[Bug tree-optimization/53265] Warn when undefined behavior implies smaller iteration count

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53265



Jakub Jelinek <jakub at gcc dot gnu.org> changed:



           What    |Removed                     |Added

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  Attachment #29639|0                           |1

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--- Comment #14 from Jakub Jelinek <jakub at gcc dot gnu.org> 2013-03-12 
11:25:01 UTC ---

Created attachment 29650

  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29650

gcc48-pr53265.patch



The last patch was missing == INTEGER_CST.  Still, this patch doesn't even

bootstrap, I'll attach here various snippets that need investigations.