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| author | Youlin Feng <fengyoulin@live.com> | 2024-11-15 00:13:34 +0800 |
|---|---|---|
| committer | Gopher Robot <gobot@golang.org> | 2024-11-22 00:12:03 +0000 |
| commit | c4e6ab9750e9d673a29203a9f41a517bcdc7a64c (patch) | |
| tree | ff364da7a24bf8234c9900ab33c2cb076f6eabb7 /test/codegen | |
| parent | 0edea47f264a4185d78e00e1e9e977d99f5c997b (diff) | |
| download | go-c4e6ab9750e9d673a29203a9f41a517bcdc7a64c.tar.xz | |
cmd/compile: modify CSE to remove redundant OpLocalAddrs
Remove the OpLocalAddrs that are unnecessary in the CSE pass, so the
following passes like DSE and memcombine can do its work better.
Fixes #70300
Change-Id: I600025d49eeadb3ca4f092d614428399750f69bc
Reviewed-on: https://go-review.googlesource.com/c/go/+/628075
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: David Chase <drchase@google.com>
Auto-Submit: David Chase <drchase@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Keith Randall <khr@golang.org>
Diffstat (limited to 'test/codegen')
| -rw-r--r-- | test/codegen/memcombine.go | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/test/codegen/memcombine.go b/test/codegen/memcombine.go index ed319d17db..e1cae0e469 100644 --- a/test/codegen/memcombine.go +++ b/test/codegen/memcombine.go @@ -944,3 +944,29 @@ func issue66413(p *struct { p.c = true p.d = 12 } + +func issue70300(v uint64) (b [8]byte) { + // amd64:"MOVQ",-"MOVB" + b[0] = byte(v) + b[1] = byte(v >> 8) + b[2] = byte(v >> 16) + b[3] = byte(v >> 24) + b[4] = byte(v >> 32) + b[5] = byte(v >> 40) + b[6] = byte(v >> 48) + b[7] = byte(v >> 56) + return b +} + +func issue70300Reverse(v uint64) (b [8]byte) { + // amd64:"MOVQ",-"MOVB" + b[7] = byte(v >> 56) + b[6] = byte(v >> 48) + b[5] = byte(v >> 40) + b[4] = byte(v >> 32) + b[3] = byte(v >> 24) + b[2] = byte(v >> 16) + b[1] = byte(v >> 8) + b[0] = byte(v) + return b +} |