cmd/compile/internal/ssa: fix endless compile loop on AMD64 We currently rewrite (TESTQ (MOVQconst [c] x)) into (TESTQconst [c] x) and (TESTQconst [-1] x) into (TESTQ x x) if x is a (MOVQconst [-1]) we will be stuck in the endless rewrite loop. Don't perform the rewrite in such cases. Fixes #25006 Change-Id: I77f561ba2605fc104f1e5d5c57f32e9d67a2c000 Reviewed-on: https://go-review.googlesource.com/108879 Run-TryBot: Ilya Tocar <ilya.tocar@intel.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org>
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