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authorAnna Thomas <anna@azul.com>2017-07-05 01:16:29 +0000
committerAnna Thomas <anna@azul.com>2017-07-05 01:16:29 +0000
commit740f529dba1ff5acc1265bb03bd85014566692e6 (patch)
treea38ad00a709a68aa07d36e5350d88bc0ed4c61f2 /lldb/packages/Python/lldbsuite/test/python_api/process/TestProcessAPI.py
parenta24aa1990084c15f0ad27dbcff7ab1c96369f0f9 (diff)
downloadbcm5719-llvm-740f529dba1ff5acc1265bb03bd85014566692e6.tar.gz
bcm5719-llvm-740f529dba1ff5acc1265bb03bd85014566692e6.zip
[SafepointIRVerifier] Add verifier pass for finding GC relocation bugs
Original Patch and summary by Philip Reames. RewriteStatepointsForGC tries to rewrite a function in a manner where the optimizer can't end up using a pointer value after it might have been relocated by a safepoint. This pass checks the invariant that RSForGC is supposed to establish and that (if we constructed semantics correctly) later passes must preserve. This has been a really useful diagnostic tool when initially developing the rewriting scheme and has found numerous bugs. Differential Revision: https://reviews.llvm.org/D15940 Reviewed by: swaroop.sridhar, mjacob Subscribers: llvm-commits llvm-svn: 307112
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