As detailed in Issue #57624, the introduction of
`__builtin_extract_return_address` to `GET_CALLER_PC` in
4248f32b9ebe87c7af8ee53911efd47c2652f488
<https://reviews.llvm.org/rG4248f32b9ebe87c7af8ee53911efd47c2652f488> broke
`TestCases/Misc/missing_return.cpp` on Solaris/SPARC. Unlike most other
targets, the builtin isn't a no-op on SPARC and thus has always been
necessary. Its lack had previously been worked around by calls to
`GetNextInstructionPc` in `sanitizer_stacktrace_sparc.cpp`
(`BufferedStackTrace::UnwindFast`) and `sanitizer_unwind_linux_libcdep.cpp`
(`BufferedStackTrace::UnwindSlow`). However, those calls are superfluous
now and actually harmful.
This patch removes those hacks, fixing the failure.
Tested on `sparcv9-sun-solaris2.11` and on `sparc-sun-solaris2.11` in the
GCC tree. On the latter, several more testcase failures had been caused by
this issue since ASan actually works with `gcc` on SPARC, unlike `clang`.
Differential Revision: https://reviews.llvm.org/D156504
See https://reviews.llvm.org/D58620 for discussion, and for the commands
I ran. In addition I also ran
for f in $(svn diff | diffstat | grep .cc | cut -f 2 -d ' '); do rg $f . ; done
and manually updated (many) references to renamed files found by that.
llvm-svn: 367463
