| ; RUN: llc < %s -experimental-debug-variable-locations=true | FileCheck %s |
| ; RUN: llc -filetype=obj < %s -experimental-debug-variable-locations=true | llvm-dwarfdump -debug-loc - | FileCheck %s --check-prefix=DWARF |
| |
| ; Compile the following with -O1: |
| |
| ; struct IntPair { int x, y; }; |
| ; int g(void); |
| ; int bitpiece_spill() { |
| ; struct IntPair o = {g(), 0}; |
| ; // Force o.x to spill |
| ; asm volatile("" : : : "rax", "rbx", "rcx", "rdx", "rsi", "rdi", "rbp", |
| ; "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15"); |
| ; return o.x; |
| ; } |
| |
| ; CHECK-LABEL: bitpiece_spill: # @bitpiece_spill |
| ; CHECK: callq g |
| ; CHECK: movl %eax, [[offs:[0-9]+]](%rsp) # 4-byte Spill |
| ; CHECK: #DEBUG_VALUE: bitpiece_spill:o <- [DW_OP_plus_uconst [[offs]], DW_OP_deref, DW_OP_LLVM_fragment 0 32] $rsp
|
| ; CHECK: #DEBUG_VALUE: bitpiece_spill:o <- [DW_OP_LLVM_fragment 32 32] 0 |
| ; CHECK: #APP |
| ; CHECK: #NO_APP |
| ; CHECK: movl [[offs]](%rsp), %eax # 4-byte Reload |
| ; CHECK: retq |
| |
| ; DWARF: .debug_loc contents: |
| ; DWARF-NEXT: 0x00000000: |
| ; DWARF-NEXT: {{.*}}: DW_OP_breg7 RSP+{{[0-9]+}}, DW_OP_piece 0x4, DW_OP_lit0, DW_OP_stack_value, DW_OP_piece 0x4 |
| |
| ; ModuleID = 't.c' |
| source_filename = "t.c" |
| target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-pc-windows-msvc19.0.24210" |
| |
| %struct.IntPair = type { i32, i32 } |
| |
| ; Function Attrs: nounwind uwtable |
| define i32 @bitpiece_spill() local_unnamed_addr #0 !dbg !7 { |
| entry: |
| tail call void @llvm.dbg.declare(metadata ptr undef, metadata !12, metadata !17), !dbg !18 |
| %call = tail call i32 @g() #3, !dbg !19 |
| tail call void @llvm.dbg.value(metadata i32 %call, metadata !12, metadata !20), !dbg !18 |
| tail call void @llvm.dbg.value(metadata i32 0, metadata !12, metadata !21), !dbg !18 |
| 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 |
| ret i32 %call, !dbg !24 |
| } |
| |
| ; Function Attrs: nounwind readnone |
| declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 |
| |
| declare i32 @g() local_unnamed_addr #2 |
| |
| ; Function Attrs: nounwind readnone |
| declare void @llvm.dbg.value(metadata, metadata, metadata) #1 |
| |
| 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" } |
| attributes #1 = { nounwind readnone } |
| 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" } |
| attributes #3 = { nounwind } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!3, !4, !5} |
| !llvm.ident = !{!6} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 4.0.0 ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) |
| !1 = !DIFile(filename: "t.c", directory: "C:\5Csrc\5Cllvm\5Cbuild") |
| !2 = !{} |
| !3 = !{i32 2, !"Dwarf Version", i32 4} |
| !4 = !{i32 2, !"Debug Info Version", i32 3} |
| !5 = !{i32 1, !"PIC Level", i32 2} |
| !6 = !{!"clang version 4.0.0 "} |
| !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) |
| !8 = !DISubroutineType(types: !9) |
| !9 = !{!10} |
| !10 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed) |
| !11 = !{!12} |
| !12 = !DILocalVariable(name: "o", scope: !7, file: !1, line: 4, type: !13) |
| !13 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "IntPair", file: !1, line: 1, size: 64, align: 32, elements: !14) |
| !14 = !{!15, !16} |
| !15 = !DIDerivedType(tag: DW_TAG_member, name: "x", scope: !13, file: !1, line: 1, baseType: !10, size: 32, align: 32) |
| !16 = !DIDerivedType(tag: DW_TAG_member, name: "y", scope: !13, file: !1, line: 1, baseType: !10, size: 32, align: 32, offset: 32) |
| !17 = !DIExpression() |
| !18 = !DILocation(line: 4, column: 18, scope: !7) |
| !19 = !DILocation(line: 4, column: 23, scope: !7) |
| !20 = !DIExpression(DW_OP_LLVM_fragment, 0, 32) |
| !21 = !DIExpression(DW_OP_LLVM_fragment, 32, 32) |
| !22 = !DILocation(line: 6, column: 3, scope: !7) |
| !23 = !{i32 138} |
| !24 = !DILocation(line: 8, column: 3, scope: !7) |