jonpa added a comment.
The problem seems to be with a tied earlyclobber operand:
asm("" : "+&r"(a));
Per the comment in InlineAsm::ConstraintInfo::Parse(), only output can be
earlyclobber.
I am not sure if the earlyclobber ('&') should with this patch be removed from
the added use of the register, or if this has to for some reason really be tied
to the def?
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D87279/new/
https://reviews.llvm.org/D87279
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