diff options
Diffstat (limited to 'gcc/cfgexpand.c')
| -rw-r--r-- | gcc/cfgexpand.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/gcc/cfgexpand.c b/gcc/cfgexpand.c index e55467a..1990e10 100644 --- a/gcc/cfgexpand.c +++ b/gcc/cfgexpand.c @@ -2551,10 +2551,25 @@ expand_call_stmt (gcall *stmt) return; } + /* If this is a call to a built-in function and it has no effect other + than setting the lhs, try to implement it using an internal function + instead. */ + decl = gimple_call_fndecl (stmt); + if (gimple_call_lhs (stmt) + && !gimple_has_side_effects (stmt) + && (optimize || (decl && called_as_built_in (decl)))) + { + internal_fn ifn = replacement_internal_fn (stmt); + if (ifn != IFN_LAST) + { + expand_internal_call (ifn, stmt); + return; + } + } + exp = build_vl_exp (CALL_EXPR, gimple_call_num_args (stmt) + 3); CALL_EXPR_FN (exp) = gimple_call_fn (stmt); - decl = gimple_call_fndecl (stmt); builtin_p = decl && DECL_BUILT_IN (decl); /* If this is not a builtin function, the function type through which the |