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A Select Op could produce a value with upper 32 bits NOT zeroed, for example, Div32 is lowered to (Select0 (DIVL x y)). In theory, we could look into the argument of a Select to decide whether the upper bits are zeroed. As it is late in release cycle, just disable this optimization for Select for now. Fixes #23305. Change-Id: Icf665a2af9ccb0a7ba0ae00c683c9e349638bf85 Reviewed-on: https://go-review.googlesource.com/85736 Run-TryBot: Cherry Zhang <cherryyz@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com> Reviewed-by: Ilya Tocar <ilya.tocar@intel.com> |
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