Add some more patchpoint-related llvm patches

llvm_patches/0009-Filter-out-extraneous-registers-from-live-outs-like-.patch

+From d29f41a06219e5e9176722a9960caee3399ab104 Mon Sep 17 00:00:00 2001
+From: Kevin Modzelewski <kevmod@gmail.com>
+Date: Mon, 13 Oct 2014 16:16:17 -0700
+Subject: [PATCH] Filter out extraneous registers from live outs, like eflags and rip
+
+---
+ lib/CodeGen/StackMaps.cpp |   22 +++++++++++++++-------
+ 1 files changed, 15 insertions(+), 7 deletions(-)
+
+diff --git a/lib/CodeGen/StackMaps.cpp b/lib/CodeGen/StackMaps.cpp
+index a32a7c1..e5f84a1 100644
+--- a/lib/CodeGen/StackMaps.cpp
++++ b/lib/CodeGen/StackMaps.cpp
+@@ -139,19 +139,19 @@ StackMaps::parseOperand(MachineInstr::const_mop_iterator MOI,
+ }
+ 
+ /// Go up the super-register chain until we hit a valid dwarf register number.
+-static unsigned getDwarfRegNum(unsigned Reg, const TargetRegisterInfo *TRI) {
++static int getDwarfRegNum(unsigned Reg, const TargetRegisterInfo *TRI) {
+   int RegNo = TRI->getDwarfRegNum(Reg, false);
+   for (MCSuperRegIterator SR(Reg, TRI); SR.isValid() && RegNo < 0; ++SR)
+     RegNo = TRI->getDwarfRegNum(*SR, false);
+ 
+-  assert(RegNo >= 0 && "Invalid Dwarf register number.");
+-  return (unsigned) RegNo;
++  return (int) RegNo;
+ }
+ 
+ /// Create a live-out register record for the given register Reg.
+ StackMaps::LiveOutReg
+ StackMaps::createLiveOutReg(unsigned Reg, const TargetRegisterInfo *TRI) const {
+-  unsigned RegNo = getDwarfRegNum(Reg, TRI);
++  int RegNo = getDwarfRegNum(Reg, TRI);
++  assert(RegNo >= 0 && "Invalid Dwarf register number.");
+   unsigned Size = TRI->getMinimalPhysRegClass(Reg)->getSize();
+   return LiveOutReg(Reg, RegNo, Size);
+ }
+@@ -165,9 +165,16 @@ StackMaps::parseRegisterLiveOutMask(const uint32_t *Mask) const {
+   LiveOutVec LiveOuts;
+ 
+   // Create a LiveOutReg for each bit that is set in the register mask.
+-  for (unsigned Reg = 0, NumRegs = TRI->getNumRegs(); Reg != NumRegs; ++Reg)
+-    if ((Mask[Reg / 32] >> Reg % 32) & 1)
++  for (unsigned Reg = 0, NumRegs = TRI->getNumRegs(); Reg != NumRegs; ++Reg) {
++    if ((Mask[Reg / 32] >> Reg % 32) & 1) {
++      int RegNo = getDwarfRegNum(Reg, TRI);
++      if (RegNo < 0)
++        continue;
++      if (!TRI->isInAllocatableClass(Reg))
++        continue;
+       LiveOuts.push_back(createLiveOutReg(Reg, TRI));
++    }
++  }
+ 
+   // We don't need to keep track of a register if its super-register is already
+   // in the list. Merge entries that refer to the same dwarf register and use
+@@ -400,10 +407,11 @@ void StackMaps::emitCallsiteEntries(MCStreamer &OS,
+ 
+     unsigned OperIdx = 0;
+     for (const auto &Loc : CSLocs) {
+-      unsigned RegNo = 0;
++      int RegNo = 0;
+       int Offset = Loc.Offset;
+       if(Loc.Reg) {
+         RegNo = getDwarfRegNum(Loc.Reg, TRI);
++        assert(RegNo >= 0 && "Invalid Dwarf register number.");
+ 
+         // If this is a register location, put the subregister byte offset in
+         // the location offset.
+-- 
+1.7.4.1
+