re PR middle-end/24750 (global-alloc (reload) trips over own confusion for…

re PR middle-end/24750 (global-alloc (reload) trips over own confusion for unexpected addressing modes)

	PR middle-end/24750
	* gcc.dg/torture/pr24750-1.c, gcc.target/cris/torture/pr24750-2.c:
        New tests.

From-SVN: r106806

gcc/testsuite/ChangeLog

+2005-11-12  Hans-Peter Nilsson  <hp@axis.com>
+
+	PR middle-end/24750
+	* gcc.dg/torture/pr24750-1.c, gcc.target/cris/torture/pr24750-2.c:
+        New tests.
+
 2005-11-11  Andreas Tobler  <a.tobler@schweiz.ch>
 
 	* lib/target-libpath.exp (get_shlib_extension): New proc.

gcc/testsuite/gcc.dg/torture/pr24750-1.c

+extern int unknown;
+extern int n0;
+extern short *s0;
+extern int n1;
+extern short *s1;
+extern short *s2;
+extern int *n2;
+extern int *n3;
+extern int n4;
+extern short *n5;
+extern int *n6;
+extern int n7;
+extern char *unc;
+
+void
+f (short *sp)
+{
+  int j = 0;
+  int i = 0;
+  int n8 = 0;
+  int n9 = 0;
+  short *s3 = sp;
+  short s4 = (short) unknown;
+  short s5 = (short) unknown;
+  char *c0 = unc;
+  int n10 = 0;
+  int n11 = 0;
+  int u0 = unknown;
+  int k = 0;
+
+  for (n8 = 1; n8 <= n7; n8++)
+    {
+      for (i = 1; i <= n0; i++)
+	c0[i] = 0;
+      for (i = 1; i <= u0; i++) { }
+      for (i = sp[0]; i != -32767; i = sp[i])
+	if (s4 == u0)
+	  for (j = 1; j <= u0; j++)
+	    if (!c0[s3[j]])
+	      break;
+    }
+  for (n9 = 1; n9 <= n0; n9++) s1[unknown + n9] = n9;
+  for (i = 1; i <= n1; i++)
+    for (j = 1; j <= s4; j++)
+      s3[j] = s1[s3[j]];
+  for (n8 = 1; n8 <= n7; n8++)
+    for (i = 1; i <= s5; i++)
+      s3[i] = s1[s3[i]];
+  for (n9 = 1; n9 <= n0; n9++) sp[s1[n9]] = unknown;
+  for (n10 = 2; n10 < n4; n10++) { }
+  for (k = 1; k <= unknown; k++)
+    {
+      s4 = s0[n5[u0]];
+      for (i = 1; i <= s4; i++) { }
+      for (j = 1; j <= s4; j++)
+	if (n2[1] != 0)
+	  if (i == unknown)
+	    unknown = n3[unknown];
+      n6[u0] = n10;
+    }
+  for (k = n7; k >= n11; k--)
+    if (n2[k] == -32767)
+      break;
+  free (c0);
+
+  for (i = 1; i <= n7; i++)
+    {
+      for (j = 1; j <= s4; j++) { }
+      for (n8 = s2[unknown]; n8 != -32767; n8 = s2[n8]) { }
+      for (j = 1; j <= s5; j++) { }
+    }
+}

gcc/testsuite/gcc.target/cris/torture/pr24750-2.c

+/* As the invalid insn in this test got as far as to the target output
+   code and was "near enough" to output invalid assembly-code, we need
+   to pass it through the assembler as well.
+   { dg-do assemble } */
+
+int
+f (short *a, char *y)
+{
+  __asm__ ("" : : :
+#ifndef __PIC__
+	   "r0",
+#endif
+	   "r1", "r2", "r3", "r4", "r5", "r6", "r7",
+	   /* Register R8 is frame-pointer, and we don't have a means
+	      to not clobber it for the test-runs that don't eliminate
+	      it.  But that's ok; we have enough general-register
+	      pressure to repeat the bug without that.  */
+	   "r9", "r10", "r11", "r12", "r13");
+  return y[*a];
+}