Based on patch by Francisco Blas Izquierdo Riera Commit message partly taken from carl
fixes a compilation error in mlpdsp_init.c with -fstack-check and some gcc compilers (I reproduced the issue with gcc 4.7.3) by simplifying the code. See also https://bugs.gentoo.org/show_bug.cgi?id=471756 $ make libavcodec/x86/mlpdsp_init.o libavcodec/x86/mlpdsp_init.c: In function ‘mlp_filter_channel_x86’: libavcodec/x86/mlpdsp_init.c:142:5: error: can’t find a register in class ‘GENERAL_REGS’ while reloading ‘asm’ libavcodec/x86/mlpdsp_init.c:142:5: error: ‘asm’ operand has impossible constraints 4551 -> 4509 dezicycles Signed-off-by: Michael Niedermayer <michae...@gmx.at> --- libavcodec/x86/mlpdsp_init.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/libavcodec/x86/mlpdsp_init.c b/libavcodec/x86/mlpdsp_init.c index 550a41d..9c788bd 100644 --- a/libavcodec/x86/mlpdsp_init.c +++ b/libavcodec/x86/mlpdsp_init.c @@ -148,8 +148,8 @@ static void mlp_filter_channel_x86(int32_t *state, const int32_t *coeff, FIRMUL (ff_mlp_firorder_6, 0x14 ) FIRMUL (ff_mlp_firorder_5, 0x10 ) FIRMUL (ff_mlp_firorder_4, 0x0c ) - FIRMULREG(ff_mlp_firorder_3, 0x08,10) - FIRMULREG(ff_mlp_firorder_2, 0x04, 9) + FIRMUL (ff_mlp_firorder_3, 0x08 ) + FIRMUL (ff_mlp_firorder_2, 0x04 ) FIRMULREG(ff_mlp_firorder_1, 0x00, 8) LABEL_MANGLE(ff_mlp_firorder_0)":\n\t" "jmp *%6 \n\t" @@ -178,8 +178,6 @@ static void mlp_filter_channel_x86(int32_t *state, const int32_t *coeff, : /* 4*/"r"((x86_reg)mask), /* 5*/"r"(firjump), /* 6*/"r"(iirjump) , /* 7*/"c"(filter_shift) , /* 8*/"r"((int64_t)coeff[0]) - , /* 9*/"r"((int64_t)coeff[1]) - , /*10*/"r"((int64_t)coeff[2]) : "rax", "rdx", "rsi" #else /* ARCH_X86_32 */ /* 3*/"+m"(blocksize) -- 1.7.9.5 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
