[gcc r12-829] testsuite/arm: Improve mve-vshr.c

[gcc r12-829] testsuite/arm: Improve mve-vshr.c

[Christophe Lyon]

https://gcc.gnu.org/g:e87d568e9e3e331e22850127308abedd0642e5e8

commit r12-829-ge87d568e9e3e331e22850127308abedd0642e5e8
Author: Christophe Lyon <christophe.lyon@linaro.org>
Date:   Mon May 17 11:57:30 2021 +0000

    testsuite/arm: Improve mve-vshr.c
    
    Vector right shifts by immediate use vshr, while right shifts by
    vectors instead use vneg and vshl.
    
    This patch adds the corresponding scan-assembler-times that were
    missing.
    
    2021-05-17  Christophe Lyon  <christophe.lyon@linaro.org>
    
            gcc/testsuite/
            * gcc.target/arm/simd/mve-vshr.c: Add more scan-assembler-times.

Diff:
---
 gcc/testsuite/gcc.target/arm/simd/mve-vshr.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/gcc/testsuite/gcc.target/arm/simd/mve-vshr.c b/gcc/testsuite/gcc.target/arm/simd/mve-vshr.c
index d4e658c2c4e..d4258e9fefe 100644
--- a/gcc/testsuite/gcc.target/arm/simd/mve-vshr.c
+++ b/gcc/testsuite/gcc.target/arm/simd/mve-vshr.c
@@ -55,5 +55,12 @@ FUNC_IMM(u, uint, 8, 16, >>, vshrimm)
 
 /* MVE has only 128-bit vectors, so we can vectorize only half of the
    functions above.  */
+/* Vector right shifts use vneg and left shifts.  */
+/* { dg-final { scan-assembler-times {vshl.s[0-9]+\tq[0-9]+, q[0-9]+} 3 } } */
+/* { dg-final { scan-assembler-times {vshl.u[0-9]+\tq[0-9]+, q[0-9]+} 3 } } */
+/* { dg-final { scan-assembler-times {vneg.s[0-9]+  q[0-9]+, q[0-9]+} 6 } } */
+
+
+/* Shift by immediate.  */
 /* { dg-final { scan-assembler-times {vshr.s[0-9]+\tq[0-9]+, q[0-9]+} 3 } } */
 /* { dg-final { scan-assembler-times {vshr.u[0-9]+\tq[0-9]+, q[0-9]+} 3 } } */