1 ; RUN: opt < %s -pgo-instr-gen -S | FileCheck %s --check-prefix=GEN 2 ; RUN: llvm-profdata merge %S/Inputs/loop2.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_nested_for = private constant [15 x i8] c"test_nested_for" 8 9 define i32 @test_nested_for(i32 %r, i32 %s) { 10 entry: 11 ; GEN: entry: 12 ; GEN-NOT: call void @llvm.instrprof.increment 13 br label %for.cond.outer 14 15 for.cond.outer: 16 ; GEN: for.cond.outer: 17 ; GEN-NOT: call void @llvm.instrprof.increment 18 %i.0 = phi i32 [ 0, %entry ], [ %inc.2, %for.inc.outer ] 19 %sum.0 = phi i32 [ 1, %entry ], [ %sum.1, %for.inc.outer ] 20 %cmp = icmp slt i32 %i.0, %r 21 br i1 %cmp, label %for.body.outer, label %for.end.outer 22 ; USE: br i1 %cmp, label %for.body.outer, label %for.end.outer 23 ; USE-SAME: !prof ![[BW_FOR_COND_OUTER:[0-9]+]] 24 25 for.body.outer: 26 ; GEN: for.body.outer: 27 ; GEN-NOT: call void @llvm.instrprof.increment 28 br label %for.cond.inner 29 30 for.cond.inner: 31 ; GEN: for.cond.inner: 32 ; GEN-NOT: call void @llvm.instrprof.increment 33 %j.0 = phi i32 [ 0, %for.body.outer ], [ %inc.1, %for.inc.inner ] 34 %sum.1 = phi i32 [ %sum.0, %for.body.outer ], [ %inc, %for.inc.inner ] 35 %cmp2 = icmp slt i32 %j.0, %s 36 br i1 %cmp2, label %for.body.inner, label %for.end.inner 37 ; USE: br i1 %cmp2, label %for.body.inner, label %for.end.inner 38 ; USE-SAME: !prof ![[BW_FOR_COND_INNER:[0-9]+]] 39 40 for.body.inner: 41 ; GEN: for.body.inner: 42 ; GEN-NOT: call void @llvm.instrprof.increment 43 %inc = add nsw i32 %sum.1, 1 44 br label %for.inc.inner 45 46 for.inc.inner: 47 ; GEN: for.inc.inner: 48 ; GEN: call void @llvm.instrprof.increment(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @__profn_test_nested_for, i32 0, i32 0), i64 53929068288, i32 3, i32 0) 49 %inc.1 = add nsw i32 %j.0, 1 50 br label %for.cond.inner 51 52 for.end.inner: 53 ; GEN: for.end.inner: 54 br label %for.inc.outer 55 56 for.inc.outer: 57 ; GEN: for.inc.outer: 58 ; GEN: call void @llvm.instrprof.increment(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @__profn_test_nested_for, i32 0, i32 0), i64 53929068288, i32 3, i32 1) 59 %inc.2 = add nsw i32 %i.0, 1 60 br label %for.cond.outer 61 62 for.end.outer: 63 ; GEN: for.end.outer: 64 ; GEN: call void @llvm.instrprof.increment(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @__profn_test_nested_for, i32 0, i32 0), i64 53929068288, i32 3, i32 2) 65 ret i32 %sum.0 66 } 67 68 ; USE-DAG: ![[BW_FOR_COND_OUTER]] = !{!"branch_weights", i32 10, i32 6} 69 ; USE-DAG: ![[BW_FOR_COND_INNER]] = !{!"branch_weights", i32 33, i32 10} 70 71
