Add support for code generation of builtins.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@41188 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/CodeGen/CGBuiltin.cpp b/CodeGen/CGBuiltin.cpp
new file mode 100644
index 0000000..0095bde
--- /dev/null
+++ b/CodeGen/CGBuiltin.cpp
@@ -0,0 +1,30 @@
+//===---- CGBuiltin.cpp - Emit LLVM Code for builtins ---------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file was developed by Anders Carlsson and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This contains code to emit Builtin calls as LLVM code.
+//
+//===----------------------------------------------------------------------===//
+
+#include "CodeGenFunction.h"
+#include "CodeGenModule.h"
+#include "clang/AST/Builtins.h"
+#include "clang/AST/Expr.h"
+
+using namespace clang;
+using namespace CodeGen;
+
+RValue CodeGenFunction::EmitBuiltinExpr(unsigned builtinID, const CallExpr *E)
+{
+ switch (builtinID) {
+ default:
+ assert(0 && "Unknown builtin id");
+ }
+
+ return RValue::get(0);
+}
diff --git a/CodeGen/CGExpr.cpp b/CodeGen/CGExpr.cpp
index b0d34a3..317a554 100644
--- a/CodeGen/CGExpr.cpp
+++ b/CodeGen/CGExpr.cpp
@@ -14,6 +14,7 @@
#include "CodeGenFunction.h"
#include "CodeGenModule.h"
#include "clang/AST/AST.h"
+#include "clang/Lex/IdentifierTable.h"
#include "llvm/Constants.h"
#include "llvm/DerivedTypes.h"
#include "llvm/Function.h"
@@ -660,6 +661,15 @@
}
RValue CodeGenFunction::EmitCallExpr(const CallExpr *E) {
+ if (const ImplicitCastExpr *IcExpr =
+ dyn_cast<const ImplicitCastExpr>(E->getCallee()))
+ if (const DeclRefExpr *DRExpr =
+ dyn_cast<const DeclRefExpr>(IcExpr->getSubExpr()))
+ if (const FunctionDecl *FDecl =
+ dyn_cast<const FunctionDecl>(DRExpr->getDecl()))
+ if (unsigned builtinID = FDecl->getIdentifier()->getBuiltinID())
+ return EmitBuiltinExpr(builtinID, E);
+
llvm::Value *Callee = EmitExpr(E->getCallee()).getVal();
// The callee type will always be a pointer to function type, get the function
diff --git a/CodeGen/CodeGenFunction.h b/CodeGen/CodeGenFunction.h
index 314896a..5f78a33 100644
--- a/CodeGen/CodeGenFunction.h
+++ b/CodeGen/CodeGenFunction.h
@@ -352,6 +352,7 @@
RValue EmitCastExpr(const Expr *Op, QualType DestTy);
RValue EmitCallExpr(const CallExpr *E);
+ RValue EmitBuiltinExpr(unsigned builtinID, const CallExpr *E);
RValue EmitArraySubscriptExprRV(const ArraySubscriptExpr *E);
// Unary Operators.