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| author | Uros Bizjak <ubizjak@gmail.com> | 2016-01-08 17:13:18 +0100 |
|---|---|---|
| committer | Uros Bizjak <uros@gcc.gnu.org> | 2016-01-08 17:13:18 +0100 |
| commit | 5c07bed61da66d09c304a1e21023a8ee9a637c4b (patch) | |
| tree | 23b1fc7769734fa75e5f8a4353a4ea72d274c65a /gcc/symtab.c | |
| parent | 550c5f8a7e3e2487b06ddbe9da3dc65c5c7e00f1 (diff) | |
| download | gcc-5c07bed61da66d09c304a1e21023a8ee9a637c4b.zip gcc-5c07bed61da66d09c304a1e21023a8ee9a637c4b.tar.gz gcc-5c07bed61da66d09c304a1e21023a8ee9a637c4b.tar.bz2 | |
symtab.c (symtab_node::equal_address_to): Return -1 instead of 2 if we can't determine address equivalence.
* symtab.c (symtab_node::equal_address_to): Return -1 instead of 2
if we can't determine address equivalence.
* alias.c (compare_base_decl): Update for changed return value of
symtab_node::equal_address_to.
From-SVN: r232172
Diffstat (limited to 'gcc/symtab.c')
| -rw-r--r-- | gcc/symtab.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/gcc/symtab.c b/gcc/symtab.c index f7788be..308a489 100644 --- a/gcc/symtab.c +++ b/gcc/symtab.c @@ -1877,7 +1877,7 @@ symtab_node::nonzero_address () /* Return 0 if symbol is known to have different address than S2, Return 1 if symbol is known to have same address as S2, - return 2 otherwise. + return -1 otherwise. If MEMORY_ACCESSED is true, assume that both memory pointer to THIS and S2 is going to be accessed. This eliminates the situations when @@ -1941,7 +1941,7 @@ symtab_node::equal_address_to (symtab_node *s2, bool memory_accessed) /* If both symbols may resolve to NULL, we can not really prove them different. */ if (!memory_accessed && !nonzero_address () && !s2->nonzero_address ()) - return 2; + return -1; /* Except for NULL, functions and variables never overlap. */ if (TREE_CODE (decl) != TREE_CODE (s2->decl)) @@ -1949,7 +1949,7 @@ symtab_node::equal_address_to (symtab_node *s2, bool memory_accessed) /* If one of the symbols is unresolved alias, punt. */ if (rs1->alias || rs2->alias) - return 2; + return -1; /* If we have a non-interposale definition of at least one of the symbols and the other symbol is different, we know other unit can not interpose @@ -1976,7 +1976,7 @@ symtab_node::equal_address_to (symtab_node *s2, bool memory_accessed) We probably should be consistent and use this fact here, too, but for the moment return false only when we are called from the alias oracle. */ - return memory_accessed && rs1 != rs2 ? 0 : 2; + return memory_accessed && rs1 != rs2 ? 0 : -1; } /* Worker for call_for_symbol_and_aliases. */ |