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From: "giovannibajo at libero dot it" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/18437] New: vectorizer failed for matrix multiplication Date: Fri, 12 Nov 2004 01:22:00 -0000 [thread overview] Message-ID: <20041112012216.18437.giovannibajo@libero.it> (raw) Vectorizer fails to handle this: ---------------------------------------------------- #define align(x) __attribute__((align(x))) typedef float align(16) MATRIX[3][3]; void RotateMatrix(MATRIX ret, MATRIX a, MATRIX b) { int i, j; for (j = 0; j < 3; j++) for (i = 0; i < 3; i++) ret[j][i] = a[j][0] * b[0][i] + a[j][1] * b[1][i] + a[j][2] * b[2][i]; } ---------------------------------------------------- loop at bench.cc:33: not vectorized: unsupported scalar cycle. loop at bench.cc:33: bad scalar cycle. -- Summary: vectorizer failed for matrix multiplication Product: gcc Version: 4.0.0 Status: UNCONFIRMED Keywords: missed-optimization Severity: normal Priority: P2 Component: tree-optimization AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: giovannibajo at libero dot it CC: gcc-bugs at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18437
next reply other threads:[~2004-11-12 1:22 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2004-11-12 1:22 giovannibajo at libero dot it [this message] 2004-11-12 2:43 ` [Bug tree-optimization/18437] " pinskia at gcc dot gnu dot org 2005-02-11 19:16 ` pinskia at gcc dot gnu dot org 2005-09-20 17:44 ` pinskia at gcc dot gnu dot org
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