ARM: Implement ClassOf in the lithium arm backend.

ARM: Implement ClassOf in the lithium arm backend.


Committed: http://code.google.com/p/v8/source/detail?r=6271

[Søren Thygesen Gjesse, 2011-01-11 13:48:13]

LGTM with temp2 gone.

http://codereview.chromium.org/6201004/diff/1/src/arm/lithium-codegen-arm.cc
File src/arm/lithium-codegen-arm.cc (right):

http://codereview.chromium.org/6201004/diff/1/src/arm/lithium-codegen-arm.cc#...
src/arm/lithium-codegen-arm.cc:1433: ASSERT(!temp.is(temp2));  // But input and
temp2 may be the same register.
Can't we get rid of temp2 and just use the scratch register

Register scratch = scratch0;

Adn then temp2 -> scratch

http://codereview.chromium.org/6201004/diff/1/src/arm/lithium-codegen-arm.cc#...
src/arm/lithium-codegen-arm.cc:1505: Register temp =
ToRegister(instr->temporary());
Probably don't need temp2 for the instruction after all, and the the swapping is
not needed.

[Mads Ager (chromium), 2011-01-11 14:01:26]

Thanks. Removed temporary from LClassOfTest and use scratch0 in its place in
both ClassOfTest and ClassOfTestAndBranch.