Subzero: Run sandboxed cross tests, and do some cleanup.

crosstest/test_icmp_i1vec.ll

-target triple = "i686-pc-linux-gnu"
-
 define <16 x i8> @_Z8icmpi1EqDv16_aS_(<16 x i8> %a, <16 x i8> %b) {
 entry:
   %a.trunc = trunc <16 x i8> %a to <16 x i1>
   %b.trunc = trunc <16 x i8> %b to <16 x i1>
   %cmp = icmp eq <16 x i1> %a.trunc, %b.trunc
   %cmp.sext = sext <16 x i1> %cmp to <16 x i8>
   ret <16 x i8> %cmp.sext
 }
 
 define <16 x i8> @_Z8icmpi1NeDv16_aS_(<16 x i8> %a, <16 x i8> %b) {
@@ skipping 249 matching lines @@
 }
 
 define <4 x i32> @_Z9icmpi1SleDv4_iS_(<4 x i32> %a, <4 x i32> %b) {
 entry:
   %a.trunc = trunc <4 x i32> %a to <4 x i1>
   %b.trunc = trunc <4 x i32> %b to <4 x i1>
   %cmp = icmp sle <4 x i1> %a.trunc, %b.trunc
   %cmp.sext = sext <4 x i1> %cmp to <4 x i32>
   ret <4 x i32> %cmp.sext
 }