From: Richard Kenner <kenner@gcc.gnu.org>
Date: Fri, 12 Nov 1993 15:24:51 +0000 (-0500)
Subject: (comparison): Don't emit invalid optimization for (set (reg) (comparison)) and...
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=66b804be219715e7855a4e4f4091fa2d3cb588ef;p=gcc.git

(comparison): Don't emit invalid optimization for (set (reg) (comparison)) and...

(comparison): Don't emit invalid optimization
for (set (reg) (comparison)) and (set (reg) (neg (comparison)))
when comparison is LT.

From-SVN: r6075
---

diff --git a/gcc/config/arm/arm.md b/gcc/config/arm/arm.md
index 68d5c15838a..8b2cd62965b 100644
--- a/gcc/config/arm/arm.md
+++ b/gcc/config/arm/arm.md
@@ -4229,17 +4229,8 @@
    (clobber (reg 24))]
   ""
   "*
-  if (GET_CODE (operands[1]) == LT)
-    {
-      if (operands[3] == const0_rtx)
-	return arm_output_asm_insn (\"mov\\t%0, %2, lsr #31\", operands);
-      if (GET_CODE (operands[3]) == CONST_INT
-	  && !const_ok_for_arm (INTVAL (operands[3])))
-	arm_output_asm_insn (\"add\\t%0, %2, #%n3\", operands);
-      else
-        arm_output_asm_insn (\"sub\\t%0, %2, %3\", operands);
-      return arm_output_asm_insn (\"mov\\t%0, %0, lsr #31\", operands);
-    }
+  if (GET_CODE (operands[1]) == LT && operands[3] == const0_rtx)
+    return arm_output_asm_insn (\"mov\\t%0, %2, lsr #31\", operands);
   if (GET_CODE (operands[1]) == GE && operands[3] == const0_rtx)
     {
       arm_output_asm_insn (\"mvn\\t%0, %2\", operands);
@@ -4647,13 +4638,8 @@
    (clobber (reg 24))]
   ""
   "*
-  if (GET_CODE (operands[3]) == LT)
-    {
-      if (operands[3] == const0_rtx)
-	return arm_output_asm_insn (\"mov\\t%0, %1, asr #31\", operands);
-      arm_output_asm_insn (\"sub\\t%0, %1, %2\", operands);
-      return arm_output_asm_insn (\"mov\\t%0, %0, asr #31\", operands);
-    }
+  if (GET_CODE (operands[3]) == LT && operands[3] == const0_rtx)
+    return arm_output_asm_insn (\"mov\\t%0, %1, asr #31\", operands);
   if (GET_CODE (operands[3]) == NE)
     {
       arm_output_asm_insn (\"subs\\t%0, %1, %2\", operands);