From 59eb767e11d4ffefb5f55409524e5c8416b2b0db Mon Sep 17 00:00:00 2001 From: Bill Schmidt Date: Fri, 10 Oct 2014 15:09:43 +0000 Subject: [PowerPC] Add feature for Power8 vector extensions The current VSX feature for PowerPC specifies availability of the VSX instructions added with the 2.06 architecture version. With 2.07, the architecture adds new instructions to both the Category:Vector and Category:VSX instruction sets. Additionally, unaligned vector storage operations have improved performance. This patch adds a feature to provide access to the new instructions and performance capabilities of Power8. For compatibility with GCC, the feature is controlled via a new -mpower8-vector switch, and the feature causes the __POWER8_VECTOR__ builtin define to be generated by the preprocessor. There is a companion patch for llvm being committed at the same time. llvm-svn: 219502 --- clang/lib/Basic/Targets.cpp | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'clang/lib/Basic/Targets.cpp') diff --git a/clang/lib/Basic/Targets.cpp b/clang/lib/Basic/Targets.cpp index 0df01df77fb..902f1c3c610 100644 --- a/clang/lib/Basic/Targets.cpp +++ b/clang/lib/Basic/Targets.cpp @@ -672,13 +672,14 @@ class PPCTargetInfo : public TargetInfo { // Target cpu features. bool HasVSX; + bool HasPower8Vector; protected: std::string ABI; public: PPCTargetInfo(const llvm::Triple &Triple) - : TargetInfo(Triple), HasVSX(false) { + : TargetInfo(Triple), HasVSX(false), HasPower8Vector(false) { BigEndian = (Triple.getArch() != llvm::Triple::ppc64le); LongDoubleWidth = LongDoubleAlign = 128; LongDoubleFormat = &llvm::APFloat::PPCDoubleDouble; @@ -934,6 +935,11 @@ bool PPCTargetInfo::handleTargetFeatures(std::vector &Features, continue; } + if (Feature == "power8-vector") { + HasPower8Vector = true; + continue; + } + // TODO: Finish this list and add an assert that we've handled them // all. } @@ -1084,6 +1090,8 @@ void PPCTargetInfo::getTargetDefines(const LangOptions &Opts, if (HasVSX) Builder.defineMacro("__VSX__"); + if (HasPower8Vector) + Builder.defineMacro("__POWER8_VECTOR__"); // FIXME: The following are not yet generated here by Clang, but are // generated by GCC: -- cgit v1.2.3