diff options
Diffstat (limited to 'gcc/cfgexpand.c')
| -rw-r--r-- | gcc/cfgexpand.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/gcc/cfgexpand.c b/gcc/cfgexpand.c index 4e622c0b9a0..de7a7b3fb0b 100644 --- a/gcc/cfgexpand.c +++ b/gcc/cfgexpand.c @@ -1610,9 +1610,15 @@ expand_used_vars (void) replace_ssa_name_symbol (var, (tree) *slot); } + /* Always allocate space for partitions based on VAR_DECLs. But for + those based on PARM_DECLs or RESULT_DECLs and which matter for the + debug info, there is no need to do so if optimization is disabled + because all the SSA_NAMEs based on these DECLs have been coalesced + into a single partition, which is thus assigned the canonical RTL + location of the DECLs. */ if (TREE_CODE (SSA_NAME_VAR (var)) == VAR_DECL) expand_one_var (var, true, true); - else + else if (DECL_IGNORED_P (SSA_NAME_VAR (var)) || optimize) { /* This is a PARM_DECL or RESULT_DECL. For those partitions that contain the default def (representing the parm or result itself) |