Add VMOV(immediate) instructions to the ARM assembler.

src/IceInstARM32.cpp

 //===- subzero/src/IceInstARM32.cpp - ARM32 instruction implementation ----===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 1106 matching lines @@
     Str << getPredicate() << WidthString;
   } else {
     Str << WidthString << getPredicate();
   }
   Str << "\t";
   Dest->emit(Func);
   Str << ", ";
   Src0->emit(Func);
 }
 
+void InstARM32Mov::emitIASScalarVFPMove(const Cfg *Func) const {
+  auto *Asm = Func->getAssembler<ARM32::AssemblerARM32>();
+  Operand *Src0 = getSrc(0);
+  Variable *Dest = getDest();
+  switch (Dest->getType()) {
+  default:
+    assert(false && "Do not know how to emit scalar FP move for type.");
+    return;
+  case IceType_f32:
+    if (const auto *FpImm = llvm::dyn_cast<OperandARM32FlexFpImm>(Src0)) {
+      Asm->vmovs(Dest, FpImm, getPredicate());
+      return;
+    }
+    break;
+  case IceType_f64:
+    if (const auto *FpImm = llvm::dyn_cast<OperandARM32FlexFpImm>(Src0)) {
+      Asm->vmovd(Dest, FpImm, getPredicate());
+      return;
+    }
+    break;
+  }
+  // TODO(kschimpf) Handle register to register move.
+  Asm->setNeedsTextFixup();
+  return;
+}
+
 void InstARM32Mov::emitIASCoreVFPMove(const Cfg *Func) const {
   auto *Asm = Func->getAssembler<ARM32::AssemblerARM32>();
   Operand *Src0 = getSrc(0);
   if (!llvm::isa<Variable>(Src0))
     // TODO(kschimpf) Handle moving constants into registers.
     return Asm->setNeedsTextFixup();
 
   // Move register to register.
   Variable *Dest = getDest();
   switch (Dest->getType()) {
   default:
     // TODO(kschimpf): Fill this out more.
     return Asm->setNeedsTextFixup();
   case IceType_f32:
     switch (Src0->getType()) {
     default:
       // TODO(kschimpf): Fill this out more?
       return Asm->setNeedsTextFixup();
     case IceType_i32:
       return Asm->vmovsr(Dest, Src0, getPredicate());
     }
   }
 }
 
 void InstARM32Mov::emitIASSingleDestSingleSource(const Cfg *Func) const {
-  auto *Asm = Func->getAssembler<ARM32::AssemblerARM32>();
   Variable *Dest = getDest();
   Operand *Src0 = getSrc(0);
 
   if (!Dest->hasReg()) {
     llvm::report_fatal_error("mov can't store.");
   }
 
   if (isMemoryAccess(Src0)) {
     llvm::report_fatal_error("mov can't load.");
   }
 
   if (isMoveBetweenCoreAndVFPRegisters(Dest, Src0))
     return emitIASCoreVFPMove(Func);
 
   const Type DestTy = Dest->getType();
   if (isScalarFloatingType(DestTy))
-    return Asm->setNeedsTextFixup();
+    return emitIASScalarVFPMove(Func);
 
+  auto *Asm = Func->getAssembler<ARM32::AssemblerARM32>();
   if (isVectorType(DestTy))
     return Asm->setNeedsTextFixup();
 
   return Asm->mov(Dest, Src0, getPredicate());
 }
 
 void InstARM32Mov::emit(const Cfg *Func) const {
   if (!BuildDefs::dump())
     return;
   assert(!(isMultiDest() && isMultiSource()) && "Invalid vmov type.");
@@ skipping 1122 matching lines @@
 
 template class InstARM32FourAddrGPR<InstARM32::Mla>;
 template class InstARM32FourAddrGPR<InstARM32::Mls>;
 
 template class InstARM32CmpLike<InstARM32::Cmn>;
 template class InstARM32CmpLike<InstARM32::Cmp>;
 template class InstARM32CmpLike<InstARM32::Tst>;
 
 } // end of namespace ARM32
 } // end of namespace Ice