Discussed here:
http://lists.llvm.org/pipermail/llvm-dev/2018-January/120320.html
In preparation for adding support for named vregs we are changing the sigil for
physical registers in MIR to '$' from '%'. This will prevent name clashes of
named physical register with named vregs.
llvm-svn: 323922
The original version of the code in XRayInstrumentation.cpp assumed that
functions may not have empty machine basic blocks (or that the first one
couldn't be). This change addresses that by special-casing that specific
situation.
We provide two .mir test-cases to make sure we're handling this
appropriately.
Fixes llvm.org/PR31424.
Reviewers: chandlerc
Subscribers: varno, llvm-commits
Differential Revision: https://reviews.llvm.org/D27913
llvm-svn: 290091
Puyan Lotfi