Use VLDR instead of VMOVs from GPR when a 64-bit double can't be encoded as a VMOV immediate.

src/arm/stub-cache-arm.cc

Index: src/arm/stub-cache-arm.cc
diff --git a/src/arm/stub-cache-arm.cc b/src/arm/stub-cache-arm.cc
index d3b58624c8b24058eda3cdec1742bc7ccc36c739..efef5df9569d1b112719614cd53e5b55bc1df0cd 100644
--- a/src/arm/stub-cache-arm.cc
+++ b/src/arm/stub-cache-arm.cc
@@ -730,7 +730,7 @@ static void GenerateFastApiDirectCall(MacroAssembler* masm,
   __ mov(ip, Operand(argc));
   __ str(ip, MemOperand(r0, 2 * kPointerSize));
   // v8::Arguments::is_construct_call = 0
-  __ mov(ip, Operand(0));
+  __ mov(ip, Operand::Zero());
   __ str(ip, MemOperand(r0, 3 * kPointerSize));
 
   const int kStackUnwindSpace = argc + kFastApiCallArguments + 1;
@@ -1003,7 +1003,7 @@ static void StoreIntAsFloat(MacroAssembler* masm,
 
     __ and_(fval, ival, Operand(kBinary32SignMask), SetCC);
     // Negate value if it is negative.
-    __ rsb(ival, ival, Operand(0, RelocInfo::NONE), LeaveCC, ne);
+    __ rsb(ival, ival, Operand::Zero(), LeaveCC, ne);
 
     // We have -1, 0 or 1, which we treat specially. Register ival contains
     // absolute value: it is either equal to 1 (special case of -1 and 1),
@@ -1072,7 +1072,7 @@ static void GenerateUInt2Double(MacroAssembler* masm,
     __ mov(loword, Operand(hiword, LSL, mantissa_shift_for_lo_word));
     __ orr(hiword, scratch, Operand(hiword, LSR, mantissa_shift_for_hi_word));
   } else {
-    __ mov(loword, Operand(0, RelocInfo::NONE));
+    __ mov(loword, Operand::Zero());
     __ orr(hiword, scratch, Operand(hiword, LSL, mantissa_shift_for_hi_word));
   }
 
@@ -2235,7 +2235,7 @@ Handle<Code> CallStubCompiler::CompileMathFloorCall(
   __ mov(r0, Operand(r0, LSL, kSmiTagSize));
 
   // Check for -0.
-  __ cmp(r0, Operand(0, RelocInfo::NONE));
+  __ cmp(r0, Operand::Zero());
   __ b(&restore_fpscr_and_return, ne);
   // r5 already holds the HeapNumber exponent.
   __ tst(r5, Operand(HeapNumber::kSignMask));
@@ -4258,18 +4258,18 @@ void KeyedStoreStubCompiler::GenerateStoreExternalArray(
         // and infinities. All these should be converted to 0.
         __ mov(r7, Operand(HeapNumber::kExponentMask));
         __ and_(r9, r5, Operand(r7), SetCC);
-        __ mov(r5, Operand(0, RelocInfo::NONE), LeaveCC, eq);
+        __ mov(r5, Operand::Zero(), LeaveCC, eq);
         __ b(eq, &done);
 
         __ teq(r9, Operand(r7));
-        __ mov(r5, Operand(0, RelocInfo::NONE), LeaveCC, eq);
+        __ mov(r5, Operand::Zero(), LeaveCC, eq);
         __ b(eq, &done);
 
         // Unbias exponent.
         __ mov(r9, Operand(r9, LSR, HeapNumber::kExponentShift));
         __ sub(r9, r9, Operand(HeapNumber::kExponentBias), SetCC);
         // If exponent is negative then result is 0.
-        __ mov(r5, Operand(0, RelocInfo::NONE), LeaveCC, mi);
+        __ mov(r5, Operand::Zero(), LeaveCC, mi);
         __ b(mi, &done);
 
         // If exponent is too big then result is minimal value.
@@ -4285,14 +4285,14 @@ void KeyedStoreStubCompiler::GenerateStoreExternalArray(
         __ mov(r5, Operand(r5, LSR, r9), LeaveCC, pl);
         __ b(pl, &sign);
 
-        __ rsb(r9, r9, Operand(0, RelocInfo::NONE));
+        __ rsb(r9, r9, Operand::Zero());
         __ mov(r5, Operand(r5, LSL, r9));
         __ rsb(r9, r9, Operand(meaningfull_bits));
         __ orr(r5, r5, Operand(r6, LSR, r9));
 
         __ bind(&sign);
-        __ teq(r7, Operand(0, RelocInfo::NONE));
-        __ rsb(r5, r5, Operand(0, RelocInfo::NONE), LeaveCC, ne);
+        __ teq(r7, Operand::Zero());
+        __ rsb(r5, r5, Operand::Zero(), LeaveCC, ne);
 
         __ bind(&done);
         switch (elements_kind) {