9a19481acb
Current many architectures use a rule along the lines of // Canonicalize the order of arguments to comparisons - helps with CSE. ((CMP|CMPW) x y) && x.ID > y.ID => (InvertFlags ((CMP|CMPW) y x)) to normalize comparisons as much as possible for CSE. Replace the ID comparison with something less variable across compiler changes. This helps avoid spurious failures in some of the codegen-comparison tests (though the current choice of comparison is sensitive to Op ordering). Two tests changed to accommodate modified instruction choice. Change-Id: Ib35f450bd2bae9d4f9f7838ceaf7ec682bcf1e1a Reviewed-on: https://go-review.googlesource.com/c/go/+/280155 Trust: David Chase <drchase@google.com> Run-TryBot: David Chase <drchase@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> |
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