1; RUN: opt < %s -passes=pgo-instr-gen -pgo-instrument-entry=false -S | FileCheck %s --check-prefixes=GEN,NOTENTRY 2; RUN: llvm-profdata merge %S/Inputs/loop2.proftext -o %t.profdata 3; RUN: opt < %s -passes=pgo-instr-use -pgo-instrument-entry=false -pgo-test-profile-file=%t.profdata -S | FileCheck %s --check-prefix=USE 4; RUN: opt < %s -passes=pgo-instr-gen -pgo-instrument-entry=true -S | FileCheck %s --check-prefixes=GEN,ENTRY 5; RUN: llvm-profdata merge %S/Inputs/loop2_entry.proftext -o %t.profdata 6; RUN: opt < %s -passes=pgo-instr-use -pgo-instrument-entry=true -pgo-test-profile-file=%t.profdata -S | FileCheck %s --check-prefix=USE 7target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" 8target triple = "x86_64-unknown-linux-gnu" 9 10; GEN: $__llvm_profile_raw_version = comdat any 11; GEN: @__llvm_profile_raw_version = hidden constant i64 {{[0-9]+}}, comdat 12; GEN: @__profn_test_nested_for = private constant [15 x i8] c"test_nested_for" 13 14define i32 @test_nested_for(i32 %r, i32 %s) { 15entry: 16; GEN: entry: 17; NOTENTRY: call void @llvm.instrprof.increment(ptr @__profn_test_nested_for, i64 {{[0-9]+}}, i32 3, i32 2) 18; ENTRY: call void @llvm.instrprof.increment(ptr @__profn_test_nested_for, i64 {{[0-9]+}}, i32 3, i32 0) 19 br label %for.cond.outer 20 21for.cond.outer: 22; GEN: for.cond.outer: 23; GEN-NOT: call void @llvm.instrprof.increment 24 %i.0 = phi i32 [ 0, %entry ], [ %inc.2, %for.inc.outer ] 25 %sum.0 = phi i32 [ 1, %entry ], [ %sum.1, %for.inc.outer ] 26 %cmp = icmp slt i32 %i.0, %r 27 br i1 %cmp, label %for.body.outer, label %for.end.outer 28; USE: br i1 %cmp, label %for.body.outer, label %for.end.outer 29; USE-SAME: !prof ![[BW_FOR_COND_OUTER:[0-9]+]] 30 31for.body.outer: 32; GEN: for.body.outer: 33; NOTENTRY: call void @llvm.instrprof.increment(ptr @__profn_test_nested_for, i64 798733566382720768, i32 3, i32 1) 34; ENTRY: call void @llvm.instrprof.increment(ptr @__profn_test_nested_for, i64 798733566382720768, i32 3, i32 2) 35 br label %for.cond.inner 36 37for.cond.inner: 38; GEN: for.cond.inner: 39; GEN-NOT: call void @llvm.instrprof.increment 40 %j.0 = phi i32 [ 0, %for.body.outer ], [ %inc.1, %for.inc.inner ] 41 %sum.1 = phi i32 [ %sum.0, %for.body.outer ], [ %inc, %for.inc.inner ] 42 %cmp2 = icmp slt i32 %j.0, %s 43 br i1 %cmp2, label %for.body.inner, label %for.end.inner 44; USE: br i1 %cmp2, label %for.body.inner, label %for.end.inner 45; USE-SAME: !prof ![[BW_FOR_COND_INNER:[0-9]+]] 46 47for.body.inner: 48; GEN: for.body.inner: 49; GEN-NOT: call void @llvm.instrprof.increment 50 %inc = add nsw i32 %sum.1, 1 51 br label %for.inc.inner 52 53for.inc.inner: 54; GEN: for.inc.inner: 55; NOTENTRY: call void @llvm.instrprof.increment(ptr @__profn_test_nested_for, i64 {{[0-9]+}}, i32 3, i32 0) 56; ENTRY: call void @llvm.instrprof.increment(ptr @__profn_test_nested_for, i64 {{[0-9]+}}, i32 3, i32 1) 57 %inc.1 = add nsw i32 %j.0, 1 58 br label %for.cond.inner 59 60for.end.inner: 61; GEN: for.end.inner: 62 br label %for.inc.outer 63 64for.inc.outer: 65; GEN: for.inc.outer: 66; GEN-NOT: call void @llvm.instrprof.increment 67 %inc.2 = add nsw i32 %i.0, 1 68 br label %for.cond.outer 69 70for.end.outer: 71; GEN: for.end.outer: 72; GEN-NOT: call void @llvm.instrprof.increment 73; GEN: ret i32 74 ret i32 %sum.0 75} 76 77; USE-DAG: ![[BW_FOR_COND_OUTER]] = !{!"branch_weights", i32 10, i32 6} 78; USE-DAG: ![[BW_FOR_COND_INNER]] = !{!"branch_weights", i32 33, i32 10} 79 80