Verifier: Loosen r233559 check for 'function:' field in MDSubprogram

Stop worrying about what the `function:` field is in `MDSubprogram`,
since it could be a bitcast [1].  Just check its type and leave it at
that.

[1]: http://lab.llvm.org:8080/green/job/clang-stage2-configure-Rlto_build/3540/

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@233562 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/IR/Verifier.cpp b/lib/IR/Verifier.cpp
index 8d7040bad4da8559f0ca174ccafb53f2708633cb..f4a0b679e55e756075a85300c8383c15fc7f709a 100644 (file)
--- a/lib/IR/Verifier.cpp
+++ b/lib/IR/Verifier.cpp
@@ -846,9 +846,8 @@ void Verifier::visitMDSubprogram(const MDSubprogram &N) {
     auto *FMD = dyn_cast<ConstantAsMetadata>(RawF);
     auto *F = FMD ? FMD->getValue() : nullptr;
     auto *FT = F ? dyn_cast<PointerType>(F->getType()) : nullptr;
-    Assert(F && (isa<Function>(F) || isa<ConstantPointerNull>(F)) && FT &&
-               isa<FunctionType>(FT->getElementType()),
-           "invalid function", &N, F);
+    Assert(F && FT && isa<FunctionType>(FT->getElementType()),
+           "invalid function", &N, F, FT);
   }
   if (N.getRawTemplateParams()) {
     auto *Params = dyn_cast<MDTuple>(N.getRawTemplateParams());