1 ; RUN: opt < %s -loop-reduce -S | \ 2 ; RUN: grep {add i32 %indvar630.ui, 1} 3 ; 4 ; Make sure that the use of the IV outside of the loop (the store) uses the 5 ; post incremented value of the IV, not the preincremented value. This 6 ; prevents the loop from having to keep the post and pre-incremented value 7 ; around for the duration of the loop, adding a copy and an extra register 8 ; to the loop. 9 10 declare i1 @pred(i32) 11 12 define void @test([700 x i32]* %nbeaux_.0__558, i32* %i_.16574) { 13 then.0: 14 br label %no_exit.2 15 no_exit.2: ; preds = %no_exit.2, %then.0 16 %indvar630.ui = phi i32 [ 0, %then.0 ], [ %indvar.next631, %no_exit.2 ] ; <i32> [#uses=3] 17 %indvar630 = bitcast i32 %indvar630.ui to i32 ; <i32> [#uses=2] 18 %gep.upgrd.1 = zext i32 %indvar630.ui to i64 ; <i64> [#uses=1] 19 %tmp.38 = getelementptr [700 x i32]* %nbeaux_.0__558, i32 0, i64 %gep.upgrd.1 ; <i32*> [#uses=1] 20 store i32 0, i32* %tmp.38 21 %inc.2 = add i32 %indvar630, 2 ; <i32> [#uses=1] 22 %tmp.34 = call i1 @pred( i32 %indvar630 ) ; <i1> [#uses=1] 23 %indvar.next631 = add i32 %indvar630.ui, 1 ; <i32> [#uses=1] 24 br i1 %tmp.34, label %no_exit.2, label %loopexit.2.loopexit 25 loopexit.2.loopexit: ; preds = %no_exit.2 26 store i32 %inc.2, i32* %i_.16574 27 ret void 28 } 29 30
