1 ; RUN: llc < %s -experimental-debug-variable-locations=true | FileCheck %s
2 ; RUN: llc -filetype=obj < %s -experimental-debug-variable-locations=true | llvm-dwarfdump -debug-loc - | FileCheck %s --check-prefix=DWARF
3 ; RUN: llc --try-experimental-debuginfo-iterators < %s -experimental-debug-variable-locations=true | FileCheck %s
4 ; RUN: llc --try-experimental-debuginfo-iterators -filetype=obj < %s -experimental-debug-variable-locations=true | llvm-dwarfdump -debug-loc - | FileCheck %s --check-prefix=DWARF
6 ; Compile the following with -O1:
8 ; struct IntPair { int x, y; };
10 ; int bitpiece_spill() {
11 ; struct IntPair o = {g(), 0};
12 ; // Force o.x to spill
13 ; asm volatile("" : : : "rax", "rbx", "rcx", "rdx", "rsi", "rdi", "rbp",
14 ; "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15");
18 ; CHECK-LABEL: bitpiece_spill: # @bitpiece_spill
20 ; CHECK: movl %eax, [[offs:[0-9]+]](%rsp) # 4-byte Spill
21 ; CHECK: #DEBUG_VALUE: bitpiece_spill:o <- [DW_OP_plus_uconst [[offs]], DW_OP_deref, DW_OP_LLVM_fragment 0 32] $rsp
22 ; CHECK: #DEBUG_VALUE: bitpiece_spill:o <- [DW_OP_LLVM_fragment 32 32] 0
25 ; CHECK: movl [[offs]](%rsp), %eax # 4-byte Reload
28 ; DWARF: .debug_loc contents:
29 ; DWARF-NEXT: 0x00000000:
30 ; DWARF-NEXT: {{.*}}: DW_OP_breg7 RSP+{{[0-9]+}}, DW_OP_piece 0x4, DW_OP_lit0, DW_OP_stack_value, DW_OP_piece 0x4
33 source_filename = "t.c"
34 target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
35 target triple = "x86_64-pc-windows-msvc19.0.24210"
37 %struct.IntPair = type { i32, i32 }
39 ; Function Attrs: nounwind uwtable
40 define i32 @bitpiece_spill() local_unnamed_addr #0 !dbg !7 {
42 tail call void @llvm.dbg.declare(metadata ptr undef, metadata !12, metadata !17), !dbg !18
43 %call = tail call i32 @g() #3, !dbg !19
44 tail call void @llvm.dbg.value(metadata i32 %call, metadata !12, metadata !20), !dbg !18
45 tail call void @llvm.dbg.value(metadata i32 0, metadata !12, metadata !21), !dbg !18
46 tail call void asm sideeffect "", "~{rax},~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{rbp},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15},~{dirflag},~{fpsr},~{flags}"() #3, !dbg !22, !srcloc !23
47 ret i32 %call, !dbg !24
50 ; Function Attrs: nounwind readnone
51 declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
53 declare i32 @g() local_unnamed_addr #2
55 ; Function Attrs: nounwind readnone
56 declare void @llvm.dbg.value(metadata, metadata, metadata) #1
58 attributes #0 = { nounwind uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="none" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
59 attributes #1 = { nounwind readnone }
60 attributes #2 = { "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="none" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
61 attributes #3 = { nounwind }
64 !llvm.module.flags = !{!3, !4, !5}
67 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 4.0.0 ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
68 !1 = !DIFile(filename: "t.c", directory: "C:\5Csrc\5Cllvm\5Cbuild")
70 !3 = !{i32 2, !"Dwarf Version", i32 4}
71 !4 = !{i32 2, !"Debug Info Version", i32 3}
72 !5 = !{i32 1, !"PIC Level", i32 2}
73 !6 = !{!"clang version 4.0.0 "}
74 !7 = distinct !DISubprogram(name: "bitpiece_spill", scope: !1, file: !1, line: 3, type: !8, isLocal: false, isDefinition: true, scopeLine: 3, isOptimized: true, unit: !0, retainedNodes: !11)
75 !8 = !DISubroutineType(types: !9)
77 !10 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
79 !12 = !DILocalVariable(name: "o", scope: !7, file: !1, line: 4, type: !13)
80 !13 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "IntPair", file: !1, line: 1, size: 64, align: 32, elements: !14)
82 !15 = !DIDerivedType(tag: DW_TAG_member, name: "x", scope: !13, file: !1, line: 1, baseType: !10, size: 32, align: 32)
83 !16 = !DIDerivedType(tag: DW_TAG_member, name: "y", scope: !13, file: !1, line: 1, baseType: !10, size: 32, align: 32, offset: 32)
85 !18 = !DILocation(line: 4, column: 18, scope: !7)
86 !19 = !DILocation(line: 4, column: 23, scope: !7)
87 !20 = !DIExpression(DW_OP_LLVM_fragment, 0, 32)
88 !21 = !DIExpression(DW_OP_LLVM_fragment, 32, 32)
89 !22 = !DILocation(line: 6, column: 3, scope: !7)
91 !24 = !DILocation(line: 8, column: 3, scope: !7)