[committed][RISC-V][PR target/115375] Fix expected dump output

[Jeff Law]

Several months ago changes were made to the vectorizer which mucked up 
several of the scan tests.  All but one of the cases in pr115375 have 
since been fixed.

The remaining failure seems to be primarily a debugging dump issue -- 
we're still selecting the same lmul values.  This patch adjusts the dump 
scan appropriately.

Pushing to the trunk.

Jeffcommit d369ddca549b5ff7d868b8f5ee139835b1f9382a
Author: Jeff Law <j...@ventanamicro.com>
Date:   Mon Dec 30 23:40:58 2024 -0700

    [RISC-V][PR target/115375] Fix expected dump output
    
    Several months ago changes were made to the vectorizer which mucked up 
several
    of the scan tests.  All but one of the cases in pr115375 have since been 
fixed.
    
    The remaining failure seems to be primarily a debugging dump issue -- we're
    still selecting the same lmul values.  This patch adjusts the dump scan
    appropriately.
    
            PR target/115375
    
    gcc/testsuite
    
            * gcc.dg/vect/costmodel/riscv/rvv/dynamic-lmul8-9.c: Adjust expected
            output.

diff --git a/gcc/testsuite/gcc.dg/vect/costmodel/riscv/rvv/dynamic-lmul8-9.c 
b/gcc/testsuite/gcc.dg/vect/costmodel/riscv/rvv/dynamic-lmul8-9.c
index f045f857cc3..793d16418bf 100644
--- a/gcc/testsuite/gcc.dg/vect/costmodel/riscv/rvv/dynamic-lmul8-9.c
+++ b/gcc/testsuite/gcc.dg/vect/costmodel/riscv/rvv/dynamic-lmul8-9.c
@@ -14,6 +14,6 @@ foo (int64_t *__restrict a, int64_t init, int n)
 /* { dg-final { scan-assembler {e64,m8} } } */
 /* { dg-final { scan-assembler-not {csrr} } } */
 /* { dg-final { scan-tree-dump-not "Preferring smaller LMUL loop because it 
has unexpected spills" "vect" } } */
-/* { dg-final { scan-tree-dump-times "Maximum lmul = 8" 2 "vect" } } */
+/* { dg-final { scan-tree-dump-times "Maximum lmul = 8" 1 "vect" } } */
 /* { dg-final { scan-tree-dump-times "Maximum lmul = 4" 1 "vect" } } */
 /* { dg-final { scan-tree-dump-times "Maximum lmul = 2" 1 "vect" } } */