Replace Triple with a new TargetTuple in MCTargetDesc/* and related. NFC.

Summary:
This is the first patch in the series to migrate Triple's (which are ambiguous)
to TargetTuple's (which aren't).

For the moment, TargetTuple simply passes all requests to the Triple object it
holds. Once it has replaced Triple, it will start to implement the interface in
a more suitable way.

This change makes some changes to the public C++ API. In particular,
InitMCSubtargetInfo(), createMCRelocationInfo(), and createMCSymbolizer()
now take TargetTuples instead of Triples. The other public C++ API's have
been left as-is for the moment to reduce patch size.

This commit also contains a trivial patch to clang to account for the C++ API
change.

Reviewers: rengolin

Subscribers: jyknight, dschuff, arsenm, rampitec, danalbert, srhines, javed.absar, dsanders, echristo, emaste, jholewinski, tberghammer, ted, jfb, llvm-commits, rengolin

Differential Revision: http://reviews.llvm.org/D10969

llvm-svn: 247683

1 files changed, 3 insertions, 2 deletions

diff --git a/llvm/lib/Target/ARM/ARMSubtarget.cpp b/llvm/lib/Target/ARM/ARMSubtarget.cpp
index 50e9e6a7397..0f2069474be 100644
--- a/llvm/lib/Target/ARM/ARMSubtarget.cpp
+++ b/llvm/lib/Target/ARM/ARMSubtarget.cpp
@@ -81,7 +81,7 @@ ARMFrameLowering *ARMSubtarget::initializeFrameLowering(StringRef CPU,
 ARMSubtarget::ARMSubtarget(const Triple &TT, const std::string &CPU,
                            const std::string &FS,
                            const ARMBaseTargetMachine &TM, bool IsLittle)
-    : ARMGenSubtargetInfo(TT, CPU, FS), ARMProcFamily(Others),
+    : ARMGenSubtargetInfo(TargetTuple(TT), CPU, FS), ARMProcFamily(Others),
       ARMProcClass(None), stackAlignment(4), CPUString(CPU), IsLittle(IsLittle),
       TargetTriple(TT), Options(TM.Options), TM(TM),
       FrameLowering(initializeFrameLowering(CPU, FS)),
@@ -159,7 +159,8 @@ void ARMSubtarget::initSubtargetFeatures(StringRef CPU, StringRef FS) {
   // Insert the architecture feature derived from the target triple into the
   // feature string. This is important for setting features that are implied
   // based on the architecture version.
-  std::string ArchFS = ARM_MC::ParseARMTriple(TargetTriple, CPUString);
+  std::string ArchFS =
+      ARM_MC::ParseARMTargetTuple(TargetTuple(TargetTriple), CPUString);
   if (!FS.empty()) {
     if (!ArchFS.empty())
       ArchFS = (Twine(ArchFS) + "," + FS).str();