Support conversion of clamped double values for pixel arrays in Crankshaft.

src/arm/stub-cache-arm.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 3850 matching lines @@
         // Hoisted load.  vldr requires offset to be a multiple of 4 so we can
         // not include -kHeapObjectTag into it.
         __ sub(r5, value, Operand(kHeapObjectTag));
         __ vldr(d0, r5, HeapNumber::kValueOffset);
 
         __ Sbfx(r6, r6, HeapNumber::kExponentShift, HeapNumber::kExponentBits);
         // NaNs and Infinities have all-one exponents so they sign extend to -1.
         __ cmp(r6, Operand(-1));
         __ mov(r5, Operand(0), LeaveCC, eq);
 
-        // Not infinity or NaN simply convert to int.
-        if (IsElementTypeSigned(array_type)) {
-          __ vcvt_s32_f64(s0, d0, kDefaultRoundToZero, ne);
-        } else {
-          __ vcvt_u32_f64(s0, d0, kDefaultRoundToZero, ne);
-        }
+        __ vcvt_s32_f64(s0, d0, kDefaultRoundToZero, ne);
         __ vmov(r5, s0, ne);
 
         switch (array_type) {
           case kExternalByteArray:
           case kExternalUnsignedByteArray:
             __ strb(r5, MemOperand(r3, r4, LSL, 0));
             break;
           case kExternalShortArray:
           case kExternalUnsignedShortArray:
             __ strh(r5, MemOperand(r3, r4, LSL, 1));
@@ skipping 166 matching lines @@
 
   return GetCode(flags);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM