On Linux/x86, revision 159557: http://gcc.gnu.org/ml/gcc-cvs/2010-05/msg00609.html
caused: FAIL: gcc.dg/tree-ssa/prefetch-3.c scan-tree-dump-times aprefetch "unroll factor 4" 1 FAIL: gcc.dg/tree-ssa/prefetch-5.c scan-tree-dump-times aprefetch "Issued prefetch" 2 FAIL: gcc.dg/tree-ssa/prefetch-6.c scan-assembler-times prefetchnta 3 FAIL: gcc.dg/tree-ssa/prefetch-6.c scan-tree-dump-times aprefetch "Issued nontemporal prefetch" 3 FAIL: gcc.dg/tree-ssa/update-unroll-1.c scan-tree-dump-not aprefetch "SUCC: 7 .100.0%" -- Summary: [4.6 regression] New prefetch test failures Product: gcc Version: 4.6.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: middle-end AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: hjl dot tools at gmail dot com http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44203