[PATCH 07/20] arm: [MVE intrinsics] add unary_n shape

[Christophe Lyon <christophe.lyon@arm.com>]

This patch adds the unary_n shape description.

2022-10-25  Christophe Lyon  <christophe.lyon@arm.com>

	gcc/
	* config/arm/arm-mve-builtins-shapes.cc (unary_n): New.
	* config/arm/arm-mve-builtins-shapes.h (unary_n): New.
---
 gcc/config/arm/arm-mve-builtins-shapes.cc | 53 +++++++++++++++++++++++
 gcc/config/arm/arm-mve-builtins-shapes.h  |  1 +
 2 files changed, 54 insertions(+)

diff --git a/gcc/config/arm/arm-mve-builtins-shapes.cc b/gcc/config/arm/arm-mve-builtins-shapes.cc
index ea0112b3e99..c78683aaba2 100644
--- a/gcc/config/arm/arm-mve-builtins-shapes.cc
+++ b/gcc/config/arm/arm-mve-builtins-shapes.cc
@@ -1094,6 +1094,59 @@ struct unary_convert_def : public overloaded_base<1>
 };
 SHAPE (unary_convert)
 
+/* <T0>_t vfoo[_n]_t0(<S0>_t)
+
+   Example: vdupq.
+   int16x8_t [__arm_]vdupq_n_s16(int16_t a)
+   int16x8_t [__arm_]vdupq_m[_n_s16](int16x8_t inactive, int16_t a, mve_pred16_t p)
+   int16x8_t [__arm_]vdupq_x_n_s16(int16_t a, mve_pred16_t p)  */
+struct unary_n_def : public overloaded_base<0>
+{
+  bool
+  explicit_type_suffix_p (unsigned int, enum predication_index pred,
+			  enum mode_suffix_index) const override
+  {
+    return pred != PRED_m;
+  }
+
+  bool
+  explicit_mode_suffix_p (enum predication_index pred,
+			  enum mode_suffix_index mode) const override
+  {
+    return ((mode == MODE_n)
+	    && (pred != PRED_m));
+  }
+
+  bool
+  skip_overload_p (enum predication_index pred, enum mode_suffix_index mode)
+    const override
+  {
+    switch (mode)
+      {
+      case MODE_n:
+	return pred != PRED_m;
+
+      default:
+	gcc_unreachable ();
+      }
+  }
+
+  void
+  build (function_builder &b, const function_group_info &group,
+	 bool preserve_user_namespace) const override
+  {
+    b.add_overloaded_functions (group, MODE_n, preserve_user_namespace);
+    build_all (b, "v0,s0", group, MODE_n, preserve_user_namespace);
+  }
+
+  tree
+  resolve (function_resolver &r) const override
+  {
+    return r.resolve_unary_n ();
+  }
+};
+SHAPE (unary_n)
+
 } /* end namespace arm_mve */
 
 #undef SHAPE
diff --git a/gcc/config/arm/arm-mve-builtins-shapes.h b/gcc/config/arm/arm-mve-builtins-shapes.h
index 59c4dc39c39..a35faec2542 100644
--- a/gcc/config/arm/arm-mve-builtins-shapes.h
+++ b/gcc/config/arm/arm-mve-builtins-shapes.h
@@ -54,6 +54,7 @@ namespace arm_mve
     extern const function_shape *const inherent;
     extern const function_shape *const unary;
     extern const function_shape *const unary_convert;
+    extern const function_shape *const unary_n;
 
   } /* end namespace arm_mve::shapes */
 } /* end namespace arm_mve */
-- 
2.34.1