From: Jeff Law <law@redhat.com>
Date: Tue, 24 Feb 2015 23:17:49 +0000 (-0700)
Subject: re PR target/65117 (xtensa: With -Os, invalid parameter c1 for reg_class_subset_p... 
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=48c55a0a46a26e9c90179c7613bb69640e21e73a;p=gcc.git

re PR target/65117 (xtensa: With -Os, invalid parameter c1 for reg_class_subset_p() to cause segment fault.)

       PR target/65117
        * config/xtensa/xtensa.md (zero_cost_loop_start): Reverse numbering
        of operand 0 and operand 2.
        (zero_cost_loop_end, loop_end): Similarly.

From-SVN: r220953
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 255d4ceaed1..776821bb545 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2015-02-24  Jeff Law  <law@redhat.com>
+
+	PR target/65117
+	* config/xtensa/xtensa.md (zero_cost_loop_start): Reverse numbering
+	of operand 0 and operand 2.
+	(zero_cost_loop_end, loop_end): Similarly.
+	
 2015-02-24  Aldy Hernandez  <aldyh@redhat.com>
 
 	* gimple.h (gimple_build_assign): Rename CXX_MEM_STAT_DECL to
diff --git a/gcc/config/xtensa/xtensa.md b/gcc/config/xtensa/xtensa.md
index 9c2afad3c64..ccaa2b2f560 100644
--- a/gcc/config/xtensa/xtensa.md
+++ b/gcc/config/xtensa/xtensa.md
@@ -1290,11 +1290,11 @@
 
 (define_insn "zero_cost_loop_start"
   [(set (pc)
-        (if_then_else (ne (match_operand:SI 0 "register_operand" "2")
+        (if_then_else (ne (match_operand:SI 2 "register_operand" "0")
                           (const_int 1))
                       (label_ref (match_operand 1 "" ""))
                       (pc)))
-   (set (match_operand:SI 2 "register_operand" "=a")
+   (set (match_operand:SI 0 "register_operand" "=a")
         (plus (match_dup 0)
               (const_int -1)))
    (unspec [(const_int 0)] UNSPEC_LSETUP_START)]
@@ -1306,11 +1306,11 @@
 
 (define_insn "zero_cost_loop_end"
   [(set (pc)
-        (if_then_else (ne (match_operand:SI 0 "nonimmediate_operand" "2,2")
+        (if_then_else (ne (match_operand:SI 2 "nonimmediate_operand" "0,0")
                           (const_int 1))
                       (label_ref (match_operand 1 "" ""))
                       (pc)))
-   (set (match_operand:SI 2 "nonimmediate_operand" "=a,m")
+   (set (match_operand:SI 0 "nonimmediate_operand" "=a,m")
         (plus (match_dup 0)
               (const_int -1)))
    (unspec [(const_int 0)] UNSPEC_LSETUP_END)
@@ -1323,11 +1323,11 @@
 
 (define_insn "loop_end"
   [(set (pc)
-        (if_then_else (ne (match_operand:SI 0 "register_operand" "2")
+        (if_then_else (ne (match_operand:SI 2 "register_operand" "0")
                           (const_int 1))
                       (label_ref (match_operand 1 "" ""))
                       (pc)))
-   (set (match_operand:SI 2 "register_operand" "=a")
+   (set (match_operand:SI 0 "register_operand" "=a")
         (plus (match_dup 0)
               (const_int -1)))
    (unspec [(const_int 0)] UNSPEC_LSETUP_END)]