Add signMask getter to Float32x4

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 "vm/dart_entry.h"
@@ skipping 3012 matching lines @@
         __ vmovs(sresult1, svalues[(mask_ >> 2) & 0x3]);
         __ vmovs(sresult2, svalues[(mask_ >> 4) & 0x3]);
         __ vmovs(sresult3, svalues[(mask_ >> 6) & 0x3]);
       }
       break;
     default: UNREACHABLE();
   }
 }
 
 
+LocationSummary* Simd32x4GetSignMaskInstr::MakeLocationSummary() const {
+  const intptr_t kNumInputs = 1;
+  const intptr_t kNumTemps = 1;
+  LocationSummary* summary =
+      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+  summary->set_in(0, Location::FpuRegisterLocation(Q5));
+  summary->set_temp(0, Location::RequiresRegister());
+  summary->set_out(Location::RequiresRegister());
+  return summary;
+}
+
+
+void Simd32x4GetSignMaskInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
+  QRegister value = locs()->in(0).fpu_reg();
+  DRegister dvalue0 = EvenDRegisterOf(value);
+  DRegister dvalue1 = OddDRegisterOf(value);
+
+  Register out = locs()->out().reg();
+  Register temp = locs()->temp(0).reg();
+
+  // X lane.
+  __ vmovrs(out, EvenSRegisterOf(dvalue0));
+  __ Lsr(out, out, 31);
+  // Y lane.
+  __ vmovrs(temp, OddSRegisterOf(dvalue0));
+  __ Lsr(temp, temp, 31);
+  __ orr(out, out, ShifterOperand(temp, LSL, 1));
+  // Z lane.
+  __ vmovrs(temp, EvenSRegisterOf(dvalue1));
+  __ Lsr(temp, temp, 31);
+  __ orr(out, out, ShifterOperand(temp, LSL, 2));
+  // W lane.
+  __ vmovrs(temp, OddSRegisterOf(dvalue1));
+  __ Lsr(temp, temp, 31);
+  __ orr(out, out, ShifterOperand(temp, LSL, 3));
+  // Tag.
+  __ SmiTag(out);
+}
+
+
 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());
   // Low (< 7) Q registers are needed for the vcvtsd instruction.
@@ skipping 1409 matching lines @@
   compiler->GenerateCall(token_pos(),
                          &label,
                          PcDescriptors::kOther,
                          locs());
   __ Drop(2);  // Discard type arguments and receiver.
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM