Add "sub immediate" instruction to the ARM integrated 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 312 matching lines @@
   (void)Func;
   UnimplementedError(Func->getContext()->getFlags());
 }
 
 template <>
 void InstARM32ThreeAddrGPR<InstARM32::Add>::emitIAS(const Cfg *Func) const {
   ARM32::AssemblerARM32 *Asm = Func->getAssembler<ARM32::AssemblerARM32>();
   Asm->add(getDest(), getSrc(0), getSrc(1), SetFlags, getPredicate());
 }
 
+template <>
+void InstARM32ThreeAddrGPR<InstARM32::Sub>::emitIAS(const Cfg *Func) const {
+  ARM32::AssemblerARM32 *Asm = Func->getAssembler<ARM32::AssemblerARM32>();
+  Asm->sub(getDest(), getSrc(0), getSrc(1), SetFlags, getPredicate());
+}
+
 InstARM32Call::InstARM32Call(Cfg *Func, Variable *Dest, Operand *CallTarget)
     : InstARM32(Func, InstARM32::Call, 1, Dest) {
   HasSideEffects = true;
   addSource(CallTarget);
 }
 
 InstARM32Label::InstARM32Label(Cfg *Func, TargetARM32 *Target)
     : InstARM32(Func, InstARM32::Label, 0, nullptr),
       Number(Target->makeNextLabelNumber()) {}
 
@@ skipping 1104 matching lines @@
 template class InstARM32ThreeAddrGPR<InstARM32::Sbc>;
 template class InstARM32ThreeAddrGPR<InstARM32::Sdiv>;
 template class InstARM32ThreeAddrGPR<InstARM32::Sub>;
 template class InstARM32ThreeAddrGPR<InstARM32::Udiv>;
 template class InstARM32ThreeAddrFP<InstARM32::Vadd>;
 template class InstARM32ThreeAddrFP<InstARM32::Vdiv>;
 template class InstARM32ThreeAddrFP<InstARM32::Vmul>;
 template class InstARM32ThreeAddrFP<InstARM32::Vsub>;
 
 } // end of namespace Ice