From: Jeff Law <law@redhat.com>
Date: Mon, 17 Dec 2001 21:20:03 +0000 (-0700)
Subject: expmed.c (emit_store_flag): Extract updated comparison code from the return value... 
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=8f08e8c0109982010936ca486b0a7ef7a3d8bd88;p=platform%2Fupstream%2Fgcc.git

expmed.c (emit_store_flag): Extract updated comparison code from the return value of compare_from_rtx.

        * expmed.c (emit_store_flag): Extract updated comparison code
        from the return value of compare_from_rtx.
        * expr.c (do_store_flag): Similarly.

From-SVN: r48128
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 315c934..4ae0ce0 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+Mon Dec 17 14:21:21 2001  Jeffrey A Law  (law@redhat.com)
+
+	* expmed.c (emit_store_flag): Extract updated comparison code
+	from the return value of compare_from_rtx.
+	* expr.c (do_store_flag): Similarly.
+
 2001-12-17  Nick Clifton  <nickc@cambridge.redhat.com>
 
 	* caller-save.c (init_caller_save): Use MODE_BASE_REG_CLASS in
diff --git a/gcc/expmed.c b/gcc/expmed.c
index 8eecca3..f2c4aa2 100644
--- a/gcc/expmed.c
+++ b/gcc/expmed.c
@@ -4350,12 +4350,13 @@ emit_store_flag (target, code, op0, op1, mode, unsignedp, normalizep)
 		: normalizep == -1 ? constm1_rtx
 		: const_true_rtx);
 
-      /* If the code of COMPARISON doesn't match CODE, something is
-	 wrong; we can no longer be sure that we have the operation.  
-	 We could handle this case, but it should not happen.  */
+      /* The code of COMPARISON may not match CODE if compare_from_rtx
+	 decided to swap its operands and reverse the original code.
 
-      if (GET_CODE (comparison) != code)
-	abort ();
+	 We know that compare_from_rtx returns either a CONST_INT or
+	 a new comparison code, so it is safe to just extract the
+	 code from COMPARISON.  */
+      code = GET_CODE (comparison);
 
       /* Get a reference to the target in the proper mode for this insn.  */
       compare_mode = insn_data[(int) icode].operand[0].mode;
diff --git a/gcc/expr.c b/gcc/expr.c
index a36ce7b..74c8b44 100644
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -10235,6 +10235,14 @@ do_store_flag (exp, target, mode, only_cheap)
 	     || (result != const0_rtx && invert))
 	    ? const0_rtx : const1_rtx);
 
+  /* The code of RESULT may not match CODE if compare_from_rtx
+     decided to swap its operands and reverse the original code.
+
+     We know that compare_from_rtx returns either a CONST_INT or
+     a new comparison code, so it is safe to just extract the
+     code from RESULT.  */
+  code = GET_CODE (result);
+
   label = gen_label_rtx ();
   if (bcc_gen_fctn[(int) code] == 0)
     abort ();