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| author | Xiaolin Zhao <zhaoxiaolin@loongson.cn> | 2026-01-15 16:30:30 +0800 |
|---|---|---|
| committer | abner chenc <chenguoqi@loongson.cn> | 2026-01-29 16:48:45 -0800 |
| commit | 5aa006dee0fae19cea85843cb0c83636a3181e0e (patch) | |
| tree | 42c47029044d84c8cc1c434a86f6cae5d6bbb6c9 | |
| parent | bae9486d07706bcc216961f504e75d1fb5c5aec8 (diff) | |
| download | go-5aa006dee0fae19cea85843cb0c83636a3181e0e.tar.xz | |
test/codegen: add bitwise operation combination tests
This commit adds two test functions, bitsOptXor1 and bitsOptXor2,
to verify that the compiler correctly optimizes certain bitwise
expression patterns in future CLs.
Change-Id: Idf5bd1ff8653f8fa218604d857639e063546d8e7
Reviewed-on: https://go-review.googlesource.com/c/go/+/736540
Reviewed-by: Carlos Amedee <carlos@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
| -rw-r--r-- | test/codegen/bits.go | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/test/codegen/bits.go b/test/codegen/bits.go index d9c567b078..98489e3211 100644 --- a/test/codegen/bits.go +++ b/test/codegen/bits.go @@ -563,3 +563,15 @@ func bitsRotateAndMask(io64 [8]uint64, io32 [4]uint32, io16 [4]uint16, io8 [4]ui // ppc64x: "ANDCC [$]120" io8[0] = io8[0] & uint8(bigc) } + +func bitsOpXor1(x, y uint32) uint32 { + // arm64: "ORR" "AND" "BIC" + // loong64: "OR " "AND " "ANDN" + return (x | y) &^ (x & y) +} + +func bitsOpXor2(x, y uint32) uint32 { + // arm64: "BIC" "ORR" + // loong64: "ANDN" "OR " + return (x &^ y) | (^x & y) +} |