Nikita Popov 0529e2e018 [InstrInfo] Use 64-bit immediates for analyzeCompare() (NFCI) ...

The backend generally uses 64-bit immediates (e.g. what
MachineOperand::getImm() returns), so use that for analyzeCompare()
and optimizeCompareInst() as well. This avoids truncation for
targets that support immediates larger 32-bit. In particular, we
can avoid the bugprone value normalization hack in the AArch64
target.

This is a followup to D108076.

Differential Revision: https://reviews.llvm.org/D108875

2021-08-30 19:46:04 +02:00

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