Add movw and movt support for ARMv7. This includes some code from...

src/arm/assembler-arm.h

Index: src/arm/assembler-arm.h
===================================================================
--- src/arm/assembler-arm.h	(revision 4906)
+++ src/arm/assembler-arm.h	(working copy)
@@ -548,6 +548,12 @@
 extern const Instr kMovMvnPattern;
 extern const Instr kMovMvnFlip;
 
+extern const Instr kMovLeaveCCMask;
+extern const Instr kMovLeaveCCPattern;
+extern const Instr kMovwMask;
+extern const Instr kMovwPattern;
+extern const Instr kMovwLeaveCCFlip;
+
 extern const Instr kCmpCmnMask;
 extern const Instr kCmpCmnPattern;
 extern const Instr kCmpCmnFlip;
@@ -775,6 +781,9 @@
     mov(dst, Operand(src), s, cond);
   }
 
+  // Movw is just mov with the relevant immediate.

[Søren Thygesen Gjesse, 2010/06/21 21:39:26]

We don't need movw which just asserts a 16-bit immediate and calls mov, to
ensure only one instruction is generated?

+  void movt(Register reg, uint32_t immediate, Condition cond = al);
+
   void bic(Register dst, Register src1, const Operand& src2,
            SBit s = LeaveCC, Condition cond = al);