go/test/codegen/issue72832.go
Junyang Shao 113b25774e cmd/compile: memcombine different size stores
This CL implements the TODO in combineStores to allow combining
stores of different sizes, as long as the total size aligns to
2, 4, 8.

Fixes #72832.

Change-Id: I6d1d471335da90d851ad8f3b5a0cf10bdcfa17c4
Reviewed-on: https://go-review.googlesource.com/c/go/+/661855
Reviewed-by: Keith Randall <khr@golang.org>
Auto-Submit: Junyang Shao <shaojunyang@google.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
Reviewed-by: Junyang Shao <shaojunyang@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2025-05-20 13:00:16 -07:00

42 lines
628 B
Go

// asmcheck
// Copyright 2025 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package codegen
type tile1 struct {
a uint16
b uint16
c uint32
}
func store_tile1(t *tile1) {
// amd64:`MOVQ`
t.a, t.b, t.c = 1, 1, 1
}
type tile2 struct {
a, b, c, d, e int8
}
func store_tile2(t *tile2) {
// amd64:`MOVW`
t.a, t.b = 1, 1
// amd64:`MOVW`
t.d, t.e = 1, 1
}
type tile3 struct {
a, b uint8
c uint16
}
func store_shifted(t *tile3, x uint32) {
// amd64:`MOVL`
t.a = uint8(x)
t.b = uint8(x >> 8)
t.c = uint16(x >> 16)
}