> > > https://codereview.chromium.org/14121004/diff/1/src/arm/lithium-codegen-arm.cc > > File src/arm/lithium-codegen-arm.cc (right): > > https://codereview.chromium.org/14121004/diff/1/src/arm/lithium-codegen-arm.cc#newcode2109 > > > src/arm/lithium-codegen-arm.cc:2109<https://codereview.chromium.org/14121004/diff/1/src/arm/lithium-codegen-arm.cc#newcode2109src/arm/lithium-codegen-arm.cc:2109>: > > if (!left_reg.is(result_reg)) { > Why do we need this "if" here? > If left_reg is result_reg, "Move(result_reg, left_reg);" won't generate any code. So, it's no use to do a jump over nothing.
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