llvm-project

675b01a4 - [BOLT][AArch64][instr] Remove instructions on saving and restoring NZCV (#156994)

[BOLT][AArch64][instr] Remove instructions on saving and restoring NZCV (#156994) Remove the `NZCV` save and restore instructions from instrumentation sequence because the instructions used for getting counter address, counter increment and stack push/pop won't impact `NZCV`. And with this, we can use `X1` to do counter increment and remove the two instructions that saves and later restores `X2`.