commit 727007d6be2d750763c18c1ced21417ab7206ae2
author Sylvain Becker <sylvain.becker@gmail.com> Tue Jan 26 21:15:15 2021 +0100
committer Sylvain Becker <sylvain.becker@gmail.com> Tue Jan 26 21:15:15 2021 +0100
tree bf2dcee3175cb2dc8e187d1e94576451f9baef24
parent 19b0c06f3292ee1a4598e4a90fd9d4314a18c97c

SDL_SoftStretch: re-enable USE_ASM_STRETCH path for gcc >= 4.6

src/video/SDL_stretch.c

diff --git a/src/video/SDL_stretch.c b/src/video/SDL_stretch.c
index 28dd05e..1c99766 100644
--- a/src/video/SDL_stretch.c
+++ b/src/video/SDL_stretch.c
@@ -38,8 +38,14 @@
      (defined(__WATCOMC__) && defined(__386__)) || \
      (defined(__GNUC__) && defined(__i386__))) && SDL_ASSEMBLY_ROUTINES
 /* There's a bug with gcc 4.4.1 and -O2 where srcp doesn't get the correct
- * value after the first scanline.  FIXME? */
-/* #define USE_ASM_STRETCH */
+ * value after the first scanline. */
+/* This bug seems fixed, at least with gcc >= 4.6 */
+#  define USE_ASM_STRETCH
+#  if defined(__GNUC__)
+#    if (__GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 6))
+#      undef USE_ASM_STRETCH
+#    endif
+#  endif
 #endif
 
 #ifdef USE_ASM_STRETCH