Fangrui Song 2ef56d16ad [RISCV] relaxDwarfCallFrameFragment: remove unneeded relocations for relaxation ...

If `evaluateAsAbsolute(Value, Layout.getAssembler())` returns true, we
know the address delta is a constant and can suppress relocations
(usually SET6/SUB6).

While here, replace one evaluateKnownAbsolute call (subtle for Mach-O
workarounds; avoid if possible) with evaluateAsAbsolute.

2023-06-16 12:15:06 -07:00

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