[ARM][Debug Info] Restore emitting of .cfi_def_cfa_offset for functions without stack...

[oota-llvm.git] / lib / Target / ARM / ARMISelLowering.cpp

diff --git a/lib/Target/ARM/ARMISelLowering.cpp b/lib/Target/ARM/ARMISelLowering.cpp
index fb12cc226afc1b2ce8fbd4194d155a920df7b99d..3b1b8dd1b8ee4d0b6b49930c39197760cdba132d 100644 (file)
--- a/lib/Target/ARM/ARMISelLowering.cpp
+++ b/lib/Target/ARM/ARMISelLowering.cpp
@@ -41,14 +41,15 @@
 #include "llvm/IR/IRBuilder.h"
 #include "llvm/IR/Instruction.h"
 #include "llvm/IR/Instructions.h"
-#include "llvm/IR/Intrinsics.h"
 #include "llvm/IR/IntrinsicInst.h"
+#include "llvm/IR/Intrinsics.h"
 #include "llvm/IR/Type.h"
 #include "llvm/MC/MCSectionMachO.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/MathExtras.h"
+#include "llvm/Support/raw_ostream.h"
 #include "llvm/Target/TargetOptions.h"
 #include <utility>
 using namespace llvm;
@@ -614,6 +615,12 @@ ARMTargetLowering::ARMTargetLowering(const TargetMachine &TM,
     setOperationAction(ISD::FRINT,      MVT::f64, Expand);
     setOperationAction(ISD::FNEARBYINT, MVT::f64, Expand);
     setOperationAction(ISD::FFLOOR,     MVT::f64, Expand);
+    setOperationAction(ISD::SINT_TO_FP, MVT::i32, Custom);
+    setOperationAction(ISD::UINT_TO_FP, MVT::i32, Custom);
+    setOperationAction(ISD::FP_TO_SINT, MVT::i32, Custom);
+    setOperationAction(ISD::FP_TO_UINT, MVT::i32, Custom);
+    setOperationAction(ISD::FP_TO_SINT, MVT::f64, Custom);
+    setOperationAction(ISD::FP_TO_UINT, MVT::f64, Custom);
     setOperationAction(ISD::FP_ROUND,   MVT::f32, Custom);
     setOperationAction(ISD::FP_EXTEND,  MVT::f64, Custom);
   }
@@ -869,14 +876,6 @@ ARMTargetLowering::ARMTargetLowering(const TargetMachine &TM,
 
   // Various VFP goodness
   if (!TM.Options.UseSoftFloat && !Subtarget->isThumb1Only()) {
-    // int <-> fp are custom expanded into bit_convert + ARMISD ops.
-    if (Subtarget->hasVFP2()) {
-      setOperationAction(ISD::SINT_TO_FP, MVT::i32, Custom);
-      setOperationAction(ISD::UINT_TO_FP, MVT::i32, Custom);
-      setOperationAction(ISD::FP_TO_UINT, MVT::i32, Custom);
-      setOperationAction(ISD::FP_TO_SINT, MVT::i32, Custom);
-    }
-
     // FP-ARMv8 adds f64 <-> f16 conversion. Before that it should be expanded.
     if (!Subtarget->hasFPARMv8() || Subtarget->isFPOnlySP()) {
       setOperationAction(ISD::FP16_TO_FP, MVT::f64, Expand);
@@ -1033,11 +1032,6 @@ const char *ARMTargetLowering::getTargetNodeName(unsigned Opcode) const {
 
   case ARMISD::RBIT:          return "ARMISD::RBIT";
 
-  case ARMISD::FTOSI:         return "ARMISD::FTOSI";
-  case ARMISD::FTOUI:         return "ARMISD::FTOUI";
-  case ARMISD::SITOF:         return "ARMISD::SITOF";
-  case ARMISD::UITOF:         return "ARMISD::UITOF";
-
   case ARMISD::SRL_FLAG:      return "ARMISD::SRL_FLAG";
   case ARMISD::SRA_FLAG:      return "ARMISD::SRA_FLAG";
   case ARMISD::RRX:           return "ARMISD::RRX";
@@ -3795,7 +3789,6 @@ SDValue ARMTargetLowering::LowerFP_TO_INT(SDValue Op, SelectionDAG &DAG) const {
   EVT VT = Op.getValueType();
   if (VT.isVector())
     return LowerVectorFP_TO_INT(Op, DAG);
-
   if (Subtarget->isFPOnlySP() && Op.getOperand(0).getValueType() == MVT::f64) {
     RTLIB::Libcall LC;
     if (Op.getOpcode() == ISD::FP_TO_SINT)
@@ -3808,20 +3801,7 @@ SDValue ARMTargetLowering::LowerFP_TO_INT(SDValue Op, SelectionDAG &DAG) const {
                        /*isSigned*/ false, SDLoc(Op)).first;
   }
 
