RISC-V: Fix __riscv_compressed regression.

This was accidentally broken by the patch adding ELF attribute support.
The __riscv_compressed predefined macro is not being defined when the
target supports the C extension.  The fix adds testcases to verify that
all of the predefined macros are correct for various option combinations.

	gcc/
	* common/config/riscv/riscv-common.c (riscv_parse_arch_string):
	Clear MASK_RVC and then set if C subset supported.

	gcc/testsuite/
	* gcc.target/riscv/predef-1.c: New.
	* gcc.target/riscv/predef-2.c: New.
	* gcc.target/riscv/predef-3.c: New.
	* gcc.target/riscv/predef-4.c: New.
	* gcc.target/riscv/predef-5.c: New.
	* gcc.target/riscv/predef-6.c: New.
	* gcc.target/riscv/predef-7.c: New.
	* gcc.target/riscv/predef-8.c: New.

From-SVN: r270026

gcc/ChangeLog

+2019-03-29  Jim Wilson  <jimw@sifive.com>
+
+	* common/config/riscv/riscv-common.c (riscv_parse_arch_string):
+	Clear MASK_RVC and then set if C subset supported.
+
 2019-03-29  Jakub Jelinek  <jakub@redhat.com>
 
 	PR c/89872

gcc/common/config/riscv/riscv-common.c

@@ -564,6 +564,10 @@ riscv_parse_arch_string (const char *isa, int *flags, location_t loc)
   if (subset_list->lookup ("d"))
     *flags |= MASK_DOUBLE_FLOAT;
 
+  *flags &= ~MASK_RVC;
+  if (subset_list->lookup ("c"))
+    *flags |= MASK_RVC;
+
   if (current_subset_list)
     delete current_subset_list;
 

gcc/testsuite/ChangeLog

+2019-03-29  Jim Wilson  <jimw@sifive.com>
+
+	* gcc.target/riscv/predef-1.c: New.
+	* gcc.target/riscv/predef-2.c: New.
+	* gcc.target/riscv/predef-3.c: New.
+	* gcc.target/riscv/predef-4.c: New.
+	* gcc.target/riscv/predef-5.c: New.
+	* gcc.target/riscv/predef-6.c: New.
+	* gcc.target/riscv/predef-7.c: New.
+	* gcc.target/riscv/predef-8.c: New.
+
 2019-03-29  Jakub Jelinek  <jakub@redhat.com>
 
 	PR rtl-optimization/89865

gcc/testsuite/gcc.target/riscv/predef-1.c

+/* { dg-do compile } */
+/* { dg-options "-O2 -march=rv32i -mabi=ilp32 -mcmodel=medlow" } */
+
+int main () {
+#if !defined(__riscv)
+#error "__riscv"
+#endif
+
+#if defined(__riscv_compressed)
+#error "__riscv_compressed"
+#endif
+
+#if defined(__riscv_32e)
+#error "__riscv_32e"
+#endif
+
+#if defined(__riscv_atomic)
+#error "__riscv_atomic"
+#endif
+
+#if defined(__riscv_mul)
+#error "__riscv_mul"
+#endif
+#if defined(__riscv_div)
+#error "__riscv_div"
+#endif
+#if defined(__riscv_muldiv)
+#error "__riscv_muldiv"
+#endif
+
+#if __riscv_xlen != 32
+#error "__riscv_xlen"
+#endif
+
+#if defined(__riscv_fdiv)
+#error "__riscv_fdiv"
+#endif
+#if defined(__riscv_fsqrt)
+#error "__riscv_fsqrt"
+#endif
+
+#if defined(__riscv_abi_rve)
+#error "__riscv_abi_rve"
+#endif
+#if !defined(__riscv_float_abi_soft)
+#error "__riscv_float_abi_soft"
+#endif
+#if defined(__riscv_float_abi_single)
+#error "__riscv_float_abi_single"
+#endif
+#if defined(__riscv_float_abi_double)
+#error "__riscv_float_abi_double"
+#endif
+
+#if !defined(__riscv_cmodel_medlow)
+#error "__riscv_cmodel_medlow"
+#endif
+#if defined(__riscv_cmodel_medany)
+#error "__riscv_cmodel_medlow"
+#endif
+#if defined(__riscv_cmodel_pic)
+#error "__riscv_cmodel_medlow"
+#endif
+
+  return 0;
+}

