1 files changed, 54 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/dfp/ddmode-ice.c b/gcc/testsuite/gcc.dg/dfp/ddmode-ice.c
new file mode 100644
index 000000000..19f303801
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/dfp/ddmode-ice.c
@@ -0,0 +1,54 @@
+/* { dg-do compile } */
+/* { dg-options "-O1" } */
+
+/* This used to result in an ICE.  */
+
+_Decimal64 y[258][258];
+_Decimal64 dd[258][258];
+_Decimal64 ry[258][258];
+_Decimal64
+foo (void)
+{
+  int i;
+  int j;
+  int m;
+  int im;
+  int jm;
+  int ip;
+  int jp;
+  int i2m;
+  int i1p;
+  _Decimal64 a;
+  _Decimal64 b;
+  _Decimal64 c;
+  _Decimal64 qi;
+  _Decimal64 qj;
+  _Decimal64 xx;
+  _Decimal64 yx;
+  _Decimal64 xy;
+  _Decimal64 yy;
+  _Decimal64 rel;
+  _Decimal64 qxx;
+  _Decimal64 qyy;
+  _Decimal64 qxy;
+  do
+    {
+      jp = j + 1;
+      for (i = i1p; i <= i2m; i++)
+	{
+	  ip = i + 1;
+	  yx = y[ip][j] - y[im][j];
+	  yy = y[i][jp] - y[i][jm];
+	  a = 0.25dd * (xy * xy + yy * yy);
+	  b = 0.25dd * (xx * xx + yx * yx);
+	  c = 0.125dd * (xx * xy + yx * yy);
+	  qj = 0.0dd;
+	  dd[i][m] = b + a * rel + b;
+	  qxx = y[ip][j] - 2.0dd * y[i][j] + y[im][j];
+	  qyy = y[i][jp] - 2.0dd * y[i][j] + y[i][jm];
+	  qxy = y[ip][jp] - y[ip][jm] - y[im][jp] + y[im][jm];
+	  ry[i][m] = a * qxx + b * qyy - c * qxy + yx * qi + yy * qj;
+	}
+    }
+  while (1);
+}