RISC-V: Add test case for vaadd.vx combine polluting VXRM

Add asm check to make sure vx combine of vaadd.vx will not pollute
the vxrm.

gcc/testsuite/ChangeLog:

	* gcc.target/riscv/rvv/autovec/vx_vf/vx-fixed-vxrm-1-i16.c: New test.
	* gcc.target/riscv/rvv/autovec/vx_vf/vx-fixed-vxrm-1-i32.c: New test.
	* gcc.target/riscv/rvv/autovec/vx_vf/vx-fixed-vxrm-1-i64.c: New test.
	* gcc.target/riscv/rvv/autovec/vx_vf/vx-fixed-vxrm-1-i8.c: New test.

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

4 files changed, 92 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-fixed-vxrm-1-i16.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-fixed-vxrm-1-i16.c
new file mode 100644
index 0000000..2b87321
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-fixed-vxrm-1-i16.c
@@ -0,0 +1,23 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gcv -mabi=lp64d -mrvv-vector-bits=zvl --param=gpr2vr-cost=0 " } */
+
+#define VL        8
+
+#include "vx-fixed-vxrm.h"
+
+#define VT        vint16m1_t
+#define T         int16_t
+#define ELEM_SIZE 16
+#define SUFFIX    i16
+#define FUNC      __riscv_vaadd_vv_i16m1
+
+DEF_FIXED_BINARY_VX_WRAP(VT, T, ELEM_SIZE, SUFFIX, __RISCV_VXRM_RNU, FUNC)
+DEF_FIXED_BINARY_VX_WRAP(VT, T, ELEM_SIZE, SUFFIX, __RISCV_VXRM_RNE, FUNC)
+DEF_FIXED_BINARY_VX_WRAP(VT, T, ELEM_SIZE, SUFFIX, __RISCV_VXRM_RDN, FUNC)
+DEF_FIXED_BINARY_VX_WRAP(VT, T, ELEM_SIZE, SUFFIX, __RISCV_VXRM_ROD, FUNC)
+
+/* { dg-final { scan-assembler-times {csrwi\s+vxrm,0} 1 } } */
+/* { dg-final { scan-assembler-times {csrwi\s+vxrm,1} 1 } } */
+/* { dg-final { scan-assembler-times {csrwi\s+vxrm,2} 1 } } */
+/* { dg-final { scan-assembler-times {csrwi\s+vxrm,3} 1 } } */
+/* { dg-final { scan-assembler-times {vaadd.vx} 4 } } */
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-fixed-vxrm-1-i32.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-fixed-vxrm-1-i32.c
new file mode 100644
index 0000000..b95699b
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-fixed-vxrm-1-i32.c
@@ -0,0 +1,23 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gcv -mabi=lp64d -mrvv-vector-bits=zvl --param=gpr2vr-cost=0 " } */
+
+#define VL        4
+
+#include "vx-fixed-vxrm.h"
+
+#define VT        vint32m1_t
+#define T         int32_t
+#define ELEM_SIZE 32
+#define SUFFIX    i32
+#define FUNC      __riscv_vaadd_vv_i32m1
+
+DEF_FIXED_BINARY_VX_WRAP(VT, T, ELEM_SIZE, SUFFIX, __RISCV_VXRM_RNU, FUNC)
+DEF_FIXED_BINARY_VX_WRAP(VT, T, ELEM_SIZE, SUFFIX, __RISCV_VXRM_RNE, FUNC)
+DEF_FIXED_BINARY_VX_WRAP(VT, T, ELEM_SIZE, SUFFIX, __RISCV_VXRM_RDN, FUNC)
+DEF_FIXED_BINARY_VX_WRAP(VT, T, ELEM_SIZE, SUFFIX, __RISCV_VXRM_ROD, FUNC)
+
+/* { dg-final { scan-assembler-times {csrwi\s+vxrm,0} 1 } } */
