runtime/vm/intrinsifier_x64.cc - Issue 12093071: - Change the layout of external typed array objects to avoid the extra indirection when accessing e…

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Unified Diff: runtime/vm/intrinsifier_x64.cc

Issue 12093071: - Change the layout of external typed array objects to avoid the extra indirection when accessing e… (Closed) Base URL: http://dart.googlecode.com/svn/branches/bleeding_edge/dart/

Patch Set: Created 7 years, 11 months ago

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Index: runtime/vm/intrinsifier_x64.cc

===================================================================

--- runtime/vm/intrinsifier_x64.cc (revision 17875)

+++ runtime/vm/intrinsifier_x64.cc (working copy)

@@ -961,8 +961,7 @@

// R12: index as Smi.

// RAX: array.

__ SmiUntag(R12);

- __ movq(RAX, FieldAddress(RAX, ExternalUint8Array::external_data_offset()));

- __ movq(RAX, Address(RAX, ExternalByteArrayData<uint8_t>::data_offset()));

+ __ movq(RAX, FieldAddress(RAX, ExternalUint8Array::data_offset()));

__ movzxb(RAX, Address(RAX, R12, TIMES_1, 0));

__ SmiTag(RAX);

__ ret();

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