From: Jakub Jelinek <jakub@redhat.com>
Date: Mon, 6 Jun 2011 17:14:31 +0000 (+0200)
Subject: re PR c++/49264 (Internal compiler error: segmentation fault)
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=04902d4cb5ca18954cf2c32c4f776e53162a0e8f;p=gcc.git

re PR c++/49264 (Internal compiler error: segmentation fault)

	PR c++/49264
	* gimple-fold.c (fold_stmt_1): Don't try to fold *& on the lhs
	if stmt folded into nothing.
	* tree-inline.c (fold_marked_statements): If a builtin at the
	end of a bb folded into nothing, just update cgraph edges
	and move to next bb.
	* cgraph.c (cgraph_update_edges_for_call_stmt_node): Allow new_stmt
	to be NULL.  Don't compute count and frequency if new_call is NULL.

	* g++.dg/opt/pr49264.C: New test.

From-SVN: r174712
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 165783f85c7..967371c09f3 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,9 @@
 2011-06-06  Jakub Jelinek  <jakub@redhat.com>
 
+	PR debug/49294
+	* dwarf2out.c (mem_loc_descriptor) <do_shift>: Give up for
+	non-MODE_INT modes.
+
 	PR c++/49264
 	* gimple-fold.c (fold_stmt_1): Don't try to fold *& on the lhs
 	if stmt folded into nothing.
diff --git a/gcc/dwarf2out.c b/gcc/dwarf2out.c
index b3cf4a65730..0fa7f91fa17 100644
--- a/gcc/dwarf2out.c
+++ b/gcc/dwarf2out.c
@@ -14904,6 +14904,8 @@ mem_loc_descriptor (rtx rtl, enum machine_mode mode,
       goto do_shift;
 
     do_shift:
+      if (GET_MODE_CLASS (mode) != MODE_INT)
+	break;
       op0 = mem_loc_descriptor (XEXP (rtl, 0), mode, mem_mode,
 				VAR_INIT_STATUS_INITIALIZED);
       {
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 6d27ed9ff43..4eacaf2522e 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,5 +1,8 @@
 2011-06-06  Jakub Jelinek  <jakub@redhat.com>
 
+	PR debug/49294
+	* gcc.dg/debug/pr49294.c: New test.
+
 	PR c++/49264
 	* g++.dg/opt/pr49264.C: New test.
 
diff --git a/gcc/testsuite/gcc.dg/debug/pr49294.c b/gcc/testsuite/gcc.dg/debug/pr49294.c
new file mode 100644
index 00000000000..e4869e079e9
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/debug/pr49294.c
@@ -0,0 +1,14 @@
+/* PR debug/49294 */
+/* { dg-do compile } */
+
+typedef __attribute__ ((vector_size ((8) * sizeof (short)))) short V;
+
+int k;
+V v;
+
+void
+foo (void)
+{
+  V w = { k, k, k, k, k, k, k, k };
+  V x = v >> w;
+}