RE: [Gcl-devel] Windows - Instability in universe.lsp

[Mike Thomas]

Hi all.

For the record in case someone gets a chance over the weekend, I've narrowed
the optimisatios which may cause a crash down to just a few:

| I will also break the optimisations down into their individual components
| per your earlier suggestion.  The above three tests suggest

Working with GCL stable branch, gcc 3.3.3, binutils 2.15.90, PIV 512 MB
WinXP, the ANSI test builds with 305 errors if

==============================================================
O2FLAGS = O3FLAGS =

O3FLAGS = -fdefer-pop -fmerge-constants -fthread-jumps -floop-optimize \
 -fcrossjumping -fif-conversion -fif-conversion2 -fdelayed-branch \
 -fguess-branch-probability -fcprop-registers -fomit-frame-pointer \
 -fforce-mem  -foptimize-sibling-calls -fstrength-reduce -fcse-follow-jumps
\
 -fcse-skip-blocks -frerun-cse-after-loop  -frerun-loop-opt \
 -fgcse   -fgcse-lm   -fgcse-sm -freorder-blocks -falign-functions \
 -falign-jumps -falign-loops -falign-labels \
 -fdelete-null-pointer-checks -fexpensive-optimizations -fregmove \
 -fschedule-insns  -fschedule-insns2 -fsched-interblock -fsched-spec

==============================================================

Adding this group of optimisations causes the ANSI test build to crash:

==============================================================
#          -fcaller-saves \
#          -fpeephole2 \
#          -fstrict-aliasing \
#   -freorder-functions \

==============================================================

I'll try and narrow this down over the weekend but no guarantees so please
feel free to investigate and let us know!

Cheers

Mike Thomas.