gcc/testsuite/gcc.target/riscv/predef-2.c

+/* { dg-do compile } */
+/* { dg-options "-O2 -march=rv32imaf -mabi=ilp32f -mcmodel=medany" } */
+
+int main () {
+#if !defined(__riscv)
+#error "__riscv"
+#endif
+
+#if defined(__riscv_compressed)
+#error "__riscv_compressed"
+#endif
+
+#if defined(__riscv_32e)
+#error "__riscv_32e"
+#endif
+
+#if !defined(__riscv_atomic)
+#error "__riscv_atomic"
+#endif
+
+#if !defined(__riscv_mul)
+#error "__riscv_mul"
+#endif
+#if !defined(__riscv_div)
+#error "__riscv_div"
+#endif
+#if !defined(__riscv_muldiv)
+#error "__riscv_muldiv"
+#endif
+
+#if __riscv_xlen != 32
+#error "__riscv_xlen"
+#endif
+
+#if !defined(__riscv_fdiv)
+#error "__riscv_fdiv"
+#endif
+#if !defined(__riscv_fsqrt)
+#error "__riscv_fsqrt"
+#endif
+
+#if defined(__riscv_abi_rve)
+#error "__riscv_abi_rve"
+#endif
+#if defined(__riscv_float_abi_soft)
+#error "__riscv_float_abi_soft"
+#endif
+#if !defined(__riscv_float_abi_single)
+#error "__riscv_float_abi_single"
+#endif
+#if defined(__riscv_float_abi_double)
+#error "__riscv_float_abi_double"
+#endif
+
+#if defined(__riscv_cmodel_medlow)
+#error "__riscv_cmodel_medlow"
+#endif
+#if !defined(__riscv_cmodel_medany)
+#error "__riscv_cmodel_medlow"
+#endif
+#if defined(__riscv_cmodel_pic)
+#error "__riscv_cmodel_medlow"
+#endif
+
+  return 0;
+}

gcc/testsuite/gcc.target/riscv/predef-3.c

+/* { dg-do compile } */
+/* { dg-options "-O2 -march=rv32imafdc -mabi=ilp32d -fpic" } */
+
+int main () {
+#if !defined(__riscv)
+#error "__riscv"
+#endif
+
+#if !defined(__riscv_compressed)
+#error "__riscv_compressed"
+#endif
+
+#if defined(__riscv_32e)
+#error "__riscv_32e"
+#endif
+
+#if !defined(__riscv_atomic)
+#error "__riscv_atomic"
+#endif
+
+#if !defined(__riscv_mul)
+#error "__riscv_mul"
+#endif
+#if !defined(__riscv_div)
+#error "__riscv_div"
+#endif
+#if !defined(__riscv_muldiv)
+#error "__riscv_muldiv"
+#endif
+
+#if __riscv_xlen != 32
+#error "__riscv_xlen"
+#endif
+
+#if !defined(__riscv_fdiv)
+#error "__riscv_fdiv"
+#endif
+#if !defined(__riscv_fsqrt)
+#error "__riscv_fsqrt"
+#endif
+
+#if defined(__riscv_abi_rve)
+#error "__riscv_abi_rve"
+#endif
+#if defined(__riscv_float_abi_soft)
+#error "__riscv_float_abi_soft"
+#endif
+#if defined(__riscv_float_abi_single)
+#error "__riscv_float_abi_single"
+#endif
+#if !defined(__riscv_float_abi_double)
+#error "__riscv_float_abi_double"
+#endif
+
+#if defined(__riscv_cmodel_medlow)
+#error "__riscv_cmodel_medlow"
+#endif
+#if defined(__riscv_cmodel_medany)
+#error "__riscv_cmodel_medlow"
+#endif
+#if !defined(__riscv_cmodel_pic)
+#error "__riscv_cmodel_medlow"
+#endif
+
+  return 0;
+}

