From b98f10c08af4f3c438914c200d8845731057dd2b Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?M=C3=A5ns=20Rullg=C3=A5rd?= Date: Sat, 25 Oct 2008 18:54:23 +0000 Subject: [PATCH] ARM: faster ARMv6 FASTDIV() Originally committed as revision 15712 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavutil/internal.h | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/libavutil/internal.h b/libavutil/internal.h index aaecab77a5..5ade1affa7 100644 --- a/libavutil/internal.h +++ b/libavutil/internal.h @@ -140,11 +140,12 @@ extern const uint32_t ff_inverse[256]; #elif defined(HAVE_ARMV6) static inline av_const int FASTDIV(int a, int b) { - int r; - __asm__ volatile("cmp %2, #0 \n\t" - "smmul %0, %1, %2 \n\t" - "rsblt %0, %0, #0 \n\t" - : "=r"(r) : "r"(a), "r"(ff_inverse[b])); + int r, t; + __asm__ volatile("cmp %3, #2 \n\t" + "ldr %1, [%4, %3, lsl #2] \n\t" + "lsrle %0, %2, #1 \n\t" + "smmulgt %0, %1, %2 \n\t" + : "=&r"(r), "=&r"(t) : "r"(a), "r"(b), "r"(ff_inverse)); return r; } #elif defined(ARCH_ARMV4L)