[SH][committed] Add some test cases for PR 59478

[Oleg Endo]

Hi,

This adds some known-to-work test cases from the PR.
Tested on sh-elf with
make -k check-gcc RUNTESTFLAGS="sh.exp=pr59478.c --target_board=sh-sim
\{-m2/-ml,-m2/-mb,-m2a/-mb,-m4/-ml,-m4/-mb,-m4a/-ml,-m4a/-mb}"

Committed as r227958.

Cheers,
Oleg

gcc/testsuite/ChangeLog:
        PR target/59478
        * gcc.target/sh/pr59478.c: New.

Index: gcc/testsuite/gcc.target/sh/pr59478.c
===================================================================
--- gcc/testsuite/gcc.target/sh/pr59478.c	(revision 0)
+++ gcc/testsuite/gcc.target/sh/pr59478.c	(working copy)
@@ -0,0 +1,49 @@
+/* Verify that the fmac insn is used for the standard fmaf function.  */
+/* { dg-do compile { target { any_fpu } } }  */
+/* { dg-options "-O2" } */
+/* { dg-final { scan-assembler-times "fpul" 8 } } */
+/* { dg-final { scan-assembler-times "\tflds\tfr" 2 } } */
+/* { dg-final { scan-assembler-times "\tsts\tfpul" 2 } } */
+/* { dg-final { scan-assembler-times "\tlds\tr" 2 } } */
+/* { dg-final { scan-assembler-times "\tfsts\tfpul" 2 } } */
+/* { dg-final { scan-assembler-not "mov" } } */
+
+int
+test_00 (float val)
+{
+  char valbytes[sizeof (float)];
+  __builtin_memcpy (valbytes, &val, sizeof (float));
+
+  int result;
+  __builtin_memcpy (&result, valbytes, sizeof (int));
+
+  return result;
+}
+
+float
+test_01 (int val)
+{
+  char valbytes[sizeof (int)];
+  __builtin_memcpy (valbytes, &val, sizeof (int));
+
+  float result;
+  __builtin_memcpy (&result, valbytes, sizeof (float));
+
+  return result;
+}
+
+int
+test_02 (float val)
+{
+  union { int i; float f; } tmp;
+  tmp.f = val;
+  return tmp.i;
+}
+
+float
+test_03 (int val)
+{
+  union { int i; float f; } tmp;
+  tmp.i = val;
+  return tmp.f;
+}