[llvm-bugs] [Bug 42659] New: x86 FeatureAVX2 ought to imply FeatureFMA

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=42659

            Bug ID: 42659
           Summary: x86 FeatureAVX2 ought to imply FeatureFMA
           Product: new-bugs
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: dgross at google.com
                CC: htmldeveloper at gmail.com, llvm-bugs at lists.llvm.org

Discussed here:
https://android-review.googlesource.com/c/platform/frameworks/ml/+/975323/2#message-7a51026cf2d1d2d51fbde40e78b064d37a078567

If I pass -mavx2 to the compiler, I should not need to pass -mfma also in order
to get FMA synthesis: Every AVX2 implementation supports FMA.

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