From adf22b3f5a9b826192c4582c897e9b8c8b4ff37a Mon Sep 17 00:00:00 2001
From: Andreas Krebbel <krebbel@linux.vnet.ibm.com>
Date: Tue, 1 Mar 2016 09:22:20 +0000
Subject: [PATCH] S/390: Get rid of Y constraint in left and logical right 
 shift patterns.

With this patch the substitution patterns added earlier are used for
the logical right shift and all the left shift patterns.

2016-03-01  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	* config/s390/s390.md ("<shift><mode>3"): Change predicate of
	op2 to nonmemory_operand.
	("*<shift>di3_31", "*<shift>di3_31_and"):
	Merge into single pattern definition ...
	("*<shift>di3_31<addr_style_op><masked_op>"): New pattern.
	("*<shift><mode>3", "*<shift><mode>3_and"): Merge into single
	pattern definition ...
	("*<shift><mode>3<addr_style_op><masked_op>"): New pattern.
	* config/s390/subst.md: Add ashift and lshiftrt to SUBST
	iterator.

From-SVN: r233844
---
 gcc/ChangeLog            | 13 ++++++++++
 gcc/config/s390/s390.md  | 55 ++++++++++++----------------------------
 gcc/config/s390/subst.md |  2 +-
 3 files changed, 30 insertions(+), 40 deletions(-)

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 416eed73b88..aa829f0eb2f 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,16 @@
+2016-03-01  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>
+
+	* config/s390/s390.md ("<shift><mode>3"): Change predicate of
+	op2 to nonmemory_operand.
+	("*<shift>di3_31", "*<shift>di3_31_and"):
+	Merge into single pattern definition ...
+	("*<shift>di3_31<addr_style_op><masked_op>"): New pattern.
+	("*<shift><mode>3", "*<shift><mode>3_and"): Merge into single
+	pattern definition ...
+	("*<shift><mode>3<addr_style_op><masked_op>"): New pattern.
+	* config/s390/subst.md: Add ashift and lshiftrt to SUBST
+	iterator.
+
 2016-03-01  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>
 
 	* config/s390/predicates.md (const_int_6bitset_operand): New
diff --git a/gcc/config/s390/s390.md b/gcc/config/s390/s390.md
index b7c037a5229..771d1e91c22 100644
--- a/gcc/config/s390/s390.md
+++ b/gcc/config/s390/s390.md
@@ -8408,60 +8408,37 @@
 (define_expand "<shift><mode>3"
   [(set (match_operand:DSI 0 "register_operand" "")
         (SHIFT:DSI (match_operand:DSI 1 "register_operand" "")
-                   (match_operand:SI 2 "shift_count_or_setmem_operand" "")))]
+                   (match_operand:SI 2 "nonmemory_operand" "")))]
   ""
   "")
 
+; ESA 64 bit register pair shift with reg or imm shift count
 ; sldl, srdl
-(define_insn "*<shift>di3_31"
-  [(set (match_operand:DI 0 "register_operand" "=d")
-        (SHIFT:DI (match_operand:DI 1 "register_operand" "0")
-                  (match_operand:SI 2 "shift_count_or_setmem_operand" "Y")))]
+(define_insn "*<shift>di3_31<addr_style_op><masked_op>"
+  [(set (match_operand:DI 0 "register_operand"            "=d")
+        (SHIFT:DI (match_operand:DI 1 "register_operand"   "0")
+                  (match_operand:SI 2 "nonmemory_operand" "an")))]
   "!TARGET_ZARCH"
-  "s<lr>dl\t%0,%Y2"
+  "s<lr>dl\t%0,<addr_style_op_ops>"
   [(set_attr "op_type"  "RS")
    (set_attr "atype"    "reg")
    (set_attr "z196prop" "z196_cracked")])
 
-; sll, srl, sllg, srlg, sllk, srlk
-(define_insn "*<shift><mode>3"
-  [(set (match_operand:GPR 0 "register_operand"                          "=d,d")
-        (SHIFT:GPR (match_operand:GPR 1 "register_operand"             "<d0>,d")
-                   (match_operand:SI 2 "shift_count_or_setmem_operand"    "Y,Y")))]
-  ""
-  "@
-   s<lr>l<g>\t%0,<1>%Y2
-   s<lr>l<gk>\t%0,%1,%Y2"
-  [(set_attr "op_type"  "RS<E>,RSY")
-   (set_attr "atype"    "reg,reg")
-   (set_attr "cpu_facility" "*,z196")
-   (set_attr "z10prop" "z10_super_E1,*")])
-
-; sldl, srdl
-(define_insn "*<shift>di3_31_and"
-  [(set (match_operand:DI 0 "register_operand" "=d")
-        (SHIFT:DI (match_operand:DI 1 "register_operand" "0")
-                  (and:SI (match_operand:SI 2 "shift_count_or_setmem_operand" "Y")
-			  (match_operand:SI 3 "const_int_operand"   "n"))))]
-  "!TARGET_ZARCH && (INTVAL (operands[3]) & 63) == 63"
-  "s<lr>dl\t%0,%Y2"
-  [(set_attr "op_type"  "RS")
-   (set_attr "atype"    "reg")])
 
+; 64 bit register shift with reg or imm shift count
 ; sll, srl, sllg, srlg, sllk, srlk
-(define_insn "*<shift><mode>3_and"
-  [(set (match_operand:GPR 0 "register_operand"                                 "=d,d")
-        (SHIFT:GPR (match_operand:GPR 1 "register_operand"                    "<d0>,d")
-                   (and:SI (match_operand:SI 2 "shift_count_or_setmem_operand"   "Y,Y")
-			   (match_operand:SI 3 "const_int_operand"               "n,n"))))]
-  "(INTVAL (operands[3]) & 63) == 63"
+(define_insn "*<shift><mode>3<addr_style_op><masked_op>"
+  [(set (match_operand:GPR 0 "register_operand"              "=d, d")
+        (SHIFT:GPR (match_operand:GPR 1 "register_operand" "<d0>, d")
+                   (match_operand:SI 2 "nonmemory_operand"   "an,an")))]
+  ""
   "@
-   s<lr>l<g>\t%0,<1>%Y2
-   s<lr>l<gk>\t%0,%1,%Y2"
+   s<lr>l<g>\t%0,<1><addr_style_op_ops>
+   s<lr>l<gk>\t%0,%1,<addr_style_op_ops>"
   [(set_attr "op_type"  "RS<E>,RSY")
    (set_attr "atype"    "reg,reg")
    (set_attr "cpu_facility" "*,z196")
-   (set_attr "z10prop" "z10_super_E1,*")])
+   (set_attr "z10prop"  "z10_super_E1,*")])
 
 ;
 ; ashr(di|si)3 instruction pattern(s).
diff --git a/gcc/config/s390/subst.md b/gcc/config/s390/subst.md
index c3761a972a2..907676af396 100644
--- a/gcc/config/s390/subst.md
+++ b/gcc/config/s390/subst.md
@@ -19,7 +19,7 @@
 ;; along with GCC; see the file COPYING3.  If not see
 ;; <http://www.gnu.org/licenses/>.
 
-(define_code_iterator SUBST [rotate])
+(define_code_iterator SUBST [rotate ashift lshiftrt])
 
 ; This expands an register/immediate operand to a register+immediate
 ; operand to draw advantage of the address style operand format
-- 
2.30.2