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| author | Peter Collingbourne <peter@pcc.me.uk> | 2019-08-02 17:43:45 +0000 |
|---|---|---|
| committer | Peter Collingbourne <peter@pcc.me.uk> | 2019-08-02 17:43:45 +0000 |
| commit | 4dcf8800e2b8c2e43a9022054c6463a775851226 (patch) | |
| tree | 631f9f7b3fd0f1f9e994987e7156e774cf4ae026 /llvm/lib/CodeGen/Analysis.cpp | |
| parent | 9ce5f41851fe8016b6495ef514d772c6bc72cad2 (diff) | |
| download | bcm5719-llvm-4dcf8800e2b8c2e43a9022054c6463a775851226.tar.gz bcm5719-llvm-4dcf8800e2b8c2e43a9022054c6463a775851226.zip | |
CodeGen: Don't follow aliases when extracting type info.
This fixes a crash in the case where the type info object is an alias
pointing to a non-zero offset within a global or is otherwise unanalyzable
by the stripPointerCasts() function. Looking through the alias is not the
right thing to do anyway for similar reasons as D65118.
Differential Revision: https://reviews.llvm.org/D65314
llvm-svn: 367696
Diffstat (limited to 'llvm/lib/CodeGen/Analysis.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/Analysis.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/Analysis.cpp b/llvm/lib/CodeGen/Analysis.cpp index d158e70b86a..e72938ba9be 100644 --- a/llvm/lib/CodeGen/Analysis.cpp +++ b/llvm/lib/CodeGen/Analysis.cpp @@ -156,7 +156,7 @@ void llvm::computeValueLLTs(const DataLayout &DL, Type &Ty, /// ExtractTypeInfo - Returns the type info, possibly bitcast, encoded in V. GlobalValue *llvm::ExtractTypeInfo(Value *V) { - V = V->stripPointerCasts(); + V = V->stripPointerCastsNoFollowAliases(); GlobalValue *GV = dyn_cast<GlobalValue>(V); GlobalVariable *Var = dyn_cast<GlobalVariable>(V); |
