Disable Subzero IR generation for performance testing.

tests_lit/reader_tests/compare.ll

 ; Test if we can read compare instructions.
 
 ; RUN: %p2i -i %s --insts | FileCheck %s
+; RUN: %if --need=allow_disable_ir_gen --command \
+; RUN:   %p2i -i %s --args -notranslate -timing -no-ir-gen \
+; RUN: | %if --need=allow_disable_ir_gen --command \
+; RUN:   FileCheck --check-prefix=NOIR %s
 
 define i1 @IcmpI1(i32 %p1, i32 %p2) {
 entry:
   %a1 = trunc i32 %p1 to i1
   %a2 = trunc i32 %p2 to i1
   %veq = icmp eq i1 %a1, %a2
   %vne = icmp ne i1 %a1, %a2
   %vugt = icmp ugt i1 %a1, %a2
   %vuge = icmp uge i1 %a1, %a2
   %vult = icmp ult i1 %a1, %a2
@@ skipping 448 matching lines @@
 ; CHECK-NEXT:   %vueq = fcmp ueq <4 x float> %a1, %a2
 ; CHECK-NEXT:   %vugt = fcmp ugt <4 x float> %a1, %a2
 ; CHECK-NEXT:   %vuge = fcmp uge <4 x float> %a1, %a2
 ; CHECK-NEXT:   %vult = fcmp ult <4 x float> %a1, %a2
 ; CHECK-NEXT:   %vule = fcmp ule <4 x float> %a1, %a2
 ; CHECK-NEXT:   %vune = fcmp une <4 x float> %a1, %a2
 ; CHECK-NEXT:   %vuno = fcmp uno <4 x float> %a1, %a2
 ; CHECK-NEXT:   %vtrue = fcmp true <4 x float> %a1, %a2
 ; CHECK-NEXT:   ret <4 x i1> %voeq
 ; CHECK-NEXT: }
+
+; NOIR: Total across all functions