We fail to add referenced vars when inline copies are instantiated
from clones created from IPA-CP. That later leads to ICEs in
remove-unused-locals because var_ann has not been allocated.
Bootstrapped and tested on x86_64-unknown-linux-gnu, LTO bootstrapped.
Applied to trunk and branch.
Richard.
2012-05-07 Richard Guenther <rguent...@suse.de>
PR tree-optimization/53195
* tree-inline.c (setup_one_parameter): Properly add referenced
vars from the parameters new known value.
Index: gcc/tree-inline.c
===================================================================
--- gcc/tree-inline.c (revision 187228)
+++ gcc/tree-inline.c (working copy)
@@ -2607,6 +2607,17 @@ setup_one_parameter (copy_body_data *id,
/* Make gimplifier happy about this variable. */
DECL_SEEN_IN_BIND_EXPR_P (var) = 1;
+ /* We are eventually using the value - make sure all variables
+ referenced therein are properly recorded. */
+ if (value
+ && gimple_in_ssa_p (cfun)
+ && TREE_CODE (value) == ADDR_EXPR)
+ {
+ tree base = get_base_address (TREE_OPERAND (value, 0));
+ if (base && TREE_CODE (base) == VAR_DECL)
+ add_referenced_var (base);
+ }
+
/* If the parameter is never assigned to, has no SSA_NAMEs created,
we would not need to create a new variable here at all, if it
weren't for debug info. Still, we can just use the argument
