X86: Make specifying avx2 simpler on Darwin with '-arch'
Teach the '-arch' command line option to enable the compiler-friendly
features of core-avx2 CPUs on Darwin. Pass the information along in the
target triple like Darwin+ARM does.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@194907 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Driver/ToolChain.cpp b/lib/Driver/ToolChain.cpp
index 9fe0379..faa06b6 100644
--- a/lib/Driver/ToolChain.cpp
+++ b/lib/Driver/ToolChain.cpp
@@ -252,12 +252,26 @@
.Default("");
}
-std::string ToolChain::ComputeLLVMTriple(const ArgList &Args,
+std::string ToolChain::ComputeLLVMTriple(const ArgList &Args,
types::ID InputType) const {
switch (getTriple().getArch()) {
default:
return getTripleString();
+ case llvm::Triple::x86_64: {
+ llvm::Triple Triple = getTriple();
+ if (!Triple.isOSDarwin())
+ return getTripleString();
+
+ if (Arg *A = Args.getLastArg(options::OPT_march_EQ)) {
+ // x86_64h goes in the triple. Other -march options just use the
+ // vanilla triple we already have.
+ StringRef MArch = A->getValue();
+ if (MArch == "x86_64h")
+ Triple.setArchName(MArch);
+ }
+ return Triple.getTriple();
+ }
case llvm::Triple::arm:
case llvm::Triple::thumb: {
// FIXME: Factor into subclasses.