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      1 ; RUN: opt -codegenprepare -S < %s | FileCheck %s
      2 
      3 @tmp = global i8 0
      4 
      5 ; CHECK-LABEL: define void @foo() {
      6 define void @foo() {
      7 enter:
      8   ; CHECK-NOT: !invariant.group
      9   ; CHECK-NOT: @llvm.invariant.group.barrier(
     10   ; CHECK: %val = load i8, i8* @tmp
     11   %val = load i8, i8* @tmp, !invariant.group !0
     12   %ptr = call i8* @llvm.invariant.group.barrier(i8* @tmp)
     13   
     14   ; CHECK: store i8 42, i8* @tmp
     15   store i8 42, i8* %ptr, !invariant.group !0
     16   
     17   ret void
     18 }
     19 ; CHECK-LABEL: }
     20 
     21 declare i8* @llvm.invariant.group.barrier(i8*)
     22 
     23 !0 = !{!"something"}