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https://github.com/c64scene-ar/llvm-6502.git
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fddaa3193c
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50560 91177308-0d34-0410-b5e6-96231b3b80d8
26 lines
869 B
LLVM
26 lines
869 B
LLVM
; RUN: llvm-as < %s | opt -instcombine -mem2reg -simplifycfg | \
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; RUN: llvm-dis | grep -v store | not grep {i32 1}
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; Test to make sure that instcombine does not accidentally propagate the load
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; into the PHI, which would break the program.
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define i32 @test(i1 %C) {
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entry:
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%X = alloca i32 ; <i32*> [#uses=3]
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%X2 = alloca i32 ; <i32*> [#uses=2]
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store i32 1, i32* %X
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store i32 2, i32* %X2
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br i1 %C, label %cond_true.i, label %cond_continue.i
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cond_true.i: ; preds = %entry
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br label %cond_continue.i
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cond_continue.i: ; preds = %cond_true.i, %entry
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%mem_tmp.i.0 = phi i32* [ %X, %cond_true.i ], [ %X2, %entry ] ; <i32*> [#uses=1]
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store i32 3, i32* %X
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%tmp.3 = load i32* %mem_tmp.i.0 ; <i32> [#uses=1]
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ret i32 %tmp.3
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}
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