21 lines
474 B
LLVM
21 lines
474 B
LLVM
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; RUN: opt -gvn -S < %s | FileCheck %s
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; Check that an unreachable predecessor to a PHI node doesn't cause a crash.
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; PR21625.
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define i32 @f(i32** %f) {
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; CHECK: bb0:
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; Load should be removed, since it's ignored.
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; CHECK-NEXT: br label
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bb0:
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%bar = load i32*, i32** %f
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br label %bb2
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bb1:
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%zed = load i32*, i32** %f
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br i1 false, label %bb1, label %bb2
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bb2:
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%foo = phi i32* [ null, %bb0 ], [ %zed, %bb1 ]
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%storemerge = load i32, i32* %foo
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ret i32 %storemerge
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}
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