From eba895c224bb591ad7816f7135c971271c37e0d8 Mon Sep 17 00:00:00 2001
From: Niels Lohmann <mail@nlohmann.me>
Date: Fri, 9 Oct 2026 16:11:28 +0200
Subject: [PATCH] Use the portable string scan on non-x86 targets that define
 __SSE2__

WebAssembly with -msse2 defines __SSE2__, but has no <cpuid.h> or x86 intrinsics headers.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>
---
 include/nlohmann/detail/view/simd.hpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/nlohmann/detail/view/simd.hpp b/include/nlohmann/detail/view/simd.hpp
index 4c99c7072..13ad9c59c 100644
--- a/include/nlohmann/detail/view/simd.hpp
+++ b/include/nlohmann/detail/view/simd.hpp
@@ -35,7 +35,8 @@
 #else
     #define NLOHMANN_VIEW_NEON 0
 #endif
-#if !defined(JSON_VIEW_NO_SIMD) && !NLOHMANN_VIEW_NEON && (defined(__SSE2__) || defined(_M_X64) || (defined(_M_IX86_FP) && _M_IX86_FP >= 2))
+// (x86 only: other targets can define __SSE2__ as well, e.g., WebAssembly with -msse2, but have no <cpuid.h>)
+#if !defined(JSON_VIEW_NO_SIMD) && !NLOHMANN_VIEW_NEON && (defined(__x86_64__) || defined(__i386__) || defined(_M_X64) || defined(_M_IX86)) && (defined(__SSE2__) || defined(_M_X64) || (defined(_M_IX86_FP) && _M_IX86_FP >= 2))
     #include <emmintrin.h>
     #define NLOHMANN_VIEW_SSE2 1
 #else