64: Fix return address relocation in CheckStackGuardState

Port of PPC64 fix: https://github.com/andrewlow/v8ppc/commit/bf98316b114a1455e3dfbccc2ddd5413e9631211
Fix RegExpMacroAssemblerS390::CheckGreedyLoop -- branch condition should be depended on cmpRR instr, but cc is modified by AddP instr