On Mon, Jan 27, 2014 at 2:19 PM, Jakub Jelinek <ja...@redhat.com> wrote: > On Fri, Jan 24, 2014 at 10:11:20PM +0100, Jakub Jelinek wrote: >> On Wed, Jan 01, 2014 at 03:30:04PM +0100, Jan Hubicka wrote: >> > * config/i38/x86-tune.def: Disable X86_TUNE_ACCUMULATE_OUTGOING_ARGS >> > for generic and recent AMD chips >> > Index: config/i386/x86-tune.def >> > =================================================================== >> > --- config/i386/x86-tune.def (revision 206233) >> > +++ config/i386/x86-tune.def (working copy) >> > @@ -143,7 +143,7 @@ DEF_TUNE (X86_TUNE_REASSOC_FP_TO_PARALLE >> > regression on mgrid due to IRA limitation leading to unecessary >> > use of the frame pointer in 32bit mode. */ >> > DEF_TUNE (X86_TUNE_ACCUMULATE_OUTGOING_ARGS, "accumulate_outgoing_args", >> > - m_PPRO | m_P4_NOCONA | m_BONNELL | m_SILVERMONT | m_AMD_MULTIPLE | >> > m_GENERIC) >> > + m_PPRO | m_P4_NOCONA | m_BONNELL | m_SILVERMONT | m_ATHLON_K8) >> > >> > /* X86_TUNE_PROLOGUE_USING_MOVE: Do not use push/pop in prologues that are >> > considered on critical path. */ >> >> Are you sure this is a good idea even for 32-bit code (i.e. shouldn't we >> have separate tunables for 32-bit and 64-bit code)? >> I admit I haven't performed trunk bootstraps/regtests for 3 days, am doing >> x86_64 and i686 bootstraps/regtests concurrently and it is yes,rtl checking, >> but am quite surprised that compared to 3 days ago the bootstrap time of >> i686-linux (all,obj-c++,go) went up from about 70 minutes or so to 140 >> minutes today, >> while the x86_64-linux (all,obj-c++,go,ada) remained basically the same >> around 2 hours. This is on quad socket Quad-Core AMD Opteron(tm) Processor >> 8354, >> perhaps it is just extremely undesirable there. > > Most likely the big slowdown is var-tracking, at least stage2 insn-recog.o > (yes,rtl checking on i686-linux) took <= 23 minutes to compile and stage3 > <= 62 minutes, with 45 minutes from that only spent on compiling > insn-recog.o and nothing else.
There are also couple of debugging regressions: FAIL: gcc.dg/guality/pr54519-1.c -O2 line 20 y == 25 FAIL: gcc.dg/guality/pr54519-1.c -O2 line 20 z == 6 FAIL: gcc.dg/guality/pr54519-1.c -O2 line 23 y == 117 FAIL: gcc.dg/guality/pr54519-1.c -O2 line 23 z == 8 FAIL: gcc.dg/guality/pr54519-1.c -O3 -fomit-frame-pointer line 20 x == 36 FAIL: gcc.dg/guality/pr54519-1.c -O3 -fomit-frame-pointer line 20 y == 25 FAIL: gcc.dg/guality/pr54519-1.c -O3 -fomit-frame-pointer line 20 z == 6 FAIL: gcc.dg/guality/pr54519-1.c -O3 -g line 20 x == 36 FAIL: gcc.dg/guality/pr54519-1.c -O3 -g line 20 y == 25 FAIL: gcc.dg/guality/pr54519-1.c -O3 -g line 20 z == 6 FAIL: gcc.dg/guality/pr54519-3.c -O2 -flto -fno-use-linker-plugin -flto-partition=none line 20 x == 36 FAIL: gcc.dg/guality/pr54519-3.c -O2 -flto -fno-use-linker-plugin -flto-partition=none line 23 x == 98 FAIL: gcc.dg/guality/pr54519-3.c -O2 line 20 x == 36 FAIL: gcc.dg/guality/pr54519-3.c -O2 line 20 y == 25 FAIL: gcc.dg/guality/pr54519-3.c -O2 line 20 z == 6 FAIL: gcc.dg/guality/pr54519-3.c -O2 line 23 x == 98 FAIL: gcc.dg/guality/pr54519-3.c -O2 line 23 y == 117 FAIL: gcc.dg/guality/pr54519-3.c -O2 line 23 z == 8 FAIL: gcc.dg/guality/pr54519-3.c -O3 -fomit-frame-pointer line 20 x == 36 FAIL: gcc.dg/guality/pr54519-3.c -O3 -fomit-frame-pointer line 20 y == 25 FAIL: gcc.dg/guality/pr54519-3.c -O3 -fomit-frame-pointer line 20 z == 6 FAIL: gcc.dg/guality/pr54519-3.c -O3 -fomit-frame-pointer line 23 x == 98 FAIL: gcc.dg/guality/pr54519-3.c -O3 -fomit-frame-pointer line 23 y == 117 FAIL: gcc.dg/guality/pr54519-3.c -O3 -fomit-frame-pointer line 23 z == 8 FAIL: gcc.dg/guality/pr54519-3.c -O3 -g line 20 x == 36 FAIL: gcc.dg/guality/pr54519-3.c -O3 -g line 20 y == 25 FAIL: gcc.dg/guality/pr54519-3.c -O3 -g line 20 z == 6 FAIL: gcc.dg/guality/pr54519-3.c -O3 -g line 23 x == 98 FAIL: gcc.dg/guality/pr54519-3.c -O3 -g line 23 y == 117 FAIL: gcc.dg/guality/pr54519-3.c -O3 -g line 23 z == 8 FAIL: gcc.dg/guality/pr54693-2.c -O3 -fomit-frame-pointer -funroll-all-loops -finline-functions line 21 i == v + 1 FAIL: gcc.dg/guality/pr54693-2.c -O3 -fomit-frame-pointer -funroll-loops lin -- H.J.
