Hello.
This patch adds support for hard register variables in ICF and it's pre-approved
by Honza, I'm going to install the patch.
No regressing on x86_64-linux-pc.
Thanks,
Martin
>From eff93050904e0aeaf26b47fb1d1e8eeb803f9af6 Mon Sep 17 00:00:00 2001
From: mliska <mli...@suse.cz>
Date: Wed, 25 Feb 2015 18:26:09 +0100
Subject: [PATCH] ICF: Validate correctly hard register variables.
gcc/ChangeLog:
2015-02-25 Martin Liska <mli...@suse.cz>
* ipa-icf-gimple.c (func_checker::compare_variable_decl): Compare
hard register variables.
---
gcc/ipa-icf-gimple.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/gcc/ipa-icf-gimple.c b/gcc/ipa-icf-gimple.c
index 5b176d0..53d2c38 100644
--- a/gcc/ipa-icf-gimple.c
+++ b/gcc/ipa-icf-gimple.c
@@ -575,6 +575,13 @@ func_checker::compare_variable_decl (tree t1, tree t2)
if (t1 == t2)
return true;
+ if (DECL_HARD_REGISTER (t1) != DECL_HARD_REGISTER (t2))
+ return return_false_with_msg ("DECL_HARD_REGISTER are different");
+
+ if (DECL_HARD_REGISTER (t1)
+ && DECL_ASSEMBLER_NAME (t1) != DECL_ASSEMBLER_NAME (t2))
+ return return_false_with_msg ("HARD REGISTERS are different");
+
if (TREE_CODE (t1) == VAR_DECL && (DECL_EXTERNAL (t1) || TREE_STATIC (t1)))
{
symtab_node *n1 = symtab_node::get (t1);
--
2.1.2
