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Makes life easier for downstream users with customized default standard.
llvm-svn: 372674
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Summary:
The llvm-cov tool needs to be able to find coverage names in the
executable, so the .lprfn and .lcovmap sections cannot be merged into
.rdata.
Also, the linker merges .lprfn$M into .lprfn, so llvm-cov needs to
handle that when looking up sections. It has to support running on both
relocatable object files and linked PE files.
Lastly, when loading .lprfn from a PE file, llvm-cov needs to skip the
leading zero byte added by the profile runtime.
Reviewers: vsk
Subscribers: hiraditya, #sanitizers, llvm-commits
Tags: #sanitizers, #llvm
Differential Revision: https://reviews.llvm.org/D58661
llvm-svn: 354840
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Summary:
Before this change, check-profile would run, but all tests would be
marked unsupported on Windows. This is the new status of 'check-profile'
after this change:
Testing Time: 6.66s
Expected Passes : 29
Expected Failures : 5
Unsupported Tests : 39
I moved many tests that exercise posix-y features like dlopen and DSOs
into the Posix subdirectory, and ran the tests on Linux to validate my
changes.
These are the remaining tests that I handled on a case by case basis:
- instrprof-path.c
Passes, Fixed some path portability issues
- instrprof-gcov-exceptions.test
Passes, the FileCheck actually succeeds on Windows, so I RUNX'd it
- instrprof-icall-promo.test
XFAILed, probably due to C++ ABI differences in vtables
- instrprof-merge-match.test
- instrprof-merge.c
- instrprof-merging.cpp
XFAILed, These seem like real bugs that need fixing
- instrprof-version-mismatch.c
XFAILed, Overriding the weak version symbol doesn't work
- instrprof-without-libc.c
UNSUPPORTED, test needs an executable symbol table, Windows has none
Reviewers: davidxl, wmi, void
Subscribers: fedor.sergeev, #sanitizers, llvm-commits
Tags: #sanitizers
Differential Revision: https://reviews.llvm.org/D57853
llvm-svn: 353435
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Frontends emit 'unused' coverage mapping records for functions which are
provably unused in a TU. These unused records contain a single counter
with CounterKind::Zero. However, a function may be unused in one TU and
used in another. When this happens, prefer the records with a full set
of counters instead of arbitrarily picking the first loaded record.
There is no impact on the single-TU case. In the multiple-TU case, this
resolves issues causing a function to appear unused when it's not.
Testing: check-{llvm,clang,compiler-rt}
rdar://42981322
llvm-svn: 339194
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