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Diffstat (limited to 'test/Analysis/ScalarEvolution/trip-count.ll')
-rw-r--r-- | test/Analysis/ScalarEvolution/trip-count.ll | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/test/Analysis/ScalarEvolution/trip-count.ll b/test/Analysis/ScalarEvolution/trip-count.ll new file mode 100644 index 0000000..d750d4a --- /dev/null +++ b/test/Analysis/ScalarEvolution/trip-count.ll @@ -0,0 +1,29 @@ +; RUN: opt < %s -analyze -scalar-evolution \ +; RUN: -scalar-evolution-max-iterations=0 | grep {backedge-taken count is 10000} +; PR1101 + +@A = weak global [1000 x i32] zeroinitializer, align 32 + + +define void @test(i32 %N) { +entry: + "alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0] + br label %bb3 + +bb: ; preds = %bb3 + %tmp = getelementptr [1000 x i32]* @A, i32 0, i32 %i.0 ; <i32*> [#uses=1] + store i32 123, i32* %tmp + %tmp2 = add i32 %i.0, 1 ; <i32> [#uses=1] + br label %bb3 + +bb3: ; preds = %bb, %entry + %i.0 = phi i32 [ 0, %entry ], [ %tmp2, %bb ] ; <i32> [#uses=3] + %tmp3 = icmp sle i32 %i.0, 9999 ; <i1> [#uses=1] + br i1 %tmp3, label %bb, label %bb5 + +bb5: ; preds = %bb3 + br label %return + +return: ; preds = %bb5 + ret void +} |