Add `simd_clamp`

1 files changed, 51 insertions, 0 deletions

diff --git a/src/check_builtin.cpp b/src/check_builtin.cpp
index 54bede3a8..45c9c93c5 100644
--- a/src/check_builtin.cpp
+++ b/src/check_builtin.cpp
@@ -956,6 +956,57 @@ bool check_builtin_simd_operation(CheckerContext *c, Operand *operand, Ast *call
 			return true;
 		}
 
+	case BuiltinProc_simd_clamp:
+		{
+			Operand x = {};
+			Operand y = {};
+			Operand z = {};
+			check_expr(c, &x, ce->args[0]); if (x.mode == Addressing_Invalid) { return false; }
+			check_expr_with_type_hint(c, &y, ce->args[1], x.type); if (y.mode == Addressing_Invalid) { return false; }
+			check_expr_with_type_hint(c, &z, ce->args[2], x.type); if (z.mode == Addressing_Invalid) { return false; }
+			convert_to_typed(c, &y, x.type);
+			convert_to_typed(c, &z, x.type);
+			if (!is_type_simd_vector(x.type)) {
+				error(x.expr, "'%.*s' expected a simd vector type", LIT(builtin_name));
+				return false;
+			}
+			if (!is_type_simd_vector(y.type)) {
+				error(y.expr, "'%.*s' expected a simd vector type", LIT(builtin_name));
+				return false;
+			}
+			if (!is_type_simd_vector(z.type)) {
+				error(z.expr, "'%.*s' expected a simd vector type", LIT(builtin_name));
+				return false;
+			}
+			if (!are_types_identical(x.type, y.type)) {
+				gbString xs = type_to_string(x.type);
+				gbString ys = type_to_string(y.type);
+				error(x.expr, "'%.*s' expected 2 arguments of the same type, got '%s' vs '%s'", LIT(builtin_name), xs, ys);
+				gb_string_free(ys);
+				gb_string_free(xs);
+				return false;
+			}
+			if (!are_types_identical(x.type, z.type)) {
+				gbString xs = type_to_string(x.type);
+				gbString zs = type_to_string(z.type);
+				error(x.expr, "'%.*s' expected 2 arguments of the same type, got '%s' vs '%s'", LIT(builtin_name), xs, zs);
+				gb_string_free(zs);
+				gb_string_free(xs);
+				return false;
+			}
+			Type *elem = base_array_type(x.type);
+			if (!is_type_integer(elem) && !is_type_float(elem)) {
+				gbString xs = type_to_string(x.type);
+				error(x.expr, "'%.*s' expected a #simd type with an integer or floating point element, got '%s'", LIT(builtin_name), xs);
+				gb_string_free(xs);
+				return false;
+			}
+
+			operand->mode = Addressing_Value;
+			operand->type = x.type;
+			return true;
+		}
+
 	default:
 		GB_PANIC("Unhandled simd intrinsic: %.*s", LIT(builtin_name));
 	}