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- ; 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([700 x i32]* %nbeaux_.0__558, i32* %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], [700 x i32]* %nbeaux_.0__558, i32 0, i64 %gep.upgrd.1 ; <i32*> [#uses=1]
- store i32 0, i32* %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, i32* %i_.16574
- ret void
- }
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