------- Additional Comments From pinskia at gcc dot gnu dot org 2004-10-18 00:26 ------- Here is some more with --enable-intermodule which means a huge amount more inlining: /Users/pinskia/src/local/gcc/gcc/cfgbuild.c: In function 'make_edges': /Users/pinskia/src/local/gcc/gcc/cfgbuild.c:289: warning: 'tmp' may be used uninitialized in this function /Users/pinskia/src/local/gcc/gcc/jump.c: In function 'delete_related_insns': /Users/pinskia/src/local/gcc/gcc/jump.c:1390: warning: 'lab_next' may be used uninitialized in this function /Users/pinskia/src/local/gcc/gcc/cfgrtl.c: In function 'cfg_layout_delete_block': /Users/pinskia/src/local/gcc/gcc/cfgrtl.c:369: warning: 'tmp' may be used uninitialized in this function /Users/pinskia/src/local/gcc/gcc/cfgrtl.c: In function 'rtl_delete_block': /Users/pinskia/src/local/gcc/gcc/cfgrtl.c:369: warning: 'tmp' may be used uninitialized in this function /Users/pinskia/src/local/gcc/gcc/tree-ssa-dom.c: In function 'simplify_cond_and_lookup_avail_expr': /Users/pinskia/src/local/gcc/gcc/tree-ssa-dom.c:1912: warning: 'cond_inverted' may be used uninitialized in this function /Users/pinskia/src/local/gcc/gcc/tree-ssa-dom.c:1911: warning: 'cond_low' may be used uninitialized in this function /Users/pinskia/src/local/gcc/gcc/tree-ssa-dom.c:1911: warning: 'cond_high' may be used uninitialized in this function /Users/pinskia/src/local/gcc/gcc/tree-ssa-dom.c:2015: warning: 'tmp_low' may be used uninitialized in this function /Users/pinskia/src/local/gcc/gcc/tree-ssa-dom.c:2015: warning: 'tmp_high' may be used uninitialized in this function /Users/pinskia/src/local/gcc/gcc/tree-ssa-loop-ivopts.c: In function 'get_computation_at': /Users/pinskia/src/local/gcc/gcc/tree-ssa-loop-ivopts.c:2158: warning: 'ratioi' may be used uninitialized in this function /Users/pinskia/src/local/gcc/gcc/var-tracking.c: In function 'vt_initialize': /Users/pinskia/src/local/gcc/gcc/var-tracking.c:2500: warning: 'decl' may be used uninitialized in this function /Users/pinskia/src/local/gcc/gcc/var-tracking.c:2501: warning: 'offset' may be used uninitialized in this function /Users/pinskia/src/local/gcc/gcc/cfgcleanup.c: In function 'try_crossjump_to_edge': /Users/pinskia/src/local/gcc/gcc/cfgcleanup.c:1358: warning: 'table1' may be used uninitialized in this function /Users/pinskia/src/local/gcc/gcc/cfgcleanup.c:1357: warning: 'label1' may be used uninitialized in this function /Users/pinskia/src/local/gcc/gcc/cfgcleanup.c:1358: warning: 'table2' may be used uninitialized in this function /Users/pinskia/src/local/gcc/gcc/cfgcleanup.c:1357: warning: 'label2' may be used uninitialized in this function /Users/pinskia/src/local/gcc/gcc/cfgcleanup.c:1572: warning: 'label1' may be used uninitialized in this function /Users/pinskia/src/local/gcc/gcc/cfgcleanup.c:1572: warning: 'label2' may be used uninitialized in this function /Users/pinskia/src/local/gcc/gcc/cfgrtl.c: In function 'redirect_branch_edge': /Users/pinskia/src/local/gcc/gcc/cfgrtl.c:871: warning: 'tmp' may be used uninitialized in this function /Users/pinskia/src/local/gcc/gcc/cfgrtl.c: In function 'force_nonfallthru_and_redirect': /Users/pinskia/src/local/gcc/gcc/cfgrtl.c:993: warning: 'note' may be used uninitialized in this function /Users/pinskia/src/local/gcc/gcc/cfgrtl.c: In function 'try_redirect_by_replacing_jump': /Users/pinskia/src/local/gcc/gcc/cfgrtl.c:772: warning: 'table' may be used uninitialized in this function /Users/pinskia/src/local/gcc/gcc/cfgrtl.c:772: warning: 'label' may be used uninitialized in this function /Users/pinskia/src/local/gcc/gcc/cfgcleanup.c: In function 'try_optimize_cfg': /Users/pinskia/src/local/gcc/gcc/cfgcleanup.c:729: warning: 'table' may be used uninitialized in this function /Users/pinskia/src/local/gcc/gcc/cfgcleanup.c:729: warning: 'label' may be used uninitialized in this function /Users/pinskia/src/local/gcc/gcc/cse.c: In function 'fold_rtx': /Users/pinskia/src/local/gcc/gcc/cse.c:3224: warning: 'next' may be used uninitialized in this function /Users/pinskia/src/local/gcc/gcc/tree-ssa-loop-ivopts.c: In function 'get_computation_cost_at': /Users/pinskia/src/local/gcc/gcc/tree-ssa-loop-ivopts.c:2802: warning: 'ratio' may be used uninitialized in this function /Users/pinskia/src/local/gcc/gcc/value-prof.c: In function 'rtl_value_profile_transformations': /Users/pinskia/src/local/gcc/gcc/value-prof.c:929: warning: 'write' may be used uninitialized in this function
Most of these come from inlining tablejump_p. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16865
