Increases the number of ARM floating-point registers.

runtime/vm/intermediate_language_arm.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"  // Needed here to get TARGET_ARCH_ARM.
 #if defined(TARGET_ARCH_ARM)
 
 #include "vm/intermediate_language.h"
 
 #include "lib/error.h"
@@ skipping 2929 matching lines @@
     default: UNREACHABLE();
   }
 }
 
 
 LocationSummary* Float32x4ShuffleInstr::MakeLocationSummary() const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
       new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
-  summary->set_in(0, Location::RequiresFpuRegister());
-  summary->set_out(Location::RequiresFpuRegister());
+  // Low (< Q7) Q registers are needed for the vcvtds instruction.
+  summary->set_in(0, Location::FpuRegisterLocation(Q5));
+  summary->set_out(Location::FpuRegisterLocation(Q6));
   return summary;
 }
 
 
 void Float32x4ShuffleInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   QRegister value = locs()->in(0).fpu_reg();
   QRegister result = locs()->out().fpu_reg();
   DRegister dresult0 = EvenDRegisterOf(result);
   SRegister sresult0 = EvenSRegisterOf(dresult0);
 
@@ skipping 40 matching lines @@
 
 LocationSummary* Float32x4ConstructorInstr::MakeLocationSummary() const {
   const intptr_t kNumInputs = 4;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
       new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresFpuRegister());
   summary->set_in(1, Location::RequiresFpuRegister());
   summary->set_in(2, Location::RequiresFpuRegister());
   summary->set_in(3, Location::RequiresFpuRegister());
-  summary->set_out(Location::RequiresFpuRegister());
+  // Low (< 7) Q registers are needed for the vcvtsd instruction.
+  summary->set_out(Location::FpuRegisterLocation(Q6));
   return summary;
 }
 
 
 void Float32x4ConstructorInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   QRegister q0 = locs()->in(0).fpu_reg();
   QRegister q1 = locs()->in(1).fpu_reg();
   QRegister q2 = locs()->in(2).fpu_reg();
   QRegister q3 = locs()->in(3).fpu_reg();
   QRegister r = locs()->out().fpu_reg();
@@ skipping 149 matching lines @@
 }
 
 
 LocationSummary* Float32x4WithInstr::MakeLocationSummary() const {
   const intptr_t kNumInputs = 2;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
       new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresFpuRegister());
   summary->set_in(1, Location::RequiresFpuRegister());
-  summary->set_out(Location::RequiresFpuRegister());
+  // Low (< 7) Q registers are needed for the vmovs instruction.
+  summary->set_out(Location::FpuRegisterLocation(Q6));
   return summary;
 }
 
 
 void Float32x4WithInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   QRegister replacement = locs()->in(0).fpu_reg();
   QRegister value = locs()->in(1).fpu_reg();
   QRegister result = locs()->out().fpu_reg();
 
   DRegister dresult0 = EvenDRegisterOf(result);
@@ skipping 46 matching lines @@
 void Uint32x4BoolConstructorInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   UNIMPLEMENTED();
 }
 
 
 LocationSummary* Uint32x4GetFlagInstr::MakeLocationSummary() const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
       new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
-  summary->set_in(0, Location::RequiresFpuRegister());
+  // Low (< 7) Q registers are needed for the vmovrs instruction.
+  summary->set_in(0, Location::FpuRegisterLocation(Q6));
   summary->set_out(Location::RequiresRegister());
   return summary;
 }
 
 
 void Uint32x4GetFlagInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   QRegister value = locs()->in(0).fpu_reg();
   Register result = locs()->out().reg();
 
   DRegister dvalue0 = EvenDRegisterOf(value);
@@ skipping 848 matching lines @@
   compiler->GenerateCall(token_pos(),
                          &label,
                          PcDescriptors::kOther,
                          locs());
   __ Drop(2);  // Discard type arguments and receiver.
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM