Add support for Embedded Constant Pools for PPC and Arm

src/ppc/full-codegen-ppc.cc

Index: src/ppc/full-codegen-ppc.cc
diff --git a/src/ppc/full-codegen-ppc.cc b/src/ppc/full-codegen-ppc.cc
index fc65863deb62cfc5405082c785a1ca57381fc95e..d9c0478ec2fe25225b46f5ceb5dd8e4f2ebaa7ed 100644
--- a/src/ppc/full-codegen-ppc.cc
+++ b/src/ppc/full-codegen-ppc.cc
@@ -400,6 +400,10 @@ void FullCodeGenerator::Generate() {
     __ LoadRoot(r3, Heap::kUndefinedValueRootIndex);
   }
   EmitReturnSequence();
+
+  if (HasStackOverflow()) {
+    masm_->AbortConstantPoolBuilding();
+  }
 }
 
 
@@ -440,6 +444,7 @@ void FullCodeGenerator::EmitBackEdgeBookkeeping(IterationStatement* stmt,
   EmitProfilingCounterDecrement(weight);
   {
     Assembler::BlockTrampolinePoolScope block_trampoline_pool(masm_);
+    Assembler::BlockConstantPoolEntrySharingScope prevent_entry_sharing(masm_);
     // BackEdgeTable::PatchAt manipulates this sequence.
     __ cmpi(r6, Operand::Zero());
     __ bc_short(ge, &ok);
@@ -512,7 +517,7 @@ void FullCodeGenerator::EmitReturnSequence() {
       // With 64bit we may need nop() instructions to ensure we have
       // enough space to SetDebugBreakAtReturn()
       if (is_int16(sp_delta)) {
-        masm_->nop();
+        if (!FLAG_enable_embedded_constant_pool) masm_->nop();
         masm_->nop();
       }
 #endif
@@ -2317,6 +2322,10 @@ void FullCodeGenerator::EmitGeneratorResume(
     __ bne(&slow_resume, cr0);
     __ LoadP(ip, FieldMemOperand(r7, JSFunction::kCodeEntryOffset));
     {
+      ConstantPoolUnavailableScope constant_pool_unavailable(masm_);
+      if (FLAG_enable_embedded_constant_pool) {
+        __ LoadConstantPoolPointerRegisterFromCodeTargetAddress(ip);
+      }
       __ LoadP(r5, FieldMemOperand(r4, JSGeneratorObject::kContinuationOffset));
       __ SmiUntag(r5);
       __ add(ip, ip, r5);