Out-of-line constant pool on Arm: Stage 1 - Free up r7 for use as constant pool pointer register

src/arm/macro-assembler-arm.h

Index: src/arm/macro-assembler-arm.h
diff --git a/src/arm/macro-assembler-arm.h b/src/arm/macro-assembler-arm.h
index 9abd5a0c3da381152c086379481c6e4e179e0610..7bcd405d907b8dc9dcc632fcac25724effbf7cb1 100644
--- a/src/arm/macro-assembler-arm.h
+++ b/src/arm/macro-assembler-arm.h
@@ -45,7 +45,8 @@ inline MemOperand FieldMemOperand(Register object, int offset) {
 
 
 // Give alias names to registers
-const Register cp = { 8 };  // JavaScript context pointer
+const Register pp = { 7 };  // Constant pool pointer.

[Rodolph Perfetta, 2013/09/13 14:14:40]

nit: why don't you use kRegister_r7_Code like in assembler-arm.h? It makes it
easier to look for r7 aliases.

[rmcilroy_google, 2013/09/13 14:52:58]

Done (and done for cp and kRootRegister below).

+const Register cp = { 8 };  // JavaScript context pointer.
 const Register kRootRegister = { 10 };  // Roots array pointer.
 
 // Flags used for AllocateHeapNumber