Add support for Embedded Constant Pools for PPC and Arm

src/compiler/ppc/code-generator-ppc.cc

Index: src/compiler/ppc/code-generator-ppc.cc
diff --git a/src/compiler/ppc/code-generator-ppc.cc b/src/compiler/ppc/code-generator-ppc.cc
index d7b038394d937df00b565316c08ecec98352f597..f4fac6daff93403497dc4ef202896e9aab0a8098 100644
--- a/src/compiler/ppc/code-generator-ppc.cc
+++ b/src/compiler/ppc/code-generator-ppc.cc
@@ -1269,8 +1269,16 @@ void CodeGenerator::AssemblePrologue() {
     int register_save_area_size = 0;
     RegList frame_saves = fp.bit();
     __ mflr(r0);
-    __ Push(r0, fp);
-    __ mr(fp, sp);
+    if (FLAG_enable_embedded_constant_pool) {
+      __ Push(r0, fp, kConstantPoolRegister);
+      // Adjust FP to point to saved FP.
+      __ subi(fp, sp, Operand(StandardFrameConstants::kConstantPoolOffset));
+      register_save_area_size += kPointerSize;
+      frame_saves |= kConstantPoolRegister.bit();
+    } else {
+      __ Push(r0, fp);
+      __ mr(fp, sp);
+    }
     // Save callee-saved registers.
     const RegList saves = descriptor->CalleeSavedRegisters() & ~frame_saves;
     for (int i = Register::kNumRegisters - 1; i >= 0; i--) {
@@ -1323,6 +1331,9 @@ void CodeGenerator::AssembleReturn() {
       }
       // Restore registers.
       RegList frame_saves = fp.bit();
+      if (FLAG_enable_embedded_constant_pool) {
+        frame_saves |= kConstantPoolRegister.bit();
+      }
       const RegList saves = descriptor->CalleeSavedRegisters() & ~frame_saves;
       if (saves != 0) {
         __ MultiPop(saves);