Wei Mi <w...@google.com> writes: >> Checking corei7/corei7-avx explicitly isn't a good idea. >> It is also useful for Ivy Bridge and Haswell. I think you >> should use a variable to control it, similar to >> TARGET_FUSE_CMP_AND_BRANCH. >> >> >> -- >> H.J. > > Different x86 microarchitectures support macro-fusion for different > compare and branch combinations. I need to differentiate various x86 > microarchitectures. If use TARGET_FUSE_CMP_AND_BRANCH like vars to > control it, it requires a bunch of them. That is why I choose to check > corei7/corei7-avx in that function. I don't add core-avx-i/core-avx2 > for now because I don't have those machines for testing.
They are normally a super set of each other. So flags as suggested by HJ will work better than explicit matches. -Andi
