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: @__profn_test_simple_for = private constant [15 x i8] c"test_simple_for"
8
9define i32 @test_simple_for(i32 %n) {
10entry:
11; GEN: entry:
12; GEN-NOT: call void @llvm.instrprof.increment
13  br label %for.cond
14
15for.cond:
16; GEN: for.cond:
17; GEN-NOT: call void @llvm.instrprof.increment
18  %i = phi i32 [ 0, %entry ], [ %inc1, %for.inc ]
19  %sum = phi i32 [ 1, %entry ], [ %inc, %for.inc ]
20  %cmp = icmp slt i32 %i, %n
21  br i1 %cmp, label %for.body, label %for.end
22; USE: br i1 %cmp, label %for.body, label %for.end
23; USE-SAME: !prof ![[BW_FOR_COND:[0-9]+]]
24; USE: ![[BW_FOR_COND]] = !{!"branch_weights", i32 96, i32 4}
25
26for.body:
27; GEN: for.body:
28; GEN-NOT: call void @llvm.instrprof.increment
29  %inc = add nsw i32 %sum, 1
30  br label %for.inc
31
32for.inc:
33; GEN: for.inc:
34; 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)
35  %inc1 = add nsw i32 %i, 1
36  br label %for.cond
37
38for.end:
39; GEN: for.end:
40; 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)
41  ret i32 %sum
42}
43