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

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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]"

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@265790 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Hans Wennborg
2016-04-08 15:17:43 +00:00
parent 1f3dc22cbb
commit d8b70fb72f
16 changed files with 1059 additions and 962 deletions
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lib/CodeGen/RegAllocBasic.cpp
+2 -3
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@@ -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");