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067e0b2781
Pretty sure we meant to be checking signed 32 immediates here rather than unsigned 32 bit. I suspect I messed this up because in MathExtras.h we have isIntN and isUIntN so isIntN differs in signedness depending on whether you're using APInt or plain integers. This fixes a case where we didn't fold a constant created by shrinkAndImmediate. Since shrinkAndImmediate doesn't topologically sort constants it creates, we can fail to convert the Constant to a TargetConstant. This leads to very strange behavior later. Fixes PR48458. |
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