Vendor import of llvm r114020 (from the release_28 branch):vendor/llvm/llvm-r114020

http://llvm.org/svn/llvm-project/llvm/branches/release_28@114020

Approved by:	rpaulo (mentor)

1 files changed, 7 insertions, 13 deletions

diff --git a/lib/CodeGen/OptimizePHIs.cpp b/lib/CodeGen/OptimizePHIs.cpp
index 1613fe21e42d..edb4eea71b8a 100644
--- a/lib/CodeGen/OptimizePHIs.cpp
+++ b/lib/CodeGen/OptimizePHIs.cpp
@@ -33,7 +33,7 @@ namespace {
 
   public:
     static char ID; // Pass identification
-    OptimizePHIs() : MachineFunctionPass(&ID) {}
+    OptimizePHIs() : MachineFunctionPass(ID) {}
 
     virtual bool runOnMachineFunction(MachineFunction &MF);
 
@@ -54,8 +54,8 @@ namespace {
 }
 
 char OptimizePHIs::ID = 0;
-static RegisterPass<OptimizePHIs>
-X("opt-phis", "Optimize machine instruction PHIs");
+INITIALIZE_PASS(OptimizePHIs, "opt-phis",
+                "Optimize machine instruction PHIs", false, false);
 
 FunctionPass *llvm::createOptimizePHIsPass() { return new OptimizePHIs(); }
 
@@ -101,16 +101,10 @@ bool OptimizePHIs::IsSingleValuePHICycle(MachineInstr *MI,
     MachineInstr *SrcMI = MRI->getVRegDef(SrcReg);
 
     // Skip over register-to-register moves.
-    unsigned MvSrcReg, MvDstReg, SrcSubIdx, DstSubIdx;
-    if (SrcMI &&
-        TII->isMoveInstr(*SrcMI, MvSrcReg, MvDstReg, SrcSubIdx, DstSubIdx) &&
-        SrcSubIdx == 0 && DstSubIdx == 0 &&
-        TargetRegisterInfo::isVirtualRegister(MvSrcReg))
-      SrcMI = MRI->getVRegDef(MvSrcReg);
-    else if (SrcMI && SrcMI->isCopy() &&
-             !SrcMI->getOperand(0).getSubReg() &&
-             !SrcMI->getOperand(1).getSubReg() &&
-           TargetRegisterInfo::isVirtualRegister(SrcMI->getOperand(1).getReg()))
+    if (SrcMI && SrcMI->isCopy() &&
+        !SrcMI->getOperand(0).getSubReg() &&
+        !SrcMI->getOperand(1).getSubReg() &&
+        TargetRegisterInfo::isVirtualRegister(SrcMI->getOperand(1).getReg()))
       SrcMI = MRI->getVRegDef(SrcMI->getOperand(1).getReg());
     if (!SrcMI)
       return false;