r322245 - [X86] Make -mavx512f imply -mfma and -mf16c in the frontend like it does in the backend.

[Craig Topper via cfe-commits]

Author: ctopper
Date: Wed Jan 10 17:37:59 2018
New Revision: 322245

URL: http://llvm.org/viewvc/llvm-project?rev=322245&view=rev
Log:
[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.

Modified:
    cfe/trunk/lib/Basic/Targets/X86.cpp

Modified: cfe/trunk/lib/Basic/Targets/X86.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Basic/Targets/X86.cpp?rev=322245&r1=322244&r2=322245&view=diff
==============================================================================
--- cfe/trunk/lib/Basic/Targets/X86.cpp (original)
+++ cfe/trunk/lib/Basic/Targets/X86.cpp Wed Jan 10 17:37:59 2018
@@ -430,7 +430,7 @@ void X86TargetInfo::setSSELevel(llvm::St
   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::setFeatureEnabledImp
   } 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::setFeatureEnabledImp
   } 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);