[X86] Add -mclflushopt/-mno-clflushopt command line support and __CLFLUSHOPT__ define to match gcc.

llvm-svn: 294411

6 files changed, 23 insertions, 0 deletions

diff --git a/clang/docs/ClangCommandLineReference.rst b/clang/docs/ClangCommandLineReference.rst
index 7d4cc5d2c1e..b8b3407bfe0 100644
--- a/clang/docs/ClangCommandLineReference.rst
+++ b/clang/docs/ClangCommandLineReference.rst
@@ -2163,6 +2163,8 @@ X86
 
 .. option:: -mbmi2, -mno-bmi2
 
+.. option:: -mclflushopt, -mno-clflushopt
+
 .. option:: -mcx16, -mno-cx16
 
 .. option:: -mf16c, -mno-f16c
diff --git a/clang/include/clang/Driver/Options.td b/clang/include/clang/Driver/Options.td
index fe70a410542..83d7beaee8c 100644
--- a/clang/include/clang/Driver/Options.td
+++ b/clang/include/clang/Driver/Options.td
@@ -1715,6 +1715,7 @@ def mno_xsavec : Flag<["-"], "mno-xsavec">, Group<m_x86_Features_Group>;
 def mno_xsaves : Flag<["-"], "mno-xsaves">, Group<m_x86_Features_Group>;
 def mno_mwaitx : Flag<["-"], "mno-mwaitx">, Group<m_x86_Features_Group>;
 def mno_pku : Flag<["-"], "mno-pku">, Group<m_x86_Features_Group>;
+def mno_clflushopt : Flag<["-"], "mno-clflushopt">, Group<m_x86_Features_Group>;
 
 def munaligned_access : Flag<["-"], "munaligned-access">, Group<m_arm_Features_Group>,
   HelpText<"Allow memory accesses to be unaligned (AArch32/AArch64 only)">;
@@ -1907,6 +1908,7 @@ def mxsaveopt : Flag<["-"], "mxsaveopt">, Group<m_x86_Features_Group>;
 def mxsavec : Flag<["-"], "mxsavec">, Group<m_x86_Features_Group>;
 def mxsaves : Flag<["-"], "mxsaves">, Group<m_x86_Features_Group>;
 def mmwaitx : Flag<["-"], "mmwaitx">, Group<m_x86_Features_Group>;
+def mclflushopt : Flag<["-"], "mclflushopt">, Group<m_x86_Features_Group>;
 def mips16 : Flag<["-"], "mips16">, Group<m_Group>;
 def mno_mips16 : Flag<["-"], "mno-mips16">, Group<m_Group>;
 def mmicromips : Flag<["-"], "mmicromips">, Group<m_Group>;
diff --git a/clang/lib/Basic/Targets.cpp b/clang/lib/Basic/Targets.cpp
index 851d3f606c4..c0473a53762 100644
--- a/clang/lib/Basic/Targets.cpp
+++ b/clang/lib/Basic/Targets.cpp
@@ -3881,6 +3881,8 @@ void X86TargetInfo::getTargetDefines(const LangOptions &Opts,
     Builder.defineMacro("__PKU__");
   if (HasCX16)
     Builder.defineMacro("__GCC_HAVE_SYNC_COMPARE_AND_SWAP_16");
+  if (HasCLFLUSHOPT)
+    Builder.defineMacro("__CLFLUSHOPT__");
 
