derek.holloway
7502bf64a4
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81 lines
2.8 KiB
LLVM
81 lines
2.8 KiB
LLVM
; Test ensuring debug intrinsics do not affect generated function prologue.
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;
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; RUN: llc -O1 -mtriple=x86_64-unknown-unknown -o - %s | FileCheck %s
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@a = local_unnamed_addr global i64 0, align 8
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define void @noDebug() {
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entry:
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%0 = load i64, ptr @a, align 8
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%1 = load i64, ptr @a, align 8
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%2 = load i64, ptr @a, align 8
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%3 = tail call { i64, i1 } @llvm.uadd.with.overflow.i64(i64 %0, i64 %1)
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%4 = extractvalue { i64, i1 } %3, 0
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%5 = tail call i64 @fn1(i64 %4, i64 %2)
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tail call void (...) @printf()
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tail call void (...) @printf(i64 1, i64 2, i64 3, i64 4, i32 0, i64 0, i64 %4, i64 %5)
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ret void
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}
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; CHECK-LABEL: noDebug
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; CHECK: addq $24, %rsp
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; CHECK-NEXT: .cfi_adjust_cfa_offset -24
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; CHECK-NEXT: popq %rbx
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; CHECK-NEXT: .cfi_def_cfa_offset 16
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; CHECK-NEXT: popq %r14
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; CHECK-NEXT: .cfi_def_cfa_offset 8
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; CHECK-NEXT: retq
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define void @withDebug() !dbg !18 {
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entry:
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%0 = load i64, ptr @a, align 8
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%1 = load i64, ptr @a, align 8
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%2 = load i64, ptr @a, align 8
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%3 = tail call { i64, i1 } @llvm.uadd.with.overflow.i64(i64 %0, i64 %1)
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%4 = extractvalue { i64, i1 } %3, 0
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%5 = tail call i64 @fn1(i64 %4, i64 %2)
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tail call void @llvm.dbg.value(metadata i64 %4, i64 0, metadata !23, metadata !33), !dbg !34
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tail call void @llvm.dbg.value(metadata i64 %5, i64 0, metadata !22, metadata !33), !dbg !35
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tail call void (...) @printf()
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tail call void (...) @printf(i64 1, i64 2, i64 3, i64 4, i32 0, i64 0, i64 %4, i64 %5)
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ret void
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}
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; CHECK-LABEL: withDebug
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; CHECK: callq printf
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; CHECK: callq printf
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; CHECK-NEXT: addq $24, %rsp
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; CHECK-NEXT: .cfi_adjust_cfa_offset -24
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; CHECK-NEXT: popq %rbx
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; CHECK-NEXT: .cfi_def_cfa_offset 16
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; CHECK-NEXT: popq %r14
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; CHECK-NEXT: .cfi_def_cfa_offset 8
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; CHECK-NEXT: retq
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declare { i64, i1 } @llvm.uadd.with.overflow.i64(i64, i64)
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declare i64 @fn1(i64, i64)
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declare void @printf(...)
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declare void @llvm.dbg.value(metadata, i64, metadata, metadata)
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!llvm.dbg.cu = !{!1}
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!llvm.module.flags = !{!15, !16}
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!1 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !2, producer: "clang version 4.0.0")
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!2 = !DIFile(filename: "test.cpp", directory: "")
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!11 = !DIBasicType(name: "long int", size: 64, encoding: DW_ATE_signed)
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!15 = !{i32 2, !"Dwarf Version", i32 4}
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!16 = !{i32 2, !"Debug Info Version", i32 3}
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!18 = distinct !DISubprogram(name: "test", scope: !2, file: !2, line: 5, unit: !1, type: !39)
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!22 = !DILocalVariable(name: "i", scope: !18, file: !2, line: 6, type: !11)
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!23 = !DILocalVariable(name: "j", scope: !18, file: !2, line: 7, type: !11)
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!33 = !DIExpression()
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!34 = !DILocation(line: 7, column: 17, scope: !18)
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!35 = !DILocation(line: 6, column: 8, scope: !18)
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!36 = !DILocation(line: 9, column: 3, scope: !18)
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!37 = !DILocation(line: 10, column: 10, scope: !18)
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!38 = !{null}
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!39 = !DISubroutineType(types: !38)
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