================
@@ -925,9 +925,16 @@ class TargetRegisterInfo : public MCRegisterInfo {
virtual const char *getRegPressureSetName(unsigned Idx) const = 0;
/// Get the register unit pressure limit for this dimension.
- /// This limit must be adjusted dynamically for reserved registers.
+ /// TargetRegisterInfo adjusts this limit for reserved registers.
+ /// Avoid using this method directly as it is costly to compute. Use the
+ /// cached version `RegisterClassInfo::getRegPressureSetLimit` instead.
virtual unsigned getRegPressureSetLimit(const MachineFunction &MF,
----------------
wangpc-pp wrote:
If moving to `MachineRegisterInfo`, then AMDGPU target will not be able to
override it and that will cause regressions.
https://github.com/llvm/llvm-project/pull/118787
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