1; RUN: opt < %s -pgo-instr-gen -S | FileCheck %s --check-prefix=GEN
2; RUN: llvm-profdata merge %S/Inputs/loop1.proftext -o %t.profdata
3; RUN: opt < %s -pgo-instr-use -pgo-test-profile-file=%t.profdata -S | FileCheck %s --check-prefix=USE
4target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
5target triple = "x86_64-unknown-linux-gnu"
6
7; GEN: $__llvm_profile_raw_version = comdat any
8; GEN: @__llvm_profile_raw_version = constant i64 72057594037927939, comdat
9; GEN: @__profn_test_simple_for = private constant [15 x i8] c"test_simple_for"
10
11define i32 @test_simple_for(i32 %n) {
12entry:
13; GEN: entry:
14; GEN-NOT: call void @llvm.instrprof.increment
15  br label %for.cond
16
17for.cond:
18; GEN: for.cond:
19; GEN-NOT: call void @llvm.instrprof.increment
20  %i = phi i32 [ 0, %entry ], [ %inc1, %for.inc ]
21  %sum = phi i32 [ 1, %entry ], [ %inc, %for.inc ]
22  %cmp = icmp slt i32 %i, %n
23  br i1 %cmp, label %for.body, label %for.end
24; USE: br i1 %cmp, label %for.body, label %for.end
25; USE-SAME: !prof ![[BW_FOR_COND:[0-9]+]]
26; USE: ![[BW_FOR_COND]] = !{!"branch_weights", i32 96, i32 4}
27
28for.body:
29; GEN: for.body:
30; GEN-NOT: call void @llvm.instrprof.increment
31  %inc = add nsw i32 %sum, 1
32  br label %for.inc
33
34for.inc:
35; GEN: for.inc:
36; GEN: call void @llvm.instrprof.increment(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @__profn_test_simple_for, i32 0, i32 0), i64 34137660316, i32 2, i32 0)
37  %inc1 = add nsw i32 %i, 1
38  br label %for.cond
39
40for.end:
41; GEN: for.end:
42; GEN: call void @llvm.instrprof.increment(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @__profn_test_simple_for, i32 0, i32 0), i64 34137660316, i32 2, i32 1)
43  ret i32 %sum
44}
45