Fixes ARM SIMD vabsqs instruction in the simulator.

runtime/vm/simulator_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 <math.h>  // for isnan.
 #include <setjmp.h>
 #include <stdlib.h>
 
 #include "vm/globals.h"
 #if defined(TARGET_ARCH_ARM)
@@ skipping 3183 matching lines @@
       // Format(instr, "vmaxqs 'qd, 'qn, 'qm");
       for (int i = 0; i < 4; i++) {
         s8d.data_[i].f =
           s8n.data_[i].f >= s8m.data_[i].f ? s8n.data_[i].f : s8m.data_[i].f;
       }
     } else if ((instr->Bits(8, 4) == 7) && (instr->Bit(4) == 0) &&
                (instr->Bits(20, 2) == 3) && (instr->Bits(23, 2) == 3) &&
                (instr->Bit(7) == 0) && (instr->Bits(16, 4) == 9)) {
       // Format(instr, "vabsqs 'qd, 'qm");
       for (int i = 0; i < 4; i++) {
-        s8d.data_[i].f = abs(s8m.data_[i].f);
+        s8d.data_[i].f = fabsf(s8m.data_[i].f);
       }
     } else if ((instr->Bits(8, 4) == 7) && (instr->Bit(4) == 0) &&
                (instr->Bits(20, 2) == 3) && (instr->Bits(23, 2) == 3) &&
                (instr->Bit(7) == 1) && (instr->Bits(16, 4) == 9)) {
       // Format(instr, "vnegqs 'qd, 'qm");
       for (int i = 0; i < 4; i++) {
         s8d.data_[i].f = -s8m.data_[i].f;
       }
     } else if ((instr->Bits(7, 5) == 10) && (instr->Bit(4) == 0) &&
                (instr->Bits(20, 2) == 3) && (instr->Bits(23, 2) == 3) &&
@@ skipping 509 matching lines @@
   set_register(kExceptionObjectReg, bit_cast<int32_t>(raw_exception));
   set_register(kStackTraceObjectReg, bit_cast<int32_t>(raw_stacktrace));
   buf->Longjmp();
 }
 
 }  // namespace dart
 
 #endif  // !defined(HOST_ARCH_ARM)
 
 #endif  // defined TARGET_ARCH_ARM