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cmd/compile: update README to reflect dead code elimination changes 

The description of middle-end dead code elimination is inconsistent with the current implementation.

The early dead code elimination pass of IR nodes is no longer located in cmd/compile/internal/deadcode and is no longer called by gc/main.go:Main. It has been moved to the unified IR writer phase. This update modifies the README to reflect this architectural change.

Change-Id: I78bd486edefd6b02948fee7de9ce6c83b147bc1d
GitHub-Last-Rev: 76493ce8b0
GitHub-Pull-Request: golang/go#68134
Reviewed-on: https://go-review.googlesource.com/c/go/+/593638
Reviewed-by: Robert Griesemer <gri@google.com>
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Keith Randall <khr@golang.org>
This commit is contained in:
func25 2024-06-23 05:53:47 +00:00 committed by Gopher Robot
parent 68315bc8ce
commit b3b4556c24
1 changed files with 2 additions and 1 deletions
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src/cmd/compile/README.md
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@ -63,7 +63,6 @@ Unified IR is also involved in import/export of packages and inlining.
### 4. Middle end ### 4. Middle end
* `cmd/compile/internal/deadcode` (dead code elimination)
* `cmd/compile/internal/inline` (function call inlining) * `cmd/compile/internal/inline` (function call inlining)
* `cmd/compile/internal/devirtualize` (devirtualization of known interface method calls) * `cmd/compile/internal/devirtualize` (devirtualization of known interface method calls)
* `cmd/compile/internal/escape` (escape analysis) * `cmd/compile/internal/escape` (escape analysis)
@ -72,6 +71,8 @@ Several optimization passes are performed on the IR representation:
dead code elimination, (early) devirtualization, function call dead code elimination, (early) devirtualization, function call
inlining, and escape analysis. inlining, and escape analysis.
The early dead code elimination pass is integrated into the unified IR writer phase.
### 5. Walk ### 5. Walk
* `cmd/compile/internal/walk` (order of evaluation, desugaring) * `cmd/compile/internal/walk` (order of evaluation, desugaring)