From: wiml <wiml@4a8a32a2-be11-0410-ad9d-d568d2c75423>
Date: Thu, 19 Sep 2002 06:52:00 +0000 (+0000)
Subject: fixed the stupid mistake I made in genMinus()
X-Git-Url: https://git.gag.com/?a=commitdiff_plain;h=f3bb9804b6fc03d01d2eba03d578863e8b63e06c;p=fw%2Fsdcc

fixed the stupid mistake I made in genMinus()


git-svn-id: https://sdcc.svn.sourceforge.net/svnroot/sdcc/trunk/sdcc@2102 4a8a32a2-be11-0410-ad9d-d568d2c75423
---

diff --git a/src/mcs51/gen.c b/src/mcs51/gen.c
index dea40707..86b86649 100644
--- a/src/mcs51/gen.c
+++ b/src/mcs51/gen.c
@@ -3451,9 +3451,7 @@ genMinus (iCode * ic)
   else
     {
       asmop *leftOp, *rightOp;
-      bool borrow;
 
-      borrow = FALSE;
       leftOp = AOP(IC_LEFT(ic));
       rightOp = AOP(IC_RIGHT(ic));
 
@@ -3462,7 +3460,7 @@ genMinus (iCode * ic)
 	  if (aopGetUsesAcc(rightOp, offset)) {
 	    wassertl(!aopGetUsesAcc(leftOp, offset), "accumulator clash");
 	    MOVA (aopGet(rightOp, offset, FALSE, TRUE));
-	    if (borrow) {
+	    if (offset > 0) {
 	      emitcode( "cpl", "c");
 	    } else {
 	      emitcode( "setb", "c");
@@ -3471,12 +3469,13 @@ genMinus (iCode * ic)
 	    emitcode("cpl", "a");
 	  } else {
 	    MOVA (aopGet (leftOp, offset, FALSE, FALSE));
-	    emitcode ((borrow? "subb" : "sub"), "a,%s",
+	    if (offset == 0)
+	      CLRC;
+	    emitcode ("subb", "a,%s",
 		      aopGet(rightOp, offset, FALSE, TRUE));
 	  }
 
 	  aopPut (AOP (IC_RESULT (ic)), "a", offset++);
-	  borrow = TRUE;  /* subsequent subtracts must propagate borrow */
 	}
     }