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RegAllocFast: Remove write-only set; NFC 

llvm-svn: 312844
This commit is contained in:
Matthias Braun 2017-09-09 00:52:42 +00:00
parent 8c0314c3ed
commit a5225e8cb0
1 changed files with 0 additions and 10 deletions
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10
llvm/lib/CodeGen/RegAllocFast.cpp
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@ -133,11 +133,6 @@ namespace {
return false;
}
// SkippedInstrs - Descriptors of instructions whose clobber list was
// ignored because all registers were spilled. It is still necessary to
// mark all the clobbered registers as used by the function.
SmallPtrSet<const MCInstrDesc*, 4> SkippedInstrs;
// isBulkSpilling - This flag is set when LiveRegMap will be cleared
// completely after spilling all live registers. LiveRegMap entries should
// not be erased.
@ -1025,10 +1020,6 @@ void RAFast::AllocateBasicBlock() {
// those for virtual registers in between.
DEBUG(dbgs() << " Spilling remaining registers before call.\n");
spillAll(MI);
// The imp-defs are skipped below, but we still need to mark those
// registers as used by the function.
SkippedInstrs.insert(&MCID);
}
// Third scan.
@ -1112,7 +1103,6 @@ bool RAFast::runOnMachineFunction(MachineFunction &Fn) {
// replaced. Remove the virtual registers.
MRI->clearVirtRegs();
SkippedInstrs.clear();
StackSlotForVirtReg.clear();
LiveDbgValueMap.clear();
return true;