1 ; RUN: llc -mcpu=corei7 -mtriple=x86_64-linux < %s | FileCheck %s 2 ; RUN: llc -mcpu=corei7 -mtriple=x86_64-linux -precise-rotation-cost < %s | FileCheck %s -check-prefix=CHECK-PROFILE 3 4 define void @foo() { 5 ; Test a nested loop case when profile data is not available. 6 ; 7 ; CHECK-LABEL: foo: 8 ; CHECK: callq b 9 ; CHECK: callq c 10 ; CHECK: callq d 11 ; CHECK: callq e 12 ; CHECK: callq f 13 ; CHECK: callq g 14 ; CHECK: callq h 15 16 entry: 17 br label %header 18 19 header: 20 call void @b() 21 %call = call zeroext i1 @a() 22 br i1 %call, label %if.then, label %if.else, !prof !2 23 24 if.then: 25 br label %header2 26 27 header2: 28 call void @c() 29 %call1 = call zeroext i1 @a() 30 br i1 %call1, label %if.then2, label %if.else2, !prof !2 31 32 if.then2: 33 call void @d() 34 br label %if.end2 35 36 if.else2: 37 call void @e() 38 br label %if.end2 39 40 if.end2: 41 call void @f() 42 %call2 = call zeroext i1 @a() 43 br i1 %call2, label %header2, label %if.end 44 45 if.else: 46 call void @g() 47 br label %if.end 48 49 if.end: 50 call void @h() 51 %call3 = call zeroext i1 @a() 52 br i1 %call3, label %header, label %end 53 54 end: 55 ret void 56 } 57 58 define void @bar() !prof !1 { 59 ; Test a nested loop case when profile data is available. 60 ; 61 ; CHECK-PROFILE-LABEL: bar: 62 ; CHECK-PROFILE: callq e 63 ; CHECK-PROFILE: callq f 64 ; CHECK-PROFILE: callq c 65 ; CHECK-PROFILE: callq d 66 ; CHECK-PROFILE: callq h 67 ; CHECK-PROFILE: callq b 68 ; CHECK-PROFILE: callq g 69 70 entry: 71 br label %header 72 73 header: 74 call void @b() 75 %call = call zeroext i1 @a() 76 br i1 %call, label %if.then, label %if.else, !prof !2 77 78 if.then: 79 br label %header2 80 81 header2: 82 call void @c() 83 %call1 = call zeroext i1 @a() 84 br i1 %call1, label %if.then2, label %if.else2, !prof !2 85 86 if.then2: 87 call void @d() 88 br label %if.end2 89 90 if.else2: 91 call void @e() 92 br label %if.end2 93 94 if.end2: 95 call void @f() 96 %call2 = call zeroext i1 @a() 97 br i1 %call2, label %header2, label %if.end 98 99 if.else: 100 call void @g() 101 br label %if.end 102 103 if.end: 104 call void @h() 105 %call3 = call zeroext i1 @a() 106 br i1 %call3, label %header, label %end 107 108 end: 109 ret void 110 } 111 112 declare zeroext i1 @a() 113 declare void @b() 114 declare void @c() 115 declare void @d() 116 declare void @e() 117 declare void @f() 118 declare void @g() 119 declare void @h() 120 121 !1 = !{!"function_entry_count", i64 1} 122 !2 = !{!"branch_weights", i32 16, i32 16} 123
