From 3cb99ad4410ce56844d05481b09b9b79e970a904 Mon Sep 17 00:00:00 2001
From: Andrew Noyes <andrew@weaselab.dev>
Date: Tue, 23 Jan 2024 16:46:52 -0800
Subject: [PATCH] Unbotch x86 simd implementations

---
 ConflictSet.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/ConflictSet.cpp b/ConflictSet.cpp
index c1ac8a6..e86bd37 100644
--- a/ConflictSet.cpp
+++ b/ConflictSet.cpp
@@ -578,7 +578,7 @@ int firstNonNeg1(const int8_t x[16]) {
   uint32_t bitfield = _mm_movemask_epi8(results) ^ 0xffff;
   if (bitfield == 0)
     return -1;
-  return __builtin_clz(bitfield);
+  return __builtin_ctz(bitfield);
 }
 
 int lastNonNeg1(const int8_t x[16]) {
@@ -589,7 +589,7 @@ int lastNonNeg1(const int8_t x[16]) {
   uint32_t bitfield = _mm_movemask_epi8(results) ^ 0xffff;
   if (bitfield == 0)
     return -1;
-  return 15 - __builtin_ctz(bitfield);
+  return 31 - __builtin_clz(bitfield);
 }
 #endif