forked from OSchip/llvm-project
28 lines
772 B
LLVM
28 lines
772 B
LLVM
; REQUIRES: asserts
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; RUN: opt -newgvn -S %s | FileCheck %s
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; XFAIL: *
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; TODO: Current NewGVN crashes on the function below. See PR37121.
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define hidden void @foo() {
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top:
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%.promoted = load i8, i8* undef, align 8
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br label %if
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;; This is really a multi-valued phi, because the phi is defined by an expression of the phi.
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;; This means that we can't propagate the value over the backedge, because we'll just cycle
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;; through every value.
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if: ; preds = %if, %top
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%0 = phi i8 [ %1, %if ], [ %.promoted, %top ]
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%1 = xor i8 %0, undef
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br i1 false, label %L50, label %if
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L50: ; preds = %if
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%.lcssa = phi i8 [ %1, %if ]
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store i8 %.lcssa, i8* undef, align 8
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ret void
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}
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