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

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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>
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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
* `cmd/compile/internal/deadcode` (dead code elimination)
* `cmd/compile/internal/inline` (function call inlining)
* `cmd/compile/internal/devirtualize` (devirtualization of known interface method calls)
* `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
inlining, and escape analysis.
The early dead code elimination pass is integrated into the unified IR writer phase.
### 5. Walk
* `cmd/compile/internal/walk` (order of evaluation, desugaring)