================
@@ -1762,6 +1765,37 @@ bool SPIRVInstructionSelector::selectSign(Register
ResVReg,
return Result;
}
+bool SPIRVInstructionSelector::selectWaveActiveCountBits(
+ Register ResVReg, const SPIRVType *ResType, MachineInstr &I) const {
+ assert(I.getNumOperands() == 3);
+ assert(I.getOperand(2).isReg());
+ MachineBasicBlock &BB = *I.getParent();
+
+ Register BallotReg = MRI->createVirtualRegister(&SPIRV::IDRegClass);
----------------
spall wrote:
Is SPIRV::IDRegClass just a register class for all types? Because there are
others like SPIRV::vIDRegClass, which is for vectors.
https://github.com/llvm/llvm-project/pull/113382
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