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Re: [PATCH][4.3][RFC] Disable field-sensitive aliasing at -O1 (fix PR36474)
On Mon, 9 Jun 2008, Paolo Bonzini wrote:
>
> > Thoughts? I'll see to not break any testcases, so eventually the
> > zero for max-fields-for-field-sensitive will become N << 100
>
> Being it impossible to backport fixed from 4.4, sounds wise (and I'd XFAIL the
> testcases, leaving N = 0).
It's a single testcase that "fails" (a correctness one that scans for
'SFT'):
FAIL: gcc.dg/tree-ssa/alias-15.c scan-tree-dump salias "SFT.5 created for
var m offset 128"
FAIL: gcc.dg/tree-ssa/alias-15.c scan-tree-dump-times salias "VUSE <SFT.5_" 2
I'll just backport the "fix" from the trunk for that one. Otherwise
bootstrapped and tested on x86_64-unknown-linux-gnu.
I'll wait some more for opinions in general though.
Richard.