RISC-V: Support RVV VFCVT.F.X.V and VFCVT.F.XU.V rounding mode intrinsic API

This patch would like to support the rounding mode API for the
VFCVT.F.X.V and VFCVT.F.XU.V as the below samples.

* __riscv_vfcvt_f_x_v_f32m1_rm
* __riscv_vfcvt_f_x_v_f32m1_rm_m
* __riscv_vfcvt_f_xu_v_f32m1_rm
* __riscv_vfcvt_f_xu_v_f32m1_rm_m

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

gcc/ChangeLog:

	* config/riscv/riscv-vector-builtins-bases.cc (BASE): New declaration.
	* config/riscv/riscv-vector-builtins-bases.h: Ditto.
	* config/riscv/riscv-vector-builtins-functions.def
	(vfcvt_f_frm): New intrinsic function def.

gcc/testsuite/ChangeLog:

	* gcc.target/riscv/rvv/base/float-point-cvt-f.c: New test.

4 files changed, 61 insertions, 0 deletions

diff --git a/gcc/config/riscv/riscv-vector-builtins-bases.cc b/gcc/config/riscv/riscv-vector-builtins-bases.cc
index 421f409..c78fa8e 100644
--- a/gcc/config/riscv/riscv-vector-builtins-bases.cc
+++ b/gcc/config/riscv/riscv-vector-builtins-bases.cc
@@ -1694,9 +1694,15 @@ public:
   }
 };
 
+template<enum frm_op_type FRM_OP = NO_FRM>
 class vfcvt_f : public function_base
 {
 public:
+  bool has_rounding_mode_operand_p () const override
+  {
+    return FRM_OP == HAS_FRM;
+  }
+
   rtx expand (function_expander &e) const override
   {
     if (e.op_info->op == OP_TYPE_x_v)
@@ -2482,6 +2488,7 @@ static CONSTEXPR const vfcvt_x<UNSPEC_UNSIGNED_VFCVT, HAS_FRM> vfcvt_xu_frm_obj;
 static CONSTEXPR const vfcvt_rtz_x<FIX> vfcvt_rtz_x_obj;
 static CONSTEXPR const vfcvt_rtz_x<UNSIGNED_FIX> vfcvt_rtz_xu_obj;
 static CONSTEXPR const vfcvt_f vfcvt_f_obj;
+static CONSTEXPR const vfcvt_f<HAS_FRM> vfcvt_f_frm_obj;
 static CONSTEXPR const vfwcvt_x<UNSPEC_VFCVT> vfwcvt_x_obj;
 static CONSTEXPR const vfwcvt_x<UNSPEC_UNSIGNED_VFCVT> vfwcvt_xu_obj;
 static CONSTEXPR const vfwcvt_rtz_x<FIX> vfwcvt_rtz_x_obj;
@@ -2733,6 +2740,7 @@ BASE (vfcvt_xu_frm)
 BASE (vfcvt_rtz_x)
 BASE (vfcvt_rtz_xu)
 BASE (vfcvt_f)
+BASE (vfcvt_f_frm)
 BASE (vfwcvt_x)
 BASE (vfwcvt_xu)
 BASE (vfwcvt_rtz_x)
diff --git a/gcc/config/riscv/riscv-vector-builtins-bases.h b/gcc/config/riscv/riscv-vector-builtins-bases.h
index 98b6165..0845258 100644
--- a/gcc/config/riscv/riscv-vector-builtins-bases.h
+++ b/gcc/config/riscv/riscv-vector-builtins-bases.h
@@ -211,6 +211,7 @@ extern const function_base *const vfcvt_xu_frm;
 extern const function_base *const vfcvt_rtz_x;
 extern const function_base *const vfcvt_rtz_xu;
 extern const function_base *const vfcvt_f;
+extern const function_base *const vfcvt_f_frm;
 extern const function_base *const vfwcvt_x;
 extern const function_base *const vfwcvt_xu;
 extern const function_base *const vfwcvt_rtz_x;
diff --git a/gcc/config/riscv/riscv-vector-builtins-functions.def b/gcc/config/riscv/riscv-vector-builtins-functions.def
index 613bbe7..8dbcd94 100644
--- a/gcc/config/riscv/riscv-vector-builtins-functions.def
+++ b/gcc/config/riscv/riscv-vector-builtins-functions.def
@@ -447,6 +447,8 @@ DEF_RVV_FUNCTION (vfcvt_f, alu, full_preds, u_to_f_xu_v_ops)
 
