[libc][libm][GPU] Populating 'libmgpu.a' for math on the GPU

This commit populates `libmgpu.a` with wrappers for the following built-ins
- modf, modff
- nearbyint, nearbyintf
- remainder, remainderf
- remquo, remquof
- rint, rintf
- scalbn, scalbnf
- sqrt, sqrtf
- tan, tanf
- tanh, tanhf
- trunc, truncf
and wrappers the following vendor implementations
- nextafter, nextafterf
- sincos, sincosf
- sinh, sinhf
- sinf
- tan, tanf
- tanh, tanhf

Reviewed By: jhuber6

Differential Revision: https://reviews.llvm.org/D153395

libc/config/gpu/entrypoints.txt

@@ -150,9 +150,32 @@ set(TARGET_LIBM_ENTRYPOINTS
     libc.src.math.pow
     libc.src.math.powf
     libc.src.math.sin
+    libc.src.math.modf
+    libc.src.math.modff
+    libc.src.math.nearbyint
+    libc.src.math.nearbyintf
+    libc.src.math.nextafter
+    libc.src.math.nextafterf
+    libc.src.math.remainder
+    libc.src.math.remainderf
+    libc.src.math.remquo
+    libc.src.math.remquof
+    libc.src.math.rint
+    libc.src.math.rintf
     libc.src.math.round
     libc.src.math.roundf
-    libc.src.math.roundl
+    libc.src.math.scalbn
+    libc.src.math.scalbnf
+    libc.src.math.sinh
+    libc.src.math.sinhf
+    libc.src.math.sqrt
+    libc.src.math.sqrtf
+    libc.src.math.tan
+    libc.src.math.tanf
+    libc.src.math.tanh
+    libc.src.math.tanhf
+    libc.src.math.trunc
+    libc.src.math.truncf
 )
 
 set(TARGET_LLVMLIBC_ENTRYPOINTS

libc/src/math/CMakeLists.txt

@@ -198,6 +198,8 @@ add_math_entrypoint_object(sincosf)
 
 add_math_entrypoint_object(sin)
 add_math_entrypoint_object(sinf)
+
+add_math_entrypoint_object(sinh)
 add_math_entrypoint_object(sinhf)
 
 add_math_entrypoint_object(sqrt)
@@ -206,6 +208,8 @@ add_math_entrypoint_object(sqrtl)
 
 add_math_entrypoint_object(tan)
 add_math_entrypoint_object(tanf)
+
+add_math_entrypoint_object(tanh)
 add_math_entrypoint_object(tanhf)
 
 add_math_entrypoint_object(trunc)

libc/src/math/gpu/CMakeLists.txt

@@ -203,6 +203,106 @@ add_math_entrypoint_gpu_object(
     -O2
 )
 
+add_math_entrypoint_gpu_object(
+  modf
+  SRCS
+    modf.cpp
+  HDRS
+    ../modf.h
+  COMPILE_OPTIONS
+    -O2
+)
+
+add_math_entrypoint_gpu_object(
+  modff
+  SRCS
+    modff.cpp
+  HDRS
+    ../modff.h
+  COMPILE_OPTIONS
+    -O2
+)
+
+add_math_entrypoint_gpu_object(
+  nearbyint
+  SRCS
+    nearbyint.cpp
+  HDRS
+    ../nearbyint.h
+  COMPILE_OPTIONS
+    -O2
+)
+
+add_math_entrypoint_gpu_object(
+  nearbyintf
+  SRCS
+    nearbyintf.cpp
+  HDRS
+    ../nearbyintf.h
+  COMPILE_OPTIONS
+    -O2
+)
+
+add_math_entrypoint_gpu_object(
+  remainder
+  SRCS
+    remainder.cpp
+  HDRS
+    ../remainder.h
+  COMPILE_OPTIONS
+    -O2
+)
+
+add_math_entrypoint_gpu_object(
+  remainderf
+  SRCS
+    remainderf.cpp
+  HDRS
+    ../remainderf.h
+  COMPILE_OPTIONS
+    -O2
+)
+
+add_math_entrypoint_gpu_object(
+  remquo
+  SRCS
+    remquo.cpp
+  HDRS
+    ../remquo.h
+  COMPILE_OPTIONS
+    -O2
+)
+
+add_math_entrypoint_gpu_object(
+  remquof
+  SRCS
+    remquof.cpp
+  HDRS
+    ../remquof.h
+  COMPILE_OPTIONS
+    -O2
+)
+
+add_math_entrypoint_gpu_object(
+  rint
+  SRCS
+    rint.cpp
+  HDRS
+    ../rint.h
+  COMPILE_OPTIONS
+    -O2
+)
+
+add_math_entrypoint_gpu_object(
+  rintf
+  SRCS
+    rintf.cpp
+  HDRS
+    ../rintf.h
+  COMPILE_OPTIONS
+    -O2
+)
+
 add_math_entrypoint_gpu_object(
   round
   SRCS
@@ -212,3 +312,123 @@ add_math_entrypoint_gpu_object(
   COMPILE_OPTIONS
     -O2
 )
+
+add_math_entrypoint_gpu_object(
+  scalbn
+  SRCS
+    scalbn.cpp
+  HDRS
+    ../scalbn.h
+  COMPILE_OPTIONS
+    -O2
+)
+
+add_math_entrypoint_gpu_object(
+  scalbnf
+  SRCS
+    scalbnf.cpp
+  HDRS
+    ../scalbnf.h
+  COMPILE_OPTIONS
+    -O2
+)
+
+add_math_entrypoint_gpu_object(
+  sinh
+  SRCS
+    sinh.cpp
+  HDRS
+    ../sinh.h
+  COMPILE_OPTIONS
+    -O2
+)
+
+add_math_entrypoint_gpu_object(
+  sinhf
+  SRCS
+    sinhf.cpp
+  HDRS
+    ../sinhf.h
+  COMPILE_OPTIONS
+    -O2
+)
+
+add_math_entrypoint_gpu_object(
+  sqrt
+  SRCS
+    sqrt.cpp
+  HDRS
+    ../sqrt.h
+  COMPILE_OPTIONS
+    -O2
+)
+
+add_math_entrypoint_gpu_object(
+  sqrtf
+  SRCS
+    sqrtf.cpp
+  HDRS
+    ../sqrtf.h
+  COMPILE_OPTIONS
+    -O2
+)
+
+add_math_entrypoint_gpu_object(
+  tan
+  SRCS
+    tan.cpp
+  HDRS
+    ../tan.h
+  COMPILE_OPTIONS
+    -O2
+)
+
+add_math_entrypoint_gpu_object(
+  tanf
+  SRCS
+    tanf.cpp
+  HDRS
+    ../tanf.h
+  COMPILE_OPTIONS
+    -O2
+)
+
+add_math_entrypoint_gpu_object(
+  tanh
+  SRCS
+    tanh.cpp
+  HDRS
+    ../tanh.h
+  COMPILE_OPTIONS
+    -O2
+)
+
+add_math_entrypoint_gpu_object(
+  tanhf
+  SRCS
+    tanhf.cpp
+  HDRS
+    ../tanhf.h
+  COMPILE_OPTIONS
+    -O2
+)
+
+add_math_entrypoint_gpu_object(
+  trunc
+  SRCS
+    trunc.cpp
+  HDRS
+    ../trunc.h
+  COMPILE_OPTIONS
+    -O2
+)
+
+add_math_entrypoint_gpu_object(
+  truncf
+  SRCS
+    truncf.cpp
+  HDRS
+    ../truncf.h
+  COMPILE_OPTIONS
+    -O2
+)

