re PR tree-optimization/66349 (ICE on valid code at -O1, -O2 and -O3 on…

re PR tree-optimization/66349 (ICE on valid code at -O1, -O2 and -O3 on x86_64-linux-gnu in dfs_enumerate_from, at cfganal.c:1195)

2015-06-01  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/66349
	PR tree-optimization/66352
	PR tree-optimization/66357
	* gcc.dg/torture/pr66357.c: New testcase.
	* gcc.dg/torture/pr66349.c: Likewise.
	* gfortran.fortran-torture/compile/pr66352.f90: Likewise.

From-SVN: r223980

gcc/testsuite/ChangeLog

 2015-06-01  Richard Biener  <rguenther@suse.de>
 
+	PR tree-optimization/66349
+	PR tree-optimization/66352
+	PR tree-optimization/66357
+	* gcc.dg/torture/pr66357.c: New testcase.
+	* gcc.dg/torture/pr66349.c: Likewise.
+	* gfortran.fortran-torture/compile/pr66352.f90: Likewise.
+
+2015-06-01  Richard Biener  <rguenther@suse.de>
+
 	Revert
 	2015-05-29  Richard Biener  <rguenther@suse.de>
 

gcc/testsuite/gcc.dg/torture/pr66349.c

+/* { dg-do compile } */
+
+unsigned int a;
+int b, c, d, e, f;
+
+void
+fn1 ()
+{
+  for (; b; b++)
+    {
+      for (e = 0; e < 1; e++)
+	;
+      int i = -1, j = 1;
+      if (f)
+	{
+	  for (; a < 1; a++)
+	    ;
+	  i++;
+	  j = 0;
+	}
+      for (; d; d++)
+	{
+	  if (j)
+	    for (;; c++)
+	      ;
+	  if (i)
+	    continue;
+	  return;
+	}
+    }
+}

gcc/testsuite/gcc.dg/torture/pr66357.c

+/* { dg-do compile } */
+
+int a, c, e, f;
+volatile int d;
+
+void
+fn1 ()
+{
+  if (!e)
+    for (; a; a++)
+      {
+	if (e)
+	  for (d++; d;)
+	    ;
+	else
+	  for (c = 0; c; --c)
+	    ;
+	if (f)
+	  for (;;)
+	    {
+	      if (e)
+		break;
+	      a = 0;
+	    }
+      }
+}

gcc/testsuite/gfortran.fortran-torture/compile/pr66352.f90

+! { dg-additional-options "-fprofile-generate" }
+  SUBROUTINE matmul_test ( ntim,len)
+    INTEGER, PARAMETER :: dp=8
+    REAL(KIND=dp), ALLOCATABLE, DIMENSION(:, :) :: ma, mb, mc
+    INTEGER :: siz,len, ntim
+    DO i = 5, siz, 2
+       len = 2**i + 1
+       ALLOCATE ( ma ( len, len ), STAT = ierr )
+       IF ( ierr /= 0 ) EXIT
+       ALLOCATE ( mb ( len, len ), STAT = ierr )
+       IF ( ierr /= 0 ) EXIT
+       ALLOCATE ( mc ( len, len ), STAT = ierr )
+       IF ( ierr /= 0 ) EXIT
+       DO j = 1, ntim
+          mc = MATMUL ( ma, mb )
+       END DO
+    END DO
+  END SUBROUTINE matmul_test