Add abm.odin

1 files changed, 20 insertions, 0 deletions

diff --git a/core/simd/x86/abm.odin b/core/simd/x86/abm.odin
new file mode 100644
index 000000000..f1898811f
--- /dev/null
+++ b/core/simd/x86/abm.odin
@@ -0,0 +1,20 @@
+//+build i386, amd64
+package simd_x86
+
+import "core:intrinsics"
+
+_lzcnt_u32 :: #force_inline proc "c" (x: u32) -> u32 {
+	return intrinsics.count_leading_zeros(x)
+}
+_popcnt32 :: #force_inline proc "c" (x: u32) -> i32 {
+	return i32(intrinsics.count_ones(x))
+}
+
+when ODIN_ARCH == .amd64 {
+	_lzcnt_u64 :: #force_inline proc "c" (x: u64) -> u64 {
+		return intrinsics.count_leading_zeros(x)
+	}
+	_popcnt64 :: #force_inline proc "c" (x: u64) -> i32 {
+		return i32(intrinsics.count_ones(x))
+	}
+}
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