metadata) #1

declare dso_local i32 @produce() #2

; Function Attrs: argmemonly nounwind willreturn
declare void @llvm.memcpy.p0i8.p0i8.i64(i8* noalias nocapture writeonly, i8* noalias nocapture readonly, i64, i1 immarg) #3

attributes #0 = { noinline nounwind optnone uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="all" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { nounwind readnone speculatable willreturn }
attributes #2 = { "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="all" "less-precise-fpmad"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #3 = { argmemonly nounwind willreturn }

!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!3, !4, !5}
!llvm.ident = !{!6}

!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "Debian clang version 11.0.1-2", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
!1 = !DIFile(filename: "/tmp/semicompiled-AwZPnoUL-6448525926349970155/source.c", directory: "/__w/semicompiled/semicompiled")
!2 = !{}
!3 = !{i32 7, !"Dwarf Version", i32 4}
!4 = !{i32 2, !"Debug Info Version", i32 3}
!5 = !{i32 1, !"wchar_size", i32 4}
!6 = !{!"Debian clang version 11.0.1-2"}
!7 = distinct !DISubprogram(name: "myEntry", scope: !8, file: !8, line: 6, type: !9, scopeLine: 7, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2)
!8 = !DIFile(filename: "/tmp/semicompiled-AwZPnoUL-6448525926349970155/source.c", directory: "")
!9 = !DISubroutineType(types: !10)
!10 = !{null}
!11 = !DILocalVariable(name: "x", scope: !7, file: !8, line: 8, type: !12)
!12 = !DIDerivedType(tag: DW_TAG_typedef, name: "MyStruct", file: !8, line: 4, baseType: !13)
!13 = distinct !DICompositeType(tag: DW_TAG_structure_type, file: !8, line: 1, size: 32, elements: !14)
!14 = !{!15}
!15 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !13, file: !8, line: 3, baseType: !16, size: 32)
!16 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!17 = !DILocation(line: 8, column: 14, scope: !7)
!18 = !DILocation(line: 9, column: 9, scope: !7)
!19 = !DILocation(line: 10, column: 1, scope: !7)

(module
  (type (;0;) (func))
  (type (;1;) (func (result i32)))
  (import "env" "produce" (func (;0;) (type 1)))
  (import "env" "__stack_pointer" (global (;0;) (mut i32)))
  (import "env" "__memory_base" (global (;1;) i32))
  (import "env" "__table_base" (global (;2;) i32))
  (import "env" "memory" (memory (;0;) 0))
  (import "env" "__indirect_function_table" (table (;0;) 0 funcref))
  (func (;1;) (type 0)
    call 2)
  (func (;2;) (type 0))
  (func (;3;) (type 0)
    (local i32 i32 i32 i32 i32 i32 i32 i32 i32 i32 i32)
    global.get 0
    local.set 0
    i32.const 16
    local.set 1
    local.get 0
    local.get 1
    i32.sub
    local.set 2
    local.get 2
    global.set 0
    local.get 2
    local.set 3
    i32.const 8
    local.set 4
    local.get 2
    local.get 4
    i32.add
    local.set 5
    local.get 5
    local.set 6
    call 0
    local.set 7
    local.get 2
    local.get 7
    i32.store
    local.get 3
    i32.load
    local.set 8
    local.get 6
    local.get 8
    i32.store
    i32.const 16
    local.set 9
    local.get 2
    local.get 9
    i32.add
    local.set 10
    local.get 10
    global.set 0
    return)
  (global (;3;) i32 (i32.const 0))
  (export "__post_instantiate" (func 1))
  (export "__wasm_apply_relocs" (func 2))
  (export "myEntry" (func 3))
  (export "__dso_handle" (global 3)))

/tmp/semicompiled-AwZPnoUL-6448525926349970155/source.o:	file format elf64-bpf


Disassembly of section .text:

0000000000000000 <myEntry>:
; myEntry():
; /tmp/semicompiled-AwZPnoUL-6448525926349970155/source.c:7
; {
       0:	r1 = r10
; /tmp/semicompiled-AwZPnoUL-6448525926349970155/source.c:9
;     x = produce();
       1:	r1 += -16
       2:	call -1
       3:	r1 = *(u32 *)(r10 - 16)
       4:	*(u32 *)(r10 - 8) = r1
; /tmp/semicompiled-AwZPnoUL-6448525926349970155/source.c:10
; }
       5:	exit