Revert r265547 "Recommit r265309 after fixed an invalid memory reference bug happened"

It caused PR27275: "ARM: Bad machine code: Using an undefined physical register"

Also reverting the following commits that were landed on top:
r265610 "Fix the compare-clang diff error introduced by r265547."
r265639 "Fix the sanitizer bootstrap error in r265547."
r265657 "InlineSpiller.cpp: Escap \@ in r265547. [-Wdocumentation]"

llvm-svn: 265790

1 files changed, 2 insertions, 3 deletions

diff --git a/llvm/lib/CodeGen/RegAllocBasic.cpp b/llvm/lib/CodeGen/RegAllocBasic.cpp
index 11dfda67377..cfe367d5115 100644
--- a/llvm/lib/CodeGen/RegAllocBasic.cpp
+++ b/llvm/lib/CodeGen/RegAllocBasic.cpp
@@ -199,7 +199,7 @@ bool RABasic::spillInterferences(LiveInterval &VirtReg, unsigned PhysReg,
     Matrix->unassign(Spill);
 
     // Spill the extracted interval.
-    LiveRangeEdit LRE(&Spill, SplitVRegs, *MF, *LIS, VRM, nullptr, &DeadRemats);
+    LiveRangeEdit LRE(&Spill, SplitVRegs, *MF, *LIS, VRM);
     spiller().spill(LRE);
   }
   return true;
@@ -258,7 +258,7 @@ unsigned RABasic::selectOrSplit(LiveInterval &VirtReg,
   DEBUG(dbgs() << "spilling: " << VirtReg << '\n');
   if (!VirtReg.isSpillable())
     return ~0u;
-  LiveRangeEdit LRE(&VirtReg, SplitVRegs, *MF, *LIS, VRM, nullptr, &DeadRemats);
+  LiveRangeEdit LRE(&VirtReg, SplitVRegs, *MF, *LIS, VRM);
   spiller().spill(LRE);
 
   // The live virtual register requesting allocation was spilled, so tell
@@ -283,7 +283,6 @@ bool RABasic::runOnMachineFunction(MachineFunction &mf) {
   SpillerInstance.reset(createInlineSpiller(*this, *MF, *VRM));
 
   allocatePhysRegs();
-  postOptimization();
 
   // Diagnostic output before rewriting
   DEBUG(dbgs() << "Post alloc VirtRegMap:\n" << *VRM << "\n");