| ; The loop sinker was running from the bottom of the loop to the top, causing |
| ; it to miss opportunities to sink instructions that depended on sinking other |
| ; instructions from the loop. Instead they got hoisted, which is better than |
| ; leaving them in the loop, but increases register pressure pointlessly. |
| |
| ; RUN: llvm-as < %s | opt -licm | llvm-dis | \ |
| ; RUN: %prcontext getelementptr 1 | grep Out: |
| |
| %Ty = type { i32, i32 } |
| @X = external global %Ty ; <%Ty*> [#uses=1] |
| |
| define i32 @test() { |
| br label %Loop |
| Loop: ; preds = %Loop, %0 |
| %dead = getelementptr %Ty* @X, i64 0, i32 0 ; <i32*> [#uses=1] |
| %sunk2 = load i32* %dead ; <i32> [#uses=1] |
| br i1 false, label %Loop, label %Out |
| Out: ; preds = %Loop |
| ret i32 %sunk2 |
| } |
| |
