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[optimizing compiler] x86 goodness
Implement the x86 version of
https://android-review.googlesource.com/#/c/129560/, which made some
enhancements to x86_64 code.
- Use leal to implement 3 operand adds
- Use testl rather than cmpl to 0 for registers
- Use leaq for x86_64 for adds with constant in int32_t range
Note:
- The range and register allocator tests seem quite fragile. I had to
change ADD_INT_LIT8 to XOR_INT_LIT8 for the register allocator test to
get the code to run. It seems like this is a bit hard-coded to
expected code generation sequences. I also changes BuildTwoAdds to
BuildTwoSubs for the same reason.
- For the live range test, I just changed the expected output, as the
Locations were different.
Change-Id: I402f2e95ddc8be4eb0befb3dae1b29feadfa29ab
Signed-off-by: Mark Mendell <mark.p.mendell@intel.com>