| Issue |
161006
|
| Summary |
[X86] LowerShiftByScalarImmediate - move shl(x,1) -> add(freeze(x),freeze(x)) to X86FixupInstTunings
|
| Labels |
backend:X86
|
| Assignees |
RKSimon
|
| Reporter |
RKSimon
|
Avoid the shl(x,1) -> add(freeze(x),freeze(x)) if the shift-imm if legal, and leave it to X86FixupInstTunings.
Helps avoid missed optimisations due to oneuse limits, avoids unnecessary freezes and allows AVX512 to fold to mi memory folding variants
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