[FFmpeg-devel] [PATCH 1/2] postproc/postprocess_template: Avoid using %4 for the threshold compare

[Michael Niedermayer]

This avoids problems if %4 is the stack pointer
the constraints do not allow %4 to be the stack pointer but gcc 9 may
no longer support specifying such constraints

Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
---
 libpostproc/postprocess_template.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/libpostproc/postprocess_template.c b/libpostproc/postprocess_template.c
index 0a43989266..485eb5cfc0 100644
--- a/libpostproc/postprocess_template.c
+++ b/libpostproc/postprocess_template.c
@@ -1184,10 +1184,10 @@ FIND_MIN_MAX((%0, %1, 8))
 #endif
         "movq %%mm6, %%mm0                      \n\t" // max
         "psubb %%mm7, %%mm6                     \n\t" // max - min
-        "push %4                              \n\t"
-        "movd %%mm6, %k4                        \n\t"
-        "cmpb "MANGLE(deringThreshold)", %b4    \n\t"
-        "pop %4                               \n\t"
+        "push %%"FF_REG_a"                      \n\t"
+        "movd %%mm6, %%eax                      \n\t"
+        "cmpb "MANGLE(deringThreshold)", %%al   \n\t"
+        "pop %%"FF_REG_a"                       \n\t"
         " jb 1f                                 \n\t"
         PAVGB(%%mm0, %%mm7)                           // a=(max + min)/2
         "punpcklbw %%mm7, %%mm7                 \n\t"
-- 
2.19.2