[committed] Fix RISC-V test after recent vectorizer changes

[Jeffrey Law]

Richi's patch to fix costing of permuted contiguous loads changed the 
code generation for pr122445.c in the testsuite.  After reviewing the 
code, it looks clearly better to me -- essentially covering 2X as many 
elements per vector op with fewer total vector ops in the end (without 
resulting to LMUL > 1).

I've verified this fixes the overnight regressions seen on 
riscv{32,64}-elf.  The bootstrap and regression tests are in flight, but 
won't finish for many more hours.

Pushing to the trunk momentarily.

jeffcommit 166a776b590eeed1282e65ce0b4b489d780ee0be
Author: Jeff Law <jeffrey....@oss.qualcomm.com>
Date:   Thu Jan 15 12:49:55 2026 -0700

    Fix RISC-V test after recent vectorizer changes
    
    Richi's patch to fix costing of permuted contiguous loads changed the code
    generation for pr122445.c in the testsuite.  After reviewing the code, it 
looks
    clearly better to me -- essentially covering 2X as many elements per vector 
op
    with fewer total vector ops in the end (without resulting to LMUL > 1).
    
    I've verified this fixes the overnight regressions seen on riscv{32,64}-elf.
    The bootstrap and regression tests are in flight, but won't finish for many
    more hours.
    
    gcc/testsuite
            * gcc.target/riscv/rvv/autovec/pr122445.c: Adjust expected output.

diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/pr122445.c 
b/gcc/testsuite/gcc.target/riscv/rvv/autovec/pr122445.c
index 47368684faa..cd046647656 100644
--- a/gcc/testsuite/gcc.target/riscv/rvv/autovec/pr122445.c
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/pr122445.c
@@ -22,5 +22,5 @@ x264_add4x4_idct (uint8_t *p_dst, int16_t d[16])
     }
 }
 
-/* { dg-final { scan-rtl-dump "Propagating AVL: \\(const_int 4" "avlprop" } } 
*/
+/* { dg-final { scan-rtl-dump "Propagating AVL: \\(const_int 8" "avlprop" } } 
*/
 /* { dg-final { scan-rtl-dump-not "Propagating AVL: \\(const_int 1" "avlprop" 
} } */