xref: /llvm-project/lld/test/ELF/lto/pgo-warn-mismatch.ll (revision 8fa16cc628cb642798b3c218594cafa7426064e2) 
1; REQUIRES: x86
2
3; RUN: rm -rf %t && split-file %s %t
4; RUN: opt -module-summary %t/a.ll -o %t/a.bc
5; RUN: llvm-profdata merge %t/cs.proftext -o %t/cs.profdata
6
7;; Ensure lld generates warnings for profile cfg mismatch.
8; RUN: ld.lld --lto-cs-profile-file=%t/cs.profdata --lto-pgo-warn-mismatch -shared %t/a.bc -o /dev/null 2>&1 | FileCheck %s
9
10;; Ensure lld will not generate warnings for profile cfg mismatch.
11; RUN: ld.lld --lto-cs-profile-file=%t/cs.profdata --no-lto-pgo-warn-mismatch -shared --fatal-warnings %t/a.bc -o /dev/null
12
13; CHECK: warning: {{.*}} function control flow change detected (hash mismatch) f Hash = [[#]]
14
15;--- a.ll
16target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
17target triple = "x86_64-unknown-linux-gnu"
18
19define i32 @f(i32 returned %a) #0 {
20entry:
21  ret i32 %a
22}
23
24attributes #0 = { "target-cpu"="x86-64" }
25
26!llvm.module.flags = !{!0, !1}
27
28!0 = !{i32 1, !"wchar_size", i32 4}
29!1 = !{i32 1, !"ProfileSummary", !2}
30!2 = !{!3, !4, !5, !6, !7, !8, !9, !10, !11, !12}
31!3 = !{!"ProfileFormat", !"InstrProf"}
32!4 = !{!"TotalCount", i64 2}
33!5 = !{!"MaxCount", i64 1}
34!6 = !{!"MaxInternalCount", i64 0}
35!7 = !{!"MaxFunctionCount", i64 1}
36!8 = !{!"NumCounts", i64 3}
37!9 = !{!"NumFunctions", i64 2}
38!10 = !{!"IsPartialProfile", i64 0}
39!11 = !{!"PartialProfileRatio", double 0.000000e+00}
40!12 = !{!"DetailedSummary", !13}
41!13 = !{!14, !15, !16, !17, !18, !19, !20, !21, !22, !23, !24, !25, !26, !27, !28, !29}
42!14 = !{i32 10000, i64 0, i32 0}
43!15 = !{i32 100000, i64 0, i32 0}
44!16 = !{i32 200000, i64 0, i32 0}
45!17 = !{i32 300000, i64 0, i32 0}
46!18 = !{i32 400000, i64 0, i32 0}
47!19 = !{i32 500000, i64 1, i32 2}
48!20 = !{i32 600000, i64 1, i32 2}
49!21 = !{i32 700000, i64 1, i32 2}
50!22 = !{i32 800000, i64 1, i32 2}
51!23 = !{i32 900000, i64 1, i32 2}
52!24 = !{i32 950000, i64 1, i32 2}
53!25 = !{i32 990000, i64 1, i32 2}
54!26 = !{i32 999000, i64 1, i32 2}
55!27 = !{i32 999900, i64 1, i32 2}
56!28 = !{i32 999990, i64 1, i32 2}
57!29 = !{i32 999999, i64 1, i32 2}
58
59;--- cs.proftext
60# CSIR level Instrumentation Flag
61:csir
62f
63# Func Hash:
641535914979662757887
65# Num Counters:
662
67# Counter Values:
681
690
70
71