gcc/testsuite/gcc.target/riscv/predef-4.c

+/* { dg-do compile } */
+/* { dg-options "-O2 -march=rv64ia -mabi=lp64 -mcmodel=medlow" } */
+
+int main () {
+#if !defined(__riscv)
+#error "__riscv"
+#endif
+
+#if defined(__riscv_compressed)
+#error "__riscv_compressed"
+#endif
+
+#if defined(__riscv_32e)
+#error "__riscv_32e"
+#endif
+
+#if !defined(__riscv_atomic)
+#error "__riscv_atomic"
+#endif
+
+#if defined(__riscv_mul)
+#error "__riscv_mul"
+#endif
+#if defined(__riscv_div)
+#error "__riscv_div"
+#endif
+#if defined(__riscv_muldiv)
+#error "__riscv_muldiv"
+#endif
+
+#if __riscv_xlen != 64
+#error "__riscv_xlen"
+#endif
+
+#if defined(__riscv_fdiv)
+#error "__riscv_fdiv"
+#endif
+#if defined(__riscv_fsqrt)
+#error "__riscv_fsqrt"
+#endif
+
+#if defined(__riscv_abi_rve)
+#error "__riscv_abi_rve"
+#endif
+#if !defined(__riscv_float_abi_soft)
+#error "__riscv_float_abi_soft"
+#endif
+#if defined(__riscv_float_abi_single)
+#error "__riscv_float_abi_single"
+#endif
+#if defined(__riscv_float_abi_double)
+#error "__riscv_float_abi_double"
+#endif
+
+#if !defined(__riscv_cmodel_medlow)
+#error "__riscv_cmodel_medlow"
+#endif
+#if defined(__riscv_cmodel_medany)
+#error "__riscv_cmodel_medlow"
+#endif
+#if defined(__riscv_cmodel_pic)
+#error "__riscv_cmodel_medlow"
+#endif
+
+  return 0;
+}

gcc/testsuite/gcc.target/riscv/predef-5.c

+/* { dg-do compile } */
+/* { dg-options "-O2 -march=rv64imf -mabi=lp64f -mcmodel=medany" } */
+
+int main () {
+#if !defined(__riscv)
+#error "__riscv"
+#endif
+
+#if defined(__riscv_compressed)
+#error "__riscv_compressed"
+#endif
+
+#if defined(__riscv_32e)
+#error "__riscv_32e"
+#endif
+
+#if defined(__riscv_atomic)
+#error "__riscv_atomic"
+#endif
+
+#if !defined(__riscv_mul)
+#error "__riscv_mul"
+#endif
+#if !defined(__riscv_div)
+#error "__riscv_div"
+#endif
+#if !defined(__riscv_muldiv)
+#error "__riscv_muldiv"
+#endif
+
+#if __riscv_xlen != 64
+#error "__riscv_xlen"
+#endif
+
+#if !defined(__riscv_fdiv)
+#error "__riscv_fdiv"
+#endif
+#if !defined(__riscv_fsqrt)
+#error "__riscv_fsqrt"
+#endif
+
+#if defined(__riscv_abi_rve)
+#error "__riscv_abi_rve"
+#endif
+#if defined(__riscv_float_abi_soft)
+#error "__riscv_float_abi_soft"
+#endif
+#if !defined(__riscv_float_abi_single)
+#error "__riscv_float_abi_single"
+#endif
+#if defined(__riscv_float_abi_double)
+#error "__riscv_float_abi_double"
+#endif
+
+#if defined(__riscv_cmodel_medlow)
+#error "__riscv_cmodel_medlow"
+#endif
+#if !defined(__riscv_cmodel_medany)
+#error "__riscv_cmodel_medlow"
+#endif
+#if defined(__riscv_cmodel_pic)
+#error "__riscv_cmodel_medlow"
+#endif
+
+  return 0;
+}

gcc/testsuite/gcc.target/riscv/predef-6.c

+/* { dg-do compile } */
+/* { dg-options "-O2 -march=rv64gc -mabi=lp64d -fpic" } */
+
+int main () {
+#if !defined(__riscv)
+#error "__riscv"
+#endif
+
+#if !defined(__riscv_compressed)
+#error "__riscv_compressed"
+#endif
+
+#if defined(__riscv_32e)
+#error "__riscv_32e"
+#endif
+
+#if !defined(__riscv_atomic)
+#error "__riscv_atomic"
+#endif
+
+#if !defined(__riscv_mul)
+#error "__riscv_mul"
+#endif
+#if !defined(__riscv_div)
+#error "__riscv_div"
+#endif
+#if !defined(__riscv_muldiv)
+#error "__riscv_muldiv"
+#endif
+
+#if __riscv_xlen != 64
+#error "__riscv_xlen"
+#endif
+
+#if !defined(__riscv_fdiv)
+#error "__riscv_fdiv"
+#endif
+#if !defined(__riscv_fsqrt)
+#error "__riscv_fsqrt"
+#endif
+
+#if defined(__riscv_abi_rve)
+#error "__riscv_abi_rve"
+#endif
+#if defined(__riscv_float_abi_soft)
+#error "__riscv_float_abi_soft"
+#endif
+#if defined(__riscv_float_abi_single)
+#error "__riscv_float_abi_single"
+#endif
+#if !defined(__riscv_float_abi_double)
+#error "__riscv_float_abi_double"
+#endif
+
+#if defined(__riscv_cmodel_medlow)
+#error "__riscv_cmodel_medlow"
+#endif
+#if defined(__riscv_cmodel_medany)
+#error "__riscv_cmodel_medlow"
+#endif
+#if !defined(__riscv_cmodel_pic)
+#error "__riscv_cmodel_medlow"
+#endif
+
+  return 0;
+}

