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[X86] Disable CLWB in Cannon Lake 

Cannon Lake does not support CLWB, therefore it
does not include all features listed under SKX.

Patch by Gabor Buella

Differential Revision: https://reviews.llvm.org/D43459

llvm-svn: 325655
This commit is contained in:
Craig Topper 2018-02-21 00:16:50 +00:00
parent d710adac2d
commit 94a940d2b4
2 changed files with 4 additions and 3 deletions
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1
clang/lib/Basic/Targets/X86.cpp
View File

@ -175,6 +175,7 @@ bool X86TargetInfo::initFeatureMap(
setFeatureEnabledImpl(Features, "avx512bw", true);
setFeatureEnabledImpl(Features, "avx512vl", true);
setFeatureEnabledImpl(Features, "pku", true);
if (Kind != CK_Cannonlake) // CNL inherits all SKX features, except CLWB
setFeatureEnabledImpl(Features, "clwb", true);
LLVM_FALLTHROUGH;
case CK_SkylakeClient:

4
clang/test/Preprocessor/predefined-arch-macros.c
View File

@ -974,7 +974,7 @@
// CHECK_CNL_M32: #define __BMI2__ 1
// CHECK_CNL_M32: #define __BMI__ 1
// CHECK_CNL_M32: #define __CLFLUSHOPT__ 1
// CHECK_CNL_M32: #define __CLWB__ 1
// CHECK_CNL_M32-NOT: #define __CLWB__ 1
// CHECK_CNL_M32: #define __F16C__ 1
// CHECK_CNL_M32: #define __FMA__ 1
// CHECK_CNL_M32: #define __LZCNT__ 1
@ -1022,7 +1022,7 @@
// CHECK_CNL_M64: #define __BMI2__ 1
// CHECK_CNL_M64: #define __BMI__ 1
// CHECK_CNL_M64: #define __CLFLUSHOPT__ 1
// CHECK_CNL_M64: #define __CLWB__ 1
// CHECK_CNL_M64-NOT: #define __CLWB__ 1
// CHECK_CNL_M64: #define __F16C__ 1
// CHECK_CNL_M64: #define __FMA__ 1
// CHECK_CNL_M64: #define __LZCNT__ 1