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From: "ams at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/50318] New: ICE optimizing widening multiply-and-accumulate Date: Wed, 07 Sep 2011 11:08:00 -0000 [thread overview] Message-ID: <bug-50318-4@http.gcc.gnu.org/bugzilla/> (raw) http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50318 Bug #: 50318 Summary: ICE optimizing widening multiply-and-accumulate Classification: Unclassified Product: gcc Version: 4.7.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization AssignedTo: unassigned@gcc.gnu.org ReportedBy: ams@gcc.gnu.org The widening mulitply pass creates a bad expression when using constants with types that don't match the other operand: (This testcase is reduced from the Linux kernel) long long test (unsigned int sec, unsigned long long nsecs) { return (long long)(long)sec * 1000000000L + (long long)(unsigned long)nsecs; } dummy.i: In function ‘test’: dummy.i:2:11: error: type mismatch in widening multiply-accumulate expression long long int unsigned int long int long long int D.4708_8 = WIDEN_MULT_PLUS_EXPR <sec_1(D), 1000000000, D.4720_11>; dummy.i:2:11: internal compiler error: verify_gimple failed
next reply other threads:[~2011-09-07 11:07 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2011-09-07 11:08 ams at gcc dot gnu.org [this message] 2011-09-07 11:09 ` [Bug tree-optimization/50318] " ams at gcc dot gnu.org 2011-09-08 19:52 ` ams at gcc dot gnu.org 2011-09-08 20:23 ` ams at gcc dot gnu.org
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