5f7abeca5a
Temporary registers are sometimes needed for an architecture backend which needs to use several machine instructions to implement a single SSA instruction. Mark such instructions so that regalloc can reserve the temporary register for it. That way we don't have to reserve a fixed register like we do now. Convert the temp-register-using instructions on amd64 to use this new mechanism. Other archs can follow as needed. Change-Id: I1d0c8588afdad5cd18b4398eb5a0f755be5dead7 Reviewed-on: https://go-review.googlesource.com/c/go/+/398556 TryBot-Result: Gopher Robot <gobot@golang.org> Run-TryBot: Keith Randall <khr@golang.org> Reviewed-by: Cherry Mui <cherryyz@google.com> Reviewed-by: David Chase <drchase@google.com> |
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