| ; 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"} |