From: Chris Lattner <sabre@nondot.org>
Date: Wed, 3 Mar 2010 19:03:45 +0000 (+0000)
Subject: add framework for ARM builtins, Patch by Edmund Grimley Evans!
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=2752c0137d95aa2f4ee1cdff4b564bac842e041b;p=clang

add framework for ARM builtins, Patch by Edmund Grimley Evans!


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97656 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/include/clang/Basic/BuiltinsARM.def b/include/clang/Basic/BuiltinsARM.def
new file mode 100644
index 0000000000..4973076ae2
--- /dev/null
+++ b/include/clang/Basic/BuiltinsARM.def
@@ -0,0 +1,20 @@
+//===--- BuiltinsARM.def - ARM Builtin function database ----*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines the ARM-specific builtin function database.  Users of
+// this file must define the BUILTIN macro to make use of this information.
+//
+//===----------------------------------------------------------------------===//
+
+// The format of this database matches clang/Basic/Builtins.def.
+
+// FIXME: This is just a placeholder. NEON intrinsics should be listed here.
+BUILTIN(__builtin_thread_pointer, "v*", "")
+
+#undef BUILTIN
diff --git a/include/clang/Basic/TargetBuiltins.h b/include/clang/Basic/TargetBuiltins.h
index d2e9495017..f1edd1d451 100644
--- a/include/clang/Basic/TargetBuiltins.h
+++ b/include/clang/Basic/TargetBuiltins.h
@@ -14,12 +14,13 @@
 #undef PPC
 
 namespace clang {
-  /// X86 builtins
-  namespace X86 {
+
+  /// ARM builtins
+  namespace ARM {
     enum {
         LastTIBuiltin = clang::Builtin::FirstTSBuiltin-1,
 #define BUILTIN(ID, TYPE, ATTRS) BI##ID,
-#include "clang/Basic/BuiltinsX86.def"
+#include "clang/Basic/BuiltinsARM.def"
         LastTSBuiltin
     };
   }
@@ -33,6 +34,17 @@ namespace clang {
         LastTSBuiltin
     };
   }
+
+  /// X86 builtins
+  namespace X86 {
+    enum {
+        LastTIBuiltin = clang::Builtin::FirstTSBuiltin-1,
+#define BUILTIN(ID, TYPE, ATTRS) BI##ID,
+#include "clang/Basic/BuiltinsX86.def"
+        LastTSBuiltin
+    };
+  }
+
 } // end namespace clang.
 
 #endif
diff --git a/lib/Basic/Targets.cpp b/lib/Basic/Targets.cpp
index b8fe53599b..96ae4b7fc1 100644
--- a/lib/Basic/Targets.cpp
+++ b/lib/Basic/Targets.cpp
@@ -1207,6 +1207,8 @@ class ARMTargetInfo : public TargetInfo {
   unsigned SoftFloat : 1;
   unsigned SoftFloatABI : 1;
 
+  static const Builtin::Info BuiltinInfo[];
+
 public:
   ARMTargetInfo(const std::string &TripleStr)
     : TargetInfo(TripleStr), ABI("aapcs-linux"), CPU("arm1136j-s")
@@ -1393,9 +1395,8 @@ public:
   }
   virtual void getTargetBuiltins(const Builtin::Info *&Records,
                                  unsigned &NumRecords) const {
-    // FIXME: Implement.
-    Records = 0;
-    NumRecords = 0;
+    Records = BuiltinInfo;
+    NumRecords = clang::ARM::LastTSBuiltin-Builtin::FirstTSBuiltin;
   }
   virtual const char *getVAListDeclaration() const {
     return "typedef char* __builtin_va_list;";
@@ -1460,6 +1461,12 @@ void ARMTargetInfo::getGCCRegAliases(const GCCRegAlias *&Aliases,
   Aliases = GCCRegAliases;
   NumAliases = llvm::array_lengthof(GCCRegAliases);
 }
+
+const Builtin::Info ARMTargetInfo::BuiltinInfo[] = {
+#define BUILTIN(ID, TYPE, ATTRS) { #ID, TYPE, ATTRS, 0, false },
+#define LIBBUILTIN(ID, TYPE, ATTRS, HEADER) { #ID, TYPE, ATTRS, HEADER, false },
+#include "clang/Basic/BuiltinsARM.def"
+};
 } // end anonymous namespace.
 
 
diff --git a/lib/CodeGen/CGBuiltin.cpp b/lib/CodeGen/CGBuiltin.cpp
index 0f5e90fb15..df6ac7fc24 100644
--- a/lib/CodeGen/CGBuiltin.cpp
+++ b/lib/CodeGen/CGBuiltin.cpp
@@ -735,6 +735,9 @@ RValue CodeGenFunction::EmitBuiltinExpr(const FunctionDecl *FD,
 Value *CodeGenFunction::EmitTargetBuiltinExpr(unsigned BuiltinID,
                                               const CallExpr *E) {
   switch (Target.getTriple().getArch()) {
+  case llvm::Triple::arm:
+  case llvm::Triple::thumb:
+    return EmitARMBuiltinExpr(BuiltinID, E);
   case llvm::Triple::x86:
   case llvm::Triple::x86_64:
     return EmitX86BuiltinExpr(BuiltinID, E);
@@ -746,6 +749,18 @@ Value *CodeGenFunction::EmitTargetBuiltinExpr(unsigned BuiltinID,
   }
 }
 
+Value *CodeGenFunction::EmitARMBuiltinExpr(unsigned BuiltinID,
+                                           const CallExpr *E) {
+  switch (BuiltinID) {
+  default: return 0;
+
+  case ARM::BI__builtin_thread_pointer: {
+    Value *AtomF = CGM.getIntrinsic(Intrinsic::arm_thread_pointer, 0, 0);
+    return Builder.CreateCall(AtomF);
+  }
+  }
+}
+
 Value *CodeGenFunction::EmitX86BuiltinExpr(unsigned BuiltinID,
                                            const CallExpr *E) {
 
diff --git a/lib/CodeGen/CodeGenFunction.h b/lib/CodeGen/CodeGenFunction.h
index d582c0def3..88d6413300 100644
--- a/lib/CodeGen/CodeGenFunction.h
+++ b/lib/CodeGen/CodeGenFunction.h
@@ -1122,6 +1122,7 @@ public:
   /// is unhandled by the current target.
   llvm::Value *EmitTargetBuiltinExpr(unsigned BuiltinID, const CallExpr *E);
 
+  llvm::Value *EmitARMBuiltinExpr(unsigned BuiltinID, const CallExpr *E);
   llvm::Value *EmitX86BuiltinExpr(unsigned BuiltinID, const CallExpr *E);
   llvm::Value *EmitPPCBuiltinExpr(unsigned BuiltinID, const CallExpr *E);
 
diff --git a/test/CodeGen/builtins-arm.c b/test/CodeGen/builtins-arm.c
new file mode 100644
index 0000000000..5553757549
--- /dev/null
+++ b/test/CodeGen/builtins-arm.c
@@ -0,0 +1,6 @@
+// RUN: %clang_cc1 -triple thumbv7-eabi -target-cpu cortex-a8 -O3 -emit-llvm -o %t %s
+
+void *f0()
+{
+  return __builtin_thread_pointer();
+}