[llvm-commits] [llvm] r43892 - in /llvm/trunk: include/llvm/Intrinsics.td include/llvm/IntrinsicsARM.td lib/Target/ARM/ARMISelLowering.cpp test/CodeGen/ARM/thread_pointer.ll

[Lauro Ramos Venancio]

Author: laurov
Date: Thu Nov  8 11:20:05 2007
New Revision: 43892

URL: http://llvm.org/viewvc/llvm-project?rev=43892&view=rev
Log:
[ARM] Implement __builtin_thread_pointer.


Added:
    llvm/trunk/include/llvm/IntrinsicsARM.td
    llvm/trunk/test/CodeGen/ARM/thread_pointer.ll
Modified:
    llvm/trunk/include/llvm/Intrinsics.td
    llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp

Modified: llvm/trunk/include/llvm/Intrinsics.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Intrinsics.td?rev=43892&r1=43891&r2=43892&view=diff

==============================================================================
--- llvm/trunk/include/llvm/Intrinsics.td (original)
+++ llvm/trunk/include/llvm/Intrinsics.td Thu Nov  8 11:20:05 2007
@@ -268,3 +268,4 @@
 
 include "llvm/IntrinsicsPowerPC.td"
 include "llvm/IntrinsicsX86.td"
+include "llvm/IntrinsicsARM.td"

Added: llvm/trunk/include/llvm/IntrinsicsARM.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/IntrinsicsARM.td?rev=43892&view=auto

==============================================================================
--- llvm/trunk/include/llvm/IntrinsicsARM.td (added)
+++ llvm/trunk/include/llvm/IntrinsicsARM.td Thu Nov  8 11:20:05 2007
@@ -0,0 +1,21 @@
+//===- IntrinsicsARM.td - Defines ARM intrinsics -----------*- tablegen -*-===//
+// 
+//                     The LLVM Compiler Infrastructure
+//
+// This file was developed by Lauro Ramos Venancio and is distributed under the
+// University of Illinois Open Source License. See LICENSE.TXT for details.
+// 
+//===----------------------------------------------------------------------===//
+//
+// This file defines all of the ARM-specific intrinsics.
+//
+//===----------------------------------------------------------------------===//
+
+
+//===----------------------------------------------------------------------===//
+// TLS
+
+let TargetPrefix = "arm" in {  // All intrinsics start with "llvm.arm.".
+  def int_arm_thread_pointer : GCCBuiltin<"__builtin_thread_pointer">,
+              Intrinsic<[llvm_ptr_ty],[IntrNoMem]>;
+}

Modified: llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp?rev=43892&r1=43891&r2=43892&view=diff

==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp Thu Nov  8 11:20:05 2007
@@ -23,6 +23,7 @@
 #include "llvm/CallingConv.h"
 #include "llvm/Constants.h"
 #include "llvm/Instruction.h"
+#include "llvm/Intrinsics.h"
 #include "llvm/CodeGen/MachineBasicBlock.h"
 #include "llvm/CodeGen/MachineFrameInfo.h"
 #include "llvm/CodeGen/MachineFunction.h"
@@ -213,7 +214,10 @@
   if (!UseSoftFloat && Subtarget->hasVFP2() && !Subtarget->isThumb())
     // Turn f64->i64 into FMRRD iff target supports vfp2.
     setOperationAction(ISD::BIT_CONVERT, MVT::i64, Custom);
-  
+
+  // We want to custom lower some of our intrinsics.
+  setOperationAction(ISD::INTRINSIC_WO_CHAIN, MVT::Other, Custom);
+
   setOperationAction(ISD::SETCC    , MVT::i32, Expand);
   setOperationAction(ISD::SETCC    , MVT::f32, Expand);
   setOperationAction(ISD::SETCC    , MVT::f64, Expand);
@@ -882,6 +886,16 @@
   return DAG.getNode(ARMISD::PIC_ADD, PtrVT, Result, PICLabel);
 }
 
+static SDOperand LowerINTRINSIC_WO_CHAIN(SDOperand Op, SelectionDAG &DAG) {
+  MVT::ValueType PtrVT = DAG.getTargetLoweringInfo().getPointerTy();
+  unsigned IntNo = cast<ConstantSDNode>(Op.getOperand(0))->getValue();
+  switch (IntNo) {
+  default: return SDOperand();    // Don't custom lower most intrinsics.
+  case Intrinsic::arm_thread_pointer:
+      return DAG.getNode(ARMISD::THREAD_POINTER, PtrVT);
+  }
+}
+
 static SDOperand LowerVASTART(SDOperand Op, SelectionDAG &DAG,
                               unsigned VarArgsFrameIndex) {
   // vastart just stores the address of the VarArgsFrameIndex slot into the
@@ -1410,6 +1424,7 @@
   case ISD::FRAMEADDR:     break;
   case ISD::GLOBAL_OFFSET_TABLE: return LowerGLOBAL_OFFSET_TABLE(Op, DAG);
   case ISD::MEMCPY:        return LowerMEMCPY(Op, DAG);
+  case ISD::INTRINSIC_WO_CHAIN: return LowerINTRINSIC_WO_CHAIN(Op, DAG);
   }
   return SDOperand();
 }

Added: llvm/trunk/test/CodeGen/ARM/thread_pointer.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/ARM/thread_pointer.ll?rev=43892&view=auto

==============================================================================
--- llvm/trunk/test/CodeGen/ARM/thread_pointer.ll (added)
+++ llvm/trunk/test/CodeGen/ARM/thread_pointer.ll Thu Nov  8 11:20:05 2007
@@ -0,0 +1,10 @@
+; RUN: llvm-as < %s | llc -march=arm -mtriple=arm-linux-gnueabi | \
+; RUN:     grep {__aeabi_read_tp}
+
+define i8* @test() {
+entry:
+	%tmp1 = call i8* @llvm.arm.thread.pointer( )		; <i8*> [#uses=0]
+	ret i8* %tmp1
+}
+
+declare i8* @llvm.arm.thread.pointer()