Re: Call for help: when can compare_and_jump_seq produce sequences with control flow insns?

2007-02-20 Thread Serge Belyshev
Steven Bosscher [EMAIL PROTECTED] writes: Hello, ...[snip] So I'm looking for help here: Who can help me find a test case to trigger a verify_flow_info ICE in GCC with the above patch applied? Can people try this patch on their favorite target, and see if they can trigger a test suite

Re: Call for help: when can compare_and_jump_seq produce sequences with control flow insns?

2007-02-19 Thread Hans-Peter Nilsson
Date: Fri, 16 Feb 2007 18:26:10 +0100 From: Steven Bosscher [EMAIL PROTECTED] I have tested a small patch on i686, x86_64, ia64, mips, and sh: Index: loop-unroll.c === --- loop-unroll.c (revision 122011) +++

Call for help: when can compare_and_jump_seq produce sequences with control flow insns?

2007-02-16 Thread Steven Bosscher
Hello, As some folks perhaps have noticed, my effort to make gcc use cfglayout mode between expand and, roughly, sched1, have stagnated a bit. I am completely stuck on a problem that I basically can't trigger. In other words, I *know* I should expect problems if I make a certain change, but I