Set /Os for some 32 bit MS compilers (fixes tesseract-ocr#3769)

Signed-off-by: Stefan Weil <[email protected]>
p12tic · Mar 31, 2022 · facd55a · facd55a
1 parent fd48287
commit facd55a
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/src/arch/intsimdmatrixavx2.cpp b/src/arch/intsimdmatrixavx2.cpp
@@ -27,6 +27,14 @@
 #  include <cstdint>
 #  include <vector>
 
+#  if defined(_MSC_VER) && _MSC_VER >= 1925 && _MSC_VER <= 1929 && \
+      defined(_WIN32) && !defined(_WIN64)
+// Optimize for size (/Os) instead of using the default optimization for some
+// versions of the 32 bit Visual Studio compiler which generate buggy code.
+#    pragma optimize("", off)
+#    pragma optimize("s", on)
+#  endif
+
 namespace tesseract {
 
 // Number of outputs held in each register. 8 x 32 bit ints.