1 ; RUN: opt < %s -pgo-instr-gen -S | FileCheck %s --check-prefix=GEN 2 ; RUN: llvm-profdata merge %S/Inputs/criticaledge.proftext -o %t.profdata 3 ; RUN: opt < %s -pgo-instr-use -pgo-test-profile-file=%t.profdata -S | FileCheck %s --check-prefix=USE 4 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 5 target triple = "x86_64-unknown-linux-gnu" 6 7 ; GEN: @__profn_test_criticalEdge = private constant [17 x i8] c"test_criticalEdge" 8 ; GEN: @__profn__stdin__bar = private constant [11 x i8] c"<stdin>:bar" 9 10 define i32 @test_criticalEdge(i32 %i, i32 %j) { 11 entry: 12 ; CHECK: entry: 13 ; GEN-NOT: call void @llvm.instrprof.increment 14 switch i32 %i, label %sw.default [ 15 i32 1, label %sw.bb 16 i32 2, label %sw.bb1 17 i32 3, label %sw.bb2 18 i32 4, label %sw.bb2 19 ; CHECK: i32 3, label %entry.sw.bb2_crit_edge 20 ; CHECK: i32 4, label %entry.sw.bb2_crit_edge1 21 i32 5, label %sw.bb2 22 ] 23 ; USE: ] 24 ; USE-SAME: !prof ![[BW_SWITCH:[0-9]+]] 25 26 ; CHECK: entry.sw.bb2_crit_edge1: 27 ; GEN: call void @llvm.instrprof.increment(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @__profn_test_criticalEdge, i32 0, i32 0), i64 82323253069, i32 8, i32 1) 28 ; CHECK: br label %sw.bb2 29 30 ; CHECK: entry.sw.bb2_crit_edge: 31 ; GEN: call void @llvm.instrprof.increment(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @__profn_test_criticalEdge, i32 0, i32 0), i64 82323253069, i32 8, i32 0) 32 ; CHECK: br label %sw.bb2 33 34 sw.bb: 35 ; GEN: sw.bb: 36 ; GEN: call void @llvm.instrprof.increment(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @__profn_test_criticalEdge, i32 0, i32 0), i64 82323253069, i32 8, i32 5) 37 %call = call i32 @bar(i32 2) 38 br label %sw.epilog 39 40 sw.bb1: 41 ; GEN: sw.bb1: 42 ; GEN: call void @llvm.instrprof.increment(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @__profn_test_criticalEdge, i32 0, i32 0), i64 82323253069, i32 8, i32 4) 43 %call2 = call i32 @bar(i32 1024) 44 br label %sw.epilog 45 46 sw.bb2: 47 ; GEN: sw.bb2: 48 ; GEN-NOT: call void @llvm.instrprof.increment 49 %cmp = icmp eq i32 %j, 2 50 br i1 %cmp, label %if.then, label %if.end 51 ; USE: br i1 %cmp, label %if.then, label %if.end 52 ; USE-SAME: !prof ![[BW_SW_BB2:[0-9]+]] 53 54 if.then: 55 ; GEN: if.then: 56 ; GEN: call void @llvm.instrprof.increment(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @__profn_test_criticalEdge, i32 0, i32 0), i64 82323253069, i32 8, i32 2) 57 %call4 = call i32 @bar(i32 4) 58 br label %return 59 60 if.end: 61 ; GEN: if.end: 62 ; GEN: call void @llvm.instrprof.increment(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @__profn_test_criticalEdge, i32 0, i32 0), i64 82323253069, i32 8, i32 3) 63 %call5 = call i32 @bar(i32 8) 64 br label %sw.epilog 65 66 sw.default: 67 ; GEN: sw.default: 68 ; GEN-NOT: call void @llvm.instrprof.increment 69 %call6 = call i32 @bar(i32 32) 70 %cmp7 = icmp sgt i32 %j, 10 71 br i1 %cmp7, label %if.then8, label %if.end9 72 ; USE: br i1 %cmp7, label %if.then8, label %if.end9 73 ; USE-SAME: !prof ![[BW_SW_DEFAULT:[0-9]+]] 74 75 if.then8: 76 ; GEN: if.then8: 77 ; GEN: call void @llvm.instrprof.increment(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @__profn_test_criticalEdge, i32 0, i32 0), i64 82323253069, i32 8, i32 7) 78 %add = add nsw i32 %call6, 10 79 br label %if.end9 80 81 if.end9: 82 ; GEN: if.end9: 83 ; GEN: call void @llvm.instrprof.increment(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @__profn_test_criticalEdge, i32 0, i32 0), i64 82323253069, i32 8, i32 6) 84 %res.0 = phi i32 [ %add, %if.then8 ], [ %call6, %sw.default ] 85 br label %sw.epilog 86 87 sw.epilog: 88 ; GEN: sw.epilog: 89 ; GEN-NOT: call void @llvm.instrprof.increment 90 %res.1 = phi i32 [ %res.0, %if.end9 ], [ %call5, %if.end ], [ %call2, %sw.bb1 ], [ %call, %sw.bb ] 91 br label %return 92 93 return: 94 ; GEN: return: 95 ; GEN-NOT: call void @llvm.instrprof.increment 96 %retval = phi i32 [ %res.1, %sw.epilog ], [ %call4, %if.then ] 97 ret i32 %retval 98 } 99 100 define internal i32 @bar(i32 %i) { 101 entry: 102 ; GEN: call void @llvm.instrprof.increment(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @__profn__stdin__bar, i32 0, i32 0), i64 12884901887, i32 1, i32 0) 103 ret i32 %i 104 } 105 106 ; USE: ![[BW_SWITCH]] = !{!"branch_weights", i32 2, i32 1, i32 0, i32 2, i32 1, i32 1} 107 ; USE: ![[BW_SW_BB2]] = !{!"branch_weights", i32 2, i32 2} 108 ; USE: ![[BW_SW_DEFAULT]] = !{!"branch_weights", i32 1, i32 1} 109
