derek.holloway
7502bf64a4
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86 lines
3.4 KiB
LLVM
86 lines
3.4 KiB
LLVM
; RUN: opt -S -passes=jump-threading,verify %s | FileCheck %s
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;; Modified from llvm/test/Transforms/JumpThreading/thread-two-bbs.ll
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;;
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;; JumpThreading duplicates bb.cond2 to thread through bb.file to bb.file,
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;; bb.f2 or exit.
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;;
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;; Check the duplicated instructions get remapped atom groups.
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; CHECK: bb.cond2:
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; CHECK-NEXT: call void @f1()
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; CHECK-NEXT: %tobool1 = icmp eq i32 %cond2, 0, !dbg [[G1R2:!.*]]
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; CHECK-NEXT: br i1 %tobool1, label %bb.file, label %exit, !dbg [[G1R1:!.*]]
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; CHECK: bb.cond2.thread:
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; CHECK-NEXT: %tobool12 = icmp eq i32 %cond2, 0, !dbg [[G3R2:!.*]]
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; CHECK-NEXT: br i1 %tobool12, label %bb.f2, label %exit, !dbg [[G3R1:!.*]]
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;; After the transform %ptr is null through bb.cond2 and @a through
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;; bb.cond2.thread. Thread bb.cond2.thread->bb.f2 through bb.file.
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;; Check the duplicated store gets a remapped atom group too.
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; CHECK: bb.file:
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; CHECK-NEXT: %ptr3 = phi ptr [ null, %bb.cond2 ]
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; CHECK-NEXT: store ptr %ptr3, ptr %p, align 4, !dbg [[G2R1:!.*]]
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; CHECK: bb.f2:
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; CHECK-NEXT: store ptr @a, ptr %p, align 4, !dbg [[G4R1:!.*]]
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; CHECK: distinct !DISubprogram(name: "foo", {{.*}}keyInstructions: true)
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; CHECK: [[G1R2]] = !DILocation(line: 1, column: 1, scope: ![[#]], atomGroup: 1, atomRank: 2)
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; CHECK: [[G1R1]] = !DILocation(line: 1, column: 1, scope: ![[#]], atomGroup: 1, atomRank: 1)
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; CHECK: [[G3R2]] = !DILocation(line: 1, column: 1, scope: ![[#]], atomGroup: 3, atomRank: 2)
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; CHECK: [[G3R1]] = !DILocation(line: 1, column: 1, scope: ![[#]], atomGroup: 3, atomRank: 1)
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; CHECK: [[G2R1]] = !DILocation(line: 2, column: 1, scope: ![[#]], atomGroup: 2, atomRank: 1)
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; CHECK: [[G4R1]] = !DILocation(line: 2, column: 1, scope: ![[#]], atomGroup: 4, atomRank: 1)
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@a = global i32 0, align 4
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define void @foo(i32 %cond1, i32 %cond2, ptr %p) !dbg !5 {
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entry:
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%tobool = icmp eq i32 %cond1, 0
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br i1 %tobool, label %bb.cond2, label %bb.f1
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bb.f1: ; preds = %entry
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call void @f1()
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br label %bb.cond2
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bb.cond2: ; preds = %bb.f1, %entry
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%ptr = phi ptr [ null, %bb.f1 ], [ @a, %entry ]
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%tobool1 = icmp eq i32 %cond2, 0, !dbg !9
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br i1 %tobool1, label %bb.file, label %exit, !dbg !10
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bb.file: ; preds = %bb.cond2
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store ptr %ptr, ptr %p, align 4, !dbg !11
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%cmp = icmp eq ptr %ptr, null
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br i1 %cmp, label %exit, label %bb.f2
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bb.f2: ; preds = %bb.file
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call void @f2()
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br label %exit
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exit: ; preds = %bb.f2, %bb.file, %bb.cond2
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ret void
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}
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declare void @f1()
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declare void @f2()
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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: "<stdin>", 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: "foo", linkageName: "foo", scope: null, file: !1, line: 1, type: !6, scopeLine: 1, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, keyInstructions: true)
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!6 = !DISubroutineType(types: !7)
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!7 = !{}
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!9 = !DILocation(line: 1, column: 1, scope: !5, atomGroup: 1, atomRank: 2)
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!10 = !DILocation(line: 1, column: 1, scope: !5, atomGroup: 1, atomRank: 1)
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!11 = !DILocation(line: 2, column: 1, scope: !5, atomGroup: 2, atomRank: 1)
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