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Do not hoist volatile loads
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8399 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -316,7 +316,7 @@ bool LICM::SafeToHoist(Instruction &Inst) {
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void LICM::visitLoadInst(LoadInst &LI) {
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if (isLoopInvariant(LI.getOperand(0)) &&
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if (isLoopInvariant(LI.getOperand(0)) && !LI.isVolatile() &&
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!pointerInvalidatedByLoop(LI.getOperand(0)) && SafeToHoist(LI)) {
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hoist(LI);
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++NumHoistedLoads;
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