PR target/10795

	* config/i386/i386.c (ix86_expand_carry_flag_compare): Don't
	swap comparison operands if doing so would generate an
	unrecognizable insn.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@69407 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 38b86a7..744f15a 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2003-07-15  Kazu Hirata  <kazu@cs.umass.edu>
+
+       PR target/10795
+       * config/i386/i386.c (ix86_expand_carry_flag_compare): Don't
+       swap comparison operands if doing so would generate an
+       unrecognizable insn.
+
 2003-07-15  Eric Botcazou  <ebotcazou@libertysurf.fr>
 
        PR optimization/11320

diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index e4a6622..e314ba5 100644 (file)
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -9383,6 +9383,11 @@ ix86_expand_carry_flag_compare (enum rtx_code code, rtx op0, rtx op1, rtx *pop)
            return false;
          code = (code == GTU ? GEU : LTU);
        }
+      else if (!nonimmediate_operand (op1, mode)
+              || !general_operand (op0, mode))
+       /* Swapping operands in this case would generate an
+          unrecognizable insn.  */
+       return false;
       else
        {
          rtx tmp = op1;