]> Cypherpunks repositories - gostls13.git/commit
cmd/compile: cleanup isUnsignedPowerOfTwo
authorJorropo <jorropo.pgm@gmail.com>
Thu, 4 Dec 2025 05:46:19 +0000 (06:46 +0100)
committerJorropo <jorropo.pgm@gmail.com>
Fri, 23 Jan 2026 20:04:51 +0000 (12:04 -0800)
commit82ef9f5b2130cb4cc88c52c68b7bd45764ab2200
treeaf046d5b6cc8c29a60bed5dfc4f089f7df4d863c
parent3443ae086314e8cb7994166a5b63a8ab056b6c44
cmd/compile: cleanup isUnsignedPowerOfTwo

Merge the signed and unsigned generic functions.
The only implementation difference between the two is:
n > 0 vs n != 0 check.

For unsigned numbers n > 0 == n != 0 and we infact optimize
the first to the second.

Change-Id: Ia2f6c3e3d4eb098d98f85e06dc2e81baa60bad4e
Reviewed-on: https://go-review.googlesource.com/c/go/+/726720
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Carlos Amedee <carlos@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
src/cmd/compile/internal/ssa/_gen/AMD64.rules
src/cmd/compile/internal/ssa/_gen/MIPS.rules
src/cmd/compile/internal/ssa/_gen/generic.rules
src/cmd/compile/internal/ssa/prove.go
src/cmd/compile/internal/ssa/rewrite.go
src/cmd/compile/internal/ssa/rewriteAMD64.go
src/cmd/compile/internal/ssa/rewriteMIPS.go
src/cmd/compile/internal/ssa/rewritegeneric.go