llvm-project

97f6076d - [VectorCombine][X86] Use updated getVectorInstrCost hook (#137823)

[VectorCombine][X86] Use updated getVectorInstrCost hook (#137823) This addresses a TODO where previously scalarizeBinopOrCmp conservatively bailed if one of the operands was a load. getVectorInstrCost was updated to take in values in https://reviews.llvm.org/D140498 so we can pass in the scalar value to be inserted, which should return an accurate cost for a gather. To prevent regressions on x86 this tries to constant fold NewVecC up front so we can pass it into TTI and get a more accurate cost. We want to remove this restriction on RISC-V since this is always profitable whether or not the scalar is a load.