   // Each case falls through to the previous one here.
   switch (SSELevel) {
diff --git a/clang/test/Driver/x86-target-features.c b/clang/test/Driver/x86-target-features.c
index ce35b2cfd0d..c254efe57a7 100644
--- a/clang/test/Driver/x86-target-features.c
+++ b/clang/test/Driver/x86-target-features.c
@@ -49,3 +49,8 @@
 // RUN: %clang -target i386-unknown-linux-gnu -march=i386 -mno-xsave -mno-xsaveopt -mno-xsavec -mno-xsaves %s -### -o %t.o 2>&1 | FileCheck -check-prefix=NO-XSAVE %s
 // XSAVE: "-target-feature" "+xsave" "-target-feature" "+xsaveopt" "-target-feature" "+xsavec" "-target-feature" "+xsaves"
 // NO-XSAVE: "-target-feature" "-xsave" "-target-feature" "-xsaveopt" "-target-feature" "-xsavec" "-target-feature" "-xsaves"
+
+// RUN: %clang -target i386-unknown-linux-gnu -march=i386 -mclflushopt %s -### -o %t.o 2>&1 | FileCheck -check-prefix=CLFLUSHOPT %s
+// RUN: %clang -target i386-unknown-linux-gnu -march=i386 -mno-clflushopt %s -### -o %t.o 2>&1 | FileCheck -check-prefix=NO-CLFLUSHOPT %s
+// CLFLUSHOPT: "-target-feature" "+clflushopt"
+// NO-CLFLUSHOPT: "-target-feature" "-clflushopt"
diff --git a/clang/test/Preprocessor/predefined-arch-macros.c b/clang/test/Preprocessor/predefined-arch-macros.c
index 1e3d5c175c1..66a5e62aa9e 100644
--- a/clang/test/Preprocessor/predefined-arch-macros.c
+++ b/clang/test/Preprocessor/predefined-arch-macros.c
@@ -651,6 +651,7 @@
 // CHECK_SKL_M32: #define __AVX__ 1
 // CHECK_SKL_M32: #define __BMI2__ 1
 // CHECK_SKL_M32: #define __BMI__ 1
+// CHECK_SKL_M32: #define __CLFLUSHOPT__ 1
 // CHECK_SKL_M32: #define __F16C__ 1
 // CHECK_SKL_M32: #define __FMA__ 1
 // CHECK_SKL_M32: #define __LZCNT__ 1
@@ -681,6 +682,7 @@
 // CHECK_SKL_M64: #define __AVX__ 1
 // CHECK_SKL_M64: #define __BMI2__ 1
 // CHECK_SKL_M64: #define __BMI__ 1
+// CHECK_SKL_M64: #define __CLFLUSHOPT__ 1
 // CHECK_SKL_M64: #define __F16C__ 1
 // CHECK_SKL_M64: #define __FMA__ 1
 // CHECK_SKL_M64: #define __LZCNT__ 1
@@ -793,6 +795,7 @@
 // CHECK_SKX_M32: #define __AVX__ 1
 // CHECK_SKX_M32: #define __BMI2__ 1
 // CHECK_SKX_M32: #define __BMI__ 1
+// CHECK_SKX_M32: #define __CLFLUSHOPT__ 1
 // CHECK_SKX_M32: #define __F16C__ 1
 // CHECK_SKX_M32: #define __FMA__ 1
 // CHECK_SKX_M32: #define __LZCNT__ 1
@@ -831,6 +834,7 @@
 // CHECK_SKX_M64: #define __AVX__ 1
 // CHECK_SKX_M64: #define __BMI2__ 1
 // CHECK_SKX_M64: #define __BMI__ 1
+// CHECK_SKX_M64: #define __CLFLUSHOPT__ 1
 // CHECK_SKX_M64: #define __F16C__ 1
 // CHECK_SKX_M64: #define __FMA__ 1
 // CHECK_SKX_M64: #define __LZCNT__ 1
@@ -874,6 +878,7 @@
 // CHECK_CNL_M32: #define __AVX__ 1
 // CHECK_CNL_M32: #define __BMI2__ 1
 // CHECK_CNL_M32: #define __BMI__ 1
+// CHECK_CNL_M32: #define __CLFLUSHOPT__ 1
 // CHECK_CNL_M32: #define __F16C__ 1
 // CHECK_CNL_M32: #define __FMA__ 1
 // CHECK_CNL_M32: #define __LZCNT__ 1
@@ -912,6 +917,7 @@
 // CHECK_CNL_M64: #define __AVX__ 1
 // CHECK_CNL_M64: #define __BMI2__ 1
 // CHECK_CNL_M64: #define __BMI__ 1
+// CHECK_CNL_M64: #define __CLFLUSHOPT__ 1
 // CHECK_CNL_M64: #define __F16C__ 1
 // CHECK_CNL_M64: #define __FMA__ 1
 // CHECK_CNL_M64: #define __LZCNT__ 1
@@ -1860,6 +1866,7 @@
 // CHECK_ZNVER1_M32: #define __AVX__ 1
 // CHECK_ZNVER1_M32: #define __BMI2__ 1
 // CHECK_ZNVER1_M32: #define __BMI__ 1
+// CHECK_ZNVER1_M32: #define __CLFLUSHOPT__ 1
 // CHECK_ZNVER1_M32: #define __F16C__ 1
 // CHECK_ZNVER1_M32: #define __FMA__ 1
 // CHECK_ZNVER1_M32: #define __FSGSBASE__ 1
@@ -1900,6 +1907,7 @@
 // CHECK_ZNVER1_M64: #define __AVX__ 1
 // CHECK_ZNVER1_M64: #define __BMI2__ 1
 // CHECK_ZNVER1_M64: #define __BMI__ 1
+// CHECK_ZNVER1_M64: #define __CLFLUSHOPT__ 1
 // CHECK_ZNVER1_M64: #define __F16C__ 1
 // CHECK_ZNVER1_M64: #define __FMA__ 1
 // CHECK_ZNVER1_M64: #define __FSGSBASE__ 1
diff --git a/clang/test/Preprocessor/x86_target_features.c b/clang/test/Preprocessor/x86_target_features.c
index 43cf615546b..a201900ba76 100644
--- a/clang/test/Preprocessor/x86_target_features.c
+++ b/clang/test/Preprocessor/x86_target_features.c
@@ -352,3 +352,7 @@
 
 // NOXSAVE-NOT: #define __XSAVEOPT__ 1
 // NOXSAVE-NOT: #define __XSAVE__ 1
+
+// RUN: %clang -target i386-unknown-unknown -march=atom -mclflushopt -x c -E -dM -o - %s | FileCheck -match-full-lines --check-prefix=CLFLUSHOPT %s
+
+// CLFLUSHOPT: #define __CLFLUSHOPT__ 1