 DEF_RVV_FUNCTION (vfcvt_x_frm, alu_frm, full_preds, f_to_i_f_v_ops)
 DEF_RVV_FUNCTION (vfcvt_xu_frm, alu_frm, full_preds, f_to_u_f_v_ops)
+DEF_RVV_FUNCTION (vfcvt_f_frm, alu_frm, full_preds, i_to_f_x_v_ops)
+DEF_RVV_FUNCTION (vfcvt_f_frm, alu_frm, full_preds, u_to_f_xu_v_ops)
 
 // 13.18. Widening Floating-Point/Integer Type-Convert Instructions
 DEF_RVV_FUNCTION (vfwcvt_x, alu, full_preds, f_to_wi_f_v_ops)
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/base/float-point-cvt-f.c b/gcc/testsuite/gcc.target/riscv/rvv/base/float-point-cvt-f.c
new file mode 100644
index 0000000..424a38e
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/base/float-point-cvt-f.c
@@ -0,0 +1,50 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gcv -mabi=lp64 -O3 -Wno-psabi" } */
+
+#include "riscv_vector.h"
+
+vfloat32m1_t
+test_riscv_vfcvt_f_x_v_f32m1_rm (vint32m1_t op1, size_t vl) {
+  return __riscv_vfcvt_f_x_v_f32m1_rm (op1, 0, vl);
+}
+
+vfloat32m1_t
+test_riscv_vfcvt_f_x_v_f32m1_rm_m (vbool32_t mask, vint32m1_t op1, size_t vl) {
+  return __riscv_vfcvt_f_x_v_f32m1_rm_m (mask, op1, 0, vl);
+}
+
+vfloat32m1_t
+test_riscv_vfcvt_f_xu_v_f32m1_rm (vuint32m1_t op1, size_t vl) {
+  return __riscv_vfcvt_f_xu_v_f32m1_rm (op1, 0, vl);
+}
+
+vfloat32m1_t
+test_riscv_vfcvt_f_xu_v_f32m1_rm_m (vbool32_t mask, vuint32m1_t op1,
+				    size_t vl) {
+  return __riscv_vfcvt_f_xu_v_f32m1_rm_m (mask, op1, 0, vl);
+}
+
+vfloat32m1_t
+test_riscv_vfcvt_f_x_v_f32m1 (vint32m1_t op1, size_t vl) {
+  return __riscv_vfcvt_f_x_v_f32m1 (op1, vl);
+}
+
+vfloat32m1_t
+test_vfcvt_f_x_v_f32m1_m (vbool32_t mask, vint32m1_t op1, size_t vl) {
+  return __riscv_vfcvt_f_x_v_f32m1_m (mask, op1, vl);
+}
+
+vfloat32m1_t
+test_riscv_vfcvt_f_xu_v_f32m1 (vuint32m1_t op1, size_t vl) {
+  return __riscv_vfcvt_f_xu_v_f32m1 (op1, vl);
+}
+
+vfloat32m1_t
+test_vfcvt_f_x_vu_f32m1_m (vbool32_t mask, vuint32m1_t op1, size_t vl) {
+  return __riscv_vfcvt_f_xu_v_f32m1_m (mask, op1, vl);
+}
+
+/* { dg-final { scan-assembler-times {vfcvt\.f\.x[u]?\.v\s+v[0-9]+,\s*v[0-9]+} 8 } } */
+/* { dg-final { scan-assembler-times {frrm\s+[axs][0-9]+} 4 } } */
+/* { dg-final { scan-assembler-times {fsrm\s+[axs][0-9]+} 4 } } */
+/* { dg-final { scan-assembler-times {fsrmi\s+[01234]} 4 } } */