Handle MOV (immediate) and MOVT to load ARM global addresses.

src/IceInstARM32.cpp

Index: src/IceInstARM32.cpp
diff --git a/src/IceInstARM32.cpp b/src/IceInstARM32.cpp
index d2cd6efbc4464922b84384e59acc82274ba63336..fab53210bc89f8f3dc28d91be886b4ca3f5c68df 100644
--- a/src/IceInstARM32.cpp
+++ b/src/IceInstARM32.cpp
@@ -789,7 +789,7 @@ void InstARM32Call::emit(const Cfg *Func) const {
     // This shouldn't happen (typically have to copy the full 32-bits to a
     // register and do an indirect jump).
     llvm::report_fatal_error("ARM32Call to ConstantInteger32");
-  } else if (const auto CallTarget =
+  } else if (const auto *CallTarget =
                  llvm::dyn_cast<ConstantRelocatable>(getCallTarget())) {
     // Calls only have 24-bits, but the linker should insert veneers to extend
     // the range if needed.
@@ -881,6 +881,11 @@ void InstARM32TwoAddrGPR<K>::emitIAS(const Cfg *Func) const {
   emitUsingTextFixup(Func);
 }
 
+template <InstARM32::InstKindARM32 K, bool Nws>
+void InstARM32UnaryopGPR<K, Nws>::emitIAS(const Cfg *Func) const {
+  emitUsingTextFixup(Func);
+}
+
 template <> void InstARM32Movw::emit(const Cfg *Func) const {
   if (!BuildDefs::dump())
     return;
@@ -890,7 +895,7 @@ template <> void InstARM32Movw::emit(const Cfg *Func) const {
   getDest()->emit(Func);
   Str << ", ";
   Constant *Src0 = llvm::cast<Constant>(getSrc(0));
-  if (auto CR = llvm::dyn_cast<ConstantRelocatable>(Src0)) {
+  if (auto *CR = llvm::dyn_cast<ConstantRelocatable>(Src0)) {
     Str << "#:lower16:";
     CR->emitWithoutPrefix(Func->getTarget());
   } else {
@@ -898,6 +903,12 @@ template <> void InstARM32Movw::emit(const Cfg *Func) const {
   }
 }
 
+template <> void InstARM32Movw::emitIAS(const Cfg *Func) const {
+  assert(getSrcSize() == 1);
+  ARM32::AssemblerARM32 *Asm = Func->getAssembler<ARM32::AssemblerARM32>();
+  Asm->movw(getDest(), getSrc(0), getPredicate());
+}
+
 template <> void InstARM32Movt::emit(const Cfg *Func) const {
   if (!BuildDefs::dump())
     return;
@@ -908,7 +919,7 @@ template <> void InstARM32Movt::emit(const Cfg *Func) const {
   Str << "\t" << Opcode << getPredicate() << "\t";
   Dest->emit(Func);
   Str << ", ";
-  if (auto CR = llvm::dyn_cast<ConstantRelocatable>(Src1)) {
+  if (auto *CR = llvm::dyn_cast<ConstantRelocatable>(Src1)) {
     Str << "#:upper16:";
     CR->emitWithoutPrefix(Func->getTarget());
   } else {
@@ -916,6 +927,12 @@ template <> void InstARM32Movt::emit(const Cfg *Func) const {
   }
 }
 
+template <> void InstARM32Movt::emitIAS(const Cfg *Func) const {
+  assert(getSrcSize() == 2);
+  ARM32::AssemblerARM32 *Asm = Func->getAssembler<ARM32::AssemblerARM32>();
+  Asm->movt(getDest(), getSrc(1), getPredicate());
+}
+
 void InstARM32Pop::emit(const Cfg *Func) const {
   // TODO(jpp): Improve FP register save/restore.
   if (!BuildDefs::dump())
@@ -1454,4 +1471,13 @@ template class InstARM32ThreeAddrFP<InstARM32::Vsub>;
 
 template class InstARM32TwoAddrGPR<InstARM32::Movt>;
 
+template class InstARM32UnaryopGPR<InstARM32::Movw, false>;
+template class InstARM32UnaryopGPR<InstARM32::Clz, false>;
+template class InstARM32UnaryopGPR<InstARM32::Mvn, false>;
+template class InstARM32UnaryopGPR<InstARM32::Rbit, false>;
+template class InstARM32UnaryopGPR<InstARM32::Rev, false>;
+template class InstARM32UnaryopGPR<InstARM32::Sxt, true>;
+template class InstARM32UnaryopGPR<InstARM32::Uxt, true>;
+template class InstARM32UnaryopFP<InstARM32::Vsqrt>;
+
 } // end of namespace Ice