[PATCH, PR ipa/66566] Fix ICE in early_inliner: internal compiler error: in operator[]

[Ilya Enkovich]

Hi,

In early_inliner we do recompute inline summaries for edges after 
optimize_inline_calls, but check this summary exists in case new edges appear.  
But then it calls inline_update_overall_summary which also going through edges 
inline summaries but with no check this time causing segfault.  This patch 
fixes it.  Bootstrapped and regtested for x86_64-unknown-linux-gnu.  Is it OK 
for trunk and gcc-5-branch?

Thanks,
Ilya
--
gcc/

2015-06-18  Ilya Enkovich  <enkovich....@gmail.com>

        PR ipa/66566
        * ipa-inline-analysis.c (estimate_calls_size_and_time): Check
        edge summary is available.

gcc/testsuite/

2015-06-18  Ilya Enkovich  <enkovich....@gmail.com>

        PR ipa/66566
        * gcc.target/i386/mpx/pr66566.c: New test.


diff --git a/gcc/ipa-inline-analysis.c b/gcc/ipa-inline-analysis.c
index bbde855..e910ac5 100644
--- a/gcc/ipa-inline-analysis.c
+++ b/gcc/ipa-inline-analysis.c
@@ -3122,6 +3122,9 @@ estimate_calls_size_and_time (struct cgraph_node *node, 
int *size,
   struct cgraph_edge *e;
   for (e = node->callees; e; e = e->next_callee)
     {
+      if (inline_edge_summary_vec.length () <= (unsigned) e->uid)
+       continue;
+
       struct inline_edge_summary *es = inline_edge_summary (e);
 
       /* Do not care about zero sized builtins.  */
@@ -3153,6 +3156,9 @@ estimate_calls_size_and_time (struct cgraph_node *node, 
int *size,
     }
   for (e = node->indirect_calls; e; e = e->next_callee)
     {
+      if (inline_edge_summary_vec.length () <= (unsigned) e->uid)
+       continue;
+
       struct inline_edge_summary *es = inline_edge_summary (e);
       if (!es->predicate
          || evaluate_predicate (es->predicate, possible_truths))
diff --git a/gcc/testsuite/gcc.target/i386/mpx/pr66566.c 
b/gcc/testsuite/gcc.target/i386/mpx/pr66566.c
new file mode 100644
index 0000000..a405c20
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/mpx/pr66566.c
@@ -0,0 +1,12 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fcheck-pointer-bounds -mmpx" } */
+
+union jsval_layout
+{
+  void *asPtr;
+};
+union jsval_layout a;
+union jsval_layout b;
+union jsval_layout __inline__ fn1() { return b; }
+
+void fn2() { a = fn1(); }