diff options
| author | Davide Italiano <davide@freebsd.org> | 2017-11-07 00:09:25 +0000 |
|---|---|---|
| committer | Davide Italiano <davide@freebsd.org> | 2017-11-07 00:09:25 +0000 |
| commit | 964a48a5b6b8f8b3ca36dc4f769ba64d0a56aa57 (patch) | |
| tree | f96450ec91bb6bc3409d2956272274d7506f7b44 /lib/Transforms/IPO | |
| parent | db6cc311a07af889030d847ff2b4f1dc00db4ec6 (diff) | |
[IPO/LowerTypesTest] Skip blockaddress(es) when replacing uses.
Blockaddresses refer to the function itself, therefore replacing them
would cause an assertion in doRAUW.
Fixes https://bugs.llvm.org/show_bug.cgi?id=35201
This was found when trying CFI on a proprietary kernel by Dmitry Mikulin.
Differential Revision: https://reviews.llvm.org/D39695
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@317527 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms/IPO')
| -rw-r--r-- | lib/Transforms/IPO/LowerTypeTests.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/Transforms/IPO/LowerTypeTests.cpp b/lib/Transforms/IPO/LowerTypeTests.cpp index 9fa5ed9ab2b..6cef866b7b8 100644 --- a/lib/Transforms/IPO/LowerTypeTests.cpp +++ b/lib/Transforms/IPO/LowerTypeTests.cpp @@ -1401,7 +1401,7 @@ void LowerTypeTestsModule::buildBitSetsFromFunctionsNative( FAlias->takeName(F); if (FAlias->hasName()) F->setName(FAlias->getName() + ".cfi"); - F->replaceAllUsesWith(FAlias); + F->replaceUsesExceptBlockAddr(FAlias); } if (!F->isDeclarationForLinker()) F->setLinkage(GlobalValue::InternalLinkage); |