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The load and test instructions compare the given value against zero and will produce a condition code indicating one of the following scenarios: 0: Result is zero 1: Result is less than zero 2: Result is greater than zero 3: Result is not a number (NaN) The instruction can be used to simplify floating point comparisons against zero, which can enable further optimizations. This CL also reduces the size of .text section of math.test binary by around 0.7 KB (in hexadecimal, from 1358f0 to 135620). Change-Id: I33cb714f0c6feebac7a1c46dfcc735e7daceff9c Reviewed-on: https://go-review.googlesource.com/c/go/+/209159 Reviewed-by: Michael Munday <mike.munday@ibm.com> Run-TryBot: Michael Munday <mike.munday@ibm.com> TryBot-Result: Gobot Gobot <gobot@golang.org> |
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The Go Programming Language
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