| ; RUN: llc < %s | FileCheck %s |
| ; RUN: llc < %s -filetype=obj | llvm-dwarfdump - | FileCheck %s --check-prefix=DWARF |
| |
| ; This test creates two UserValues in LiveDebugVariables with one location |
| ; each. x must be spilled, but y will be allocated to a CSR. x's location |
| ; should be indirect, but y's should be direct. |
| |
| ; C source: |
| ; #define FORCE_SPILL() \ |
| ; __asm volatile("" : : : \ |
| ; "rax", "rbx", "rcx", "rdx", "rsi", "rdi", "rbp", "r8", \ |
| ; "r9", "r10", "r11", "r12", "r13", "r14", "r15") |
| ; int g(int); |
| ; int f() { |
| ; int x = g(0); |
| ; FORCE_SPILL(); |
| ; int y = g(0); |
| ; g(y); |
| ; g(y); |
| ; g(y); |
| ; return x + y; |
| ; } |
| |
| ; CHECK-LABEL: f: # @f |
| ; CHECK: callq g |
| ; CHECK: movl %eax, [[X_OFFS:[0-9]+]](%rsp) # 4-byte Spill |
| ; CHECK: #DEBUG_VALUE: f:x <- [DW_OP_plus_uconst [[X_OFFS]]] [$rsp+0] |
| ; CHECK: #APP |
| ; CHECK: #NO_APP |
| ; CHECK: callq g |
| ; CHECK: movl %eax, %[[CSR:[^ ]*]] |
| ; CHECK: #DEBUG_VALUE: f:y <- $esi |
| ; CHECK: movl %eax, %ecx |
| ; CHECK: callq g |
| ; CHECK: movl %[[CSR]], %ecx |
| ; CHECK: callq g |
| ; CHECK: movl %[[CSR]], %ecx |
| ; CHECK: callq g |
| ; CHECK: movl [[X_OFFS]](%rsp), %eax # 4-byte Reload |
| ; CHECK: #DEBUG_VALUE: f:x <- $eax |
| ; CHECK: addl %[[CSR]], %eax |
| |
| ; DWARF: DW_TAG_variable |
| ; DWARF-NEXT: DW_AT_location ( |
| ; DWARF-NEXT: [{{.*}}, {{.*}}): DW_OP_breg7 RSP+36 |
| ; DWARF-NEXT: [{{.*}}, {{.*}}): DW_OP_reg0 RAX) |
| ; DWARF-NEXT: DW_AT_name ("x") |
| |
| ; DWARF: DW_TAG_variable |
| ; DWARF-NEXT: DW_AT_location ( |
| ; DWARF-NEXT: [{{.*}}, {{.*}}): DW_OP_reg4 RSI) |
| ; DWARF-NEXT: DW_AT_name ("y") |
| |
| ; ModuleID = 'spill-nospill.c' |
| source_filename = "spill-nospill.c" |
| target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-pc-windows-msvc19.0.24215" |
| |
| ; Function Attrs: nounwind uwtable |
| define i32 @f() local_unnamed_addr #0 !dbg !8 { |
| entry: |
| %call = tail call i32 @g(i32 0) #3, !dbg !15 |
| tail call void @llvm.dbg.value(metadata i32 %call, metadata !13, metadata !DIExpression()), !dbg !16 |
| 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 !17, !srcloc !18 |
| %call1 = tail call i32 @g(i32 0) #3, !dbg !19 |
| tail call void @llvm.dbg.value(metadata i32 %call1, metadata !14, metadata !DIExpression()), !dbg !20 |
| %call2 = tail call i32 @g(i32 %call1) #3, !dbg !21 |
| %call3 = tail call i32 @g(i32 %call1) #3, !dbg !22 |
| %call4 = tail call i32 @g(i32 %call1) #3, !dbg !23 |
| %add = add nsw i32 %call1, %call, !dbg !24 |
| ret i32 %add, !dbg !25 |
| } |
| |
| declare i32 @g(i32) local_unnamed_addr #1 |
| |
| ; Function Attrs: nounwind readnone speculatable |
| declare void @llvm.dbg.value(metadata, metadata, metadata) #2 |
| |
| attributes #0 = { nounwind uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "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 = { "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "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 #2 = { nounwind readnone speculatable } |
| attributes #3 = { nounwind } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!3, !4, !5, !6} |
| !llvm.ident = !{!7} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 6.0.0 ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) |
| !1 = !DIFile(filename: "spill-nospill.c", directory: "C:\5Csrc\5Cllvm-project\5Cbuild") |
| !2 = !{} |
| !3 = !{i32 2, !"Dwarf Version", i32 4} |
| !4 = !{i32 2, !"Debug Info Version", i32 3} |
| !5 = !{i32 1, !"wchar_size", i32 2} |
| !6 = !{i32 7, !"PIC Level", i32 2} |
| !7 = !{!"clang version 6.0.0 "} |
| !8 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 8, type: !9, isLocal: false, isDefinition: true, scopeLine: 8, isOptimized: true, unit: !0, retainedNodes: !12) |
| !9 = !DISubroutineType(types: !10) |
| !10 = !{!11} |
| !11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !12 = !{!13, !14} |
| !13 = !DILocalVariable(name: "x", scope: !8, file: !1, line: 9, type: !11) |
| !14 = !DILocalVariable(name: "y", scope: !8, file: !1, line: 11, type: !11) |
| !15 = !DILocation(line: 9, column: 11, scope: !8) |
| !16 = !DILocation(line: 9, column: 7, scope: !8) |
| !17 = !DILocation(line: 10, column: 3, scope: !8) |
| !18 = !{i32 -2147472112} |
| !19 = !DILocation(line: 11, column: 11, scope: !8) |
| !20 = !DILocation(line: 11, column: 7, scope: !8) |
| !21 = !DILocation(line: 12, column: 3, scope: !8) |
| !22 = !DILocation(line: 13, column: 3, scope: !8) |
| !23 = !DILocation(line: 14, column: 3, scope: !8) |
| !24 = !DILocation(line: 15, column: 12, scope: !8) |
| !25 = !DILocation(line: 15, column: 3, scope: !8) |
