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authorRye <rye@lindenlab.com>2025-02-10 14:08:56 -0500
committerRye <rye@lindenlab.com>2025-02-11 05:04:10 -0500
commit4ab2a80e6c8ab6c183143fbbca2c3386088caeb6 (patch)
tree2245da9ab8791495a4dc9048b046cd1b25d13382 /indra/llmath/llsimdmath.h
parent9fef2a114ea7eb6c42dd29e94ba5dc3451eb4560 (diff)
Use SSE2NEON to emulate SSE intrinsics when building against an ARM target
Diffstat (limited to 'indra/llmath/llsimdmath.h')
-rw-r--r--indra/llmath/llsimdmath.h14
1 files changed, 12 insertions, 2 deletions
diff --git a/indra/llmath/llsimdmath.h b/indra/llmath/llsimdmath.h
index 40953dc2e8..b27b034cf3 100644
--- a/indra/llmath/llsimdmath.h
+++ b/indra/llmath/llsimdmath.h
@@ -31,16 +31,26 @@
#error "Please include llmath.h before this file."
#endif
-#if ( ( LL_DARWIN || LL_LINUX ) && !(__SSE2__) ) || ( LL_WINDOWS && ( _M_IX86_FP < 2 && ADDRESS_SIZE == 32 ) )
-#error SSE2 not enabled. LLVector4a and related class will not compile.
+// the check for this error case must be split into multiple parts
+// because some versions of VS complain about '__SSE2__'
+#if ( ( LL_DARWIN || LL_LINUX ) )
+ #if !(__SSE2__) && !(__arm64__) && !(__aarch64__)
+ #error SSE2 not enabled. LLVector4a and related class will not compile.
+ #endif
+#elif ( LL_WINDOWS && ( _M_IX86_FP < 2 && ADDRESS_SIZE == 32 ) )
+ #error SSE2 not enabled. LLVector4a and related class will not compile.
#endif
#if !LL_WINDOWS
#include <stdint.h>
#endif
+#if defined(__arm64__) || defined(__aarch64__)
+#include "sse2neon.h"
+#else
#include <xmmintrin.h>
#include <emmintrin.h>
+#endif
#include "llmemory.h"
#include "llsimdtypes.h"