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| author | Richard Guenther <rguenther@suse.de> | 2008-07-07 15:11:29 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2008-07-07 15:11:29 +0000 |
| commit | 115340c79fdd40c3b8c809ef81a1deebec0a2500 (patch) | |
| tree | afd0ad862ac893fe8d11c0aaafd31d7e4f0e6d42 /gcc/tree-tailcall.c | |
| parent | 511e41e54d2f5bd036740518781e126ecccbad49 (diff) | |
| download | gcc-115340c79fdd40c3b8c809ef81a1deebec0a2500.tar.gz | |
re PR target/36713 (r137252 breaks -O2 optimization on x86_64-unknown-linux-gnu)
2008-07-07 Richard Guenther <rguenther@suse.de>
PR tree-optimization/36713
* tree-flow-inline.h (is_call_used): New function.
* tree-nrv.c (dest_safe_for_nrv_p): Use it.
* tree-tailcall.c (suitable_for_tail_opt_p): Likewise.
* tree-outof-ssa.c (create_temp): Set call-used flag if required.
From-SVN: r137571
Diffstat (limited to 'gcc/tree-tailcall.c')
| -rw-r--r-- | gcc/tree-tailcall.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/gcc/tree-tailcall.c b/gcc/tree-tailcall.c index 09a2eafe119..92127b4b7af 100644 --- a/gcc/tree-tailcall.c +++ b/gcc/tree-tailcall.c @@ -138,14 +138,14 @@ suitable_for_tail_opt_p (void) if (cfun->stdarg) return false; - /* No local variable nor structure field should be call-clobbered. We + /* No local variable nor structure field should be call-used. We ignore any kind of memory tag, as these are not real variables. */ FOR_EACH_REFERENCED_VAR (var, rvi) { if (!is_global_var (var) && !MTAG_P (var) - && (gimple_aliases_computed_p (cfun) ? is_call_clobbered (var) + && (gimple_aliases_computed_p (cfun)? is_call_used (var) : TREE_ADDRESSABLE (var))) return false; } |