Messages in this thread | | | Date | Thu, 16 Nov 2017 08:43:06 -0800 | From | Sami Tolvanen <> | Subject | Re: [PATCH v2 11/18] arm64: make mrs_s and msr_s macros work with LTO |
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On Thu, Nov 16, 2017 at 11:54:33AM +0000, Will Deacon wrote: > What limitations? Can you elaborate please? Is this a fix?
The commit message in v1 was more informative, I'll change this back for v3:
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Clang's integrated assembler does not allow assembly macros defined in one inline asm block using the .macro directive to be used across separate asm blocks. LLVM developers consider this a feature and not a bug, recommending code refactoring:
https://bugs.llvm.org/show_bug.cgi?id=19749
As binutils doesn't allow macros to be redefined, this change adds C preprocessor macros that define the assembly macros globally for binutils and locally for clang's integrated assembler.
Sami
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