re PR target/54236 ([SH] Improve addc and subc insn utilization)

gcc/testsuite/
	PR target/54236
	* gcc.target/sh/pr54236-4.c: New.

From-SVN: r220093

gcc/testsuite/ChangeLog

+2015-01-25  Oleg Endo  <olegendo@gcc.gnu.org>
+
+	PR target/54236
+	* gcc.target/sh/pr54236-4.c: New.
+
 2015-01-24  H.J. Lu  <hongjiu.lu@intel.com>
 
 	* gcc.target/i386/builtin_target.c (check_intel_cpu_model): Add

gcc/testsuite/gcc.target/sh/pr54236-4.c

+/* Check that addc and subc patterns are converted if the T value is
+   inverted.  */
+/* { dg-do compile }  */
+/* { dg-options "-O2" }  */
+/* { dg-skip-if "" { "sh*-*-*" } { "-m5*"} { "" } }  */
+/* { dg-final { scan-assembler-times "cmp/eq" 7 } }  */
+
+/* { dg-final { scan-assembler-times "subc" 5 { target { ! sh2a } } } }  */
+/* { dg-final { scan-assembler-times "not\t" 3 { target { ! sh2a } } } }  */
+/* { dg-final { scan-assembler-times "addc" 2 { target { ! sh2a } } } }  */
+
+/* { dg-final { scan-assembler-times "subc" 2 { target { sh2a } } } }  */
+/* { dg-final { scan-assembler-times "addc" 5 { target { sh2a } } } }  */
+/* { dg-final { scan-assembler-times "nott" 3 { target { sh2a } } } }  */
+
+/* { dg-final { scan-assembler-not "movt" } }  */
+/* { dg-final { scan-assembler-not "negc" } }  */
+/* { dg-final { scan-assembler-not "movrt" } }  */
+
+int
+test_0 (int a, int b, int c)
+{
+  /* 1x cmp/eq, 1x subc  */
+  return c + (a != b);
+}
+
+int
+test_1 (int a, int b, int c, int d)
+{
+  /* 1x cmp/eq, 1x not, 1x subc
+     SH2A: 1x cmp/eq, 1x nott, 1x addc  */
+  return (a != b) + c + d;
+}
+
+int
+test_2 (int a, int b, int c, int d)
+{
+  /* 1x cmp/eq, 1x not, 1x subc
+     SH2A: 1x cmp/eq, 1x nott, 1x addc  */
+  return c + (a != b) + d;
+}
+
+int
+test_3 (int a, int b, int c, int d)
+{
+  /* 1x cmp/eq, 1x not, 1x subc
+     SH2A: 1x cmp/eq, 1x nott, 1x addc  */
+  return c + d + (a != b);
+}
+
+int
+test_4 (int a, int b, int c, int d)
+{
+  /* 1x cmp/eq, 1x subc  */
+  return (a != b) - c;
+}
+
+int
+test_5 (int a, int b, int c, int d)
+{
+  /* 1x cmp/eq, 1x add #-1, 1x addc  */
+  return c - (a != b);
+}
+
+int
+test_6 (int a, int b, int c, int d)
+{
+  /* 1x cmp/eq, 1x add #-1, 1x addc  */
+  return c - (a != b) + d;
+}