[libclc] Move fract to the CLC library (llvm#137785)

The builtin was already vectorized so there's no difference to codegen
for non-SPIR-V targets.

Author: frasercrmck

libclc/generic/include/clc/math/fract.inc renamed to libclc/clc/include/clc/math/clc_fract.h

@@ -6,6 +6,15 @@
 //
 //===----------------------------------------------------------------------===//
 
-_CLC_OVERLOAD _CLC_DECL __CLC_GENTYPE fract(__CLC_GENTYPE x, global __CLC_GENTYPE *iptr);
-_CLC_OVERLOAD _CLC_DECL __CLC_GENTYPE fract(__CLC_GENTYPE x, local __CLC_GENTYPE *iptr);
-_CLC_OVERLOAD _CLC_DECL __CLC_GENTYPE fract(__CLC_GENTYPE x, private __CLC_GENTYPE *iptr);
+#ifndef __CLC_MATH_CLC_FRACT_H__
+#define __CLC_MATH_CLC_FRACT_H__
+
+#define __CLC_FUNCTION __clc_fract
+#define __CLC_BODY <clc/math/unary_decl_with_ptr.inc>
+
+#include <clc/math/gentype.inc>
+
+#undef __CLC_BODY
+#undef __CLC_FUNCTION
+
+#endif // __CLC_MATH_CLC_FRACT_H__

libclc/clc/lib/generic/SOURCES

@@ -46,6 +46,7 @@ math/clc_fmax.cl
 math/clc_fmin.cl
 math/clc_floor.cl
 math/clc_fmod.cl
+math/clc_fract.cl
 math/clc_frexp.cl
 math/clc_hypot.cl
 math/clc_ldexp.cl

libclc/clc/lib/generic/math/clc_fract.cl

@@ -0,0 +1,17 @@
+//===----------------------------------------------------------------------===//
+//
+// 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/clcmacro.h>
+#include <clc/internal/clc.h>
+#include <clc/math/clc_floor.h>
+#include <clc/math/clc_fmin.h>
+#include <clc/relational/clc_isinf.h>
+#include <clc/relational/clc_isnan.h>
+
+#define __CLC_BODY <clc_fract.inc>
+#include <clc/math/gentype.inc>

libclc/clc/lib/generic/math/clc_fract.inc

@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#if __CLC_FPSIZE == 64
+#define MIN_CONSTANT 0x1.fffffffffffffp-1
+#elif __CLC_FPSIZE == 32
+#define MIN_CONSTANT 0x1.fffffep-1f
+#elif __CLC_FPSIZE == 16
+#define MIN_CONSTANT 0x1.ffcp-1h
+#endif
+
+_CLC_OVERLOAD _CLC_DEF __CLC_GENTYPE __clc_fract(__CLC_GENTYPE x,
+                                                 private __CLC_GENTYPE *iptr) {
+  *iptr = __clc_floor(x);
+  __CLC_GENTYPE r = __clc_fmin(x - *iptr, MIN_CONSTANT);
+  r = __clc_isinf(x) ? __CLC_FP_LIT(0.0) : r;
+  r = __clc_isnan(x) ? x : r;
+  return r;
+}
+
+#define FRACT_DEF(addrspace)                                                   \
+  _CLC_OVERLOAD _CLC_DEF __CLC_GENTYPE __clc_fract(                            \
+      __CLC_GENTYPE x, addrspace __CLC_GENTYPE *iptr) {                        \
+    __CLC_GENTYPE private_iptr;                                                \
+    __CLC_GENTYPE ret = __clc_fract(x, &private_iptr);                         \
+    *iptr = private_iptr;                                                      \
+    return ret;                                                                \
+  }
+
+FRACT_DEF(local);
+FRACT_DEF(global);
+
+#undef MIN_CONSTANT

libclc/generic/include/clc/math/fract.h

@@ -6,5 +6,7 @@
 //
 //===----------------------------------------------------------------------===//
 
-#define __CLC_BODY <clc/math/fract.inc>
+#define __CLC_FUNCTION fract
+#define __CLC_BODY <clc/math/unary_decl_with_ptr.inc>
 #include <clc/math/gentype.inc>
+#undef __CLC_FUNCTION

libclc/generic/lib/math/fract.cl

@@ -7,6 +7,8 @@
 //===----------------------------------------------------------------------===//
 
 #include <clc/clc.h>
+#include <clc/math/clc_fract.h>
 
-#define __CLC_BODY <fract.inc>
+#define FUNCTION fract
+#define __CLC_BODY <clc/math/unary_def_with_ptr.inc>
 #include <clc/math/gentype.inc>