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| author | Keith Randall <khr@golang.org> | 2021-05-03 08:55:57 -0700 |
|---|---|---|
| committer | Keith Randall <khr@golang.org> | 2021-05-04 14:38:36 +0000 |
| commit | 5e4f9b077f27c79a69677b7c15dbfd157b1698a4 (patch) | |
| tree | 146229d615286824b1fddef1a12d17af8a3f093c /src/database/sql | |
| parent | 0921211403731b5a8a38e2d2c647c288240e5b29 (diff) | |
| download | go-5e4f9b077f27c79a69677b7c15dbfd157b1698a4.tar.xz | |
cmd/compile: when compiling with -N, avoid entry block
Lots of constant SSA values we put in the entry block so that
CSE can easily combine them. With -N, however, we don't run CSE, so
putting values in the entry block only serves to extend their lifetime
for no benefit.
Fixes #45897. The number of live SSA values per block goes from >5K to 22.
Memory use goes from ~3GB to ~400MB.
Change-Id: I620b423611790a900e0d4cd270eac5dbdddf2a2b
Reviewed-on: https://go-review.googlesource.com/c/go/+/316369
Trust: Keith Randall <khr@golang.org>
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Diffstat (limited to 'src/database/sql')
0 files changed, 0 insertions, 0 deletions