derek.holloway
7502bf64a4
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51 lines
2.2 KiB
LLVM
51 lines
2.2 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() correctly propagates debug locations
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; of `%div` and `%rem` to new freeze, mul and sub instructions.
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define i128 @dont_hoist_urem(i128 %a, i128 %b) !dbg !5 {
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; CHECK-LABEL: define i128 @dont_hoist_urem(
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; CHECK-SAME: i128 [[A:%.*]], i128 [[B:%.*]])
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; CHECK: entry:
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; CHECK-NEXT: [[A_FROZEN:%.*]] = freeze i128 [[A]], !dbg [[DBG8:![0-9]+]]
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; CHECK-NEXT: [[B_FROZEN:%.*]] = freeze i128 [[B]], !dbg [[DBG8]]
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; CHECK: if:
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; CHECK-NEXT: [[TMP0:%.*]] = mul i128 [[DIV:%.*]], [[B_FROZEN]], !dbg [[DBG11:![0-9]+]]
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; CHECK-NEXT: [[REM_DECOMPOSED:%.*]] = sub i128 [[A_FROZEN]], [[TMP0:%.*]], !dbg [[DBG11]]
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; CHECK: end:
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entry:
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%div = udiv i128 %a, %b, !dbg !8
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%cmp = icmp eq i128 %div, 42, !dbg !9
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br i1 %cmp, label %if, label %end, !dbg !10
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if: ; preds = %entry
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%rem = urem i128 %a, %b, !dbg !11
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br label %end, !dbg !12
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end: ; preds = %if, %entry
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%ret = phi i128 [ %rem, %if ], [ 3, %entry ], !dbg !13
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ret i128 %ret, !dbg !14
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}
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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: "frx_fry_.preserve.ll", directory: "/")
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!2 = !{i32 7}
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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: "dont_hoist_urem", linkageName: "dont_hoist_urem", 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 = !DILocation(line: 6, column: 1, scope: !5)
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!14 = !DILocation(line: 7, column: 1, scope: !5)
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; CHECK: [[DBG8]] = !DILocation(line: 1,
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; CHECK: [[DBG11]] = !DILocation(line: 4,
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