[testsuite,arm] cmp-2.c: Move double-precision tests to cmp-3.c

Parts of the cmp-2.c test rely on double-precision support, making the
test fail on targets where the FPU supports single-precision only.

Split the test into single-precision (cmp-2.c) and double-precision
tests (cmp-3.c).

2020-03-24  Christophe Lyon  <christophe.lyon@linaro.org>

	gcc/testsuite/
	* gcc.target/arm/cmp-2.c: Move double-precision tests to...
	* gcc.target/arm/cmp-3.c: ...here (new file)

gcc/testsuite/ChangeLog

 2020-03-24  Christophe Lyon  <christophe.lyon@linaro.org>
 
+	* gcc.target/arm/cmp-2.c: Move double-precision tests to...
+	* gcc.target/arm/cmp-3.c: ...here (new file)
+
+2020-03-24  Christophe Lyon  <christophe.lyon@linaro.org>
+
 	* lib/target-supports.exp
 	(check_effective_target_arm_fp_dp_ok_nocache): New.
 	(check_effective_target_arm_fp_dp_ok): New.

gcc/testsuite/gcc.target/arm/cmp-2.c

@@ -30,9 +30,7 @@ int x, y;
   TEST_EXPR (NAME##_cr, (TYPE a1), OPERATOR (100, a1))
 
 #define TEST_OP(NAME, OPERATOR) \
-  TEST (f_##NAME, float, OPERATOR)		\
-  TEST (d_##NAME, double, OPERATOR)		\
-  TEST (ld_##NAME, long double, OPERATOR)
+  TEST (f_##NAME, float, OPERATOR)
 
 TEST_OP (eq, EQ)
 TEST_OP (ne, NE)

gcc/testsuite/gcc.target/arm/cmp-3.c

+/* { dg-do compile } */
+/* { dg-require-effective-target arm_fp_dp_ok } */
+/* { dg-skip-if "need fp instructions" { *-*-* } { "-mfloat-abi=soft" } { "" } } */
+/* { dg-options "-O" } */
+/* { dg-add-options arm_fp_dp } */
+/* { dg-final { scan-assembler-not "\tbl\t" } } */
+/* { dg-final { scan-assembler-not "__aeabi" } } */
+int x, y;
+
+#define EQ(X, Y) ((X) == (Y))
+#define NE(X, Y) ((X) != (Y))
+#define LT(X, Y) ((X) < (Y))
+#define GT(X, Y) ((X) > (Y))
+#define LE(X, Y) ((X) <= (Y))
+#define GE(X, Y) ((X) >= (Y))
+
+#define TEST_EXPR(NAME, ARGS, EXPR)			\
+  int NAME##1 ARGS { return (EXPR); }			\
+  int NAME##2 ARGS { return !(EXPR); }			\
+  int NAME##3 ARGS { return (EXPR) ? x : y; }		\
+  void NAME##4 ARGS { if (EXPR) x++; }			\
+  void NAME##5 ARGS { if (!(EXPR)) x++; }
+
+#define TEST(NAME, TYPE, OPERATOR) \
+  TEST_EXPR (NAME##_rr, (TYPE a1, TYPE a2), OPERATOR (a1, a2))		\
+  TEST_EXPR (NAME##_rm, (TYPE a1, TYPE *a2), OPERATOR (a1, *a2))	\
+  TEST_EXPR (NAME##_mr, (TYPE *a1, TYPE a2), OPERATOR (*a1, a2))	\
+  TEST_EXPR (NAME##_mm, (TYPE *a1, TYPE *a2), OPERATOR (*a1, *a2))	\
+  TEST_EXPR (NAME##_rc, (TYPE a1), OPERATOR (a1, 100))			\
+  TEST_EXPR (NAME##_cr, (TYPE a1), OPERATOR (100, a1))
+
+#define TEST_OP(NAME, OPERATOR) \
+  TEST (d_##NAME, double, OPERATOR)		\
+  TEST (ld_##NAME, long double, OPERATOR)
+
+TEST_OP (eq, EQ)
+TEST_OP (ne, NE)
+TEST_OP (lt, LT)
+TEST_OP (gt, GT)
+TEST_OP (le, LE)
+TEST_OP (ge, GE)
+TEST_OP (blt, __builtin_isless)
+TEST_OP (bgt, __builtin_isgreater)
+TEST_OP (ble, __builtin_islessequal)
+TEST_OP (bge, __builtin_isgreaterequal)
+/* This one should be expanded into separate ordered and equality
+   comparisons.  */
+TEST_OP (blg, __builtin_islessgreater)
+TEST_OP (bun, __builtin_isunordered)