[Xtensa] Add HIFI3 C types and intrinsics

Author: maciej-czekaj

clang/lib/Headers/CMakeLists.txt

@@ -234,6 +234,11 @@ set(x86_files
   cpuid.h
   )
 
+set(xtensa_files
+  xtensa_defs.h
+  xtensa_protos.h
+)
+
 set(windows_only_files
   intrin.h
   vadefs.h
@@ -261,6 +266,7 @@ set(files
   ${systemz_files}
   ${ve_files}
   ${x86_files}
+  ${xtensa_files}
   ${webassembly_files}
   ${windows_only_files}
   ${utility_files}
@@ -463,6 +469,7 @@ add_header_target("systemz-resource-headers" "${systemz_files}")
 add_header_target("ve-resource-headers" "${ve_files}")
 add_header_target("webassembly-resource-headers" "${webassembly_files}")
 add_header_target("x86-resource-headers" "${x86_files}")
+add_header_target("xtensa-resource-headers" "${xtensa_files}")
 
 # Other header groupings
 add_header_target("hlsl-resource-headers" ${hlsl_files})
@@ -633,7 +640,13 @@ if(NOT CLANG_ENABLE_HLSL)
 endif()
 
 install(
-  FILES ${hlsl_h}
+  FILES ${xtensa_files}
+  DESTINATION ${header_install_dir}
+  EXCLUDE_FROM_ALL
+  COMPONENT xtensa-resource-headers)
+
+install(
+  FILES ${hlsl_files}
   DESTINATION ${header_install_dir}
   ${EXCLUDE_HLSL}
   COMPONENT hlsl-resource-headers)

clang/lib/Headers/xtensa_defs.h

@@ -0,0 +1,66 @@
+/*===---- xtensa_defs.h - Xtensa definitions -------------------------------===
+ *
+ * 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 __XTENSAHIFI3_H
+#define __XTENSAHIFI3_H
+
+typedef __attribute__((ext_vector_type(1))) _Bool xtbool;
+typedef __attribute__((ext_vector_type(2))) _Bool xtbool2;
+typedef __attribute__((ext_vector_type(4))) _Bool xtbool4;
+
+typedef int ae_int32 __attribute__((vector_size(4)));
+typedef int ae_int32x2 __attribute__((vector_size(8)));
+typedef short ae_int16 __attribute__((vector_size(2)));
+typedef short ae_int16x2 __attribute__((vector_size(4)));
+typedef short ae_int16x4 __attribute__((vector_size(8)));
+typedef long long ae_int64 __attribute__((vector_size(8)));
+typedef unsigned char ae_valign __attribute__((vector_size(8)));
+typedef ae_int16x4 ae_f16x4;
+typedef ae_int32x2 ae_f32x2;
+typedef ae_int32 ae_f32;
+typedef ae_int64 ae_f64;
+typedef ae_int32 ae_f24;
+typedef ae_int32x2 ae_f24x2;
+typedef ae_int16 ae_f16;
+
+#include <xtensa_protos.h>
+
+#define AE_SETCBEGIN0(x) WUR_AE_CBEGIN0(x)
+#define AE_SETCEND0(x) WUR_AE_CEND0(x)
+#define AE_ZERO64(x) AE_MOVI(0)
+#define AE_ZERO24(x) AE_MOVI(0)
+#define AE_ZERO32(x) AE_MOVI(0)
+#define AE_ZERO16(x) AE_MOVI(0)
+#define AE_ZEROQ56(x) AE_ZERO64(x)
+
+#define AE_SEL32_L(a)                                                          \
+  ({                                                                           \
+    ae_int32x2 _a = a;                                                         \
+    __builtin_shufflevector(_a, _a, 0);                                        \
+  })
+
+#define AE_INT32(a) __builtin_xtensa_ae_int32(a);
+#define AE_INT32X2(a) __builtin_xtensa_ae_int32x2(a);
+
+#define AE_F32X2 AE_INT32X2
+#define AE_F32 AE_INT32
+
+#define AE_MOVINT16X4_FROMINT32X2(a) ((ae_int32x2)(a))
+
+#define AE_F32_ADDS_F32(s1, s2)                                                \
+  AE_F32(AE_ADD32S(AE_INT32X2(s1), AE_INT32X2(s2)))
+
+typedef float xtfloat;
+
+#define XT_xtfloat_storeip(x, a, i) ({ a = __builtin_xtensa_xt_ssip(x, a, i); })
+#define XT_xtfloat_loadip(x, a, i)                                             \
+  ({ x = __builtin_xtensa_xt_lsip((xtfloat **)&a, i); })
+#define XT_xtfloat_loadxp(x, a, i)                                             \
+  ({ x = __builtin_xtensa_xt_lsxp((xtfloat **)&a, i); })
+
+#endif /* __XTENSAHIFI3_H */