[gcc r15-6602] Respect -fprofile-prefix-map for getcwd in .gcno files

https://gcc.gnu.org/g:fa778ba7d04497bdf32751488c8efd82db3b5e65 commit r15-6602-gfa778ba7d04497bdf32751488c8efd82db3b5e65 Author: Fangrui Song Date: Tue Dec 31 16:32:07 2024 -0800 Respect -fprofile-prefix-map for getcwd in .gcno files so that `gcc -c a.cc --coverage -fprofile-p

[gcc r15-4707] arm: Support -mfdpic for more targets

https://gcc.gnu.org/g:8e6cc1e7cdbb431a0950e491ed2830213f3ad81b commit r15-4707-g8e6cc1e7cdbb431a0950e491ed2830213f3ad81b Author: Fangrui Song Date: Sun Oct 27 12:37:21 2024 -0700 arm: Support -mfdpic for more targets Targets that are not arm*-*-uclinuxfdpiceabi can use -S -mfdpic,

[gcc r15-10] RISC-V: Add -X to link spec

https://gcc.gnu.org/g:50c218e3ffe57860591a987ecf44fcc0abb31f2c commit r15-10-g50c218e3ffe57860591a987ecf44fcc0abb31f2c Author: Fangrui Song Date: Fri Apr 26 18:14:33 2024 -0700 RISC-V: Add -X to link spec --discard-locals (-X) instructs the linker to remove local .L* symbols,