| ; RUN: opt < %s -instcombine -mem2reg -S | grep "%A = alloca" |
| ; RUN: opt < %s -instcombine -mem2reg -S | \ |
| ; RUN: not grep "%B = alloca" |
| ; END. |
| |
| ; Ensure that instcombine doesn't sink the loads in entry/cond_true into |
| ; cond_next. Doing so prevents mem2reg from promoting the B alloca. |
| |
| define i32 @test2(i32 %C) { |
| entry: |
| %A = alloca i32 |
| %B = alloca i32 |
| %tmp = call i32 (...) @bar( i32* %A ) ; <i32> [#uses=0] |
| %T = load i32, i32* %A ; <i32> [#uses=1] |
| %tmp2 = icmp eq i32 %C, 0 ; <i1> [#uses=1] |
| br i1 %tmp2, label %cond_next, label %cond_true |
| |
| cond_true: ; preds = %entry |
| store i32 123, i32* %B |
| call i32 @test2( i32 123 ) ; <i32>:0 [#uses=0] |
| %T1 = load i32, i32* %B ; <i32> [#uses=1] |
| br label %cond_next |
| |
| cond_next: ; preds = %cond_true, %entry |
| %tmp1.0 = phi i32 [ %T1, %cond_true ], [ %T, %entry ] ; <i32> [#uses=1] |
| %tmp7 = call i32 (...) @baq( ) ; <i32> [#uses=0] |
| %tmp8 = call i32 (...) @baq( ) ; <i32> [#uses=0] |
| %tmp9 = call i32 (...) @baq( ) ; <i32> [#uses=0] |
| %tmp10 = call i32 (...) @baq( ) ; <i32> [#uses=0] |
| %tmp11 = call i32 (...) @baq( ) ; <i32> [#uses=0] |
| %tmp12 = call i32 (...) @baq( ) ; <i32> [#uses=0] |
| %tmp13 = call i32 (...) @baq( ) ; <i32> [#uses=0] |
| %tmp14 = call i32 (...) @baq( ) ; <i32> [#uses=0] |
| %tmp15 = call i32 (...) @baq( ) ; <i32> [#uses=0] |
| %tmp16 = call i32 (...) @baq( ) ; <i32> [#uses=0] |
| %tmp17 = call i32 (...) @baq( ) ; <i32> [#uses=0] |
| %tmp18 = call i32 (...) @baq( ) ; <i32> [#uses=0] |
| %tmp19 = call i32 (...) @baq( ) ; <i32> [#uses=0] |
| %tmp20 = call i32 (...) @baq( ) ; <i32> [#uses=0] |
| ret i32 %tmp1.0 |
| } |
| |
| declare i32 @bar(...) |
| |
| declare i32 @baq(...) |
