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, 0 insertions, 9 deletions

diff --git a/llvm/lib/CodeGen/RegAllocBase.cpp b/llvm/lib/CodeGen/RegAllocBase.cpp
index 1130d64689d..16ff48e78a7 100644
--- a/llvm/lib/CodeGen/RegAllocBase.cpp
+++ b/llvm/lib/CodeGen/RegAllocBase.cpp
@@ -153,12 +153,3 @@ void RegAllocBase::allocatePhysRegs() {
     }
   }
 }
-
-void RegAllocBase::postOptimization() {
-  spiller().postOptimization();
-  for (auto DeadInst : DeadRemats) {
-    LIS->RemoveMachineInstrFromMaps(*DeadInst);
-    DeadInst->eraseFromParent();
-  }
-  DeadRemats.clear();
-}