Check for null pointer before dereferencing. A careless typo on my part.

I don't know why this did not show up earlier. This code has been
around for ages.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@197119 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/Mips/MipsISelLowering.cpp b/lib/Target/Mips/MipsISelLowering.cpp
index b1a25dd46392099ec26915075e1ef5730967dd7e..8f3c2649079a1de8f3e9ca0bd52e67c5022256e1 100644 (file)
--- a/lib/Target/Mips/MipsISelLowering.cpp
+++ b/lib/Target/Mips/MipsISelLowering.cpp
@@ -2331,7 +2331,7 @@ getOpndList(SmallVectorImpl<SDValue> &Ops,
     if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(CLI.Callee)) {
       llvm::StringRef Sym = G->getGlobal()->getName();
       Function *F = G->getGlobal()->getParent()->getFunction(Sym);
     if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(CLI.Callee)) {
       llvm::StringRef Sym = G->getGlobal()->getName();
       Function *F = G->getGlobal()->getParent()->getFunction(Sym);

-      if (F->hasFnAttribute("__Mips16RetHelper")) {
+      if (F && F->hasFnAttribute("__Mips16RetHelper")) {

         Mask = MipsRegisterInfo::getMips16RetHelperMask();
       }
     }
         Mask = MipsRegisterInfo::getMips16RetHelperMask();
       }
     }


@@ -3262,7 +3262,7 @@ MipsTargetLowering::MipsCC::SpecialCallingConvType
     if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee)) {
       llvm::StringRef Sym = G->getGlobal()->getName();
       Function *F = G->getGlobal()->getParent()->getFunction(Sym);
     if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee)) {
       llvm::StringRef Sym = G->getGlobal()->getName();
       Function *F = G->getGlobal()->getParent()->getFunction(Sym);

-      if (F->hasFnAttribute("__Mips16RetHelper")) {
+      if (F && F->hasFnAttribute("__Mips16RetHelper")) {

         SpecialCallingConv = MipsCC::Mips16RetHelperConv;
       }
     }
         SpecialCallingConv = MipsCC::Mips16RetHelperConv;
       }
     }