Clean up run script to use for testing Subzero.

tests_lit/reader_tests/alloca.ll

 ; Test if we can read alloca instructions.
 
-; 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
 
 ; Show examples where size is defined by a constant.
 
 define i32 @AllocaA0Size1() {
 entry:
   %array = alloca i8, i32 1
   %addr = ptrtoint i8* %array to i32
   ret i32 %addr
 
 ; CHECK:      entry:
@@ skipping 138 matching lines @@
 define i32 @AllocaVarsizeA16(i32 %n) {
 entry:
   %array = alloca i8, i32 %n, align 16
   %addr = ptrtoint i8* %array to i32
   ret i32 %addr
 
 ; CHECK:      entry:
 ; CHECK-NEXT:   %array = alloca i8, i32 %n, align 16
 ; CHECK-NEXT:   ret i32 %array
 }