http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46531
Summary: Many benchmarks in SPEC CPU 2006 are miscompiled by LTO Product: gcc Version: 4.6.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: lto AssignedTo: unassig...@gcc.gnu.org ReportedBy: hjl.to...@gmail.com CC: rgue...@gcc.gnu.org On Linux/x86-64, revision 166871 with -O3 -funroll-loops -ffast-math -fwhole-program -flto=jobserver -fuse-linker-plugin and normal input gave Running 471.omnetpp ref peak lto default 471.omnetpp: copy 0 non-zero return code (exit code=1, signal=0) Running 483.xalancbmk ref peak lto default 483.xalancbmk: copy 0 non-zero return code (exit code=0, signal=11) Running 447.dealII ref peak lto default 447.dealII: copy 0 non-zero return code (exit code=0, signal=6) Running 450.soplex ref peak lto default 450.soplex: copy 0 non-zero return code (exit code=0, signal=9) 450.soplex: copy 0 non-zero return code (exit code=0, signal=11)