search for: reg1297

...is 257 while %reg1330's interval start is 258. The merging code expects them to be equal in this case where the source register is dead after the copy. If we look at another copy where the source is dead but was NOT spilled, we see something different: Examining copy 420%reg1057 = MOV64rr %reg1297<kill> MOV64rr %reg1057<d> %reg1297 Ok from regalloc Real regs %reg1057 = %reg1297 Intervals: %reg1057,0 = [422,1034:0) 0 at 422-(1034) %reg1297,0 = [402,420:0)[420,422:1)[1074,1096:2) 0 at 402-(421) 1@?-(422) 2 at 1074-(1095) Notice how the end of the second value for %reg1297 is t...

...3, %xmm0 pmaxsw %xmm0, %xmm3 pshuflw $$0x0E, %xmm3, %xmm0 pmaxsw %xmm0, %xmm3 pshuflw $$0x01, %xmm3, %xmm0 pmaxsw %xmm0, %xmm3 movd %xmm3, %eax movzb %al, %eax >, 0, 10, %EAX<imp-def>, 9, %reg1303<kill>, 9, %reg1308, 9, %reg1297<kill>, 9, %reg1299<kill>, 9, %reg1300<kill>, 2147483657, %EAX, 14, %EFLAGS<earlyclobber,imp-def,dead>, <!-1>; GR32:%reg1303,1308,1297,1299,1300 dbg:/home/liujia/ffmpeg-0.6/libavcodec/x86/mpegvideo_mmx_template.c:152:9 make: *** [libavcodec/x86/mpegvideo_mmx.o] Error 1...