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doc: add relnote fragment on stack slot merging

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Add a blurb to the toolchain section talking about stack slot merging.

Updates #62737.

Change-Id: I26193a6a381c95ff5d79ce80b77c10c7561d00cc
Reviewed-on: https://go-review.googlesource.com/c/go/+/581439
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Austin Clements <austin@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
This commit is contained in:
Than McIntosh 2024-04-24 18:53:45 +00:00
parent 3454ac0d63
commit 0767ffdf27
1 changed files with 5 additions and 0 deletions
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doc/next/5-toolchain.md
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@ -4,6 +4,11 @@ The build time overhead to building with [Profile Guided Optimization](/doc/pgo)
Previously, large builds could see 100%+ build time increase from enabling PGO. Previously, large builds could see 100%+ build time increase from enabling PGO.
In Go 1.23, overhead should be in the single digit percentages. In Go 1.23, overhead should be in the single digit percentages.
<!-- https://go.dev/issue/62737 , https://golang.org/cl/576681, https://golang.org/cl/577615 -->
The compiler in Go 1.23 can now overlap the stack frame slots of local variables
accessed in disjoint regions of a function, which reduces stack usage
for Go applications.
## Assembler {#assembler} ## Assembler {#assembler}
## Linker {#linker} ## Linker {#linker}