RISC-V: Add testcases for vec_duplicate + vadd.vv combine case 1 with GR2VR cost 2

Add asm dump check and for vec_duplicate + vadd.vv combine case 1 to vadd.vx
with the cost of GR2VR is 2.  The testcases is not that tidy according
to the result, but we will continue tuning the cost model for this.

The below test suites are passed for this patch.
* The rv64gcv fully regression test.

gcc/testsuite/ChangeLog:

	* gcc.target/riscv/rvv/autovec/vx_vf/vx_vadd-6-i16.c: New test.
	* gcc.target/riscv/rvv/autovec/vx_vf/vx_vadd-6-i32.c: New test.
	* gcc.target/riscv/rvv/autovec/vx_vf/vx_vadd-6-i64.c: New test.
	* gcc.target/riscv/rvv/autovec/vx_vf/vx_vadd-6-i8.c: New test.
	* gcc.target/riscv/rvv/autovec/vx_vf/vx_vadd-6-u16.c: New test.
	* gcc.target/riscv/rvv/autovec/vx_vf/vx_vadd-6-u32.c: New test.
	* gcc.target/riscv/rvv/autovec/vx_vf/vx_vadd-6-u64.c: New test.
	* gcc.target/riscv/rvv/autovec/vx_vf/vx_vadd-6-u8.c: New test.

Signed-off-by: Pan Li <pan2.li@intel.com>

8 files changed, 65 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx_vadd-6-i16.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx_vadd-6-i16.c
new file mode 100644
index 0000000..d80f0c0
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx_vadd-6-i16.c
@@ -0,0 +1,8 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gcv_zvl128b -mabi=lp64d --param=gpr2vr-cost=2" } */
+
+#include "vx_binary.h"
+
+DEF_VX_BINARY_CASE_1(int16_t, +, VX_BINARY_BODY_X8)
+
+/* { dg-final { scan-assembler-not {vadd.vx} } } */
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx_vadd-6-i32.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx_vadd-6-i32.c
new file mode 100644
index 0000000..99f6614
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx_vadd-6-i32.c
@@ -0,0 +1,8 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gcv_zvl128b -mabi=lp64d --param=gpr2vr-cost=2" } */
+
+#include "vx_binary.h"
+
+DEF_VX_BINARY_CASE_1(int32_t, +, VX_BINARY_BODY_X4)
+
+/* { dg-final { scan-assembler {vadd.vx} } } */
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx_vadd-6-i64.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx_vadd-6-i64.c
new file mode 100644
index 0000000..ab06c51
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx_vadd-6-i64.c
@@ -0,0 +1,8 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gcv_zvl128b -mabi=lp64d --param=gpr2vr-cost=2" } */
+
+#include "vx_binary.h"
+
+DEF_VX_BINARY_CASE_1(int64_t, +, VX_BINARY_BODY)
+
+/* { dg-final { scan-assembler-not {vadd.vx} } } */
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx_vadd-6-i8.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx_vadd-6-i8.c
new file mode 100644
index 0000000..7ead9d0
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx_vadd-6-i8.c
@@ -0,0 +1,8 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gcv_zvl128b -mabi=lp64d --param=gpr2vr-cost=2" } */
+
+#include "vx_binary.h"
+
+DEF_VX_BINARY_CASE_1(int8_t, +, VX_BINARY_BODY_X16)
+
+/* { dg-final { scan-assembler-not {vadd.vx} } } */
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx_vadd-6-u16.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx_vadd-6-u16.c
new file mode 100644
index 0000000..79b754b
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx_vadd-6-u16.c
@@ -0,0 +1,9 @@
+
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gcv_zvl128b -mabi=lp64d --param=gpr2vr-cost=2" } */
+
+#include "vx_binary.h"
+
+DEF_VX_BINARY_CASE_1(uint16_t, +, VX_BINARY_BODY_X8)
+
+/* { dg-final { scan-assembler {vadd.vx} } } */
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx_vadd-6-u32.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx_vadd-6-u32.c
new file mode 100644
index 0000000..2f70dcd
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx_vadd-6-u32.c
@@ -0,0 +1,8 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gcv_zvl128b -mabi=lp64d --param=gpr2vr-cost=2" } */
+
+#include "vx_binary.h"
+
+DEF_VX_BINARY_CASE_1(uint32_t, +, VX_BINARY_BODY_X4)
+
+/* { dg-final { scan-assembler {vadd.vx} } } */
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx_vadd-6-u64.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx_vadd-6-u64.c
new file mode 100644
index 0000000..8094a2c
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx_vadd-6-u64.c
@@ -0,0 +1,8 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gcv_zvl128b -mabi=lp64d --param=gpr2vr-cost=2" } */
+
+#include "vx_binary.h"
+
+DEF_VX_BINARY_CASE_1(uint64_t, +, VX_BINARY_BODY)
+
+/* { dg-final { scan-assembler-not {vadd.vx} } } */
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx_vadd-6-u8.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx_vadd-6-u8.c
new file mode 100644
index 0000000..56d040b
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx_vadd-6-u8.c
@@ -0,0 +1,8 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gcv_zvl128b -mabi=lp64d --param=gpr2vr-cost=2" } */
+
+#include "vx_binary.h"
+
+DEF_VX_BINARY_CASE_1(uint8_t, +, VX_BINARY_BODY_X16)
+
+/* { dg-final { scan-assembler {vadd.vx} } } */