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[dev.regabi] cmd/compile: remove uses of dummy

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Per https://developers.google.com/style/inclusive-documentation,
since we are editing some of this code anyway and it is easier
to put the cleanup in a separate CL.

Change-Id: Ib6b851f43f9cc0a57676564477d4ff22abb1cee5
Reviewed-on: https://go-review.googlesource.com/c/go/+/273106
Trust: Russ Cox <rsc@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
This commit is contained in:
Russ Cox 2020-11-24 22:09:57 -05:00
parent 4a6b4fd139
commit 9e0e43d84d
15 changed files with 100 additions and 101 deletions
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2
src/cmd/compile/internal/ssa/regalloc.go
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@ -104,7 +104,7 @@
// If b3 is the primary predecessor of b2, then we use x3 in b2 and
// add a x4:CX->BX copy at the end of b4.
// But the definition of x3 doesn't dominate b2. We should really
// insert a dummy phi at the start of b2 (x5=phi(x3,x4):BX) to keep
// insert an extra phi at the start of b2 (x5=phi(x3,x4):BX) to keep
// SSA form. For now, we ignore this problem as remaining in strict
// SSA form isn't needed after regalloc. We'll just leave the use
// of x3 not dominated by the definition of x3, and the CX->BX copy