gcc/testsuite/gcc.target/riscv/predef-7.c

+/* { dg-do compile } */
+/* { dg-options "-O2 -march=rv32em -mabi=ilp32e -mno-div -mcmodel=medlow" } */
+
+int main () {
+#if !defined(__riscv)
+#error "__riscv"
+#endif
+
+#if defined(__riscv_compressed)
+#error "__riscv_compressed"
+#endif
+
+#if !defined(__riscv_32e)
+#error "__riscv_32e"
+#endif
+
+#if defined(__riscv_atomic)
+#error "__riscv_atomic"
+#endif
+
+#if !defined(__riscv_mul)
+#error "__riscv_mul"
+#endif
+#if defined(__riscv_div)
+#error "__riscv_div"
+#endif
+#if defined(__riscv_muldiv)
+#error "__riscv_muldiv"
+#endif
+
+#if __riscv_xlen != 32
+#error "__riscv_xlen"
+#endif
+
+#if defined(__riscv_fdiv)
+#error "__riscv_fdiv"
+#endif
+#if defined(__riscv_fsqrt)
+#error "__riscv_fsqrt"
+#endif
+
+#if !defined(__riscv_abi_rve)
+#error "__riscv_abi_rve"
+#endif
+#if !defined(__riscv_float_abi_soft)
+#error "__riscv_float_abi_soft"
+#endif
+#if defined(__riscv_float_abi_single)
+#error "__riscv_float_abi_single"
+#endif
+#if defined(__riscv_float_abi_double)
+#error "__riscv_float_abi_double"
+#endif
+
+#if !defined(__riscv_cmodel_medlow)
+#error "__riscv_cmodel_medlow"
+#endif
+#if defined(__riscv_cmodel_medany)
+#error "__riscv_cmodel_medlow"
+#endif
+#if defined(__riscv_cmodel_pic)
+#error "__riscv_cmodel_medlow"
+#endif
+
+  return 0;
+}

gcc/testsuite/gcc.target/riscv/predef-8.c

+/* { dg-do compile } */
+/* { dg-options "-O2 -march=rv32if -mabi=ilp32f -mno-fdiv -mcmodel=medany" } */
+
+int main () {
+#if !defined(__riscv)
+#error "__riscv"
+#endif
+
+#if defined(__riscv_compressed)
+#error "__riscv_compressed"
+#endif
+
+#if defined(__riscv_32e)
+#error "__riscv_32e"
+#endif
+
+#if defined(__riscv_atomic)
+#error "__riscv_atomic"
+#endif
+
+#if defined(__riscv_mul)
+#error "__riscv_mul"
+#endif
+#if defined(__riscv_div)
+#error "__riscv_div"
+#endif
+#if defined(__riscv_muldiv)
+#error "__riscv_muldiv"
+#endif
+
+#if __riscv_xlen != 32
+#error "__riscv_xlen"
+#endif
+
+#if defined(__riscv_fdiv)
+#error "__riscv_fdiv"
+#endif
+#if defined(__riscv_fsqrt)
+#error "__riscv_fsqrt"
+#endif
+
+#if defined(__riscv_abi_rve)
+#error "__riscv_abi_rve"
+#endif
+#if defined(__riscv_float_abi_soft)
+#error "__riscv_float_abi_soft"
+#endif
+#if !defined(__riscv_float_abi_single)
+#error "__riscv_float_abi_single"
+#endif
+#if defined(__riscv_float_abi_double)
+#error "__riscv_float_abi_double"
+#endif
+
+#if defined(__riscv_cmodel_medlow)
+#error "__riscv_cmodel_medlow"
+#endif
+#if !defined(__riscv_cmodel_medany)
+#error "__riscv_cmodel_medlow"
+#endif
+#if defined(__riscv_cmodel_pic)
+#error "__riscv_cmodel_medlow"
+#endif
+
+  return 0;
+}