Clean up run script to use for testing Subzero.

tests_lit/reader_tests/unreachable.ll

 ; Test parsing unreachable instruction.
 
-; RUN: llvm-as < %s | pnacl-freeze -allow-local-symbol-tables \
-; RUN:              | %llvm2ice -notranslate -verbose=inst -build-on-read \
-; RUN:                -allow-pnacl-reader-error-recovery \
-; RUN:                -allow-local-symbol-tables \
-; RUN:              | FileCheck %s
+; RUN: %p2i -i %s --insts | FileCheck %s
 
 define internal i32 @divide(i32 %num, i32 %den) {
 entry:
   %cmp = icmp ne i32 %den, 0
   br i1 %cmp, label %return, label %abort
 
 abort:                                            ; preds = %entry
   unreachable
 
 return:                                           ; preds = %entry
   %div = sdiv i32 %num, %den
   ret i32 %div
 }
 
 ; CHECK:      define internal i32 @divide(i32 %num, i32 %den) {
 ; CHECK-NEXT: entry:
 ; CHECK-NEXT:   %cmp = icmp ne i32 %den, 0
 ; CHECK-NEXT:   br i1 %cmp, label %return, label %abort
 ; CHECK-NEXT: abort:
 ; CHECK-NEXT:   unreachable
 ; CHECK-NEXT: return:
 ; CHECK-NEXT:   %div = sdiv i32 %num, %den
 ; CHECK-NEXT:   ret i32 %div
 ; CHECK-NEXT: }