re PR target/80246 (Builtin's for POWER's dxex[q] and diex[q] use the wrong types)

gcc/
	PR target/80246
	* config/rs6000/dfp.md (dfp_dxex_<mode>): Update mode of operand 0.
	(dfp_diex_<mode>): Update mode of operand 1.
	* doc/extend.texi (dxex, dxexq): Document change to return type.
	(diex, diexq): Document change to argument type.

gcc/testsuite/
	PR target/80246
	* gcc.target/powerpc/dfp-builtin-1.c: Remove unneeded dg-skip-if for
	Darwin and SPE.
	(dxex, dxexq): Update return type.
	(diex, diexq): Update argument type.
	* gcc.target/powerpc/pr80246.c: New test.

From-SVN: r246594

gcc/ChangeLog

+2017-03-30  Peter Bergner  <bergner@vnet.ibm.com>
+
+	PR target/80246
+	* config/rs6000/dfp.md (dfp_dxex_<mode>): Update mode of operand 0.
+	(dfp_diex_<mode>): Update mode of operand 1.
+	* doc/extend.texi (dxex, dxexq): Document change to return type.
+	(diex, diexq): Document change to argument type.
+
 2017-03-30  Martin Jambor  <mjambor@suse.cz>
 
 	PR ipa/77333

gcc/config/rs6000/dfp.md

@@ -348,16 +348,16 @@
   [(set_attr "type" "dfp")])
 
 (define_insn "dfp_dxex_<mode>"
-  [(set (match_operand:D64_D128 0 "gpc_reg_operand" "=d")
-	(unspec:D64_D128 [(match_operand:D64_D128 1 "gpc_reg_operand" "d")]
-			 UNSPEC_DXEX))]
+  [(set (match_operand:DI 0 "gpc_reg_operand" "=d")
+	(unspec:DI [(match_operand:D64_D128 1 "gpc_reg_operand" "d")]
+		   UNSPEC_DXEX))]
   "TARGET_DFP"
   "dxex<dfp_suffix> %0,%1"
   [(set_attr "type" "dfp")])
 
 (define_insn "dfp_diex_<mode>"
   [(set (match_operand:D64_D128 0 "gpc_reg_operand" "=d")
-	(unspec:D64_D128 [(match_operand:D64_D128 1 "gpc_reg_operand" "d")
+	(unspec:D64_D128 [(match_operand:DI 1 "gpc_reg_operand" "d")
 			  (match_operand:D64_D128 2 "gpc_reg_operand" "d")]
 			 UNSPEC_DXEX))]
   "TARGET_DFP"

gcc/doc/extend.texi

@@ -15427,14 +15427,14 @@ The following built-in functions are available for the PowerPC family
 of processors when hardware decimal floating point
 (@option{-mhard-dfp}) is available:
 @smallexample
-_Decimal64 __builtin_dxex (_Decimal64);
-_Decimal128 __builtin_dxexq (_Decimal128);
+long long __builtin_dxex (_Decimal64);
+long long __builtin_dxexq (_Decimal128);
 _Decimal64 __builtin_ddedpd (int, _Decimal64);
 _Decimal128 __builtin_ddedpdq (int, _Decimal128);
 _Decimal64 __builtin_denbcd (int, _Decimal64);
 _Decimal128 __builtin_denbcdq (int, _Decimal128);
-_Decimal64 __builtin_diex (_Decimal64, _Decimal64);
-_Decimal128 _builtin_diexq (_Decimal128, _Decimal128);
+_Decimal64 __builtin_diex (long long, _Decimal64);
+_Decimal128 _builtin_diexq (long long, _Decimal128);
 _Decimal64 __builtin_dscli (_Decimal64, int);
 _Decimal128 __builtin_dscliq (_Decimal128, int);
 _Decimal64 __builtin_dscri (_Decimal64, int);

gcc/testsuite/ChangeLog

+2017-03-30  Peter Bergner  <bergner@vnet.ibm.com>
+
+	PR target/80246
+	* gcc.target/powerpc/dfp-builtin-1.c: Remove unneeded dg-skip-if for
+	Darwin and SPE.
+	(dxex, dxexq): Update return type.
+	(diex, diexq): Update argument type.
+	* gcc.target/powerpc/pr80246.c: New test.
+
 2017-03-30  Martin Jambor  <mjambor@suse.cz>
 
