[PATCH v2 3/3] RISC-V: Enable vectorizable early exit testsuite

[pan2.li@intel.com]

From: Pan Li <pan2.li@intel.com>

After we supported vectorizable early exit in RISC-V,  we would like to
enable the gcc vect test for vectorizable early test.

The vect-early-break_124-pr114403.c failed to vectorize for now.
Because that the __builtin_memcpy with 8 bytes failed to folded into
int64 assignment during ccp1.  We will improve that first and mark
this as xfail for RISC-V.

The below tests are passed for this patch:
1. The riscv fully regression tests.

gcc/testsuite/ChangeLog:

	* gcc.dg/vect/slp-mask-store-1.c: Add pragma novector as it will
	have 2 times LOOP VECTORIZED in RISC-V.
	* gcc.dg/vect/vect-early-break_124-pr114403.c: Xfail for the
	riscv backend.
	* lib/target-supports.exp: Add RISC-V backend.

Signed-off-by: Pan Li <pan2.li@intel.com>
---
 gcc/testsuite/gcc.dg/vect/slp-mask-store-1.c              | 2 ++
 gcc/testsuite/gcc.dg/vect/vect-early-break_124-pr114403.c | 2 +-
 gcc/testsuite/lib/target-supports.exp                     | 2 ++
 3 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/gcc/testsuite/gcc.dg/vect/slp-mask-store-1.c b/gcc/testsuite/gcc.dg/vect/slp-mask-store-1.c
index fdd9032da98..2f80bf89e5e 100644
--- a/gcc/testsuite/gcc.dg/vect/slp-mask-store-1.c
+++ b/gcc/testsuite/gcc.dg/vect/slp-mask-store-1.c
@@ -28,6 +28,8 @@ main ()
 
   if (__builtin_memcmp (x, res, sizeof (x)) != 0)
     abort ();
+
+#pragma GCC novector
   for (int i = 0; i < 32; ++i)
     if (flag[i] != 0 && flag[i] != 1)
       abort ();
diff --git a/gcc/testsuite/gcc.dg/vect/vect-early-break_124-pr114403.c b/gcc/testsuite/gcc.dg/vect/vect-early-break_124-pr114403.c
index 51abf245ccb..101ae1e0eaa 100644
--- a/gcc/testsuite/gcc.dg/vect/vect-early-break_124-pr114403.c
+++ b/gcc/testsuite/gcc.dg/vect/vect-early-break_124-pr114403.c
@@ -2,7 +2,7 @@
 /* { dg-require-effective-target vect_early_break_hw } */
 /* { dg-require-effective-target vect_long_long } */
 
-/* { dg-final { scan-tree-dump "LOOP VECTORIZED" "vect" } } */
+/* { dg-final { scan-tree-dump "LOOP VECTORIZED" "vect" { xfail riscv*-*-* } } } */
 
 #include "tree-vect.h"
 
diff --git a/gcc/testsuite/lib/target-supports.exp b/gcc/testsuite/lib/target-supports.exp
index 6f5d477b128..ec9baa4f32a 100644
--- a/gcc/testsuite/lib/target-supports.exp
+++ b/gcc/testsuite/lib/target-supports.exp
@@ -4099,6 +4099,7 @@ proc check_effective_target_vect_early_break { } {
 	|| [check_effective_target_arm_v8_neon_ok]
 	|| [check_effective_target_sse4]
 	|| [istarget amdgcn-*-*]
+	|| [check_effective_target_riscv_v]
 	}}]
 }
 
@@ -4114,6 +4115,7 @@ proc check_effective_target_vect_early_break_hw { } {
 	|| [check_effective_target_arm_v8_neon_hw]
 	|| [check_sse4_hw_available]
 	|| [istarget amdgcn-*-*]
+	|| [check_effective_target_riscv_v_ok]
 	}}]
 }
 
-- 
2.34.1