Add PRFCHW intrinsic support

- Add head 'prfchwintrin.h' to define '_m_prefetchw' which is mapped to
  LLVM/clang prefetch builtin
- Add option '-mprfchw' to enable PRFCHW feature and pre-define '__PRFCHW__'
  macro



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@178041 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 17 insertions, 2 deletions

diff --git a/lib/Basic/Targets.cpp b/lib/Basic/Targets.cpp
index b7cd3dce7c..09d8be682f 100644
--- a/lib/Basic/Targets.cpp
+++ b/lib/Basic/Targets.cpp
@@ -1701,6 +1701,7 @@ class X86TargetInfo : public TargetInfo {
   bool HasBMI2;
   bool HasPOPCNT;
   bool HasRTM;
+  bool HasPRFCHW;
   bool HasSSE4a;
   bool HasFMA4;
   bool HasFMA;
@@ -1852,8 +1853,8 @@ public:
     : TargetInfo(triple), SSELevel(NoSSE), MMX3DNowLevel(NoMMX3DNow),
       HasAES(false), HasPCLMUL(false), HasLZCNT(false), HasRDRND(false),
       HasBMI(false), HasBMI2(false), HasPOPCNT(false), HasRTM(false),
-      HasSSE4a(false), HasFMA4(false), HasFMA(false), HasXOP(false),
-      HasF16C(false), CPU(CK_Generic) {
+      HasPRFCHW(false), HasSSE4a(false), HasFMA4(false),
+      HasFMA(false), HasXOP(false), HasF16C(false), CPU(CK_Generic) {
     BigEndian = false;
     LongDoubleFormat = &llvm::APFloat::x87DoubleExtended;
   }
@@ -2059,6 +2060,7 @@ void X86TargetInfo::getDefaultFeatures(llvm::StringMap<bool> &Features) const {
   Features["bmi2"] = false;
   Features["popcnt"] = false;
   Features["rtm"] = false;
+  Features["prfchw"] = false;
   Features["fma4"] = false;
   Features["fma"] = false;
   Features["xop"] = false;
@@ -2281,6 +2283,8 @@ bool X86TargetInfo::setFeatureEnabled(llvm::StringMap<bool> &Features,
       Features["f16c"] = true;
     else if (Name == "rtm")
       Features["rtm"] = true;
+    else if (Name == "prfchw")
+      Features["prfchw"] = true;
   } else {
     if (Name == "mmx")
       Features["mmx"] = Features["3dnow"] = Features["3dnowa"] = false;
@@ -2345,6 +2349,8 @@ bool X86TargetInfo::setFeatureEnabled(llvm::StringMap<bool> &Features,
       Features["f16c"] = false;
     else if (Name == "rtm")
       Features["rtm"] = false;
+    else if (Name == "prfchw")
+      Features["prfchw"] = false;
   }
 
   return true;
@@ -2401,6 +2407,11 @@ void X86TargetInfo::HandleTargetFeatures(std::vector<std::string> &Features) {
       continue;
     }
 
+    if (Feature == "prfchw") {
+      HasPRFCHW = true;
+      continue;
+    }
+
     if (Feature == "sse4a") {
       HasSSE4a = true;
       continue;
@@ -2625,6 +2636,9 @@ void X86TargetInfo::getTargetDefines(const LangOptions &Opts,
   if (HasRTM)
     Builder.defineMacro("__RTM__");
 
+  if (HasPRFCHW)
+    Builder.defineMacro("__PRFCHW__");
+
   if (HasSSE4a)
     Builder.defineMacro("__SSE4A__");
 
@@ -2713,6 +2727,7 @@ bool X86TargetInfo::hasFeature(StringRef Feature) const {
       .Case("pclmul", HasPCLMUL)
       .Case("popcnt", HasPOPCNT)
       .Case("rtm", HasRTM)
+      .Case("prfchw", HasPRFCHW)
       .Case("sse", SSELevel >= SSE1)
       .Case("sse2", SSELevel >= SSE2)
       .Case("sse3", SSELevel >= SSE3)