[Valgrind-developers] vex: r2455: Fix a bug in insn selection. Though shalt not modify the

[<sv...@va...>]

florian	2012-08-03 01:42:18 +0100 (Fri, 03 Aug 2012)

  New Revision: 2455

  Log:
    Fix a bug in insn selection. Though shalt not modify the
    register returned by s390_isel_XYZ_expr...

  Modified files:
    trunk/priv/host_s390_isel.c


  Modified: trunk/priv/host_s390_isel.c (+3 -1)
===================================================================
--- trunk/priv/host_s390_isel.c	2012-08-01 23:04:13 +01:00 (rev 2454)
+++ trunk/priv/host_s390_isel.c	2012-08-03 01:42:18 +01:00 (rev 2455)
@@ -2015,10 +2015,12 @@
          /* Iop_32/64to1  select the LSB from their operand */
       case Iop_32to1:
       case Iop_64to1: {
-         HReg dst = s390_isel_int_expr(env, arg);
+         HReg dst = newVRegI(env);
+         HReg h1  = s390_isel_int_expr(env, arg);
 
          size = sizeofIRType(typeOfIRExpr(env->type_env, arg));
 
+         addInstr(env, s390_insn_move(size, dst, h1));
          addInstr(env, s390_insn_alu(size, S390_ALU_AND, dst, s390_opnd_imm(1)));
          addInstr(env, s390_insn_test(size, s390_opnd_reg(dst)));
          return S390_CC_NE;