forked from OSchip/llvm-project
31 lines
762 B
LLVM
31 lines
762 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -passes=jump-threading -verify-each -mtriple=x86_64-- < %s | FileCheck %s
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define void @foo() {
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; CHECK-LABEL: @foo(
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; CHECK-NEXT: B:
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; CHECK-NEXT: [[Z:%.*]] = add i32 undef, 1
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; CHECK-NEXT: [[CMP:%.*]] = icmp ne i32 [[Z]], 0
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; CHECK-NEXT: br i1 [[CMP]], label [[EXIT:%.*]], label [[B_THREAD:%.*]]
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; CHECK: B.thread:
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: exit:
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; CHECK-NEXT: ret void
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;
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entry:
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br i1 false, label %A, label %B
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A:
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%x = phi i32 [ undef, %entry ], [ %z, %B ]
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br label %B
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B:
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%y = phi i32 [ undef, %entry ], [ %x, %A ]
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%z = add i32 %y, 1
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%cmp = icmp ne i32 %z, 0
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br i1 %cmp, label %exit, label %A
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exit:
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ret void
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}
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