Generate inline code for contextual loads on ARM....

src/arm/assembler-arm.cc

Index: src/arm/assembler-arm.cc
===================================================================
--- src/arm/assembler-arm.cc	(revision 5854)
+++ src/arm/assembler-arm.cc	(working copy)
@@ -397,7 +397,7 @@
 }
 
 
-bool Assembler::IsNop(Instr instr, int type) {
+bool Assembler::IsNop(Instr instr, NopMarkerTypes type) {
   // Check for mov rx, rx.
   ASSERT(0 <= type && type <= 14);  // mov pc, pc is not a nop.
   return instr == (al | 13*B21 | type*B12 | type);
@@ -510,6 +510,13 @@
 }
 
 
+bool Assembler::IsLdrPcImmediateOffset(Instr instr) {
+  // Check the instruction is indeed a
+  // ldr<cond> <Rd>, [pc +/- offset_12].
+  return (instr & 0x0f7f0000) == 0x051f0000;
+}
+
+
 // Labels refer to positions in the (to be) generated code.
 // There are bound, linked, and unused labels.
 //
@@ -1113,8 +1120,8 @@
     positions_recorder()->WriteRecordedPositions();
   }
   // Don't allow nop instructions in the form mov rn, rn to be generated using
-  // the mov instruction. They must be generated using nop(int)
-  // pseudo instructions.
+  // the mov instruction. They must be generated using nop(NopMarkerTypes) or
+  // MarkCode(NopMarkerTypes) pseudo instructions.
   ASSERT(!(src.is_reg() && src.rm().is(dst) && s == LeaveCC && cond == al));
   addrmod1(cond | 13*B21 | s, r0, dst, src);
 }
@@ -2369,7 +2376,7 @@
 
 
 // Pseudo instructions.
-void Assembler::nop(int type) {
+void Assembler::nop(NopMarkerTypes type) {
   // This is mov rx, rx.
   ASSERT(0 <= type && type <= 14);  // mov pc, pc is not a nop.
   emit(al | 13*B21 | type*B12 | type);