rcx

commit b21c6abd41671c31da3cae3cd576027d15444be0
parent 7f03a23fdc342ebf76b3cd7c126eb6de7f5044f6
Author: Robert Russell <robertrussell.72001@gmail.com>
Date:   Fri,  2 Jun 2023 16:08:19 -0700

SIMD stuff

Diffstat:
M
inc/all.h
 | 
5
+++++
M
inc/simd.h
 | 
22
++++++++++------------

2 files changed, 15 insertions(+), 12 deletions(-)
diff --git a/inc/all.h b/inc/all.h
@@ -1,4 +1,5 @@
 /* Everything except bench.h */
+
 #include "alloc.h"
 #include "bits.h"
 #include "buffer.h"
@@ -17,3 +18,7 @@
 #include "utf8.h"
 #include "vector.h"
 #include "vmem.h"
+
+#ifdef __GNUC__
+#include "simd.h"
+#endif
diff --git a/inc/simd.h b/inc/simd.h
@@ -1,7 +1,16 @@
 #pragma once
 
 /* Note: This is a work in progress. Bindings for instructions should be
- * added as needed. */
+ * added as needed. We use GCC builtin's instead of the portable Intel
+ * intrinsics so that we get type-safety and because including x86intrin.h
+ * adds like 1s to compile times. Also, when working with intrinsics, one
+ * will probably accidently depend on compiler details anyway. */
+
+#ifndef __GNUC__
+#error "rcx/simd.h requires GCC extensions"
+#endif
+
+/* TODO: MMX, AVX-512 */
 
 #ifdef __MMX__
 #define R_HAVE_MMX 1
@@ -39,17 +48,6 @@
 #define R_HAVE_AVX2 1
 #endif
 
-/* TODO: AVX-512 */
-
-/* TODO: MMX
-typedef i8  v8i8  __attribute__((vector_size(8)));
-typedef u8  v8u8  __attribute__((vector_size(8)));
-typedef i16 v4i16 __attribute__((vector_size(8)));
-typedef u16 v4u16 __attribute__((vector_size(8)));
-typedef i32 v2i32 __attribute__((vector_size(8)));
-typedef u32 v2u32 __attribute__((vector_size(8)));
-*/
-
 /* 128 bit */
 typedef i8  v16i8 __attribute__((vector_size(16)));
 typedef u8  v16u8 __attribute__((vector_size(16)));