a ridiculous amount of propagation through the backend later,
have the code generate slap a srcloc metadata on inline asm nodes.
This allows us to diagnose invalid inline asms with such nice
diagnostics as:
<inline asm>:1:2: error: unrecognized instruction
abc incl %eax
^
asm.c:2:12: note: generated from here
__asm__ ("abc incl %0" : "+r" (X));
^
2 diagnostics generated.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100608 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGStmt.cpp b/lib/CodeGen/CGStmt.cpp
index ae2f791..6604b91 100644
--- a/lib/CodeGen/CGStmt.cpp
+++ b/lib/CodeGen/CGStmt.cpp
@@ -1044,9 +1044,10 @@
// Use ptrtoint as appropriate so that we can do our extension.
if (isa<llvm::PointerType>(Arg->getType()))
Arg = Builder.CreatePtrToInt(Arg,
- llvm::IntegerType::get(VMContext, LLVMPointerWidth));
+ llvm::IntegerType::get(VMContext, LLVMPointerWidth));
unsigned OutputSize = (unsigned)getContext().getTypeSize(OutputTy);
- Arg = Builder.CreateZExt(Arg, llvm::IntegerType::get(VMContext, OutputSize));
+ Arg = Builder.CreateZExt(Arg,
+ llvm::IntegerType::get(VMContext, OutputSize));
}
}
@@ -1102,6 +1103,12 @@
llvm::CallInst *Result = Builder.CreateCall(IA, Args.begin(), Args.end());
Result->addAttribute(~0, llvm::Attribute::NoUnwind);
+ // Slap the source location of the inline asm into a !srcloc metadata on the
+ // call.
+ unsigned LocID = S.getAsmString()->getLocStart().getRawEncoding();
+ llvm::Value *LocIDC =
+ llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), LocID);
+ Result->setMetadata("srcloc", llvm::MDNode::get(VMContext, &LocIDC, 1));
// Extract all of the register value results from the asm.
std::vector<llvm::Value*> RegResults;