From 2b9d5ad7df2f309a7835e7023d794afe492edfa2 Mon Sep 17 00:00:00 2001
From: Alexandre Oliva <aoliva@redhat.com>
Date: Fri, 6 Jul 2012 11:37:36 +0000
Subject: [PATCH] re PR debug/53820 (ICE in vt_expand_var_loc_chain, at
var-tracking.c:8029)
PR debug/53820
* var-tracking.c (vt_add_function_parameter): Convert
internal_arg_pointer into arg_pointer-based address even
without DRAP.
From-SVN: r189326
---
gcc/ChangeLog | 7 +++++++
gcc/var-tracking.c | 11 ++++-------
2 files changed, 11 insertions(+), 7 deletions(-)
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index f7a65b96bc00..9ccc668db32a 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2012-07-06 Alexandre Oliva <aoliva@redhat.com>
+
+ PR debug/53820
+ * var-tracking.c (vt_add_function_parameter): Convert
+ internal_arg_pointer into arg_pointer-based address even
+ without DRAP.
+
2012-07-06 Alexandre Oilva <aoliva@redhat.com>
PR rtl-optimization/53827
diff --git a/gcc/var-tracking.c b/gcc/var-tracking.c
index 66ce35a00954..5288c284227b 100644
--- a/gcc/var-tracking.c
+++ b/gcc/var-tracking.c
@@ -9327,14 +9327,11 @@ vt_add_function_parameter (tree parm)
if (GET_MODE (decl_rtl) == BLKmode || GET_MODE (incoming) == BLKmode)
return;
- /* If there is a DRAP register, rewrite the incoming location of parameters
- passed on the stack into MEMs based on the argument pointer, as the DRAP
- register can be reused for other purposes and we do not track locations
- based on generic registers. But the prerequisite is that this argument
- pointer be also the virtual CFA pointer, see vt_initialize. */
+ /* If there is a DRAP register or a pseudo in internal_arg_pointer,
+ rewrite the incoming location of parameters passed on the stack
+ into MEMs based on the argument pointer, so that incoming doesn't
+ depend on a pseudo. */
if (MEM_P (incoming)
- && stack_realign_drap
- && arg_pointer_rtx == cfa_base_rtx
&& (XEXP (incoming, 0) == crtl->args.internal_arg_pointer
|| (GET_CODE (XEXP (incoming, 0)) == PLUS
&& XEXP (XEXP (incoming, 0), 0)
--
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