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cmd/compile: optimize []byte(string1 + string2)

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This CL optimizes the compilation of string-to-bytes conversion in the
case of string additions.

Fixes #62407

Change-Id: Ic47df758478e5d061880620025c4ec7dbbff8a64
Reviewed-on: https://go-review.googlesource.com/c/go/+/527935
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Keith Randall <khr@golang.org>
Auto-Submit: Keith Randall <khr@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Tim King <taking@google.com>
This commit is contained in:
Paschalis Tsilias 2023-09-13 12:44:17 +03:00 • committed by Gopher Robot
parent 3da4281df1
commit fe69121bc5
8 changed files with 438 additions and 287 deletions
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5
test/codegen/strings.go
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@ -26,6 +26,11 @@ func ToByteSlice() []byte { // Issue #24698
return []byte("foo")
}
func ConvertToByteSlice(a, b, c string) []byte {
// amd64:`.*runtime.concatbyte3`
return []byte(a + b + c)
}
// Loading from read-only symbols should get transformed into constants.
func ConstantLoad() {
// 12592 = 0x3130