Add missing literal pool guards.

BUG=V8:2095
TEST=see issue

Review URL: https://chromiumcodereview.appspot.com/10233006
Patch from Rodolph Perfetta <rodolph.perfetta@gmail.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11447 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/arm/full-codegen-arm.cc

@@ -70,6 +70,7 @@ class JumpPatchSite BASE_EMBEDDED {
   // the inlined smi code.
   void EmitJumpIfNotSmi(Register reg, Label* target) {
     ASSERT(!patch_site_.is_bound() && !info_emitted_);
+    Assembler::BlockConstPoolScope block_const_pool(masm_);
     __ bind(&patch_site_);
     __ cmp(reg, Operand(reg));
     // Don't use b(al, ...) as that might emit the constant pool right after the
@@ -82,6 +83,7 @@ class JumpPatchSite BASE_EMBEDDED {
   // the inlined smi code.
   void EmitJumpIfSmi(Register reg, Label* target) {
     ASSERT(!patch_site_.is_bound() && !info_emitted_);
+    Assembler::BlockConstPoolScope block_const_pool(masm_);
     __ bind(&patch_site_);
     __ cmp(reg, Operand(reg));
     __ b(ne, target);  // Never taken before patched.