http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48973
--- Comment #15 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-07-19 19:28:44 UTC --- Author: jakub Date: Tue Jul 19 19:28:41 2011 New Revision: 176482 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=176482 Log: Backport from mainline 2011-05-23 Jakub Jelinek <ja...@redhat.com> PR middle-end/48973 * expr.c (expand_expr_real_1) <case LT_EXPR>: If do_store_flag failed and the comparison has a single bit signed type, use constm1_rtx instead of const1_rtx for true value. (do_store_flag): If TREE_TYPE (exp) is single bit signed type, disable single bit test optimization, pass -1 instead of 1 as last parameter to emit_store_flag and use constm1_rtx instead of const1_rtx as true value. * gcc.c-torture/execute/pr48973-1.c: New test. * gcc.c-torture/execute/pr48973-2.c: New test. Added: branches/gcc-4_4-branch/gcc/testsuite/gcc.c-torture/execute/pr48973-1.c branches/gcc-4_4-branch/gcc/testsuite/gcc.c-torture/execute/pr48973-2.c Modified: branches/gcc-4_4-branch/gcc/ChangeLog branches/gcc-4_4-branch/gcc/expr.c branches/gcc-4_4-branch/gcc/testsuite/ChangeLog
