26 lines
900 B
LLVM
26 lines
900 B
LLVM
; RUN: opt < %s -instcombine -mem2reg -simplifycfg -simplifycfg-require-and-preserve-domtree=1 | \
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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 ; <ptr> [#uses=3]
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%X2 = alloca i32 ; <ptr> [#uses=2]
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store i32 1, ptr %X
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store i32 2, ptr %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 ptr [ %X, %cond_true.i ], [ %X2, %entry ] ; <ptr> [#uses=1]
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store i32 3, ptr %X
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%tmp.3 = load i32, ptr %mem_tmp.i.0 ; <i32> [#uses=1]
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ret i32 %tmp.3
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}
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