| ; RUN: llc -mcpu=corei7 -mtriple=x86_64-linux < %s | FileCheck %s | |
| ; RUN: llc -mcpu=corei7 -mtriple=x86_64-linux -precise-rotation-cost < %s | FileCheck %s -check-prefix=CHECK-PROFILE | |
| define void @foo() { | |
| ; Test a nested loop case when profile data is not available. | |
| ; | |
| ; CHECK-LABEL: foo: | |
| ; CHECK: callq g | |
| ; CHECK: callq h | |
| ; CHECK: callq b | |
| ; CHECK: callq e | |
| ; CHECK: callq f | |
| ; CHECK: callq c | |
| ; CHECK: callq d | |
| entry: | |
| br label %header | |
| header: | |
| call void @b() | |
| %call = call zeroext i1 @a() | |
| br i1 %call, label %if.then, label %if.else, !prof !2 | |
| if.then: | |
| br label %header2 | |
| header2: | |
| call void @c() | |
| %call1 = call zeroext i1 @a() | |
| br i1 %call1, label %if.then2, label %if.else2, !prof !2 | |
| if.then2: | |
| call void @d() | |
| br label %if.end2 | |
| if.else2: | |
| call void @e() | |
| br label %if.end2 | |
| if.end2: | |
| call void @f() | |
| %call2 = call zeroext i1 @a() | |
| br i1 %call2, label %header2, label %if.end | |
| if.else: | |
| call void @g() | |
| br label %if.end | |
| if.end: | |
| call void @h() | |
| %call3 = call zeroext i1 @a() | |
| br i1 %call3, label %header, label %end | |
| end: | |
| ret void | |
| } | |
| define void @bar() !prof !1 { | |
| ; Test a nested loop case when profile data is available. | |
| ; | |
| ; CHECK-PROFILE-LABEL: bar: | |
| ; CHECK-PROFILE: callq h | |
| ; CHECK-PROFILE: callq b | |
| ; CHECK-PROFILE: callq g | |
| ; CHECK-PROFILE: callq e | |
| ; CHECK-PROFILE: callq f | |
| ; CHECK-PROFILE: callq c | |
| ; CHECK-PROFILE: callq d | |
| entry: | |
| br label %header | |
| header: | |
| call void @b() | |
| %call = call zeroext i1 @a() | |
| br i1 %call, label %if.then, label %if.else, !prof !2 | |
| if.then: | |
| br label %header2 | |
| header2: | |
| call void @c() | |
| %call1 = call zeroext i1 @a() | |
| br i1 %call1, label %if.then2, label %if.else2, !prof !2 | |
| if.then2: | |
| call void @d() | |
| br label %if.end2 | |
| if.else2: | |
| call void @e() | |
| br label %if.end2 | |
| if.end2: | |
| call void @f() | |
| %call2 = call zeroext i1 @a() | |
| br i1 %call2, label %header2, label %if.end | |
| if.else: | |
| call void @g() | |
| br label %if.end | |
| if.end: | |
| call void @h() | |
| %call3 = call zeroext i1 @a() | |
| br i1 %call3, label %header, label %end | |
| end: | |
| ret void | |
| } | |
| declare zeroext i1 @a() | |
| declare void @b() | |
| declare void @c() | |
| declare void @d() | |
| declare void @e() | |
| declare void @f() | |
| declare void @g() | |
| declare void @h() | |
| !1 = !{!"function_entry_count", i64 1} | |
| !2 = !{!"branch_weights", i32 16, i32 16} |