; Test misexpect handles switch statements when debug information is stripped
; RUN: llvm-profdata merge %S/Inputs/misexpect-switch.proftext -o %t.profdata
; 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
; 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
; 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
; RUN: opt < %s -passes="function(lower-expect),pgo-instr-use" -pgo-test-profile-file=%t.profdata -S 2>&1 | FileCheck %s --check-prefix=DISABLED
; WARNING-DAG: warning: <unknown>:0:0: 0.00%
; WARNING-NOT: remark: <unknown>:0:0: Potential performance regression from use of the llvm.expect intrinsic: Annotation was correct on 0.00% (0 / 27943) of profiled executions.
; REMARK-NOT: warning: <unknown>:0:0: 0.00%
; REMARK-DAG: remark: <unknown>:0:0: Potential performance regression from use of the llvm.expect intrinsic: Annotation was correct on 0.00% (0 / 27943) of profiled executions.
; BOTH-DAG: warning: <unknown>:0:0: 0.00%
; BOTH-DAG: remark: <unknown>:0:0: Potential performance regression from use of the llvm.expect intrinsic: Annotation was correct on 0.00% (0 / 27943) of profiled executions.
; DISABLED-NOT: warning: <unknown>:0:0: 0.00%
; DISABLED-NOT: remark: <unknown>:0:0: Potential performance regression from use of the llvm.expect intrinsic: Annotation was correct on 0.00% (0 / 27943) of profiled executions.
; DISABLED-NOT: warning: <unknown>:0:0: 0.00%
; DISABLED-NOT: remark: <unknown>:0:0: Potential performance regression from use of the llvm.expect intrinsic: Annotation was correct on 0.00% (0 / 27943) of profiled executions.
; CORRECT-NOT: warning: {{.*}}
; CORRECT-NOT: remark: {{.*}}
; ModuleID = 'misexpect-switch.c'
source_filename = "misexpect-switch.c"
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
@inner_loop = dso_local constant i32 1000, align 4
@outer_loop = dso_local constant i32 20, align 4
@arry_size = dso_local constant i32 25, align 4
@arry = dso_local global [25 x i32] zeroinitializer, align 16
; Function Attrs: nounwind uwtable
define dso_local void @init_arry() #0 {
entry:
%i = alloca i32, align 4
call void @llvm.lifetime.start.p0(i64 4, ptr %i) #6
store i32 0, ptr %i, align 4, !tbaa !4
br label %for.cond
for.cond: ; preds = %for.inc, %entry
%0 = load i32, ptr %i, align 4, !tbaa !4
%cmp = icmp slt i32 %0, 25
br i1 %cmp, label %for.body, label %for.end
for.body: ; preds = %for.cond
%call = call i32 @rand() #6
%rem = srem i32 %call, 10
%1 = load i32, ptr %i, align 4, !tbaa !4
%idxprom = sext i32 %1 to i64
%arrayidx = getelementptr inbounds [25 x i32], ptr @arry, i64 0, i64 %idxprom
store i32 %rem, ptr %arrayidx, align 4, !tbaa !4
br label %for.inc
for.inc: ; preds = %for.body
%2 = load i32, ptr %i, align 4, !tbaa !4
%inc = add nsw i32 %2, 1
store i32 %inc, ptr %i, align 4, !tbaa !4
br label %for.cond
for.end: ; preds = %for.cond
call void @llvm.lifetime.end.p0(i64 4, ptr %i) #6
ret void
}
; Function Attrs: argmemonly nounwind willreturn
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1
; Function Attrs: nounwind readnone speculatable willreturn
declare void @llvm.dbg.declare(metadata, metadata, metadata) #2
; Function Attrs: nounwind
declare dso_local i32 @rand() #3
; Function Attrs: argmemonly nounwind willreturn
