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Select [mem] += Val operations. For constants, we used to get: mov %ECX, -32768 add %ECX, DWORD PTR [l4_match_start] mov DWORD PTR [l4_match_start], %ECX Now we get: add DWORD PTR [l4_match_start], -32768 For other values we used to get: mov %EBP, %EDI ;; because the add destroys the value add %EBP, DWORD PTR [l4_input_len] mov DWORD PTR [l4_input_len], %EBP now we get: add DWORD PTR [l4_input_len], %EDI Both of these use less registers than the alternative, are faster and smaller. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19488 91177308-0d34-0410-b5e6-96231b3b80d8
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