Update llvm/clang to trunk r126547.

There are several bugfixes in this update, but the most important one is
to ensure __start_ and __stop_ symbols for linker sets and kernel module
metadata are always emitted in object files:

  http://llvm.org/bugs/show_bug.cgi?id=9292

Before this fix, if you compiled kernel modules with clang, they would
not be properly processed by kldxref, and if they had any dependencies,
the kernel would fail to load those.  Another problem occurred when
attempting to mount a tmpfs filesystem, which would result in 'operation
not supported by device'.

2 files changed, 3 insertions, 5 deletions

diff --git a/contrib/llvm/lib/Target/MSP430/MSP430ISelLowering.cpp b/contrib/llvm/lib/Target/MSP430/MSP430ISelLowering.cpp
index 30ef4f5..a95d59c 100644
--- a/contrib/llvm/lib/Target/MSP430/MSP430ISelLowering.cpp
+++ b/contrib/llvm/lib/Target/MSP430/MSP430ISelLowering.cpp
@@ -77,10 +77,6 @@ MSP430TargetLowering::MSP430TargetLowering(MSP430TargetMachine &tm) :
   // Division is expensive
   setIntDivIsCheap(false);
 
-  // Even if we have only 1 bit shift here, we can perform
-  // shifts of the whole bitwidth 1 bit per step.
-  setShiftAmountType(MVT::i8);
-
   setStackPointerRegisterToSaveRestore(MSP430::SPW);
   setBooleanContents(ZeroOrOneBooleanContent);
   setSchedulingPreference(Sched::Latency);
@@ -330,7 +326,7 @@ MSP430TargetLowering::LowerCCCArguments(SDValue Chain,
       // Arguments passed in registers
       EVT RegVT = VA.getLocVT();
       switch (RegVT.getSimpleVT().SimpleTy) {
-      default: 
+      default:
         {
 #ifndef NDEBUG
           errs() << "LowerFormalArguments Unhandled argument type: "
diff --git a/contrib/llvm/lib/Target/MSP430/MSP430ISelLowering.h b/contrib/llvm/lib/Target/MSP430/MSP430ISelLowering.h
index 673c543..19c9eac 100644
--- a/contrib/llvm/lib/Target/MSP430/MSP430ISelLowering.h
+++ b/contrib/llvm/lib/Target/MSP430/MSP430ISelLowering.h
@@ -73,6 +73,8 @@ namespace llvm {
   public:
     explicit MSP430TargetLowering(MSP430TargetMachine &TM);
 
+    virtual MVT getShiftAmountTy(EVT LHSTy) const { return MVT::i8; }
+
     /// LowerOperation - Provide custom lowering hooks for some operations.
     virtual SDValue LowerOperation(SDValue Op, SelectionDAG &DAG) const;