Sanjay Patel 26e742fd84 [x86][CGP] improve sinking of splatted vector shift amount operand ...

Expands on the enablement of the shouldSinkOperands() TLI hook in:
D79718

The last codegen/IR test diff shows what I suspected could happen - we were
sinking all splat shift operands into a loop. But that's not what we want in
general; we only want to sink the *shift amount* operand if it is a splat.

Differential Revision: https://reviews.llvm.org/D79827

2020-05-14 08:36:03 -04:00

288 KiB

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