From: Florian Krohm <florian@eich-krohm.de>
Date: Fri, 3 Aug 2012 00:42:18 +0000 (+0000)
Subject: Fix a bug in insn selection. Though shalt not modify the
X-Git-Tag: svn/VALGRIND_3_8_1^2~23
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=edaea6b0b2e9c4ae03b68f1c1010129fc407be9a;p=thirdparty%2Fvalgrind.git

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


git-svn-id: svn://svn.valgrind.org/vex/trunk@2455
---

diff --git a/VEX/priv/host_s390_isel.c b/VEX/priv/host_s390_isel.c
index d051409144..e54dd21e5e 100644
--- a/VEX/priv/host_s390_isel.c
+++ b/VEX/priv/host_s390_isel.c
@@ -2015,10 +2015,12 @@ s390_isel_cc(ISelEnv *env, IRExpr *cond)
          /* 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;