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| -rw-r--r-- | test/Transforms/InstCombine/2003-08-12-AllocaNonNull.ll | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/2003-08-12-AllocaNonNull.ll b/test/Transforms/InstCombine/2003-08-12-AllocaNonNull.ll new file mode 100644 index 0000000000..335b884694 --- /dev/null +++ b/test/Transforms/InstCombine/2003-08-12-AllocaNonNull.ll @@ -0,0 +1,22 @@ +; This testcase can be simplified by "realizing" that alloca can never return +; null. +; RUN: as < %s | opt -instcombine -simplifycfg | dis | not grep 'br ' + +implementation ; Functions: + +declare int %bitmap_clear(...) + +int %oof() { +entry: + %live_head = alloca int ; <int*> [#uses=2] + %tmp.1 = setne int* %live_head, null ; <bool> [#uses=1] + br bool %tmp.1, label %then, label %UnifiedExitNode + +then: + %tmp.4 = call int (...)* %bitmap_clear( int* %live_head ) ; <int> [#uses=0] + br label %UnifiedExitNode + +UnifiedExitNode: + ret int 0 +} + |