Add workaround to allow testing of ARM integrated assembler.

tests_lit/assembler/arm32/branch-simple.ll

 ; Test branching instructions.
 ; TODO(kschimpf): Get this working.
 
 ; REQUIRES: allow_dump
 
 ; Compile using standalone assembler.
 ; RUN: %p2i --filetype=asm -i %s --target=arm32 --args -Om1 \
 ; RUN:   | FileCheck %s --check-prefix=ASM
 
 ; Show bytes in assembled standalone code.
 ; RUN: %p2i --filetype=asm -i %s --target=arm32 --assemble --disassemble \
 ; RUN:   --args -Om1 | FileCheck %s --check-prefix=DIS
 
 ; Compile using integrated assembler.
-; RUN: %p2i --filetype=iasm -i %s --target=arm32 --args -Om1 \
+; RUN: %p2i --filetype=iasm -i %s --target=arm32 --args -Om1 -unsafe-ias \
 ; RUN:   | FileCheck %s --check-prefix=IASM
 
 ; Show bytes in assembled integrated code.
 ; RUN: %p2i --filetype=iasm -i %s --target=arm32 --assemble --disassemble \
-; RUN:   --args -Om1 | FileCheck %s --check-prefix=DIS
+; RUN:   --args -Om1 -unsafe-ias | FileCheck %s --check-prefix=DIS
 
 define internal void @simple_uncond_branch() {
 ; DIS-LABEL: 00000000 <simple_uncond_branch>:
 ; ASM-LABEL: simple_uncond_branch:
 ; IASM-LABEL:simple_uncond_branch:
 
 ; ASM-NEXT:  .Lsimple_uncond_branch$__0:
 ; IASM-NEXT: .Lsimple_uncond_branch$__0:
 
   br label %l2
@@ skipping 34 matching lines @@
 
   ret void
 ; ASM-NEXT:     bx      lr
 ; IASM-NEXT:    .byte 0x1e
 ; IASM-NEXT:    .byte 0xff
 ; IASM-NEXT:    .byte 0x2f
 ; IASM-NEXT:    .byte 0xe1
 ; DIS-NEXT:   c:   e12fff1e
 
 }