[committed] Add patch for PR 70292

[committed] Add patch for PR 70292

[Andrey Belevantsev]

[-- Attachment #1: Type: text/plain, Size: 376 bytes --]

Hello,

PR 70292 turned out to be the duplicate of PR 64411, which is already fixed 
on trunk, but still the testcase from the PR is worth adding.  It can be 
tortured instead of being a target test, and also this PR showed that 64411 
is a regression and should be backported to gcc-5-branch.

Committed the test to trunk.  I don't think we need it for gcc-5 though.

Andrey

[-- Attachment #2: pr70292.diff --]
[-- Type: text/x-patch, Size: 1023 bytes --]

Index: gcc/testsuite/gcc.dg/pr70292.c
===================================================================
*** gcc/testsuite/gcc.dg/pr70292.c	(revision 0)
--- gcc/testsuite/gcc.dg/pr70292.c	(revision 234627)
***************
*** 0 ****
--- 1,12 ----
+ /* { dg-do compile { target powerpc*-*-* ia64-*-* i?86-*-* x86_64-*-* } } */
+ /* { dg-options "-O1 -fno-inline -fno-dce -fschedule-insns -fselective-scheduling -fno-tree-dce" } */
+ 
+ void bar() {}
+ 
+ int t106_1mul(unsigned int x, unsigned int y) {
+     int r;
+     if (__builtin_mul_overflow(x, y, &r)) {
+         bar();
+     }
+     return r;
+ }
Index: gcc/testsuite/ChangeLog
===================================================================
*** gcc/testsuite/ChangeLog	(revision 234626)
--- gcc/testsuite/ChangeLog	(revision 234627)
***************
*** 1,3 ****
--- 1,8 ----
+ 2016-03-31  Andrey Belevantsev  <abel@ispras.ru>
+ 
+ 	PR target/70292
+ 	* gcc.c-torture/pr70292.c: New test.
+ 
  2016-03-31  Marek Polacek  <polacek@redhat.com>
  
  	PR c/70297