libc/src/math/gpu/modf.cpp

@@ -0,0 +1,18 @@
+//===-- Implementation of the GPU modf function ---------------------------===//
+//
+// 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 "src/math/modf.h"
+#include "src/__support/common.h"
+
+namespace __llvm_libc {
+
+LLVM_LIBC_FUNCTION(double, modf, (double x, double *iptr)) {
+  return __builtin_modf(x, iptr);
+}
+
+} // namespace __llvm_libc

libc/src/math/gpu/modff.cpp

@@ -0,0 +1,18 @@
+//===-- Implementation of the GPU modff function --------------------------===//
+//
+// 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 "src/math/modff.h"
+#include "src/__support/common.h"
+
+namespace __llvm_libc {
+
+LLVM_LIBC_FUNCTION(float, modff, (float x, float *iptr)) {
+  return __builtin_modff(x, iptr);
+}
+
+} // namespace __llvm_libc

libc/src/math/gpu/nearbyint.cpp

@@ -0,0 +1,18 @@
+//===-- Implementation of the GPU nearbyint function ----------------------===//
+//
+// 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 "src/math/nearbyint.h"
+#include "src/__support/common.h"
+
+namespace __llvm_libc {
+
+LLVM_LIBC_FUNCTION(double, nearbyint, (double x)) {
+  return __builtin_nearbyint(x);
+}
+
+} // namespace __llvm_libc

libc/src/math/gpu/nearbyintf.cpp

@@ -0,0 +1,18 @@
+//===-- Implementation of the GPU nearbyintf function ---------------------===//
+//
+// 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 "src/math/nearbyintf.h"
+#include "src/__support/common.h"
+
+namespace __llvm_libc {
+
+LLVM_LIBC_FUNCTION(float, nearbyintf, (float x)) {
+  return __builtin_nearbyintf(x);
+}
+
+} // namespace __llvm_libc

libc/src/math/gpu/remainder.cpp

@@ -0,0 +1,18 @@
+//===-- Implementation of the GPU remainder function ----------------------===//
+//
+// 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 "src/math/remainder.h"
+#include "src/__support/common.h"
+
+namespace __llvm_libc {
+
+LLVM_LIBC_FUNCTION(double, remainder, (double x, double y)) {
+  return __builtin_remainder(x, y);
+}
+
+} // namespace __llvm_libc

libc/src/math/gpu/remainderf.cpp

@@ -0,0 +1,18 @@
+//===-- Implementation of the GPU remainderf function ---------------------===//
+//
+// 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 "src/math/remainderf.h"
+#include "src/__support/common.h"
+
+namespace __llvm_libc {
+
+LLVM_LIBC_FUNCTION(float, remainderf, (float x, float y)) {
+  return __builtin_remainderf(x, y);
+}
+
+} // namespace __llvm_libc