ARM native regexps.

src/arm/codegen-arm.cc

Index: src/arm/codegen-arm.cc
diff --git a/src/arm/codegen-arm.cc b/src/arm/codegen-arm.cc
index 5c8b777005731daf3ac39869f8e334a14a076167..59b947a9c4bfefa7f42c5f2f831a79f6be2cf78d 100644
--- a/src/arm/codegen-arm.cc
+++ b/src/arm/codegen-arm.cc
@@ -5673,9 +5673,9 @@ void UnarySubStub::Generate(MacroAssembler* masm) {
     __ str(r2, FieldMemOperand(r0, HeapNumber::kExponentOffset));
   } else {
     AllocateHeapNumber(masm, &slow, r1, r2, r3);
-    __ ldr(r2, FieldMemOperand(r0, HeapNumber::kMantissaOffset));
-    __ str(r2, FieldMemOperand(r1, HeapNumber::kMantissaOffset));
+    __ ldr(r3, FieldMemOperand(r0, HeapNumber::kMantissaOffset));
     __ ldr(r2, FieldMemOperand(r0, HeapNumber::kExponentOffset));
+    __ str(r3, FieldMemOperand(r1, HeapNumber::kMantissaOffset));
     __ eor(r2, r2, Operand(HeapNumber::kSignMask));  // Flip sign.
     __ str(r2, FieldMemOperand(r1, HeapNumber::kExponentOffset));
     __ mov(r0, Operand(r1));