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Turn loads of ConstantPointerNulls into loads of zero... don't spill
them into the constant pool. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14128 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -74,6 +74,12 @@ SparcV9InstrInfo::ConvertConstantToIntType(const TargetMachine &target,
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return (uint64_t) CB->getValue();
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}
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// ConstantPointerNull: it's really just a big, shiny version of zero.
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if (const ConstantPointerNull *CPN = dyn_cast<ConstantPointerNull>(V)) {
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isValidConstant = true;
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return 0;
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}
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// For other types of constants, some conversion may be needed.
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// First, extract the constant operand according to its own type
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if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(V))
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