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Make this a bit more explicit about which cases need the
check. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62474 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -969,14 +969,18 @@ static bool SpeculativelyExecuteBB(BranchInst *BI, BasicBlock *BB1) {
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default: return false; // Not safe / profitable to hoist.
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case Instruction::Add:
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case Instruction::Sub:
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// FP arithmetic might trap. Not worth doing for vector ops.
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if (I->getType()->isFloatingPoint() || isa<VectorType>(I->getType()))
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return false;
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break;
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case Instruction::And:
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case Instruction::Or:
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case Instruction::Xor:
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case Instruction::Shl:
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case Instruction::LShr:
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case Instruction::AShr:
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if (!I->getOperand(0)->getType()->isInteger())
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// FP arithmetic might trap. Not worth doing for vector ops.
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// Don't mess with vector operations.
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if (isa<VectorType>(I->getType()))
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return false;
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break; // These are all cheap and non-trapping instructions.
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}
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