derek.holloway
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67 lines
2.9 KiB
LLVM
67 lines
2.9 KiB
LLVM
; RUN: opt -passes=licm -verify-memoryssa -S < %s | FileCheck %s
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; JumpThreading's hoistRegion() replaces the `fdiv` (%v6), of which the second
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; operand (%v) is a loop invariant, with a loop invariant `fdiv` and a `fmul`.
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; This test checks that the debug location propagates to the new `fmul` from
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; the old `fdiv` it replaces in block `loop` and the debug location drop of new
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; `fdiv`, which is hoisted to block `entry` after being created.
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define zeroext i1 @invariant_denom(double %v) !dbg !5 {
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; CHECK: entry:
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; CHECK-NEXT: [[TMP0:%.*]] = fdiv fast double 1.000000e+00, [[V:%.*]]{{$}}
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; CHECK: loop:
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; CHECK: [[TMP1:%.*]] = fmul fast double {{.*}}, !dbg [[DBG12:![0-9]+]]
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; CHECK: [[DBG12]] = !DILocation(line: 5,
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;
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entry:
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br label %loop, !dbg !8
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loop: ; preds = %loop, %entry
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%v3 = phi i32 [ 0, %entry ], [ %v11, %loop ], !dbg !9
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%v4 = phi i32 [ 0, %entry ], [ %v12, %loop ], !dbg !10
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%v5 = uitofp i32 %v4 to double, !dbg !11
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%v6 = fdiv fast double %v5, %v, !dbg !12
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%v7 = fptoui double %v6 to i64, !dbg !13
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%v8 = and i64 %v7, 1, !dbg !14
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%v9 = xor i64 %v8, 1, !dbg !15
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%v10 = trunc i64 %v9 to i32, !dbg !16
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%v11 = add i32 %v10, %v3, !dbg !17
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%v12 = add nuw i32 %v4, 1, !dbg !18
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%v13 = icmp eq i32 %v12, -1, !dbg !19
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br i1 %v13, label %end, label %loop, !dbg !20
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end: ; preds = %loop
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%v15 = phi i32 [ %v11, %loop ], !dbg !21
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%v16 = icmp ne i32 %v15, 0, !dbg !22
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ret i1 %v16, !dbg !23
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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: "test.ll", directory: "/")
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!2 = !{i32 16}
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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: "invariant_denom", linkageName: "invariant_denom", 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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!15 = !DILocation(line: 8, column: 1, scope: !5)
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!16 = !DILocation(line: 9, column: 1, scope: !5)
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!17 = !DILocation(line: 10, column: 1, scope: !5)
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!18 = !DILocation(line: 11, column: 1, scope: !5)
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!19 = !DILocation(line: 12, column: 1, scope: !5)
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!20 = !DILocation(line: 13, column: 1, scope: !5)
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!21 = !DILocation(line: 14, column: 1, scope: !5)
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!22 = !DILocation(line: 15, column: 1, scope: !5)
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!23 = !DILocation(line: 16, column: 1, scope: !5)
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