[gcc/devel/autopar_devel] c++: Remove redundant code.

[gcc/devel/autopar_devel] c++: Remove redundant code.

[Giuliano Belinassi]

https://gcc.gnu.org/g:83da5eae73e5ea05f5abf1e9760ae8b0daafa023

commit 83da5eae73e5ea05f5abf1e9760ae8b0daafa023
Author: Jason Merrill <jason@redhat.com>
Date:   Mon May 11 14:05:46 2020 -0400

    c++: Remove redundant code.
    
    We walk the lambda captures in cp_walk_subtrees, so we don't also need to
    walk them here.
    
    gcc/cp/ChangeLog
    2020-05-11  Jason Merrill  <jason@redhat.com>
    
            * pt.c (find_parameter_packs_r) [LAMBDA_EXPR]: Remove redundant
            walking of capture list.

Diff:
---
 gcc/cp/ChangeLog | 5 +++++
 gcc/cp/pt.c      | 6 ------
 2 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index f92c6416ee6..adbe287c5dc 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,8 @@
+2020-05-11  Jason Merrill  <jason@redhat.com>
+
+	* pt.c (find_parameter_packs_r) [LAMBDA_EXPR]: Remove redundant
+	walking of capture list.
+
 2020-05-11  Jason Merrill  <jason@redhat.com>
 
 	* cp-tree.h (LOOKUP_EXPLICIT_TMPL_ARGS): Remove.
diff --git a/gcc/cp/pt.c b/gcc/cp/pt.c
index c6091127225..112426af72a 100644
--- a/gcc/cp/pt.c
+++ b/gcc/cp/pt.c
@@ -3988,18 +3988,12 @@ find_parameter_packs_r (tree *tp, int *walk_subtrees, void* data)
 
     case LAMBDA_EXPR:
       {
-	/* Look at explicit captures.  */
-	for (tree cap = LAMBDA_EXPR_CAPTURE_LIST (t);
-	     cap; cap = TREE_CHAIN (cap))
-	  cp_walk_tree (&TREE_VALUE (cap), &find_parameter_packs_r, ppd,
-			ppd->visited);
 	/* Since we defer implicit capture, look in the parms and body.  */
 	tree fn = lambda_function (t);
 	cp_walk_tree (&TREE_TYPE (fn), &find_parameter_packs_r, ppd,
 		      ppd->visited);
 	cp_walk_tree (&DECL_SAVED_TREE (fn), &find_parameter_packs_r, ppd,
 		      ppd->visited);
-	*walk_subtrees = 0;
 	return NULL_TREE;
       }