| ; RUN: opt < %s -instcombine -mem2reg -simplifycfg | \ |
| ; RUN: llvm-dis | grep -v store | not grep "i32 1" |
| |
| ; Test to make sure that instcombine does not accidentally propagate the load |
| ; into the PHI, which would break the program. |
| |
| define i32 @test(i1 %C) { |
| entry: |
| %X = alloca i32 ; <i32*> [#uses=3] |
| %X2 = alloca i32 ; <i32*> [#uses=2] |
| store i32 1, i32* %X |
| store i32 2, i32* %X2 |
| br i1 %C, label %cond_true.i, label %cond_continue.i |
| |
| cond_true.i: ; preds = %entry |
| br label %cond_continue.i |
| |
| cond_continue.i: ; preds = %cond_true.i, %entry |
| %mem_tmp.i.0 = phi i32* [ %X, %cond_true.i ], [ %X2, %entry ] ; <i32*> [#uses=1] |
| store i32 3, i32* %X |
| %tmp.3 = load i32* %mem_tmp.i.0 ; <i32> [#uses=1] |
| ret i32 %tmp.3 |
| } |
| |
| |
