llvm-project

56cdd60a - [MC] Merge fixupNeedsRelaxation and fixupNeedsRelaxationAdvanced. NFC (#184832)

[MC] Merge fixupNeedsRelaxation and fixupNeedsRelaxationAdvanced. NFC (#184832) The two-tier relaxation hook design (fixupNeedsRelaxationAdvanced delegating to fixupNeedsRelaxation) is confusing and unnecessary. Only M68k and AMDGPU used fixupNeedsRelaxation (via the default fixupNeedsRelaxationAdvanced). AArch64 and CSKY had dead overrides: they don't override mayNeedRelaxation to ever return true. Merge the two hooks: convert M68k and AMDGPU to override fixupNeedsRelaxationAdvanced directly, remove dead overrides from AArch64 and CSKY, and simplify the default implementation to `return !Resolved`.