From d8debb1d8a53c120ed56ef3753afa3e9acaccded Mon Sep 17 00:00:00 2001 From: Jakub Jelinek Date: Fri, 21 Jan 2011 13:51:18 +0100 Subject: [PATCH] tree-ssa-live.c (remove_unused_scope_block_p): Don't remove DECL_IGNORED_P non-reg vars if they are used. * tree-ssa-live.c (remove_unused_scope_block_p): Don't remove DECL_IGNORED_P non-reg vars if they are used. From-SVN: r169083 --- gcc/ChangeLog | 5 +++++ gcc/tree-ssa-live.c | 7 +++++-- 2 files changed, 10 insertions(+), 2 deletions(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index dffe700995c..acb1eb7c35e 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2011-01-21 Jakub Jelinek + + * tree-ssa-live.c (remove_unused_scope_block_p): Don't remove + DECL_IGNORED_P non-reg vars if they are used. + 2011-01-21 Kai Tietz PR bootstrap/47215 diff --git a/gcc/tree-ssa-live.c b/gcc/tree-ssa-live.c index 0fa906b79c7..4880a1a7bbd 100644 --- a/gcc/tree-ssa-live.c +++ b/gcc/tree-ssa-live.c @@ -453,8 +453,11 @@ remove_unused_scope_block_p (tree scope) else if (TREE_CODE (*t) == VAR_DECL && DECL_HAS_VALUE_EXPR_P (*t)) unused = false; - /* Remove everything we don't generate debug info for. */ - else if (DECL_IGNORED_P (*t)) + /* Remove everything we don't generate debug info for. + Don't remove larger vars though, because BLOCK_VARS are + used also during expansion to determine which variables + might share stack space. */ + else if (DECL_IGNORED_P (*t) && is_gimple_reg (*t)) { *t = DECL_CHAIN (*t); next = t; -- 2.30.2