| ; RUN: llvm-as < %s | opt -loop-reduce | llvm-dis | grep 'add uint %iv.*inc, 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 bool %pred(int %X) |
| |
| void %test([700 x int]* %nbeaux_.0__558, int* %i_.16574) { |
| then.0: |
| br label %no_exit.2 |
| |
| no_exit.2: ; preds = %no_exit.2, %then.0 |
| %indvar630 = phi uint [ 0, %then.0 ], [ %indvar.next631, %no_exit.2 ] ; <uint> [#uses=3] |
| %indvar630 = cast uint %indvar630 to int ; <int> [#uses=1] |
| %tmp.38 = getelementptr [700 x int]* %nbeaux_.0__558, int 0, uint %indvar630 ; <int*> [#uses=1] |
| store int 0, int* %tmp.38 |
| %inc.2 = add int %indvar630, 2 ; <int> [#uses=2] |
| %tmp.34 = call bool %pred(int %indvar630) |
| %indvar.next631 = add uint %indvar630, 1 ; <uint> [#uses=1] |
| br bool %tmp.34, label %no_exit.2, label %loopexit.2.loopexit |
| |
| loopexit.2.loopexit: ; preds = %no_exit.2 |
| store int %inc.2, int* %i_.16574 |
| ret void |
| } |