1 ; Test misexpect checks do not issue diagnostics when profiling weights and
2 ; branch weights added by llvm.expect agree
4 ; RUN: llvm-profdata merge %S/Inputs/misexpect-branch-correct.proftext -o %t.profdata
6 ; RUN: opt < %s -passes="function(lower-expect),pgo-instr-use" -pgo-test-profile-file=%t.profdata -pgo-warn-misexpect -pass-remarks=misexpect -S 2>&1 | FileCheck %s
8 ; CHECK-NOT: warning: {{.*}}
9 ; CHECK-NOT: remark: {{.*}}
10 ; CHECK: !{!"branch_weights", i32 0, i32 200000}
13 ; ModuleID = 'misexpect-branch-correct.c'
14 source_filename = "misexpect-branch-correct.c"
15 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
16 target triple = "x86_64-unknown-linux-gnu"
18 @inner_loop = constant i32 100, align 4
19 @outer_loop = constant i32 2000, align 4
21 ; Function Attrs: nounwind
22 define i32 @bar() #0 {
24 %rando = alloca i32, align 4
25 %x = alloca i32, align 4
26 call void @llvm.lifetime.start.p0(i64 4, ptr %rando) #4
27 %call = call i32 (...) @buzz()
28 store i32 %call, ptr %rando, align 4, !tbaa !3
29 call void @llvm.lifetime.start.p0(i64 4, ptr %x) #4
30 store i32 0, ptr %x, align 4, !tbaa !3
31 %0 = load i32, ptr %rando, align 4, !tbaa !3
32 %rem = srem i32 %0, 200000
33 %cmp = icmp eq i32 %rem, 0
34 %lnot = xor i1 %cmp, true
35 %lnot1 = xor i1 %lnot, true
36 %lnot.ext = zext i1 %lnot1 to i32
37 %conv = sext i32 %lnot.ext to i64
38 %expval = call i64 @llvm.expect.i64(i64 %conv, i64 0)
39 %tobool = icmp ne i64 %expval, 0
40 br i1 %tobool, label %if.then, label %if.else
42 if.then: ; preds = %entry
43 %1 = load i32, ptr %rando, align 4, !tbaa !3
44 %call2 = call i32 @baz(i32 %1)
45 store i32 %call2, ptr %x, align 4, !tbaa !3
48 if.else: ; preds = %entry
49 %call3 = call i32 @foo(i32 50)
50 store i32 %call3, ptr %x, align 4, !tbaa !3
53 if.end: ; preds = %if.else, %if.then
54 %2 = load i32, ptr %x, align 4, !tbaa !3
55 call void @llvm.lifetime.end.p0(i64 4, ptr %x) #4
56 call void @llvm.lifetime.end.p0(i64 4, ptr %rando) #4
60 ; Function Attrs: argmemonly nounwind willreturn
61 declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1
63 declare i32 @buzz(...) #2
65 ; Function Attrs: nounwind readnone willreturn
66 declare i64 @llvm.expect.i64(i64, i64) #3
68 declare i32 @baz(i32) #2
70 declare i32 @foo(i32) #2
72 ; Function Attrs: argmemonly nounwind willreturn
73 declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1
75 attributes #0 = { nounwind "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="none" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-features"="+cx8,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
76 attributes #1 = { argmemonly nounwind willreturn }
77 attributes #2 = { "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="none" "less-precise-fpmad"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-features"="+cx8,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
78 attributes #3 = { nounwind readnone willreturn }
79 attributes #4 = { nounwind }
81 !llvm.module.flags = !{!0, !1}
84 !0 = !{i32 2, !"Debug Info Version", i32 3}
85 !1 = !{i32 1, !"wchar_size", i32 4}
86 !2 = !{!"clang version 10.0.0 (c20270bfffc9d6965219de339d66c61e9fe7d82d)"}
88 !4 = !{!"int", !5, i64 0}
89 !5 = !{!"omnipotent char", !6, i64 0}
90 !6 = !{!"Simple C/C++ TBAA"}