| ; RUN: opt < %s -loop-reduce -S | \ |
| ; RUN: grep "add i32 %indvar630.ui, 1" |
| ; |
| ; Make sure that the use of the IV outside of the loop (the store) uses the |
| ; post incremented value of the IV, not the preincremented value. This |
| ; prevents the loop from having to keep the post and pre-incremented value |
| ; around for the duration of the loop, adding a copy and an extra register |
| ; to the loop. |
| |
| declare i1 @pred(i32) |
| |
| define void @test(ptr %nbeaux_.0__558, ptr %i_.16574) { |
| then.0: |
| br label %no_exit.2 |
| no_exit.2: ; preds = %no_exit.2, %then.0 |
| %indvar630.ui = phi i32 [ 0, %then.0 ], [ %indvar.next631, %no_exit.2 ] ; <i32> [#uses=3] |
| %indvar630 = bitcast i32 %indvar630.ui to i32 ; <i32> [#uses=2] |
| %gep.upgrd.1 = zext i32 %indvar630.ui to i64 ; <i64> [#uses=1] |
| %tmp.38 = getelementptr [700 x i32], ptr %nbeaux_.0__558, i32 0, i64 %gep.upgrd.1 ; <ptr> [#uses=1] |
| store i32 0, ptr %tmp.38 |
| %inc.2 = add i32 %indvar630, 2 ; <i32> [#uses=1] |
| %tmp.34 = call i1 @pred( i32 %indvar630 ) ; <i1> [#uses=1] |
| %indvar.next631 = add i32 %indvar630.ui, 1 ; <i32> [#uses=1] |
| br i1 %tmp.34, label %no_exit.2, label %loopexit.2.loopexit |
| loopexit.2.loopexit: ; preds = %no_exit.2 |
| store i32 %inc.2, ptr %i_.16574 |
| ret void |
| } |
| |