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[Bug tree-optimization/24997] [4.1/4.2 regression] ICE with -ftree-vectorize
- From: "amodra at bigpond dot net dot au" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 24 Nov 2005 08:59:05 -0000
- Subject: [Bug tree-optimization/24997] [4.1/4.2 regression] ICE with -ftree-vectorize
- References: <bug-24997-7737@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #9 from amodra at bigpond dot net dot au 2005-11-24 08:59 -------
Indeed it's not a stack slot. Instead, reg 1824 is an invariant, equal to
sfp+16512. Code in reload1.c:eliminate_regs_1 substitutes r1 for sfp, then
reorganises the order of the additions, so we get (r1+r11)+const not
(r1+const)+r11. This of course isn't a valid address on powerpc, where indexed
addresses can't take an offset.
In case it isn't obvious, I'm a little lost. Hopefully my analysis will let
someone more familiar with reload sort this out.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24997