3 Commits

Author	SHA1	Message	Date
Fangrui Song	7620f03ef7	[MC] Parse SHF_LINK_ORDER argument before section group name (#77407) ... When both SHF_LINK_ORDER | SHF_GROUP flags are set, GNU assembler from 2.35 onwards (https://sourceware.org/PR25381 https://sourceware.org/binutils/docs/as/Section.html) parses the SHF_LINK_ORDER argument before section group name, different from us. This is unfortunate, but does not matter because the `.section` flag `o` is a niche feature only used by compiler instrumentations, not adopted by hand-written assembly, and using both flags is extremely rare. Let's just match GNU assembler. There is another benefit: we now support zero-flag section group with the SHF_LINK_ORDER flag, while previously there isn't a syntax. While here, print 'G' after 'o' to be clear that the 'G' argument is parsed after the 'o' argument. To make the diff smaller, we don't print 'G' after 'w' in the absence of 'o' for now.	2024-01-09 10:42:34 -08:00
Fangrui Song	d14460d00e	[AsmPrinter] Fix placement of function entry comments ... The placement is currently wrong in the presence of function entry related instrumentations (prefixdata, -fpatchable-function-entry=, -fsanitize=kcfi, etc).	2023-04-18 15:01:36 -07:00
WANG Xuerui	db5dfec9d4	[Clang][LoongArch] Implement patchable function entry ... Similar to D98610 for RISCV. This is going to be required by the upcoming Linux/LoongArch [[ https://git.kernel.org/linus/4733f09d88074 | support for dynamic ftrace ]]. Reviewed By: SixWeining, MaskRay Differential Revision: https://reviews.llvm.org/D141785	2023-03-16 09:33:58 +08:00