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cmd/compile: add MakeTuple generic SSA op to remove duplicate Select[01] rules

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Change-Id: Id94a5e503f02aa29dc1e334b521770107d4261db
Reviewed-on: https://go-review.googlesource.com/c/go/+/656615
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: David Chase <drchase@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Jorropo <jorropo.pgm@gmail.com>
This commit is contained in:
Jorropo 2025-03-11 09:52:10 +01:00
parent 99411d7847
commit 4ff70cf868
4 changed files with 136 additions and 180 deletions
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1
src/cmd/compile/internal/ssa/_gen/genericOps.go
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@ -585,6 +585,7 @@ var genericOps = []opData{
// pseudo-ops for breaking Tuple
{name: "Select0", argLength: 1, zeroWidth: true}, // the first component of a tuple
{name: "Select1", argLength: 1, zeroWidth: true}, // the second component of a tuple
{name: "MakeTuple", argLength: 2}, // arg0 arg1 are components of a "Tuple" (like the result from a 128bits op).
{name: "SelectN", argLength: 1, aux: "Int64"}, // arg0=result, auxint=field index. Returns the auxint'th member.
{name: "SelectNAddr", argLength: 1, aux: "Int64"}, // arg0=result, auxint=field index. Returns the address of auxint'th member. Used for un-SSA-able result types.
{name: "MakeResult", argLength: -1}, // arg0 .. are components of a "Result" (like the result from a Call). The last arg should be memory (like the result from a call).