Combine the two H8 mode shortening peepholes into a single peephole

	* config/h8300/h8300.md (comparison shortening peepholes): Use
	a mode iterator to merge the HImode and SImode peepholes.

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index b566ca4b59193ebe8bc2d18cced85d64a276c986..fe42cee9e22ecde8491085ac4ffcfb798debcbbe 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2020-02-12  Jeff Law  <law@redhat.com>
+
+       * config/h8300/h8300.md (comparison shortening peepholes): Use
+       a mode iterator to merge the HImode and SImode peepholes.
+
 2020-02-12  Jakub Jelinek  <jakub@redhat.com>
 
        PR middle-end/93663

diff --git a/gcc/config/h8300/h8300.md b/gcc/config/h8300/h8300.md
index dcc9c3682d62c5009499536431503c0bab8c802f..f12eb46306f2dad1f19c828f9fd1b146b60a15d6 100644 (file)
--- a/gcc/config/h8300/h8300.md
+++ b/gcc/config/h8300/h8300.md
@@ -5366,38 +5366,13 @@
   {
     operands[5] = GEN_INT (- INTVAL (operands[1]));
   })
-;; Narrow the mode of testing if possible.
 
-(define_peephole2
-  [(set (match_operand:HI 0 "register_operand" "")
-       (and:HI (match_dup 0)
-               (match_operand:HI 1 "const_int_qi_operand" "")))
-   (set (cc0) (compare (match_dup 0)
-                      (const_int 0)))
-   (set (pc)
-       (if_then_else (match_operator 3 "eqne_operator"
-                      [(cc0) (const_int 0)])
-                     (label_ref (match_operand 2 "" ""))
-                     (pc)))]
-  "peep2_reg_dead_p (2, operands[0])"
-  [(set (match_dup 4)
-       (and:QI (match_dup 4)
-               (match_dup 5)))
-   (set (cc0) (compare (match_dup 4)
-                      (const_int 0)))
-   (set (pc)
-       (if_then_else (match_op_dup 3 [(cc0) (const_int 0)])
-                     (label_ref (match_dup 2))
-                     (pc)))]
-  {
-    operands[4] = gen_rtx_REG (QImode, REGNO (operands[0]));
-    operands[5] = gen_int_mode (INTVAL (operands[1]), QImode);
-  })
+;; Narrow the mode of testing if possible.
 
 (define_peephole2
-  [(set (match_operand:SI 0 "register_operand" "")
-       (and:SI (match_dup 0)
-               (match_operand:SI 1 "const_int_qi_operand" "")))
+  [(set (match_operand:HSI 0 "register_operand" "")
+       (and:HSI (match_dup 0)
+                (match_operand:HSI 1 "const_int_qi_operand" "")))
    (set (cc0) (compare (match_dup 0)
                       (const_int 0)))
    (set (pc)
@@ -5406,11 +5381,10 @@
                      (label_ref (match_operand 2 "" ""))
                      (pc)))]
   "((const_int_qi_operand (operands[1], QImode)
-     || const_int_hi_operand (operands[1], HImode))
+     || (GET_MODE (operands[0]) == SImode
+        && const_int_hi_operand (operands[1], HImode)))
     && peep2_reg_dead_p (2, operands[0]))"
-  [(set (match_dup 4)
-       (and:QI (match_dup 4)
-               (match_dup 5)))
+  [(set (match_dup 4) (match_dup 6))
    (set (cc0) (compare (match_dup 4)
                       (const_int 0)))
    (set (pc)
@@ -5423,6 +5397,7 @@
     mode = const_int_qi_operand (operands[1], QImode) ? QImode : HImode;
     operands[4] = gen_rtx_REG (mode, REGNO (operands[0]));
     operands[5] = gen_int_mode (INTVAL (operands[1]), mode);
+    operands[6] = gen_rtx_AND (mode, operands[4], operands[5]);
   })
 
 ;; These triggers right at the end of allocation of locals in the