diff options
| author | David Majnemer <david.majnemer@gmail.com> | 2017-07-31 17:47:07 +0000 |
|---|---|---|
| committer | David Majnemer <david.majnemer@gmail.com> | 2017-07-31 17:47:07 +0000 |
| commit | 91c6330c96aaf14605f7d520af72c62c1284ae45 (patch) | |
| tree | 156f8edcd3b58e46086c0916bd0d802afe947a49 /llvm/lib | |
| parent | cb0e74975a516d1fbc83e674c36e4cca3fee7731 (diff) | |
| download | bcm5719-llvm-91c6330c96aaf14605f7d520af72c62c1284ae45.tar.gz bcm5719-llvm-91c6330c96aaf14605f7d520af72c62c1284ae45.zip | |
[IPSCCP] Guard a user of getInitializer with hasDefinitiveInitializer
We are not allowed to reason about an initializer value without first
consulting hasDefinitiveInitializer.
llvm-svn: 309594
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/SCCP.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/Transforms/Scalar/SCCP.cpp b/llvm/lib/Transforms/Scalar/SCCP.cpp index a738ebb4607..4822cf7cce0 100644 --- a/llvm/lib/Transforms/Scalar/SCCP.cpp +++ b/llvm/lib/Transforms/Scalar/SCCP.cpp @@ -1790,7 +1790,8 @@ static bool runIPSCCP(Module &M, const DataLayout &DL, // variables that do not have their 'addresses taken'. If they don't have // their addresses taken, we can propagate constants through them. for (GlobalVariable &G : M.globals()) - if (!G.isConstant() && G.hasLocalLinkage() && !AddressIsTaken(&G)) + if (!G.isConstant() && G.hasLocalLinkage() && + G.hasDefinitiveInitializer() && !AddressIsTaken(&G)) Solver.TrackValueOfGlobalVariable(&G); // Solve for constants. |
