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Merge pull request #4063 from Feoramund/simd-memory

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Vectorize `base:runtime.memory_*`
This commit is contained in:
Jeroen van Rijn
2025-05-29 23:32:19 +02:00
committed by GitHub
parent 0d0f311df1 45219f240e
commit 3142aaf497
7 changed files with 461 additions and 131 deletions
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core/bytes/bytes.odin
+2 -2
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@@ -350,7 +350,7 @@ index_byte :: proc "contextless" (s: []byte, c: byte) -> (index: int) #no_bounds
}
c_vec: simd.u8x16 = c
when !simd.IS_EMULATED {
when simd.HAS_HARDWARE_SIMD {
// Note: While this is something that could also logically take
// advantage of AVX512, the various downclocking and power
// consumption related woes make premature to have a dedicated
@@ -485,7 +485,7 @@ last_index_byte :: proc "contextless" (s: []byte, c: byte) -> int #no_bounds_che
}
c_vec: simd.u8x16 = c
when !simd.IS_EMULATED {
when simd.HAS_HARDWARE_SIMD {
// Note: While this is something that could also logically take
// advantage of AVX512, the various downclocking and power
// consumption related woes make premature to have a dedicated
core/crypto/_chacha20/simd128/chacha20_simd128.odin
+1 -1
View File
@@ -39,7 +39,7 @@ when ODIN_ARCH == .arm64 || ODIN_ARCH == .arm32 {
// Some targets lack runtime feature detection, and will flat out refuse
// to load binaries that have unknown instructions. This is distinct from
// `simd.IS_EMULATED` as actually good designs support runtime feature
// `simd.HAS_HARDWARE_SIMD` as actually good designs support runtime feature
// detection and that constant establishes a baseline.
//
// See:
core/simd/simd.odin
+5 -8
View File
@@ -21,20 +21,17 @@ package simd
import "base:builtin"
import "base:intrinsics"
import "base:runtime"
/*
Check if SIMD is software-emulated on a target platform.
This value is `false`, when the compile-time target has the hardware support for
at 128-bit (or wider) SIMD. If the compile-time target lacks the hardware support
for 128-bit SIMD, this value is `true`, and all SIMD operations will likely be
This value is `true`, when the compile-time target has the hardware support for
at least 128-bit (or wider) SIMD. If the compile-time target lacks the hardware support
for 128-bit SIMD, this value is `false`, and all SIMD operations will likely be
emulated.
*/
IS_EMULATED :: true when (ODIN_ARCH == .amd64 || ODIN_ARCH == .i386) && !intrinsics.has_target_feature("sse2") else
true when (ODIN_ARCH == .arm64 || ODIN_ARCH == .arm32) && !intrinsics.has_target_feature("neon") else
true when (ODIN_ARCH == .wasm64p32 || ODIN_ARCH == .wasm32) && !intrinsics.has_target_feature("simd128") else
true when (ODIN_ARCH == .riscv64) && !intrinsics.has_target_feature("v") else
false
HAS_HARDWARE_SIMD :: runtime.HAS_HARDWARE_SIMD
/*
Vector of 16 `u8` lanes (128 bits).