Clean up run script to use for testing Subzero.

tests_lit/reader_tests/switch.ll

 ; Test switch 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
 
 define void @testDefaultSwitch(i32 %a) {
 entry:
   switch i32 %a, label %exit [
   ]
 exit:
   ret void
 }
 
 ; CHECK:      define void @testDefaultSwitch(i32 %a) {
@@ skipping 469 matching lines @@
 ; CHECK-NEXT: entry:
 ; CHECK-NEXT:   %a = trunc i32 %p to i1
 ; CHECK-NEXT:   switch i1 %a, label %exit [
 ; CHECK-NEXT:     i1 -1, label %exit
 ; CHECK-NEXT:     i1 0, label %exit
 ; CHECK-NEXT:   ]
 ; CHECK-NEXT: exit:
 ; CHECK-NEXT:   ret void
 ; CHECK-NEXT: }