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| author | Jorropo <jorropo.pgm@gmail.com> | 2025-12-20 14:11:35 +0100 |
|---|---|---|
| committer | Gopher Robot <gobot@golang.org> | 2026-01-23 12:24:56 -0800 |
| commit | 478d86446e88dc9e0b46e08914cb564d7c705d1e (patch) | |
| tree | 886b922658ff0511cce29dd9b3acaebab1aae534 /test/codegen | |
| parent | 8f739162e6479e98b0950ac9dc2f69cd79031be2 (diff) | |
| download | go-478d86446e88dc9e0b46e08914cb564d7c705d1e.tar.xz | |
cmd/compile: on amd64 use 32bits copies for 64bits copies of 32bits values
Fixes #76449
This saves a single byte for the REX prefix per OpCopy it triggers on.
Change-Id: I1eab364d07354555ba2f23ffd2f9c522d4a04bd0
Reviewed-on: https://go-review.googlesource.com/c/go/+/731640
Reviewed-by: Michael Pratt <mpratt@google.com>
Reviewed-by: Carlos Amedee <carlos@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
Auto-Submit: Jorropo <jorropo.pgm@gmail.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Diffstat (limited to 'test/codegen')
| -rw-r--r-- | test/codegen/constants.go | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/test/codegen/constants.go b/test/codegen/constants.go index 178a106552..9b014b54b1 100644 --- a/test/codegen/constants.go +++ b/test/codegen/constants.go @@ -33,3 +33,12 @@ func contiguousMaskConstants() (out [64]uint64) { out[3] = 0xFFFFFFFE00000001 return } + +func issue76449_1() (_, _, _ uint64) { + // amd64:-"MOVQ" + return 0, 0, 0 +} +func issue76449_2() (_, _, _ uint64) { + // amd64:-"MOVQ" + return 1, 2, 1 +} |