RISC-V: Enable more tests of "vect" for RVV

RISC-V: Enable more tests of "vect" for RVV

This patch enables almost full coverage vectorization tests for RVV, except these
following tests (not enabled yet):

1. Will enable soon:

check_effective_target_vect_call_lrint
check_effective_target_vect_call_btrunc
check_effective_target_vect_call_btruncf
check_effective_target_vect_call_ceil
check_effective_target_vect_call_ceilf
check_effective_target_vect_call_floor
check_effective_target_vect_call_floorf
check_effective_target_vect_call_lceil
check_effective_target_vect_call_lfloor
check_effective_target_vect_call_nearbyint
check_effective_target_vect_call_nearbyintf
check_effective_target_vect_call_round
check_effective_target_vect_call_roundf

2. Not sure we will need to enable or not:

check_effective_target_vect_complex_*
check_effective_target_vect_simd_clones
check_effective_target_vect_bswap
check_effective_target_vect_widen_shift
check_effective_target_vect_widen_mult_*
check_effective_target_vect_widen_sum_*
check_effective_target_vect_unpack
check_effective_target_vect_interleave
check_effective_target_vect_extract_even_odd
check_effective_target_vect_pack_trunc
check_effective_target_vect_check_ptrs
check_effective_target_vect_sdiv_pow2_si
check_effective_target_vect_usad_*
check_effective_target_vect_udot_*
check_effective_target_vect_sdot_*
check_effective_target_vect_gather_load_ifn

After this patch, we will have these following additional FAILs:
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s1115.c -flto -ffat-lto-objects  scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s1115.c scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s114.c -flto -ffat-lto-objects  scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s114.c scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s1161.c -flto -ffat-lto-objects  scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s1161.c scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s1232.c -flto -ffat-lto-objects  scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s1232.c scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s124.c -flto -ffat-lto-objects  scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s124.c scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s1279.c -flto -ffat-lto-objects  scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s1279.c scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s161.c -flto -ffat-lto-objects  scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s161.c scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s253.c -flto -ffat-lto-objects  scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s253.c scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s257.c -flto -ffat-lto-objects  scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s257.c scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s271.c -flto -ffat-lto-objects  scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s271.c scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s2711.c -flto -ffat-lto-objects  scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s2711.c scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s2712.c -flto -ffat-lto-objects  scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s2712.c scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s272.c -flto -ffat-lto-objects  scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s272.c scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s273.c -flto -ffat-lto-objects  scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s273.c scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s274.c -flto -ffat-lto-objects  scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s274.c scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s276.c -flto -ffat-lto-objects  scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s276.c scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s278.c -flto -ffat-lto-objects  scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s278.c scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s279.c -flto -ffat-lto-objects  scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s279.c scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s3111.c -flto -ffat-lto-objects  scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s3111.c scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s353.c -flto -ffat-lto-objects  scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s353.c scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s441.c -flto -ffat-lto-objects  scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s441.c scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s443.c -flto -ffat-lto-objects  scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-s443.c scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-vif.c -flto -ffat-lto-objects  scan-tree-dump vect "vectorized 1 loops"
XPASS: gcc.dg/vect/tsvc/vect-tsvc-vif.c scan-tree-dump vect "vectorized 1 loops"
FAIL: gcc.dg/vect/vect-114.c -flto -ffat-lto-objects  scan-tree-dump-times vect "vectorized 0 loops" 1
FAIL: gcc.dg/vect/vect-114.c scan-tree-dump-times vect "vectorized 0 loops" 1

FAIL: gcc.dg/vect/vect-live-2.c -flto -ffat-lto-objects  scan-tree-dump-times vect "vec_stmt_relevant_p: stmt live but not relevant" 1
FAIL: gcc.dg/vect/vect-live-2.c scan-tree-dump-times vect "vec_stmt_relevant_p: stmt live but not relevant" 1
FAIL: gcc.dg/vect/vect-reduc-or_1.c -flto -ffat-lto-objects  scan-tree-dump vect "Reduce using vector shifts"
FAIL: gcc.dg/vect/vect-reduc-or_1.c scan-tree-dump vect "Reduce using vector shifts"
FAIL: gcc.dg/vect/vect-reduc-or_2.c -flto -ffat-lto-objects  scan-tree-dump vect "Reduce using vector shifts"
FAIL: gcc.dg/vect/vect-reduc-or_2.c scan-tree-dump vect "Reduce using vector shifts"

FAIL: gcc.dg/vect/vect-cond-arith-5.c -flto -ffat-lto-objects  scan-tree-dump optimized " = \\.COND_ADD"
FAIL: gcc.dg/vect/vect-cond-arith-5.c -flto -ffat-lto-objects  scan-tree-dump optimized " = \\.COND_SUB"
FAIL: gcc.dg/vect/vect-cond-arith-5.c -flto -ffat-lto-objects  scan-tree-dump optimized " = \\.COND_MUL"
FAIL: gcc.dg/vect/vect-cond-arith-5.c -flto -ffat-lto-objects  scan-tree-dump optimized " = \\.COND_RDIV"

They are all dump FAILs (No more ICE and execution FAILs).

Fixing those FAILs will be another separate patch.

But I think we should commit this patch first.

Ok for trunk ?

gcc/testsuite/ChangeLog:

	* lib/target-supports.exp: Enable more vect tests for RVV.