derek.holloway
7502bf64a4
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57 lines
2.6 KiB
LLVM
57 lines
2.6 KiB
LLVM
; RUN: opt -S -passes=div-rem-pairs -mtriple=x86_64-unknown-unknown < %s | FileCheck %s
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; Check that DivRemPairs's optimizeDivRem() propagates the debug location of
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; replaced `%rem` to the new srem or urem instruction.
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; @decompose_illegal_srem_same_block tests it when the operands of `%rem` is signed.
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; @decompose_illegal_urem_same_block tests it when the operands of `%rem` is unsigned.
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define void @decompose_illegal_srem_same_block(i32 %a, i32 %b) !dbg !5 {
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; CHECK-LABEL: define void @decompose_illegal_srem_same_block(
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; CHECK: %rem.recomposed = srem i32 [[A:%.*]], [[B:%.*]], !dbg [[DBG10:![0-9]+]]
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%div = sdiv i32 %a, %b, !dbg !8
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%t0 = mul i32 %div, %b, !dbg !9
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%rem = sub i32 %a, %t0, !dbg !10
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call void @foo(i32 %rem, i32 %div), !dbg !11
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ret void, !dbg !12
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}
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define void @decompose_illegal_urem_same_block(i32 %a, i32 %b) !dbg !13 {
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; CHECK-LABEL: define void @decompose_illegal_urem_same_block(
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; CHECK: %rem.recomposed = urem i32 [[A:%.*]], [[B:%.*]], !dbg [[DBG16:![0-9]+]]
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%div = udiv i32 %a, %b, !dbg !14
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%t0 = mul i32 %div, %b, !dbg !15
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%rem = sub i32 %a, %t0, !dbg !16
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call void @foo(i32 %rem, i32 %div), !dbg !17
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ret void, !dbg !18
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}
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declare void @foo(i32, i32)
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!llvm.dbg.cu = !{!0}
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!llvm.debugify = !{!2, !3}
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!llvm.module.flags = !{!4}
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!0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, producer: "debugify", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug)
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!1 = !DIFile(filename: "realrem_preverse.ll", directory: "/")
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!2 = !{i32 10}
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!3 = !{i32 0}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = distinct !DISubprogram(name: "decompose_illegal_srem_same_block", linkageName: "decompose_illegal_srem_same_block", scope: null, file: !1, line: 1, type: !6, scopeLine: 1, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0)
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!6 = !DISubroutineType(types: !7)
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!7 = !{}
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!8 = !DILocation(line: 1, column: 1, scope: !5)
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!9 = !DILocation(line: 2, column: 1, scope: !5)
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!10 = !DILocation(line: 3, column: 1, scope: !5)
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!11 = !DILocation(line: 4, column: 1, scope: !5)
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!12 = !DILocation(line: 5, column: 1, scope: !5)
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!13 = distinct !DISubprogram(name: "decompose_illegal_urem_same_block", linkageName: "decompose_illegal_urem_same_block", scope: null, file: !1, line: 6, type: !6, scopeLine: 6, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0)
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!14 = !DILocation(line: 6, column: 1, scope: !13)
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!15 = !DILocation(line: 7, column: 1, scope: !13)
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!16 = !DILocation(line: 8, column: 1, scope: !13)
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!17 = !DILocation(line: 9, column: 1, scope: !13)
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!18 = !DILocation(line: 10, column: 1, scope: !13)
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; CHECK: [[DBG10]] = !DILocation(line: 3,
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; CHECK: [[DBG16]] = !DILocation(line: 8,
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