[llvm] [GlobalISel] Add GIM_CheckMachineOperandType for matching metadata operands (PR #191389)

[Sameer Sahasrabuddhe via llvm-commits]

https://github.com/ssahasra created https://github.com/llvm/llvm-project/pull/191389

Add a new match table opcode GIM_CheckMachineOperandType and a corresponding MachineOperandTypeMatcher class to support matching operands by their MachineOperand type. This enables GlobalISel pattern matching for intrinsics that have metadata operands (MVT::Metadata), which previously could not be matched in the generated selector.

This is patch was extracted from #172090.

Co-authored-by: macurtis-amd <macurtis at amd.com>
Assisted-by: Claude Opus 4.6

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