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| -rw-r--r-- | test/Transforms/GCSE/2002-05-14-OperandSwap.ll | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/test/Transforms/GCSE/2002-05-14-OperandSwap.ll b/test/Transforms/GCSE/2002-05-14-OperandSwap.ll new file mode 100644 index 0000000000..a75e298f7f --- /dev/null +++ b/test/Transforms/GCSE/2002-05-14-OperandSwap.ll @@ -0,0 +1,18 @@ +; This entire chain of computation should be optimized away, but +; wasn't because the two multiplies were not detected as being identical. +; +; RUN: if as < %s | opt -gcse -instcombine -dce | dis | grep sub +; RUN: then exit 1 +; RUN: else exit 0 +; RUN: fi + +implementation ; Functions: + +uint "vnum_test4"(uint* %data) { + %reg1101 = load uint* %data, uint 1 + %reg1111 = load uint* %data, uint 3 + %reg109 = mul uint %reg1101, %reg1111 + %reg108 = mul uint %reg1111, %reg1101 + %reg121 = sub uint %reg108, %reg109 + ret uint %reg121 +} |