From: Julian Seward <jseward@acm.org>
Date: Sun, 19 Sep 2004 12:00:15 +0000 (+0000)
Subject: Get rid of old condition-code handling stuff, that was unused.
X-Git-Tag: svn/VALGRIND_3_0_1^2~1061
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=ff62d9d1e6b031ffa380237c7a90eb8b8113fa90;p=thirdparty%2Fvalgrind.git

Get rid of old condition-code handling stuff, that was unused.


git-svn-id: svn://svn.valgrind.org/vex/trunk@273
---

diff --git a/VEX/priv/guest-x86/toIR.c b/VEX/priv/guest-x86/toIR.c
index 3751f73cb4..f3d323d00f 100644
--- a/VEX/priv/guest-x86/toIR.c
+++ b/VEX/priv/guest-x86/toIR.c
@@ -621,95 +621,6 @@ static Condcode positiveIse_Condcode ( Condcode  cond,
 }
 
 
-#if 0
-/* UNUSED -- DELETE */
-/* Get some particular flag to the lowest bit in a word.  It's not
-   masked, tho. */
-static IRExpr* flag_to_bit0 ( UInt ccmask, IRTemp eflags )
-{
-   Int shifts = 0;
-   vassert(ccmask == CC_MASK_C || ccmask == CC_MASK_P
-           || ccmask == CC_MASK_A || ccmask == CC_MASK_Z
-           || ccmask == CC_MASK_S || ccmask == CC_MASK_O);
-   while ((ccmask & 1) == 0) {
-      ccmask >>= 1;
-      shifts++;
-      vassert(ccmask != 0);
-   }
-   if (shifts == 0)
-      return mkexpr(eflags);
-   else
-      return binop(Iop_Shr32, mkexpr(eflags), mkU8(shifts));
-}
-
-
-/* Calculate the eflags, and hence return a 1-bit expression
-   which is 1 iff the given condition-code test would succeed. 
-   Returns a value :: Ity_Bit.
-*/
-static IRExpr* calculate_condition ( Condcode cond )
-{
-   IRExpr *e;
-   IRTemp eflags = newTemp(Ity_I32);
-   Bool   invert = (cond & 1) == 1;
-
-   assign( eflags, cond == CondB ? mk_calculate_eflags_c()
-                                 : mk_calculate_eflags_all() );
- 
-   switch (cond) {
-      case CondNO:
-      case CondO: /* OF == 1 */
-         e = flag_to_bit0( CC_MASK_O, eflags );
-         break;
-      case CondNZ:
-      case CondZ: /* ZF == 1 */
-         e = flag_to_bit0( CC_MASK_Z, eflags );
-         break;
-      case CondNB:
-      case CondB: /* CF == 1 */
-         e = flag_to_bit0( CC_MASK_C, eflags );
-         break;
-      case CondNBE:
-      case CondBE: /* (CF or ZF) == 1 */
-         e = binop(Iop_Or32,
-                   flag_to_bit0(CC_MASK_C,eflags),
-                   flag_to_bit0(CC_MASK_Z,eflags) );
-         break;
-      case CondNS:
-      case CondS: /* SF == 1 */
-         e = flag_to_bit0( CC_MASK_S, eflags );
-         break;
-      case CondNP:
-      case CondP: /* PF == 1 */
-         e = flag_to_bit0( CC_MASK_P, eflags );
-         break;
-      case CondNL:
-      case CondL: /* (SF xor OF) == 1 */
-         e = binop(Iop_Xor32,
-                   flag_to_bit0(CC_MASK_S,eflags),
-                   flag_to_bit0(CC_MASK_O,eflags)
-             );
-         break;
-      case CondNLE:
-      case CondLE: /* ((SF xor OF) or ZF)  == 1 */
-         e = binop(Iop_Or32,
-                   binop(Iop_Xor32,
-                         flag_to_bit0(CC_MASK_S,eflags),
-                         flag_to_bit0(CC_MASK_O,eflags)
-                   ),
-                   flag_to_bit0(CC_MASK_Z,eflags));
-         break;
-      default: 
-         vex_printf("calculate_condition(%d)\n", (Int)cond);
-         vpanic("calculate_condition(x86)");
-   }
-   return 
-      invert ? unop(Iop_32to1, unop(Iop_Not32, e))
-             : unop(Iop_32to1, e);
-}
-#endif
-
-
 /* -------------- Helpers for ADD/SUB with carry. -------------- */
 
 /* Given ta1, ta2 and tdst, compute tdst = ADC(ta1,ta2) and set flags