llvm-project

f0b3b6d1 - [DAG] isConstantIntBuildVectorOrConstantInt - peek through bitcasts (#112710) (REAPPLIED)

[DAG] isConstantIntBuildVectorOrConstantInt - peek through bitcasts (#112710) (REAPPLIED) Alter both isConstantIntBuildVectorOrConstantInt + isConstantFPBuildVectorOrConstantFP to return a bool instead of the underlying SDNode, and adjust usage to account for this. Update isConstantIntBuildVectorOrConstantInt to peek though bitcasts when attempting to find a constant, in particular this improves canonicalization of constants to the RHS on commutable instructions. X86 is the beneficiary here as it often bitcasts rematerializable 0/-1 vector constants as vXi32 and bitcasts to the requested type Minor cleanup that helps with #107423 Reapplied after regression fix ba1255def64a9c3c68d97ace051eec76f546eeb0