RISC-V: Adapt live-1.c testcase

Commited.

Fix failures:

FAIL: gcc.target/riscv/rvv/autovec/partial/live-1.c scan-tree-dump-times optimized ".VEC_EXTRACT" 10
FAIL: gcc.target/riscv/rvv/autovec/partial/live-1.c scan-tree-dump-times optimized ".VEC_EXTRACT" 10

gcc/testsuite/ChangeLog:

	* gcc.target/riscv/rvv/autovec/partial/live-1.c: Adapt test.

Author: zhongjuzhe

gcc/testsuite/gcc.target/riscv/rvv/autovec/partial/live-1.c

@@ -1,5 +1,5 @@
 /* { dg-do compile } */
-/* { dg-additional-options "-march=rv32gcv -mabi=ilp32d --param riscv-autovec-preference=scalable -fdump-tree-optimized-details" } */
+/* { dg-additional-options "-march=rv32gcv_zvfh -mabi=ilp32d -fno-vect-cost-model --param riscv-autovec-preference=scalable -fdump-tree-optimized-details" } */
 
 #include <stdint-gcc.h>
 
@@ -31,4 +31,4 @@
 
 TEST_ALL (EXTRACT_LAST)
 
-/* { dg-final { scan-tree-dump-times "\.VEC_EXTRACT" 10 "optimized" } } */
+/* { dg-final { scan-tree-dump-times "\.VEC_EXTRACT" 11 "optimized" } } */