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1
; Function Attrs: nounwind uwtable
define dso_local i32 @main() #0 {
entry:
%retval = alloca i32, align 4
%val = alloca i32, align 4
%j = alloca i32, align 4
%condition = alloca i32, align 4
store i32 0, ptr %retval, align 4
call void @init_arry()
call void @llvm.lifetime.start.p0(i64 4, ptr %val) #6
store i32 0, ptr %val, align 4, !tbaa !4
call void @llvm.lifetime.start.p0(i64 4, ptr %j) #6
store i32 0, ptr %j, align 4, !tbaa !4
br label %for.cond
for.cond: ; preds = %for.inc, %entry
%0 = load i32, ptr %j, align 4, !tbaa !4
%cmp = icmp slt i32 %0, 20000
br i1 %cmp, label %for.body, label %for.end
for.body: ; preds = %for.cond
call void @llvm.lifetime.start.p0(i64 4, ptr %condition) #6
%call = call i32 @rand() #6
%rem = srem i32 %call, 5
store i32 %rem, ptr %condition, align 4, !tbaa !4
%1 = load i32, ptr %condition, align 4, !tbaa !4
%conv = zext i32 %1 to i64
%expval = call i64 @llvm.expect.i64(i64 %conv, i64 6)
switch i64 %expval, label %sw.default [
i64 0, label %sw.bb
i64 1, label %sw.bb2
i64 2, label %sw.bb2
i64 3, label %sw.bb2
i64 4, label %sw.bb3
]
sw.bb: ; preds = %for.body
%call1 = call i32 @sum(ptr @arry, i32 25)
%2 = load i32, ptr %val, align 4, !tbaa !4
%add = add nsw i32 %2, %call1
store i32 %add, ptr %val, align 4, !tbaa !4
br label %sw.epilog
sw.bb2: ; preds = %for.body, %for.body, %for.body
br label %sw.epilog
sw.bb3: ; preds = %for.body
%call4 = call i32 @random_sample(ptr @arry, i32 25)
%3 = load i32, ptr %val, align 4, !tbaa !4
%add5 = add nsw i32 %3, %call4
store i32 %add5, ptr %val, align 4, !tbaa !4
br label %sw.epilog
sw.default: ; preds = %for.body
unreachable
sw.epilog: ; preds = %sw.bb3, %sw.bb2, %sw.bb
call void @llvm.lifetime.end.p0(i64 4, ptr %condition) #6
br label %for.inc
for.inc: ; preds = %sw.epilog
%4 = load i32, ptr %j, align 4, !tbaa !4
%inc = add nsw i32 %4, 1
store i32 %inc, ptr %j, align 4, !tbaa !4
br label %for.cond
for.end: ; preds = %for.cond
call void @llvm.lifetime.end.p0(i64 4, ptr %j) #6
call void @llvm.lifetime.end.p0(i64 4, ptr %val) #6
ret i32 0
}
; Function Attrs: nounwind readnone willreturn
declare i64 @llvm.expect.i64(i64, i64) #4
declare dso_local i32 @sum(ptr, i32) #5
declare dso_local i32 @random_sample(ptr, i32) #5
attributes #0 = { nounwind uwtable "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-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { argmemonly nounwind willreturn }
attributes #2 = { nounwind readnone speculatable willreturn }
attributes #3 = { nounwind "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-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #4 = { nounwind readnone willreturn }
attributes #5 = { "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-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #6 = { nounwind }
!llvm.module.flags = !{!0, !1, !2}
!llvm.ident = !{!3}
!0 = !{i32 2, !"Dwarf Version", i32 4}
!1 = !{i32 2, !"Debug Info Version", i32 3}
!2 = !{i32 1, !"wchar_size", i32 4}
!3 = !{!"clang version 10.0.0 (60b79b85b1763d3d25630261e5cd1adb7f0835bc)"}
!4 = !{!5, !5, i64 0}
!5 = !{!"int", !6, i64 0}
!6 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C/C++ TBAA"}