[libclc] Move (fast) length & distance to CLC library (llvm#139701)

This commit also refactors how geometric builtins are defined and
declared, by sharing more helpers. It also removes an unnecessary
gentype-like helper in favour of the more complete math/gentype.inc.

There are no changes to the IR for any of these four builtins.

The 'normalize' builtin will follow in a subsequent commit because it
would involve the addition of missing halfn-type overloads for
completeness.

Author: frasercrmck

libclc/clc/include/clc/geometric/binary_decl.inc

@@ -0,0 +1,16 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Geometric functions are only defined for scalar, vec2, vec3 and vec4
+#if (__CLC_VECSIZE_OR_1 == 1 || __CLC_VECSIZE_OR_1 == 2 ||                     \
+     __CLC_VECSIZE_OR_1 == 3 || __CLC_VECSIZE_OR_1 == 4)
+
+_CLC_OVERLOAD _CLC_DECL __CLC_SCALAR_GENTYPE __CLC_FUNCTION(__CLC_GENTYPE a,
+                                                            __CLC_GENTYPE b);
+
+#endif

libclc/clc/include/clc/geometric/binary_def.inc

@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <clc/utils.h>
+
+#ifndef __CLC_FUNCTION
+#define __CLC_FUNCTION(x) __CLC_CONCAT(__clc_, x)
+#endif
+
+// Geometric functions are only defined for scalar, vec2, vec3 and vec4
+#if (__CLC_VECSIZE_OR_1 == 1 || __CLC_VECSIZE_OR_1 == 2 ||                     \
+     __CLC_VECSIZE_OR_1 == 3 || __CLC_VECSIZE_OR_1 == 4)
+
+_CLC_OVERLOAD _CLC_DEF __CLC_SCALAR_GENTYPE FUNCTION(__CLC_GENTYPE a,
+                                                     __CLC_GENTYPE b) {
+  return __CLC_FUNCTION(FUNCTION)(a, b);
+}
+
+#endif

libclc/clc/include/clc/geometric/clc_distance.h

@@ -0,0 +1,19 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef __CLC_GEOMETRIC_CLC_DISTANCE_H__
+#define __CLC_GEOMETRIC_CLC_DISTANCE_H__
+
+#define __CLC_FUNCTION __clc_distance
+#define __CLC_BODY <clc/geometric/binary_decl.inc>
+
+#include <clc/math/gentype.inc>
+
+#undef __CLC_FUNCTION
+
+#endif // __CLC_GEOMETRIC_CLC_DISTANCE_H__

libclc/clc/include/clc/geometric/clc_dot.h

@@ -9,7 +9,11 @@
 #ifndef __CLC_GEOMETRIC_CLC_DOT_H__
 #define __CLC_GEOMETRIC_CLC_DOT_H__
 
-#define __CLC_BODY <clc/geometric/clc_dot.inc>
-#include <clc/geometric/floatn.inc>
+#define __CLC_FUNCTION __clc_dot
+#define __CLC_BODY <clc/geometric/binary_decl.inc>
+
+#include <clc/math/gentype.inc>
+
+#undef __CLC_FUNCTION
 
 #endif // __CLC_GEOMETRIC_CLC_DOT_H__

libclc/clc/include/clc/geometric/clc_fast_distance.h

@@ -0,0 +1,21 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef __CLC_GEOMETRIC_CLC_FAST_DISTANCE_H__
+#define __CLC_GEOMETRIC_CLC_FAST_DISTANCE_H__
+
+#define __FLOAT_ONLY
+#define __CLC_FUNCTION __clc_fast_distance
+#define __CLC_BODY <clc/geometric/binary_decl.inc>
+
+#include <clc/math/gentype.inc>
+
+#undef __FLOAT_ONLY
+#undef __CLC_FUNCTION
+
+#endif // __CLC_GEOMETRIC_CLC_FAST_DISTANCE_H__

libclc/clc/include/clc/geometric/clc_fast_length.h

@@ -0,0 +1,21 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef __CLC_GEOMETRIC_CLC_FAST_LENGTH_H__
+#define __CLC_GEOMETRIC_CLC_FAST_LENGTH_H__
+
+#define __FLOAT_ONLY
+#define __CLC_FUNCTION __clc_fast_length
+#define __CLC_BODY <clc/geometric/unary_decl.inc>
+
+#include <clc/math/gentype.inc>
+
+#undef __FLOAT_ONLY
+#undef __CLC_FUNCTION
+
+#endif // __CLC_GEOMETRIC_CLC_FAST_LENGTH_H__

libclc/generic/include/clc/geometric/dot.inc renamed to libclc/clc/include/clc/geometric/clc_length.h

@@ -6,4 +6,14 @@
 //
 //===----------------------------------------------------------------------===//
 
-_CLC_OVERLOAD _CLC_DECL __CLC_FLOAT dot(__CLC_FLOATN p0, __CLC_FLOATN p1);
+#ifndef __CLC_GEOMETRIC_CLC_LENGTH_H__
+#define __CLC_GEOMETRIC_CLC_LENGTH_H__
+
+#define __CLC_FUNCTION __clc_length
+#define __CLC_BODY <clc/geometric/unary_decl.inc>
+
+#include <clc/math/gentype.inc>
+
+#undef __CLC_FUNCTION
+
+#endif // __CLC_GEOMETRIC_CLC_LENGTH_H__

libclc/clc/include/clc/geometric/floatn.inc

@@ -0,0 +1,21 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Geometric functions are only defined for scalar, vec2, vec3 and vec4
+#if (__CLC_VECSIZE_OR_1 == 1 || __CLC_VECSIZE_OR_1 == 2 ||                     \
+     __CLC_VECSIZE_OR_1 == 3 || __CLC_VECSIZE_OR_1 == 4)
+
+_CLC_OVERLOAD _CLC_DECL
+#ifdef __CLC_GEOMETRIC_RET_GENTYPE
+    __CLC_GENTYPE
+#else
+    __CLC_SCALAR_GENTYPE
+#endif
+    __CLC_FUNCTION(__CLC_GENTYPE a);
+
+#endif

libclc/clc/include/clc/geometric/unary_decl.inc

@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <clc/utils.h>
+
+#ifndef __CLC_FUNCTION
+#define __CLC_FUNCTION(x) __CLC_CONCAT(__clc_, x)
+#endif
+
+// Geometric functions are only defined for scalar, vec2, vec3 and vec4
+#if (__CLC_VECSIZE_OR_1 == 1 || __CLC_VECSIZE_OR_1 == 2 ||                     \
+     __CLC_VECSIZE_OR_1 == 3 || __CLC_VECSIZE_OR_1 == 4)
+
+_CLC_OVERLOAD _CLC_DEF
+#ifdef __CLC_GEOMETRIC_RET_GENTYPE
+    __CLC_GENTYPE
+#else
+    __CLC_SCALAR_GENTYPE
+#endif
+    FUNCTION(__CLC_GENTYPE a) {
+  return __CLC_FUNCTION(FUNCTION)(a);
+}
+
+#endif