Re: optimization/8423: CSE1 not propagating __builtin_constant_p enough

Re: optimization/8423: CSE1 not propagating __builtin_constant_p enough

[ebotcazou]

Synopsis: CSE1 not propagating __builtin_constant_p enough

State-Changed-From-To: open->analyzed
State-Changed-By: ebotcazou
State-Changed-When: Tue Feb 18 14:39:33 2003
State-Changed-Why:
    Already partially fixed.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=8423

Re: optimization/8423: CSE1 not propagating __builtin_constant_p enough

[sayle]

Synopsis: CSE1 not propagating __builtin_constant_p enough

State-Changed-From-To: analyzed->closed
State-Changed-By: sayle
State-Changed-When: Sat Mar  1 15:08:33 2003
State-Changed-Why:
    This has now been fixed on mainline by my recent set of
    __builtin_constant_p patches.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=8423

optimization/8423: CSE1 not propagating __builtin_constant_p enough

[arjanv]

>Number:         8423
>Category:       optimization
>Synopsis:       CSE1 not propagating __builtin_constant_p enough
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Nov 01 06:56:00 PST 2002
>Closed-Date:
>Last-Modified:
>Originator:     arjanv@redhat.com
>Release:        unknown-1.0
>Organization:
>Environment:

>Description:
Older versions of gcc didn't propagate constant info enough in some cases (see attached testcase). This PR is filed to add the test as a regression test, not so much as to get it re-fixed
>How-To-Repeat:
compile with -O2; both printf's should claim builtin but soome older gcc's didn't
>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted:
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