http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49489
Summary: [4.7 Regression] gcc.c-torture/execute/builtin-bitops-1.c fails on x86_64-linux Product: gcc Version: 4.7.0 Status: UNCONFIRMED Keywords: wrong-code Severity: normal Priority: P3 Component: middle-end AssignedTo: ja...@gcc.gnu.org ReportedBy: ja...@gcc.gnu.org Target: x86_64-linux __builtin_clrsb is broken on x86_64 (and other targets where it is only supported by a library call in DImode).