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[X86] Make -mavx512f imply -mfma and -mf16c in the frontend like it does in the backend. 

Similarly, make -mno-fma and -mno-f16c imply -mno-avx512f.

Withou this  "-mno-sse -mavx512f" ends up with avx512f being enabled in the frontend but disabled in the backend.

llvm-svn: 322245
This commit is contained in:
Craig Topper 2018-01-11 01:37:59 +00:00
parent 8e63fc70be
commit a1ef12a051
1 changed files with 5 additions and 1 deletions
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6
clang/lib/Basic/Targets/X86.cpp
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@ -430,7 +430,7 @@ void X86TargetInfo::setSSELevel(llvm::StringMap<bool> &Features,
if (Enabled) {
switch (Level) {
case AVX512F:
Features["avx512f"] = true;
Features["avx512f"] = Features["fma"] = Features["f16c"] = true;
LLVM_FALLTHROUGH;
case AVX2:
Features["avx2"] = true;
@ -644,6 +644,8 @@ void X86TargetInfo::setFeatureEnabledImpl(llvm::StringMap<bool> &Features,
} else if (Name == "fma") {
if (Enabled)
setSSELevel(Features, AVX, Enabled);
else
setSSELevel(Features, AVX512F, Enabled);
} else if (Name == "fma4") {
setXOPLevel(Features, FMA4, Enabled);
} else if (Name == "xop") {
@ -653,6 +655,8 @@ void X86TargetInfo::setFeatureEnabledImpl(llvm::StringMap<bool> &Features,
} else if (Name == "f16c") {
if (Enabled)
setSSELevel(Features, AVX, Enabled);
else
setSSELevel(Features, AVX512F, Enabled);
} else if (Name == "sha") {
if (Enabled)
setSSELevel(Features, SSE2, Enabled);