[committed obvious][arm] Add test that was missing from old commit [PR91816]

[Stam Markianos-Wright via Gcc-patches]

Hi all,

A while back I submitted GCC10 commit:
 44f77a6dea2f312ee1743f3dde465c1b8453ee13

for PR91816.

Turns out I was an idiot and forgot to include the test in the actual 
git commit, even my entire patch had been approved.

Tested that the test still passes on a cross arm-none-eabi and also in a
Cortex A-15 bootstrap with no regressions.

Submitting this as Obvious to gcc-11 and backporting to gcc-10.

Thanks,
Stam Markianos-Wright

gcc/testsuite/ChangeLog:
        PR target/91816
        * gcc.target/arm/pr91816.c: New test.
diff --git a/gcc/testsuite/gcc.target/arm/pr91816.c b/gcc/testsuite/gcc.target/arm/pr91816.c
new file mode 100644
index 00000000000..75b938a6aad
--- /dev/null
+++ b/gcc/testsuite/gcc.target/arm/pr91816.c
@@ -0,0 +1,63 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target arm_thumb2_ok } */
+/* { dg-additional-options "-mthumb" }  */
+/* { dg-timeout-factor 4.0 } */
+
+int printf(const char *, ...);
+
+#define HW0	printf("Hello World!\n");
+#define HW1	HW0 HW0 HW0 HW0 HW0 HW0 HW0 HW0 HW0 HW0
+#define HW2	HW1 HW1 HW1 HW1 HW1 HW1 HW1 HW1 HW1 HW1
+#define HW3	HW2 HW2 HW2 HW2 HW2 HW2 HW2 HW2 HW2 HW2
+#define HW4	HW3 HW3 HW3 HW3 HW3 HW3 HW3 HW3 HW3 HW3
+#define HW5	HW4 HW4 HW4 HW4 HW4 HW4 HW4 HW4 HW4 HW4
+
+__attribute__((noinline,noclone)) void f1 (int a)
+{
+  if (a) { HW0 }
+}
+
+__attribute__((noinline,noclone)) void f2 (int a)
+{
+  if (a) { HW3 }
+}
+
+
+__attribute__((noinline,noclone)) void f3 (int a)
+{
+  if (a) { HW5 }
+}
+
+__attribute__((noinline,noclone)) void f4 (int a)
+{
+  if (a == 1) { HW0 }
+}
+
+__attribute__((noinline,noclone)) void f5 (int a)
+{
+  if (a == 1) { HW3 }
+}
+
+
+__attribute__((noinline,noclone)) void f6 (int a)
+{
+  if (a == 1) { HW5 }
+}
+
+
+int main(void)
+{
+	f1(0);
+	f2(0);
+	f3(0);
+	f4(0);
+	f5(0);
+	f6(0);
+	return 0;
+}
+
+
+/* { dg-final { scan-assembler-times "beq\\t.L\[0-9\]" 2 } } */
+/* { dg-final { scan-assembler-times "beq\\t.Lbcond\[0-9\]" 1 } } */
+/* { dg-final { scan-assembler-times "bne\\t.L\[0-9\]" 2 } } */
+/* { dg-final { scan-assembler-times "bne\\t.Lbcond\[0-9\]" 1 } } */