Alexander Potapenko 0e3b85a730 [MSan] Don't emit __msan_instrument_asm_load() calls ...

LLVM treats void* pointers passed to assembly routines as pointers to
sized types.
We used to emit calls to __msan_instrument_asm_load() for every such
void*, which sometimes led to false positives.
A less error-prone (and truly "conservative") approach is to unpoison
only assembly output arguments.

llvm-svn: 349734

2018-12-20 10:05:00 +00:00

169 KiB

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