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| author | Alexandre Oliva <aoliva@redhat.com> | 2011-06-04 10:08:09 +0000 |
|---|---|---|
| committer | Alexandre Oliva <aoliva@gcc.gnu.org> | 2011-06-04 10:08:09 +0000 |
| commit | 047d33a0d40c52a5b227766c9af65d695d10b190 (patch) | |
| tree | c32f943e34979d31a3ae1aa747c6a3dc76e55dd4 | |
| parent | 57ee85b4394430954a5b2704dbf9d1852cd571fb (diff) | |
| download | gcc-047d33a0d40c52a5b227766c9af65d695d10b190.zip gcc-047d33a0d40c52a5b227766c9af65d695d10b190.tar.gz gcc-047d33a0d40c52a5b227766c9af65d695d10b190.tar.bz2 | |
re PR debug/48333 (-fcompare-debug failure (length) - "memmove" x "__builtin_memmove")
PR debug/48333
* calls.c (emit_call_1): Prefer the __builtin declaration of
builtin functions.
From-SVN: r174636
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/calls.c | 15 |
2 files changed, 20 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index cdb14e9..c7f031f 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2011-06-04 Alexandre Oliva <aoliva@redhat.com> + + PR debug/48333 + * calls.c (emit_call_1): Prefer the __builtin declaration of + builtin functions. + 2011-06-03 Diego Novillo <dnovillo@google.com> * lto-streamer-in.c (unpack_value_fields): Remove unneeded asserts. diff --git a/gcc/calls.c b/gcc/calls.c index 512ff0e..f5592c5 100644 --- a/gcc/calls.c +++ b/gcc/calls.c @@ -272,7 +272,20 @@ emit_call_1 (rtx funexp, tree fntree ATTRIBUTE_UNUSED, tree fndecl ATTRIBUTE_UNU funmem = gen_rtx_MEM (FUNCTION_MODE, funexp); if (fndecl && TREE_CODE (fndecl) == FUNCTION_DECL) - set_mem_expr (funmem, fndecl); + { + tree t = fndecl; + /* Although a built-in FUNCTION_DECL and its non-__builtin + counterpart compare equal and get a shared mem_attrs, they + produce different dump output in compare-debug compilations, + if an entry gets garbage collected in one compilation, then + adds a different (but equivalent) entry, while the other + doesn't run the garbage collector at the same spot and then + shares the mem_attr with the equivalent entry. */ + if (DECL_BUILT_IN_CLASS (t) == BUILT_IN_NORMAL + && built_in_decls[DECL_FUNCTION_CODE (t)]) + t = built_in_decls[DECL_FUNCTION_CODE (t)]; + set_mem_expr (funmem, t); + } else if (fntree) set_mem_expr (funmem, build_simple_mem_ref (CALL_EXPR_FN (fntree))); |