Disable Subzero IR generation for performance testing.

tests_lit/reader_tests/insertextract.ll

Index: tests_lit/reader_tests/insertextract.ll
diff --git a/tests_lit/reader_tests/insertextract.ll b/tests_lit/reader_tests/insertextract.ll
index 71161091e75af3b7c4bfa46c27bc55ebacd83a21..c8cb759358ce0567f91e0b5221b8992e25470315 100644
--- a/tests_lit/reader_tests/insertextract.ll
+++ b/tests_lit/reader_tests/insertextract.ll
@@ -3,6 +3,9 @@
 ; RUN: %p2i -i %s --insts | FileCheck %s
 ; RUN: %l2i -i %s --insts | %ifl FileCheck %s
 ; RUN: %lc2i -i %s --insts | %iflc FileCheck %s
+; RUN: %p2i -i %s --args -notranslate -timing -noIRgen \
+; RUN:    | %if --need=allow_disable_ir_gen \
+; RUN:      --command FileCheck --check-prefix=NOIR %s
 
 define void @ExtractV4xi1(<4 x i1> %v) {
 entry:
@@ -377,3 +380,5 @@ entry:
 ; CHECK-NEXT:   %r3 = insertelement <4 x float> %v, float %e, i32 3
 ; CHECK-NEXT:   ret <4 x float> %r3
 ; CHECK-NEXT: }
+
+; NOIR: Total across all functions