llvm-project

0da9aacf - [InstCombine] Extend bitmask mul combine to handle independent operands (#142503)

[InstCombine] Extend bitmask mul combine to handle independent operands (#142503) This extends https://github.com/llvm/llvm-project/pull/136013 to capture cases where the combineable bitmask muls are nested under multiple or-disjoints. This PR is meant for commits starting at 8c403c912046505ffc10378560c2fc48f214af6a op1 = or-disjoint mul(and (X, C1), D) , reg1 op2 = or-disjoint mul(and (X, C2), D) , reg2 out = or-disjoint op1, op2 -> temp1 = or-disjoint reg1, reg2 out = or-disjoint mul(and (X, (C1 + C2)), D), temp1 Case1: https://alive2.llvm.org/ce/z/dHApyV Case2: https://alive2.llvm.org/ce/z/Jz-Nag Case3: https://alive2.llvm.org/ce/z/3xBnEV