Generate PADDI to add large constants if -mcpu=future.

2019-12-12  Michael Meissner  <meissner@linux.ibm.com>

	* config/rs6000/predicates.md (add_operand): Allow eI constants.
	* config/rs6000/rs6000.md (add<mode>3): Add alternative to
	generate PADDI for 34-bit constants if -mcpu=future.

From-SVN: r279476

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index f8b3ef2231872eec37cf869452a03b806a2d8bde..634d3f8e4b51b8739c2d77e71a4b043c2f8c79b9 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -2,10 +2,13 @@
 
        * config/rs6000/rs6000.c (num_insns_constant_gpr): Return 1 if the
        constant can be loaded with PLI if -mcpu=future.
-       * config/rs6000/rs6000.md (movdi_internal64): Add alternative to
-       use PLI to load up 34-bit constants if -mcpu=future.
+       * config/rs6000/rs6000.md (add<mode>3): Add alternative to
+       generate PADDI for 34-bit constants if -mcpu=future.
+       (movdi_internal64): Add alternative to use PLI to load up 34-bit
+       constants if -mcpu=future.
        (movsi_internal1): Add alternative to use PLI to load up 32-bit
        constants if -mcpu=future.
+       * config/rs6000/predicates.md (add_operand): Allow eI constants.
 
 2019-12-17  Jakub Jelinek  <jakub@redhat.com>
 

diff --git a/gcc/config/rs6000/predicates.md b/gcc/config/rs6000/predicates.md
index 42c41b323059b484f655e9a711236c9c672416c8..718ddc45f957be566e09c8283d7a0693212739eb 100644 (file)
--- a/gcc/config/rs6000/predicates.md
+++ b/gcc/config/rs6000/predicates.md
@@ -839,7 +839,8 @@
 (define_predicate "add_operand"
   (if_then_else (match_code "const_int")
     (match_test "satisfies_constraint_I (op)
-                || satisfies_constraint_L (op)")
+                || satisfies_constraint_L (op)
+                || satisfies_constraint_eI (op)")
     (match_operand 0 "gpc_reg_operand")))
 
 ;; Return 1 if the operand is either a non-special register, or 0, or -1.

diff --git a/gcc/config/rs6000/rs6000.md b/gcc/config/rs6000/rs6000.md
index 6e12d62e23a6b34f574c4349a2c5999be4789ec9..ed85a05826cac7b9367e03194c8a3b795410c912 100644 (file)
--- a/gcc/config/rs6000/rs6000.md
+++ b/gcc/config/rs6000/rs6000.md
@@ -1761,15 +1761,17 @@
 })
 
 (define_insn "*add<mode>3"
-  [(set (match_operand:GPR 0 "gpc_reg_operand" "=r,r,r")
-       (plus:GPR (match_operand:GPR 1 "gpc_reg_operand" "%r,b,b")
-                 (match_operand:GPR 2 "add_operand" "r,I,L")))]
+  [(set (match_operand:GPR 0 "gpc_reg_operand" "=r,r,r,r")
+       (plus:GPR (match_operand:GPR 1 "gpc_reg_operand" "%r,b,b,b")
+                 (match_operand:GPR 2 "add_operand" "r,I,L,eI")))]
   ""
   "@
    add %0,%1,%2
    addi %0,%1,%2
-   addis %0,%1,%v2"
-  [(set_attr "type" "add")])
+   addis %0,%1,%v2
+   addi %0,%1,%2"
+  [(set_attr "type" "add")
+   (set_attr "isa" "*,*,*,fut")])
 
 (define_insn "*addsi3_high"
   [(set (match_operand:SI 0 "gpc_reg_operand" "=b")