-  SDLoc dl(Op);
-  unsigned Opc;
-
-  switch (Op.getOpcode()) {
-  default: llvm_unreachable("Invalid opcode!");
-  case ISD::FP_TO_SINT:
-    Opc = ARMISD::FTOSI;
-    break;
-  case ISD::FP_TO_UINT:
-    Opc = ARMISD::FTOUI;
-    break;
-  }
-  Op = DAG.getNode(Opc, dl, MVT::f32, Op.getOperand(0));
-  return DAG.getNode(ISD::BITCAST, dl, MVT::i32, Op);
+  return Op;
 }
 
 static SDValue LowerVectorINT_TO_FP(SDValue Op, SelectionDAG &DAG) {
@@ -3861,7 +3841,6 @@ SDValue ARMTargetLowering::LowerINT_TO_FP(SDValue Op, SelectionDAG &DAG) const {
   EVT VT = Op.getValueType();
   if (VT.isVector())
     return LowerVectorINT_TO_FP(Op, DAG);
-
   if (Subtarget->isFPOnlySP() && Op.getValueType() == MVT::f64) {
     RTLIB::Libcall LC;
     if (Op.getOpcode() == ISD::SINT_TO_FP)
@@ -3874,21 +3853,7 @@ SDValue ARMTargetLowering::LowerINT_TO_FP(SDValue Op, SelectionDAG &DAG) const {
                        /*isSigned*/ false, SDLoc(Op)).first;
   }
 
-  SDLoc dl(Op);
-  unsigned Opc;
-
-  switch (Op.getOpcode()) {
-  default: llvm_unreachable("Invalid opcode!");
-  case ISD::SINT_TO_FP:
-    Opc = ARMISD::SITOF;
-    break;
-  case ISD::UINT_TO_FP:
-    Opc = ARMISD::UITOF;
-    break;
-  }
-
-  Op = DAG.getNode(ISD::BITCAST, dl, MVT::f32, Op.getOperand(0));
-  return DAG.getNode(Opc, dl, VT, Op);
+  return Op;
 }
 
 SDValue ARMTargetLowering::LowerFCOPYSIGN(SDValue Op, SelectionDAG &DAG) const {
@@ -7140,16 +7105,20 @@ ARMTargetLowering::EmitStructByval(MachineInstr *MI,
 
   // Load an immediate to varEnd.
   unsigned varEnd = MRI.createVirtualRegister(TRC);
-  if (IsThumb2) {
+  if (Subtarget->useMovt(*MF)) {
     unsigned Vtmp = varEnd;
     if ((LoopSize & 0xFFFF0000) != 0)
       Vtmp = MRI.createVirtualRegister(TRC);
-    AddDefaultPred(BuildMI(BB, dl, TII->get(ARM::t2MOVi16), Vtmp)
-                       .addImm(LoopSize & 0xFFFF));
+    AddDefaultPred(BuildMI(BB, dl,
+                           TII->get(IsThumb2 ? ARM::t2MOVi16 : ARM::MOVi16),
+                           Vtmp).addImm(LoopSize & 0xFFFF));
 
     if ((LoopSize & 0xFFFF0000) != 0)
-      AddDefaultPred(BuildMI(BB, dl, TII->get(ARM::t2MOVTi16), varEnd)
-                         .addReg(Vtmp).addImm(LoopSize >> 16));
+      AddDefaultPred(BuildMI(BB, dl,
+                             TII->get(IsThumb2 ? ARM::t2MOVTi16 : ARM::MOVTi16),
+                             varEnd)
+                         .addReg(Vtmp)
+                         .addImm(LoopSize >> 16));
   } else {
     MachineConstantPool *ConstantPool = MF->getConstantPool();
     Type *Int32Ty = Type::getInt32Ty(MF->getFunction()->getContext());