More x86 target feature support.
- Apologies for the extremely gross code duplication, I want to get
this working and then decide how to get this information out of the
back end.
- This replaces -m[no-]sse4[12] by -m[no-]sse4, it appears gcc
doesn't distinguish them?
- -msse, etc. now properly disable/enable related features.
- Don't always define __SSE3__...
- The main missing functionality bit here is that we don't initialize
the features based on the CPU for all -march options.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71117 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Basic/Targets.cpp b/lib/Basic/Targets.cpp
index d9ae003..4e9c3a5 100644
--- a/lib/Basic/Targets.cpp
+++ b/lib/Basic/Targets.cpp
@@ -532,14 +532,16 @@
}
virtual void getTargetDefines(const LangOptions &Opts,
std::vector<char> &Defines) const;
-
+ virtual bool setFeatureEnabled(llvm::StringMap<bool> &Features,
+ const std::string &Name,
+ bool Enabled) const;
virtual void getDefaultFeatures(const std::string &CPU,
- llvm::StringMap<bool> &Features);
+ llvm::StringMap<bool> &Features) const;
virtual void HandleTargetFeatures(const llvm::StringMap<bool> &Features);
};
void X86TargetInfo::getDefaultFeatures(const std::string &CPU,
- llvm::StringMap<bool> &Features) {
+ llvm::StringMap<bool> &Features) const {
// FIXME: This should not be here.
Features["3dnow"] = false;
Features["3dnowa"] = false;
@@ -572,6 +574,59 @@
Features["sse2"] = Features["sse"] = Features["mmx"] = true;
}
+bool X86TargetInfo::setFeatureEnabled(llvm::StringMap<bool> &Features,
+ const std::string &Name,
+ bool Enabled) const {
+ // FIXME: This *really* should not be here.
+ if (!Features.count(Name) && Name != "sse4")
+ return false;
+
+ if (Enabled) {
+ if (Name == "mmx")
+ Features["mmx"] = true;
+ else if (Name == "sse")
+ Features["mmx"] = Features["sse"] = true;
+ else if (Name == "sse2")
+ Features["mmx"] = Features["sse"] = Features["sse2"] = true;
+ else if (Name == "sse3")
+ Features["mmx"] = Features["sse"] = Features["sse2"] =
+ Features["sse3"] = true;
+ else if (Name == "ssse3")
+ Features["mmx"] = Features["sse"] = Features["sse2"] = Features["sse3"] =
+ Features["ssse3"] = true;
+ else if (Name == "sse4")
+ Features["mmx"] = Features["sse"] = Features["sse2"] = Features["sse3"] =
+ Features["ssse3"] = Features["sse41"] = Features["sse42"] = true;
+ else if (Name == "3dnow")
+ Features["3dnowa"] = true;
+ else if (Name == "3dnowa")
+ Features["3dnow"] = Features["3dnowa"] = true;
+ } else {
+ if (Name == "mmx")
+ Features["mmx"] = Features["sse"] = Features["sse2"] = Features["sse3"] =
+ Features["ssse3"] = Features["sse41"] = Features["sse42"] = false;
+ else if (Name == "sse")
+ Features["sse"] = Features["sse2"] = Features["sse3"] =
+ Features["ssse3"] = Features["sse41"] = Features["sse42"] = false;
+ else if (Name == "sse2")
+ Features["sse2"] = Features["sse3"] = Features["ssse3"] =
+ Features["sse41"] = Features["sse42"] = false;
+ else if (Name == "sse3")
+ Features["sse3"] = Features["ssse3"] = Features["sse41"] =
+ Features["sse42"] = false;
+ else if (Name == "ssse3")
+ Features["ssse3"] = Features["sse41"] = Features["sse42"] = false;
+ else if (Name == "sse4")
+ Features["sse41"] = Features["sse42"] = false;
+ else if (Name == "3dnow")
+ Features["3dnow"] = Features["3dnowa"] = false;
+ else if (Name == "3dnowa")
+ Features["3dnowa"] = false;
+ }
+
+ return true;
+}
+
/// HandleTargetOptions - Perform initialization based on the user
/// configured set of features.
void X86TargetInfo::HandleTargetFeatures(const llvm::StringMap<bool>&Features) {
@@ -603,7 +658,6 @@
Define(Defs, "__amd64");
Define(Defs, "__x86_64");
Define(Defs, "__x86_64__");
- Define(Defs, "__SSE3__");
} else {
DefineStd(Defs, "i386", Opts);
}