8a317ebc0f
We shouldn't mask to desired registers if we haven't masked out all the forbidden registers yet. In this path we haven't masked out the nospill registers yet. If the resulting mask contains only nospill registers, then allocReg fails. This can only happen on resultNotInArgs-marked instructions, which exist only on the ARM64, MIPS, MIPS64, and PPC64 ports. Maybe there's a better way to handle resultNotInArgs instructions. But for 1.13, this is a low-risk fix. Fixes #33355 Change-Id: I1082f78f798d1371bde65c58cc265540480e4fa4 Reviewed-on: https://go-review.googlesource.com/c/go/+/188178 Run-TryBot: Keith Randall <khr@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: David Chase <drchase@google.com> |
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