cmd/compile: add PPC64-specific inlining for runtime.memmove

Add rule to PPC64.rules to inline runtime.memmove in more cases, as is
done for other target architectures
Updated tests in codegen/copy.go to verify changes are done on
ppc64/ppc64le

Updates #41662

Change-Id: Id937ce21f9b4f4047b3e66dfa3c960128ee16a2a
Reviewed-on: https://go-review.googlesource.com/c/go/+/352054
Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Trust: Lynn Boger <laboger@linux.vnet.ibm.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/test/codegen/copy.go b/test/codegen/copy.go
index ea8a01f803..9b3bf75b7a 100644
--- a/test/codegen/copy.go
+++ b/test/codegen/copy.go
@@ -103,6 +103,8 @@ func moveArchLowering1(b []byte, x *[1]byte) {
 	_ = b[1]
 	// amd64:-".*memmove"
 	// arm64:-".*memmove"
+	// ppc64:-".*memmove"
+	// ppc64le:-".*memmove"
 	copy(b, x[:])
 }
 
@@ -110,6 +112,8 @@ func moveArchLowering2(b []byte, x *[2]byte) {
 	_ = b[2]
 	// amd64:-".*memmove"
 	// arm64:-".*memmove"
+	// ppc64:-".*memmove"
+	// ppc64le:-".*memmove"
 	copy(b, x[:])
 }
 
@@ -117,6 +121,8 @@ func moveArchLowering4(b []byte, x *[4]byte) {
 	_ = b[4]
 	// amd64:-".*memmove"
 	// arm64:-".*memmove"
+	// ppc64:-".*memmove"
+	// ppc64le:-".*memmove"
 	copy(b, x[:])
 }
 
@@ -124,6 +130,8 @@ func moveArchLowering8(b []byte, x *[8]byte) {
 	_ = b[8]
 	// amd64:-".*memmove"
 	// arm64:-".*memmove"
+	// ppc64:-".*memmove"
+	// ppc64le:-".*memmove"
 	copy(b, x[:])
 }