2 Commits

Author	SHA1	Message	Date
Keith Randall	2acd3646fc	cmd/compile: rework induction variable detector ... Induction variable detection is still not quite right. I've added another failing test. Redo the overflow/underflow detector so it is more obviously correct. Update #53600 Fixes #53653 Fixes #53663 Change-Id: Id95228e282fdbf6bd80b26e1c41d62e935ba08ff Reviewed-on: https://go-review.googlesource.com/c/go/+/415874 Run-TryBot: Keith Randall <khr@golang.org> TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Russ Cox <rsc@golang.org> Reviewed-by: David Chase <drchase@google.com>	2022-07-06 17:00:37 +00:00
Keith Randall	31b8c23c57	cmd/compile: fix prove pass when upper condition is <= maxint ... When the terminating condition is <= X, we need to make sure that X+step doesn't overflow. Fixes #53600 Change-Id: I36e5384d05b4d7168e48db6094200fcae409bfe5 Reviewed-on: https://go-review.googlesource.com/c/go/+/415219 Reviewed-by: Than McIntosh <thanm@google.com> Run-TryBot: David Chase <drchase@google.com> Reviewed-by: David Chase <drchase@google.com> TryBot-Result: Gopher Robot <gobot@golang.org> Run-TryBot: Keith Randall <khr@golang.org>	2022-06-30 15:11:19 +00:00