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| author | thepudds <thepudds1460@gmail.com> | 2025-06-28 16:53:37 -0400 |
|---|---|---|
| committer | t hepudds <thepudds1460@gmail.com> | 2025-06-30 14:01:43 -0700 |
| commit | e46d586eddfdd2186d77a5e996bbd6415cfcf2f5 (patch) | |
| tree | 3716f626bb9739fd23519a49da3869424e76a444 /src/cmd/compile/internal/base/debug.go | |
| parent | 479b51ee1f78a884a45b517c1e993d91c9774e29 (diff) | |
| download | go-e46d586eddfdd2186d77a5e996bbd6415cfcf2f5.tar.xz | |
cmd/compile/internal/escape: add debug hash for literal allocation optimizations
Several CLs earlier in this stack added optimizations to reduce
user allocations by recognizing and taking advantage of literals,
including CL 649555, CL 649079, and CL 649035.
This CL adds debug hashing of those changes, which enables use of the
bisect tool, such as 'bisect -compile=literalalloc go test -run=Foo'.
This also allows these optimizations to be manually disabled via
'-gcflags=all=-d=literalallochash=n'.
Updates #71359
Change-Id: I854f7742a6efa5b17d914932d61a32b2297f0c88
Reviewed-on: https://go-review.googlesource.com/c/go/+/675415
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Diffstat (limited to 'src/cmd/compile/internal/base/debug.go')
| -rw-r--r-- | src/cmd/compile/internal/base/debug.go | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/cmd/compile/internal/base/debug.go b/src/cmd/compile/internal/base/debug.go index 10393e773c..85873dcc40 100644 --- a/src/cmd/compile/internal/base/debug.go +++ b/src/cmd/compile/internal/base/debug.go @@ -40,6 +40,7 @@ type DebugFlags struct { InlFuncsWithClosures int `help:"allow functions with closures to be inlined" concurrent:"ok"` InlStaticInit int `help:"allow static initialization of inlined calls" concurrent:"ok"` Libfuzzer int `help:"enable coverage instrumentation for libfuzzer"` + LiteralAllocHash string `help:"hash value for use in debugging literal allocation optimizations" concurrent:"ok"` LoopVar int `help:"shared (0, default), 1 (private loop variables), 2, private + log"` LoopVarHash string `help:"for debugging changes in loop behavior. Overrides experiment and loopvar flag."` LocationLists int `help:"print information about DWARF location list creation"` |