114 lines
5.1 KiB
LLVM
114 lines
5.1 KiB
LLVM
; RUN: llc < %s | FileCheck %s
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; RUN: llc < %s -filetype=obj | llvm-dwarfdump - | FileCheck %s --check-prefix=DWARF
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; This test creates two UserValues in LiveDebugVariables with one location
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; each. x must be spilled, but y will be allocated to a CSR. x's location
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; should be indirect, but y's should be direct.
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; C source:
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; #define FORCE_SPILL() \
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; __asm volatile("" : : : \
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; "rax", "rbx", "rcx", "rdx", "rsi", "rdi", "rbp", "r8", \
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; "r9", "r10", "r11", "r12", "r13", "r14", "r15")
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; int g(int);
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; int f() {
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; int x = g(0);
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; FORCE_SPILL();
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; int y = g(0);
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; g(y);
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; g(y);
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; g(y);
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; return x + y;
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; }
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; CHECK-LABEL: f: # @f
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; CHECK: callq g
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; CHECK: movl %eax, [[X_OFFS:[0-9]+]](%rsp) # 4-byte Spill
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; CHECK: #DEBUG_VALUE: f:x <- [DW_OP_plus_uconst [[X_OFFS]]] [$rsp+0]
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; CHECK: #APP
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; CHECK: #NO_APP
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; CHECK: callq g
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; CHECK: movl %eax, %[[CSR:[^ ]*]]
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; CHECK: #DEBUG_VALUE: f:y <- $esi
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; CHECK: movl %eax, %ecx
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; CHECK: callq g
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; CHECK: movl %[[CSR]], %ecx
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; CHECK: callq g
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; CHECK: movl %[[CSR]], %ecx
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; CHECK: callq g
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; CHECK: movl [[X_OFFS]](%rsp), %eax # 4-byte Reload
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; CHECK: #DEBUG_VALUE: f:x <- $eax
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; CHECK: addl %[[CSR]], %eax
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; DWARF: DW_TAG_variable
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; DWARF-NEXT: DW_AT_location (
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; DWARF-NEXT: [{{.*}}, {{.*}}): DW_OP_breg7 RSP+36
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; DWARF-NEXT: [{{.*}}, {{.*}}): DW_OP_reg0 RAX)
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; DWARF-NEXT: DW_AT_name ("x")
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; DWARF: DW_TAG_variable
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; DWARF-NEXT: DW_AT_location (
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; DWARF-NEXT: [{{.*}}, {{.*}}): DW_OP_reg4 RSI)
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; DWARF-NEXT: DW_AT_name ("y")
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; ModuleID = 'spill-nospill.c'
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source_filename = "spill-nospill.c"
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target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-pc-windows-msvc19.0.24215"
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; Function Attrs: nounwind uwtable
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define i32 @f() local_unnamed_addr #0 !dbg !8 {
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entry:
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%call = tail call i32 @g(i32 0) #3, !dbg !15
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tail call void @llvm.dbg.value(metadata i32 %call, metadata !13, metadata !DIExpression()), !dbg !16
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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
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%call1 = tail call i32 @g(i32 0) #3, !dbg !19
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tail call void @llvm.dbg.value(metadata i32 %call1, metadata !14, metadata !DIExpression()), !dbg !20
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%call2 = tail call i32 @g(i32 %call1) #3, !dbg !21
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%call3 = tail call i32 @g(i32 %call1) #3, !dbg !22
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%call4 = tail call i32 @g(i32 %call1) #3, !dbg !23
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%add = add nsw i32 %call1, %call, !dbg !24
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ret i32 %add, !dbg !25
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}
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declare i32 @g(i32) local_unnamed_addr #1
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; Function Attrs: nounwind readnone speculatable
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declare void @llvm.dbg.value(metadata, metadata, metadata) #2
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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" }
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attributes #1 = { "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" }
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attributes #2 = { nounwind readnone speculatable }
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attributes #3 = { nounwind }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !5, !6}
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!llvm.ident = !{!7}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 6.0.0 ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
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!1 = !DIFile(filename: "spill-nospill.c", directory: "C:\5Csrc\5Cllvm-project\5Cbuild")
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!2 = !{}
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!3 = !{i32 2, !"Dwarf Version", i32 4}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = !{i32 1, !"wchar_size", i32 2}
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!6 = !{i32 7, !"PIC Level", i32 2}
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!7 = !{!"clang version 6.0.0 "}
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!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)
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!9 = !DISubroutineType(types: !10)
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!10 = !{!11}
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!11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!12 = !{!13, !14}
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!13 = !DILocalVariable(name: "x", scope: !8, file: !1, line: 9, type: !11)
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!14 = !DILocalVariable(name: "y", scope: !8, file: !1, line: 11, type: !11)
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!15 = !DILocation(line: 9, column: 11, scope: !8)
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!16 = !DILocation(line: 9, column: 7, scope: !8)
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!17 = !DILocation(line: 10, column: 3, scope: !8)
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!18 = !{i32 -2147472112}
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!19 = !DILocation(line: 11, column: 11, scope: !8)
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!20 = !DILocation(line: 11, column: 7, scope: !8)
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!21 = !DILocation(line: 12, column: 3, scope: !8)
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!22 = !DILocation(line: 13, column: 3, scope: !8)
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!23 = !DILocation(line: 14, column: 3, scope: !8)
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!24 = !DILocation(line: 15, column: 12, scope: !8)
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!25 = !DILocation(line: 15, column: 3, scope: !8)
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