 	PR ipa/77333

gcc/testsuite/gcc.target/powerpc/dfp-builtin-1.c

 /* { dg-do compile { target { powerpc*-*-linux* } } } */
-/* { dg-skip-if "" { powerpc*-*-darwin* } { "*" } { "" } } */
-/* { dg-skip-if "" { powerpc*-*-*spe* } { "*" } { "" } } */
 /* { dg-require-effective-target powerpc_vsx_ok } */
 /* { dg-skip-if "do not override -mcpu" { powerpc*-*-* } { "-mcpu=*" } { "-mcpu=power7" } } */
 /* { dg-options "-mcpu=power7 -O2" } */
@@ -10,11 +8,13 @@
 /* { dg-final { scan-assembler-times "diex "   1    } } */
 /* { dg-final { scan-assembler-times "dscli "  2    } } */
 /* { dg-final { scan-assembler-times "dscri "  2    } } */
+/* { dg-final { scan-assembler-times "std "    1    } } */
+/* { dg-final { scan-assembler-times "ld "     1    } } */
+/* { dg-final { scan-assembler-times "stfd "   1    } } */
+/* { dg-final { scan-assembler-times "lfd "    1    } } */
 /* { dg-final { scan-assembler-not   "bl __builtin" } } */
 /* { dg-final { scan-assembler-not   "dctqpq"       } } */
 /* { dg-final { scan-assembler-not   "drdpq"        } } */
-/* { dg-final { scan-assembler-not   "stfd"         } } */
-/* { dg-final { scan-assembler-not   "lfd"          } } */
 
 _Decimal64
 do_dedpd_0 (_Decimal64 a)
@@ -52,14 +52,14 @@ do_enbcd_1 (_Decimal64 a)
   return __builtin_denbcd (1, a);
 }
 
-_Decimal64
+long long
 do_xex (_Decimal64 a)
 {
   return __builtin_dxex (a);
 }
 
 _Decimal64
-do_iex (_Decimal64 a, _Decimal64 b)
+do_iex (long long a, _Decimal64 b)
 {
   return __builtin_diex (a, b);
 }

gcc/testsuite/gcc.target/powerpc/pr80246.c

+/* { dg-do compile { target { powerpc*-*-linux* } } } */
+/* { dg-require-effective-target dfp } */
+/* { dg-options "-O2" } */
+/* { dg-final { scan-assembler-times "dxex "  1 } } */
+/* { dg-final { scan-assembler-times "dxexq " 1 } } */
+/* { dg-final { scan-assembler-times "diex "  1 } } */
+/* { dg-final { scan-assembler-times "diexq " 1 } } */
+/* { dg-final { scan-assembler-not "bl __builtin" } } */
+/* Verify we don't generate any drintn., drintnq., dctfix, dctfixq, dcffix
+   or dcffixq instructions, as they imply we are getting unwanted casting.  */
+/* { dg-final { scan-assembler-not "drintn\[q\]\." } } */
+/* { dg-final { scan-assembler-not "dctfix\[q\]" } } */
+/* { dg-final { scan-assembler-not "dcffix\[q\]" } } */
+
+long long
+do_xex (_Decimal64 arg)
+{
+  return __builtin_dxex (arg);
+}
+
+long long
+do_xexq (_Decimal128 arg)
+{
+  return __builtin_dxexq (arg);
+}
+
+_Decimal64
+do_iex (long long exp, _Decimal64 arg)
+{
+  return __builtin_diex (exp, arg);
+}
+
+_Decimal128
+do_iexq (long long exp, _Decimal128 arg)
+{
+  return __builtin_diexq (exp, arg);
+}