Generate some intrinsics using our IR.

runtime/vm/intrinsifier_x64.cc

Index: runtime/vm/intrinsifier_x64.cc
===================================================================
--- runtime/vm/intrinsifier_x64.cc	(revision 39651)
+++ runtime/vm/intrinsifier_x64.cc	(working copy)
@@ -366,45 +366,6 @@
 }
 
 
-void Intrinsifier::Uint8ArrayGetIndexed(Assembler* assembler) {
-  Label fall_through;
-  __ movq(RCX, Address(RSP, + 1 * kWordSize));  // Index.
-  __ movq(RAX, Address(RSP, + 2 * kWordSize));  // Array.
-  __ testq(RCX, Immediate(kSmiTagMask));
-  __ j(NOT_ZERO, &fall_through, Assembler::kNearJump);  // Non-smi index.
-  // Range check.
-  __ cmpq(RCX, FieldAddress(RAX, TypedData::length_offset()));
-  // Runtime throws exception.
-  __ j(ABOVE_EQUAL, &fall_through, Assembler::kNearJump);
-
-  __ SmiUntag(RCX);
-  __ movzxb(RAX, FieldAddress(RAX, RCX, TIMES_1, TypedData::data_offset()));
-  __ SmiTag(RAX);
-  __ ret();
-  __ Bind(&fall_through);
-}
-
-
-void Intrinsifier::ExternalUint8ArrayGetIndexed(Assembler* assembler) {
-  Label fall_through;
-  __ movq(RCX, Address(RSP, + 1 * kWordSize));  // Index.
-  __ movq(RAX, Address(RSP, + 2 * kWordSize));  // Array.
-  __ testq(RCX, Immediate(kSmiTagMask));
-  __ j(NOT_ZERO, &fall_through, Assembler::kNearJump);  // Non-smi index.
-  // Range check.
-  __ cmpq(RCX, FieldAddress(RAX, TypedData::length_offset()));
-  // Runtime throws exception.
-  __ j(ABOVE_EQUAL, &fall_through, Assembler::kNearJump);
-
-  __ movq(RAX, FieldAddress(RAX, ExternalTypedData::data_offset()));
-  __ SmiUntag(RCX);
-  __ movzxb(RAX, Address(RAX, RCX, TIMES_1, 0));
-  __ SmiTag(RAX);
-  __ ret();
-  __ Bind(&fall_through);
-}
-
-
 void Intrinsifier::Float64ArrayGetIndexed(Assembler* assembler) {
   Label fall_through;
   __ movq(RCX, Address(RSP, + 1 * kWordSize));  // Index.