2 ; RUN: llvm-profdata merge %S/Inputs/misexpect-branch.proftext -o %t.profdata
5 ; RUN: opt < %s -lower-expect -pgo-instr-use -pgo-test-profile-file=%t.profdata -S -pgo-warn-misexpect 2>&1 | FileCheck %s --check-prefix=WARNING
6 ; RUN: opt < %s -lower-expect -pgo-instr-use -pgo-test-profile-file=%t.profdata -S -pass-remarks=misexpect 2>&1 | FileCheck %s --check-prefix=REMARK
7 ; RUN: opt < %s -lower-expect -pgo-instr-use -pgo-test-profile-file=%t.profdata -S -pgo-warn-misexpect -pass-remarks=misexpect 2>&1 | FileCheck %s --check-prefix=BOTH
8 ; RUN: opt < %s -lower-expect -pgo-instr-use -pgo-test-profile-file=%t.profdata -S 2>&1 | FileCheck %s --check-prefix=DISABLED
11 ; RUN: opt < %s -passes="function(lower-expect),pgo-instr-use" -pgo-test-profile-file=%t.profdata -pgo-warn-misexpect -S 2>&1 | FileCheck %s --check-prefix=WARNING
12 ; RUN: opt < %s -passes="function(lower-expect),pgo-instr-use" -pgo-test-profile-file=%t.profdata -pass-remarks=misexpect -S 2>&1 | FileCheck %s --check-prefix=REMARK
13 ; 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 --check-prefix=BOTH
14 ; RUN: opt < %s -passes="function(lower-expect),pgo-instr-use" -pgo-test-profile-file=%t.profdata -S 2>&1 | FileCheck %s --check-prefix=DISABLED
18 ; WARNING-DAG: warning: <unknown>:0:0: 19.98%
19 ; WARNING-NOT: remark: <unknown>:0:0: Potential performance regression from use of the llvm.expect intrinsic: Annotation was correct on 19.98% (399668 / 2000000) of profiled executions.
21 ; REMARK-NOT: warning: <unknown>:0:0: 19.98%
22 ; REMARK-DAG: remark: <unknown>:0:0: Potential performance regression from use of the llvm.expect intrinsic: Annotation was correct on 19.98% (399668 / 2000000) of profiled executions.
24 ; BOTH-DAG: warning: <unknown>:0:0: 19.98%
25 ; BOTH-DAG: remark: <unknown>:0:0: Potential performance regression from use of the llvm.expect intrinsic: Annotation was correct on 19.98% (399668 / 2000000) of profiled executions.
27 ; DISABLED-NOT: warning: <unknown>:0:0: 19.98%
28 ; DISABLED-NOT: remark: <unknown>:0:0: Potential performance regression from use of the llvm.expect intrinsic: Annotation was correct on 19.98% (399668 / 2000000) of profiled executions.
30 ; CHECK-DAG: !{!"misexpect", i64 1, i64 2000, i64 1}
34 ; ModuleID = 'misexpect-branch.c'
35 source_filename = "misexpect-branch.c"
36 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
37 target triple = "x86_64-unknown-linux-gnu"
39 @inner_loop = constant i32 100, align 4
40 @outer_loop = constant i32 2000, align 4
42 ; Function Attrs: nounwind
43 define i32 @bar() #0 {
45 %rando = alloca i32, align 4
46 %x = alloca i32, align 4
47 %0 = bitcast i32* %rando to i8*
48 call void @llvm.lifetime.start.p0i8(i64 4, i8* %0) #4
49 %call = call i32 (...) @buzz()
50 store i32 %call, i32* %rando, align 4, !tbaa !3
51 %1 = bitcast i32* %x to i8*
52 call void @llvm.lifetime.start.p0i8(i64 4, i8* %1) #4
53 store i32 0, i32* %x, align 4, !tbaa !3
54 %2 = load i32, i32* %rando, align 4, !tbaa !3
55 %rem = srem i32 %2, 200000
56 %cmp = icmp eq i32 %rem, 0
57 %lnot = xor i1 %cmp, true
58 %lnot1 = xor i1 %lnot, true
59 %lnot.ext = zext i1 %lnot1 to i32
60 %conv = sext i32 %lnot.ext to i64
61 %expval = call i64 @llvm.expect.i64(i64 %conv, i64 1)
62 %tobool = icmp ne i64 %expval, 0
63 br i1 %tobool, label %if.then, label %if.else
65 if.then: ; preds = %entry
66 %3 = load i32, i32* %rando, align 4, !tbaa !3
67 %call2 = call i32 @baz(i32 %3)
68 store i32 %call2, i32* %x, align 4, !tbaa !3
71 if.else: ; preds = %entry
72 %call3 = call i32 @foo(i32 50)
73 store i32 %call3, i32* %x, align 4, !tbaa !3
76 if.end: ; preds = %if.else, %if.then
77 %4 = load i32, i32* %x, align 4, !tbaa !3
78 %5 = bitcast i32* %x to i8*
79 call void @llvm.lifetime.end.p0i8(i64 4, i8* %5) #4
80 %6 = bitcast i32* %rando to i8*
81 call void @llvm.lifetime.end.p0i8(i64 4, i8* %6) #4
85 ; Function Attrs: argmemonly nounwind willreturn
86 declare void @llvm.lifetime.start.p0i8(i64 immarg, i8* nocapture) #1
88 declare i32 @buzz(...) #2
90 ; Function Attrs: nounwind readnone willreturn
91 declare i64 @llvm.expect.i64(i64, i64) #3
93 declare i32 @baz(i32) #2
95 declare i32 @foo(i32) #2
97 ; Function Attrs: argmemonly nounwind willreturn
98 declare void @llvm.lifetime.end.p0i8(i64 immarg, i8* nocapture) #1
100 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" }
101 attributes #1 = { argmemonly nounwind willreturn }
102 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" }
103 attributes #3 = { nounwind readnone willreturn }
104 attributes #4 = { nounwind }
106 !llvm.module.flags = !{!0, !1}
109 !0 = !{i32 2, !"Debug Info Version", i32 3}
110 !1 = !{i32 1, !"wchar_size", i32 4}
111 !2 = !{!"clang version 10.0.0 (trunk c20270bfffc9d6965219de339d66c61e9fe7d82d)"}
112 !3 = !{!4, !4, i64 0}
113 !4 = !{!"int", !5, i64 0}
114 !5 = !{!"omnipotent char", !6, i64 0}
115 !6 = !{!"Simple C/C++ TBAA"}