diff options
Diffstat (limited to 'llvm/lib/Transforms/Scalar/SCCP.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/SCCP.cpp | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/llvm/lib/Transforms/Scalar/SCCP.cpp b/llvm/lib/Transforms/Scalar/SCCP.cpp index 81a429fe618..6f3d798f704 100644 --- a/llvm/lib/Transforms/Scalar/SCCP.cpp +++ b/llvm/lib/Transforms/Scalar/SCCP.cpp @@ -1133,8 +1133,12 @@ void SCCPSolver::visitLoadInst(LoadInst &I) { Constant *Ptr = PtrVal.getConstant(); // load null is undefined. - if (isa<ConstantPointerNull>(Ptr) && I.getPointerAddressSpace() == 0) - return; + if (isa<ConstantPointerNull>(Ptr)) { + if (NullPointerIsDefined(I.getFunction(), I.getPointerAddressSpace())) + return (void)markOverdefined(IV, &I); + else + return; + } // Transform load (constant global) into the value loaded. if (auto *GV = dyn_cast<GlobalVariable>(Ptr)) { |
