[gcc r12-3191] Update comments in float128-call.c test.

[gcc r12-3191] Update comments in float128-call.c test.

[Michael Meissner]

https://gcc.gnu.org/g:10c834f976c349970ee4b8eb3b4fce140972f256

commit r12-3191-g10c834f976c349970ee4b8eb3b4fce140972f256
Author: Michael Meissner <meissner@linux.ibm.com>
Date:   Fri Aug 27 16:07:50 2021 -0400

    Update comments in float128-call.c test.
    
    Segher asked that I update the comments to include the d-form vector stores
    (even though they wouldn't be generated by this test).
    
    2021-08-25  Michael Meissner  <meissner@linux.ibm.com>
    
    gcc/testsuite/
            * gcc.target/powerpc/float128-call.c: Update comments.

Diff:
---
 gcc/testsuite/gcc.target/powerpc/float128-call.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/gcc/testsuite/gcc.target/powerpc/float128-call.c b/gcc/testsuite/gcc.target/powerpc/float128-call.c
index 44b242b5dc6..cf7ec0806d2 100644
--- a/gcc/testsuite/gcc.target/powerpc/float128-call.c
+++ b/gcc/testsuite/gcc.target/powerpc/float128-call.c
@@ -27,12 +27,14 @@ void store (TYPE a, TYPE *p) { *p = a; }
 
 	lxvd2x	-- big endian power7/power8, little endian power8
 	lvx	-- Altivec
-	lxv	-- power9
-	plxv	-- power10
-	lxvx	-- X-form variant.
+	lxv	-- D-form power9
+	lxvx	-- X-form power9
+	plxv	-- prefixed power10
 	stxvd2x	-- big endian power7/power8, little endian power8
 	stvx	-- Altivec
-	stxvx	-- power9/power10.  */
+	stxvx	-- X-form vector store (power9/power10).
+	stv	-- D-form vector store (power9 and above).
+	pstv	-- prefixed vector store (power10 and above).  */
 
 /* { dg-final { scan-assembler {\mlxvd2x 34\M|\mlvx 2\M|\mp?lxvx? 34\M} } } */
-/* { dg-final { scan-assembler {\mstxvd2x 34\M|\mstvx 2\M|\mstxvx 34\M} } } */
+/* { dg-final { scan-assembler {\mstxvd2x 34\M|\mstvx 2\M|\mp?stxvx? 34\M} } } */