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| author | Jim Grosbach <grosbach@apple.com> | 2012-02-03 00:00:55 +0000 |
|---|---|---|
| committer | Jim Grosbach <grosbach@apple.com> | 2012-02-03 00:00:55 +0000 |
| commit | e84ae7bfa09685224279f5dc59860b70472d3cc6 (patch) | |
| tree | e26d4a69089d544885c1cf5ee880080e2d74534e /llvm/lib | |
| parent | 0ab54184d73690808854b4e6d84d11c9edb0045f (diff) | |
| download | bcm5719-llvm-e84ae7bfa09685224279f5dc59860b70472d3cc6.tar.gz bcm5719-llvm-e84ae7bfa09685224279f5dc59860b70472d3cc6.zip | |
Restrict InstCombine from converting varargs to or from fixed args.
More targetted fix replacing d0e277d272d517ca1cda368267d199f0da7cad95.
llvm-svn: 149648
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp b/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp index a87fbbd9895..26e0a5528c3 100644 --- a/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp +++ b/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp @@ -1104,6 +1104,13 @@ bool InstCombiner::transformConstExprCastCall(CallSite CS) { PointerType *APTy = cast<PointerType>(CS.getCalledValue()->getType()); if (FT->isVarArg()!=cast<FunctionType>(APTy->getElementType())->isVarArg()) return false; + + // If both the callee and the cast type are varargs, we still have to make + // sure the number of fixed parameters are the same or we have the same + // ABI issues as if we introduce a varargs call. + if (FT->getNumParams() != + cast<FunctionType>(APTy->getElementType())->getNumParams()) + return false; } if (FT->getNumParams() < NumActualArgs && FT->isVarArg() && |
