cmd/compile: intrinsify runtime/internal/sys.Ctz{32,64} on ppc64

These functions are identical to math/bits.TrailingZeros{32,64}, which
are already intrinsified on ppc64.

Change-Id: If7ee57e7afe53154874f4b66bacdb6237806128a
Reviewed-on: https://go-review.googlesource.com/70350
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>

diff --git a/src/cmd/compile/internal/gc/ssa.go b/src/cmd/compile/internal/gc/ssa.go
index 69ed613412ea16f55c64c44120b7d056a3abde53..39e06a62b242537041c50c5a0a34d37ffb724fed 100644 (file)
--- a/src/cmd/compile/internal/gc/ssa.go
+++ b/src/cmd/compile/internal/gc/ssa.go
@@ -2652,12 +2652,12 @@ func init() {
                func(s *state, n *Node, args []*ssa.Value) *ssa.Value {
                        return s.newValue1(ssa.OpCtz32, types.Types[TINT], args[0])
                },
-               sys.AMD64, sys.ARM64, sys.ARM, sys.S390X, sys.MIPS)
+               sys.AMD64, sys.ARM64, sys.ARM, sys.S390X, sys.MIPS, sys.PPC64)
        addF("runtime/internal/sys", "Ctz64",
                func(s *state, n *Node, args []*ssa.Value) *ssa.Value {
                        return s.newValue1(ssa.OpCtz64, types.Types[TINT], args[0])
                },
-               sys.AMD64, sys.ARM64, sys.ARM, sys.S390X, sys.MIPS)
+               sys.AMD64, sys.ARM64, sys.ARM, sys.S390X, sys.MIPS, sys.PPC64)
        addF("runtime/internal/sys", "Bswap32",
                func(s *state, n *Node, args []*ssa.Value) *ssa.Value {
                        return s.newValue1(ssa.OpBswap32, types.Types[TUINT32], args[0])