+/* { dg-final { scan-assembler-times {csrwi\s+vxrm,1} 1 } } */
+/* { dg-final { scan-assembler-times {csrwi\s+vxrm,2} 1 } } */
+/* { dg-final { scan-assembler-times {csrwi\s+vxrm,3} 1 } } */
+/* { dg-final { scan-assembler-times {vaadd.vx} 4 } } */
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-fixed-vxrm-1-i64.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-fixed-vxrm-1-i64.c
new file mode 100644
index 0000000..48b6010
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-fixed-vxrm-1-i64.c
@@ -0,0 +1,23 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gcv -mabi=lp64d -mrvv-vector-bits=zvl --param=gpr2vr-cost=0 " } */
+
+#define VL        2
+
+#include "vx-fixed-vxrm.h"
+
+#define VT        vint64m1_t
+#define T         int64_t
+#define ELEM_SIZE 64
+#define SUFFIX    i64
+#define FUNC      __riscv_vaadd_vv_i64m1
+
+DEF_FIXED_BINARY_VX_WRAP(VT, T, ELEM_SIZE, SUFFIX, __RISCV_VXRM_RNU, FUNC)
+DEF_FIXED_BINARY_VX_WRAP(VT, T, ELEM_SIZE, SUFFIX, __RISCV_VXRM_RNE, FUNC)
+DEF_FIXED_BINARY_VX_WRAP(VT, T, ELEM_SIZE, SUFFIX, __RISCV_VXRM_RDN, FUNC)
+DEF_FIXED_BINARY_VX_WRAP(VT, T, ELEM_SIZE, SUFFIX, __RISCV_VXRM_ROD, FUNC)
+
+/* { dg-final { scan-assembler-times {csrwi\s+vxrm,0} 1 } } */
+/* { dg-final { scan-assembler-times {csrwi\s+vxrm,1} 1 } } */
+/* { dg-final { scan-assembler-times {csrwi\s+vxrm,2} 1 } } */
+/* { dg-final { scan-assembler-times {csrwi\s+vxrm,3} 1 } } */
+/* { dg-final { scan-assembler-times {vaadd.vx} 4 } } */
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-fixed-vxrm-1-i8.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-fixed-vxrm-1-i8.c
new file mode 100644
index 0000000..d07a625
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-fixed-vxrm-1-i8.c
@@ -0,0 +1,23 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gcv -mabi=lp64d -mrvv-vector-bits=zvl --param=gpr2vr-cost=0 " } */
+
+#define VL        16
+
+#include "vx-fixed-vxrm.h"
+
+#define VT        vint8m1_t
+#define T         int8_t
+#define ELEM_SIZE 8
+#define SUFFIX    i8
+#define FUNC      __riscv_vaadd_vv_i8m1
+
+DEF_FIXED_BINARY_VX_WRAP(VT, T, ELEM_SIZE, SUFFIX, __RISCV_VXRM_RNU, FUNC)
+DEF_FIXED_BINARY_VX_WRAP(VT, T, ELEM_SIZE, SUFFIX, __RISCV_VXRM_RNE, FUNC)
+DEF_FIXED_BINARY_VX_WRAP(VT, T, ELEM_SIZE, SUFFIX, __RISCV_VXRM_RDN, FUNC)
+DEF_FIXED_BINARY_VX_WRAP(VT, T, ELEM_SIZE, SUFFIX, __RISCV_VXRM_ROD, FUNC)
+
+/* { dg-final { scan-assembler-times {csrwi\s+vxrm,0} 1 } } */
+/* { dg-final { scan-assembler-times {csrwi\s+vxrm,1} 1 } } */
+/* { dg-final { scan-assembler-times {csrwi\s+vxrm,2} 1 } } */
+/* { dg-final { scan-assembler-times {csrwi\s+vxrm,3} 1 } } */
+/* { dg-final { scan-assembler-times {vaadd.vx} 4 } } */