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| author | Owen Anderson <resistor@mac.com> | 2008-03-13 22:07:10 +0000 |
|---|---|---|
| committer | Owen Anderson <resistor@mac.com> | 2008-03-13 22:07:10 +0000 |
| commit | 7a69e3aef388707e168f98551aacd89b71a2b89d (patch) | |
| tree | 19b5f29e5b2e1693682c099995d70f0acb28a972 /llvm/lib/Transforms/Scalar/GVN.cpp | |
| parent | c21cfe37ec5e55dbd7d3214a086412e793041144 (diff) | |
| download | bcm5719-llvm-7a69e3aef388707e168f98551aacd89b71a2b89d.tar.gz bcm5719-llvm-7a69e3aef388707e168f98551aacd89b71a2b89d.zip | |
Fix a bug in GVN that Duncan noticed, where we potentially need to insert a
pointer bitcast when performing return slot optimization.
llvm-svn: 48343
Diffstat (limited to 'llvm/lib/Transforms/Scalar/GVN.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/GVN.cpp | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/llvm/lib/Transforms/Scalar/GVN.cpp b/llvm/lib/Transforms/Scalar/GVN.cpp index 545f7091cc1..1d764af6888 100644 --- a/llvm/lib/Transforms/Scalar/GVN.cpp +++ b/llvm/lib/Transforms/Scalar/GVN.cpp @@ -1171,8 +1171,12 @@ bool GVN::performCallSlotOptzn(MemCpyInst* cpy, CallInst* C, // All the checks have passed, so do the transformation. for (unsigned i = 0; i < CS.arg_size(); ++i) - if (CS.getArgument(i) == cpySrc) + if (CS.getArgument(i) == cpySrc) { + if (cpySrc->getType() != cpyDest->getType()) + cpyDest = CastInst::createPointerCast(cpyDest, cpySrc->getType(), + cpyDest->getName(), C); CS.setArgument(i, cpyDest); + } // Drop any cached information about the call, because we may have changed // its dependence information by changing its parameter. |
