Fix bug in generation of immediate shifts.

git-svn-id: svn://svn.valgrind.org/vex/trunk@139

diff --git a/VEX/priv/host-x86/isel.c b/VEX/priv/host-x86/isel.c
index 4ed5a73e6347850e86b4d4e90a6b409ab648e827..4e6f57e26bf71b53a08953abf8baa4c977ad007e 100644 (file)
--- a/VEX/priv/host-x86/isel.c
+++ b/VEX/priv/host-x86/isel.c
@@ -343,8 +343,8 @@ static HReg iselIntExpr_R ( ISelEnv* env, IRExpr* e )
             /* assert that the IR is well-typed */
             Int nshift;
             vassert(e->Iex.Binop.arg2->Iex.Const.con->tag == Ico_U8);
-           vassert(nshift >= 0);
             nshift = e->Iex.Binop.arg2->Iex.Const.con->Ico.U8;
+           vassert(nshift >= 0);
            if (nshift > 0)
                addInstr(env, X86Instr_Sh32(
                                 shOp,