Implement codegen support for lowering "library builtins" like __builtin_isinf
to their corresponding library routines (e.g. isinf). This allows us to handle
all the stuff in macos math.h, and other stuff as it's added to *Builtins.def.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@41634 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/CodeGen/CodeGenModule.cpp b/CodeGen/CodeGenModule.cpp
index a6a887f..ec3d0af 100644
--- a/CodeGen/CodeGenModule.cpp
+++ b/CodeGen/CodeGenModule.cpp
@@ -127,7 +127,11 @@
// and for the existing one to be turned into a constantexpr cast of the
// builtin. In the case where the existing one is a static function, it
// should just be renamed.
- assert(getModule().getFunction(Name) == 0 && "FIXME: Name collision");
+ if (llvm::Function *Existing = getModule().getFunction(Name)) {
+ if (Existing->getFunctionType() == Ty && Existing->hasExternalLinkage())
+ return FunctionSlot = Existing;
+ assert(Existing == 0 && "FIXME: Name collision");
+ }
// FIXME: param attributes for sext/zext etc.
return FunctionSlot = new llvm::Function(Ty, llvm::Function::ExternalLinkage,