http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55845
--- Comment #5 from Venkataramanan <venkataramanan.kumar at amd dot com> 2013-01-04 09:12:09 UTC --- Hi Uros. Thank you for conforming. I suspected this is a problem with jump optimization. Uros what flag we need to pass to bypass the .jump2 pass? Regards, Venkat. -----Original Message----- From: ubizjak at gmail dot com [mailto:gcc-bugzi...@gcc.gnu.org] Sent: Friday, January 04, 2013 1:43 PM To: Kumar, Venkataramanan Subject: [Bug rtl-optimization/55845] 454.calculix miscompares with -march=btver2 -O3 -ffastmath -fschedule-insns -mvzeroupper for test data run http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55845 Uros Bizjak <ubizjak at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2013-01-04 Ever Confirmed|0 |1 --- Comment #4 from Uros Bizjak <ubizjak at gmail dot com> 2013-01-04 08:13:03 UTC --- Please note how unspec_volatile vzeroupper (insn 225) moves above conditional jump comparison, passing many instructions: _.c.218r.csa: ... 110: {r8:SI=r8:SI+r11:SI;clobber flags:CC;} REG_UNUSED flags:CC 111: flags:CCZ=cmp(bx:SI,r11:SI) REG_DEAD r11:SI REG_DEAD bx:SI 105: xmm2:V4DF=vec_select(vec_concat(xmm1:V4DF,xmm1:V4DF),parallel) 106: xmm1:V4DF=xmm1:V4DF+xmm2:V4DF REG_DEAD xmm2:V4DF 234: xmm1:V2DF=xmm1:V2DF 235: xmm1:DF=xmm1:DF 109: xmm0:DF=xmm0:DF+xmm1:DF REG_DEAD xmm1:DF 112: pc={(flags:CCZ==0)?L230:pc} REG_DEAD flags:CCZ REG_BR_PROB 0xd06 226: NOTE_INSN_BASIC_BLOCK 22 225: unspec/v[0] 43 113: L113: 114: NOTE_INSN_BASIC_BLOCK 23 ... _.c.219r.jump2: ... 110: {r8:SI=r8:SI+r11:SI;clobber flags:CC;} REG_UNUSED flags:CC 225: unspec/v[0] 43 111: flags:CCZ=cmp(bx:SI,r11:SI) REG_DEAD r11:SI REG_DEAD bx:SI 105: xmm2:V4DF=vec_select(vec_concat(xmm1:V4DF,xmm1:V4DF),parallel) 106: xmm1:V4DF=xmm1:V4DF+xmm2:V4DF REG_DEAD xmm2:V4DF 109: xmm0:DF=xmm0:DF+xmm1:DF REG_DEAD xmm1:DF 112: pc={(flags:CCZ==0)?L231:pc} REG_DEAD flags:CCZ REG_BR_PROB 0xd06 113: L113: 114: NOTE_INSN_BASIC_BLOCK 23 ... Confirmed as rtl-optimization infrastructure problem. -- Configure bugmail: http://gcc.gnu.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You reported the bug.
