Bug 212798

Description Dimitry Andric 2016-09-18 17:07:05 UTC

Created attachment 174922 [details]
Add newlines to inline asm

In bug 212343, for the exp-run with clang 3.9.0, we encountered this error in multimedia/transcode [1]:

motion.c:353:4: error: no matching '.endr' in definition
          " pxor         %%mm0 , %%mm0;          /* clear mm0                                          */"
          ^
<inline asm>:1:466: note: instantiated into assembly here
         pxor         %mm0 , %mm0;          /* clear mm0                                          */ pcmpeqw      %mm6 , %mm6;          /* Build 7f7f7f7f7f7f7f in a register                 */ psrlw        $9    , %mm6;          /*                                                    */ packuswb     %mm6 , %mm6;          /*                                                    */                           ;          /*                                                    */ .rept 8                   ;          /*                                                    */ movq        (%esi), %mm1;          /* 8 Pixels from filtered frame to mm1                */ movq        (%edi), %mm2;          /* 8 Pixels from filtered frame to mm2 (displaced)    */ movq        (%eax), %mm3;          /* reference to mm3                                   */ psrlq        $1    , %mm1;          /* average source pixels                              */ psrlq        $1    , %mm2;          /* shift right by one (divide by two)                 */ pand         %mm6 , %mm1;          /* kill downshifted bits                              */ pand         %mm6 , %mm2;          /* kill downshifted bits                              */ paddusw      %mm2 , %mm1;          /* add up ...                                         */ movq         %mm3 , %mm4;          /* copy reference to mm4                              */ psubusb      %mm1 , %mm3;          /* positive differences between mm2 and mm1 */ psubusb      %mm4 , %mm1;          /* positive differences between mm1 and mm3 */ paddusb      %mm3 , %mm1;          /* mm1 now contains abs(mm1-mm2) */ paddusw      %mm1 , %mm0;          /* add result to mm0                                  */ addl         %ecx , %esi;          /* add framewidth to frameaddress                     */ addl         %ecx , %edi;          /* add framewidth to frameaddress                     */ addl         %ecx , %ecx;          /* add framewidth to frameaddress                     */ .endr                     ;          /*                                                    */                                      /*                                                    */ movq         %mm0 , calc_SAD_half_mmx.a@GOTOFF(%edx)   ;          /* make mm0 available to gcc ...                      */
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        ^
1 error generated.

For some reason, that particular inline assembly block does not have embedded newlines, and this trips up the .rept .endr processing.  Fix it by adding newlines.

[1] http://package18.nyi.freebsd.org/data/headi386PR212343-default/2016-09-11_07h04m19s/logs/errors/transcode-1.1.7_26.log