| ; RUN: opt < %s -mtriple=x86_64-apple-darwin -mcpu=broadwell -mattr=+avx2 -S | FileCheck %s | 
 |  | 
 | ; Check that opt can rewrite function attributes target-cpu and target-features | 
 | ; using command line options -mcpu and -mattr. | 
 |  | 
 | ; CHECK: attributes #0 = { nounwind readnone ssp uwtable "target-cpu"="broadwell" "target-features"="+avx2" "use-soft-float"="false" } | 
 |  | 
 | define i32 @foo1() #0 { | 
 | entry: | 
 |   ret i32 0 | 
 | } | 
 |  | 
 | attributes #0 = { nounwind readnone ssp uwtable "target-cpu"="core2" "target-features"="+ssse3,+cx16,+sse,+sse2,+sse3" "use-soft-float"="false" } |