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Add TargetInstrInfo interface isAsCheapAsAMove.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@214158 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jiangning Liu
2014-07-29 01:55:19 +00:00
parent 994af148ca
commit f3224d0617
8 changed files with 23 additions and 9 deletions
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2
lib/CodeGen/MachineCSE.cpp
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@ -380,7 +380,7 @@ bool MachineCSE::isProfitableToCSE(unsigned CSReg, unsigned Reg,
// Heuristics #1: Don't CSE "cheap" computation if the def is not local or in
// an immediate predecessor. We don't want to increase register pressure and
// end up causing other computation to be spilled.
if (MI->isAsCheapAsAMove()) {
if (TII->isAsCheapAsAMove(MI)) {
MachineBasicBlock *CSBB = CSMI->getParent();
MachineBasicBlock *BB = MI->getParent();
if (CSBB != BB && !CSBB->isSuccessor(BB))