Subzero: Use -filetype instead of -ias and -elf-writer.

tests_lit/llvm2ice_tests/globalinit.pnacl.ll

 ; Test of global initializers.
 
 ; REQUIRES: allow_dump
 
-; Test -ias=0 to test the lea "hack" until we are fully confident in -ias=1
-; RUN: %p2i -i %s --args --verbose none -ias=0 | FileCheck %s
+; Test -filetype=asm to test the lea "hack" until we are fully confident
+; in -filetype=iasm .
+; RUN: %p2i -i %s --args --verbose none -filetype=asm | FileCheck %s
 
-; Test -ias=1 and try to cross reference instructions w/ the symbol table.
+; Test -filetype=iasm and try to cross reference instructions w/ the
+; symbol table.
 ; RUN: %p2i -i %s --args --verbose none \
 ; RUN:   | llvm-mc -triple=i686-none-nacl -filetype=obj \
 ; RUN:   | llvm-objdump -d -r --symbolize -x86-asm-syntax=intel - \
 ; RUN:   | FileCheck --check-prefix=IAS %s
 ; RUN: %p2i -i %s --args --verbose none \
 ; RUN:   | llvm-mc -triple=i686-none-nacl -filetype=obj \
 ; RUN:   | llvm-objdump -d -t --symbolize -x86-asm-syntax=intel - \
 ; RUN:   | FileCheck --check-prefix=SYMTAB %s
 
 @PrimitiveInit = internal global [4 x i8] c"\1B\00\00\00", align 4
@@ skipping 148 matching lines @@
 define internal i32 @nacl_tp_tdb_offset(i32 %__0) {
 entry:
   ret i32 0
 }
 
 define internal i32 @nacl_tp_tls_offset(i32 %size) {
 entry:
   %result = sub i32 0, %size
   ret i32 %result
 }