2 Commits

Author	SHA1	Message	Date
Alan Zhao	8a1b5f2680	[llvm-ml] Add support for extern proc ... EXTERN PROC isn't really well documented in MSVC, so after poking around it seems as if it's just a regular extern symbol. Interestingly enough, under MSVC the following is allowed: extern foo:proc mov eax, foo MSVC will output: mov eax, 0 while llvm-ml will currently output: mov eax, dword ptr [foo] (since foo is an extern) Arguably, llvm-ml's output makes more sense, even though it's inconsistent with MSVC ml. However, since moving an extern proc symbol to a register doesn't really make sense in the first place, we'll treat it as undefined behavior for now. Reviewed By: epastor Differential Revision: https://reviews.llvm.org/D125582	2022-05-13 17:20:55 -04:00
Alan Zhao	82c5e302f9	[llvm-ml] Implement support for MASM's extern directive ... The EXTERN keyword defines external symbols in MASM. Credit goes to epastor@ for implementing most of the logic; I (ayzhao@) added some bugfixes and tests. [0]: https://docs.microsoft.com/en-us/cpp/assembler/masm/extern-masm?view=msvc-170 Reviewed By: epastor Submitted By: epastor Differential Revision: https://reviews.llvm.org/D125273	2022-05-10 14:36:06 -04:00