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doc: mention stack allocation of slices

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Very similar to last release's note.

Change-Id: Ie7afe21d98cee1c9718e53b20e8af8ee18504bb9
Reviewed-on: https://go-review.googlesource.com/c/go/+/725921
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Keith Randall <khr@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Keith Randall <khr@golang.org>
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Keith Randall 2025-12-02 14:22:34 -08:00 • committed by Gopher Robot
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9
doc/next/5-toolchain.md
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@ -1,5 +1,14 @@
## Compiler {#compiler} ## Compiler {#compiler}
<!-- CLs 707755, 722440 -->
The compiler can now allocate the backing store for slices on the stack in more
situations, which improves performance. If this change is causing trouble, the
[bisect tool](https://pkg.go.dev/golang.org/x/tools/cmd/bisect) can be used to
find the allocation causing trouble using the `-compile=variablemake` flag. All
such new stack allocations can also be turned off using
`-gcflags=all=-d=variablemakehash=n`.
## Assembler {#assembler} ## Assembler {#assembler}
## Linker {#linker} ## Linker {#linker}