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Diffstat (limited to 'test/Transforms/LoopStrengthReduce/dont-hoist-simple-loop-constants.ll')
| -rw-r--r-- | test/Transforms/LoopStrengthReduce/dont-hoist-simple-loop-constants.ll | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/test/Transforms/LoopStrengthReduce/dont-hoist-simple-loop-constants.ll b/test/Transforms/LoopStrengthReduce/dont-hoist-simple-loop-constants.ll new file mode 100644 index 0000000..4136486 --- /dev/null +++ b/test/Transforms/LoopStrengthReduce/dont-hoist-simple-loop-constants.ll @@ -0,0 +1,23 @@ +; RUN: opt < %s -loop-reduce -S | \ +; RUN: not grep {bitcast i32 1 to i32} +; END. +; The setlt wants to use a value that is incremented one more than the dominant +; IV. Don't insert the 1 outside the loop, preventing folding it into the add. + +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 = phi i32 [ 0, %then.0 ], [ %indvar.next631, %no_exit.2 ] ; <i32> [#uses=4] + %gep.upgrd.1 = zext i32 %indvar630 to i64 ; <i64> [#uses=1] + %tmp.38 = getelementptr [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=2] + %tmp.34 = icmp slt i32 %inc.2, 701 ; <i1> [#uses=1] + %indvar.next631 = add i32 %indvar630, 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 +} + |