derek.holloway
7502bf64a4
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60 lines
2.4 KiB
LLVM
60 lines
2.4 KiB
LLVM
; RUN: opt -S -passes=loop-reduce -mtriple=x86_64-unknown-unknown < %s | FileCheck %s
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; Check that LoopStrengthReduce's OptimizeShadowIV() propagates the debug
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; locations of the old phi (`%accum`) and binop (`%accum.next`) instruction
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; to the new phi and binop instruction, respectively.
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target datalayout = "n8:16:32:64"
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define i32 @foobar6() !dbg !5 {
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; CHECK-LABEL: define i32 @foobar6(
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; CHECK: loop:
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; CHECK: [[IV_S_:%.*]] = phi double [ -3.220000e+03, %[[ENTRY:.*]] ], [ [[IV_S_NEXT_:%.*]], %loop ], !dbg [[DBG9:![0-9]+]]
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; CHECK: [[IV_S_NEXT_]] = fadd double [[IV_S_]], f0x41624E65A0000000, !dbg [[DBG11:![0-9]+]]
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; CHECK: exit:
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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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%accum = phi i32 [ -3220, %entry ], [ %accum.next, %loop ], !dbg !9
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%iv = phi i32 [ 12, %entry ], [ %iv.next, %loop ], !dbg !10
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%tmp1 = sitofp i32 %accum to double, !dbg !11
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tail call void @foo(double %tmp1), !dbg !12
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%accum.next = add nsw i32 %accum, 9597741, !dbg !13
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%iv.next = add nuw nsw i32 %iv, 1, !dbg !14
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%exitcond = icmp ugt i32 %iv, 235, !dbg !15
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br i1 %exitcond, label %exit, label %loop, !dbg !16
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exit: ; preds = %loop
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ret i32 %accum.next, !dbg !17
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}
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declare void @foo(double)
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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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; CHECK: [[DBG9]] = !DILocation(line: 2,
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; CHECK: [[DBG11]] = !DILocation(line: 6,
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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: "main.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: "foobar6", linkageName: "foobar6", 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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