diff options
Diffstat (limited to 'ortho/gcc/ortho-lang.c')
| -rw-r--r-- | ortho/gcc/ortho-lang.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/ortho/gcc/ortho-lang.c b/ortho/gcc/ortho-lang.c index b46c0123f..904bfa46d 100644 --- a/ortho/gcc/ortho-lang.c +++ b/ortho/gcc/ortho-lang.c @@ -23,6 +23,9 @@ #include "tree-pass.h" #include "tree-dump.h" +// temp for debugging +// #include "stdio.h" + /* TODO: * remove stmt_list_stack, save in if/case/loop block * Re-add -v (if necessary) @@ -307,6 +310,38 @@ ortho_init (void) BUILT_IN_STACK_RESTORE, BUILT_IN_NORMAL, NULL, NULL_TREE), true); } + /* Test and (if necessary) repair BUILT_IN_UNREACHABLE builtin. + FIXME: Re-evaluate this and remove when upstream gcc has fixed the + underlying problem : gcc4.8.2 segfaults compiling with -O2, + during fn "void unloop_loops" in tree-ssa-loop-ivcanon.c */ + { + tree func_type = build_function_type (ptr_type_node, NULL_TREE); + + if (builtin_decl_implicit_p (BUILT_IN_UNREACHABLE)) + { + // printf("BUILT_IN_UNREACHABLE function is available\n"); + } + else + { + tree builtin_f = builtin_decl_explicit (BUILT_IN_UNREACHABLE); + // printf("No implicit BUILT_IN_UNREACHABLE function : repairing!\n"); + debug_tree(builtin_f); + if (builtin_f == NULL_TREE) + { + // printf("Adding BUILT_IN_UNREACHABLE function\n"); + set_builtin_decl (BUILT_IN_UNREACHABLE, + builtin_function("__builtin_unreachable", func_type, + BUILT_IN_UNREACHABLE, BUILT_IN_NORMAL, NULL, NULL_TREE), + true); + } + else + { + // printf("Making BUILT_IN_UNREACHABLE function implicit\n"); + set_builtin_decl_implicit_p (BUILT_IN_UNREACHABLE, true); + } + } + } + { REAL_VALUE_TYPE v; |