forked from OSchip/llvm-project
197 lines
9.3 KiB
LLVM
197 lines
9.3 KiB
LLVM
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; RUN: llvm-profdata merge %S/Inputs/misexpect-switch.proftext -o %t.profdata
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; 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
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; 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
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; 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
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; RUN: opt < %s -lower-expect -pgo-instr-use -pgo-test-profile-file=%t.profdata -S 2>&1 | FileCheck %s --check-prefix=DISABLED
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; New PM
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; 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
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; 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
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; 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
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; RUN: opt < %s -passes="function(lower-expect),pgo-instr-use" -pgo-test-profile-file=%t.profdata -S 2>&1 | FileCheck %s --check-prefix=DISABLED
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; WARNING-DAG: warning: <unknown>:0:0: 0.00%
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; 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.
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; REMARK-NOT: warning: <unknown>:0:0: 0.00%
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; 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.
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; BOTH-DAG: warning: <unknown>:0:0: 0.00%
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; 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.
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; DISABLED-NOT: warning: <unknown>:0:0: 0.00%
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; 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.
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; DISABLED-NOT: warning: <unknown>:0:0: 0.00%
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; 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.
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; CORRECT-NOT: warning: {{.*}}
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; CORRECT-NOT: remark: {{.*}}
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; CHECK-DAG: !{!"misexpect", i64 0, i64 2000, i64 1}
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; ModuleID = 'misexpect-switch.c'
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source_filename = "misexpect-switch.c"
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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@inner_loop = dso_local constant i32 1000, align 4
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@outer_loop = dso_local constant i32 20, align 4
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@arry_size = dso_local constant i32 25, align 4
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@arry = dso_local global [25 x i32] zeroinitializer, align 16
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; Function Attrs: nounwind uwtable
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define dso_local void @init_arry() #0 {
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entry:
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%i = alloca i32, align 4
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%0 = bitcast i32* %i to i8*
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call void @llvm.lifetime.start.p0i8(i64 4, i8* %0) #6
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store i32 0, i32* %i, align 4, !tbaa !4
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br label %for.cond
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for.cond: ; preds = %for.inc, %entry
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%1 = load i32, i32* %i, align 4, !tbaa !4
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%cmp = icmp slt i32 %1, 25
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br i1 %cmp, label %for.body, label %for.end
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for.body: ; preds = %for.cond
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%call = call i32 @rand() #6
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%rem = srem i32 %call, 10
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%2 = load i32, i32* %i, align 4, !tbaa !4
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%idxprom = sext i32 %2 to i64
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%arrayidx = getelementptr inbounds [25 x i32], [25 x i32]* @arry, i64 0, i64 %idxprom
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store i32 %rem, i32* %arrayidx, align 4, !tbaa !4
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br label %for.inc
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for.inc: ; preds = %for.body
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%3 = load i32, i32* %i, align 4, !tbaa !4
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%inc = add nsw i32 %3, 1
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store i32 %inc, i32* %i, align 4, !tbaa !4
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br label %for.cond
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for.end: ; preds = %for.cond
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%4 = bitcast i32* %i to i8*
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call void @llvm.lifetime.end.p0i8(i64 4, i8* %4) #6
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ret void
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}
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; Function Attrs: argmemonly nounwind willreturn
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declare void @llvm.lifetime.start.p0i8(i64 immarg, i8* nocapture) #1
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; Function Attrs: nounwind readnone speculatable willreturn
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #2
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; Function Attrs: nounwind
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declare dso_local i32 @rand() #3
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; Function Attrs: argmemonly nounwind willreturn
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declare void @llvm.lifetime.end.p0i8(i64 immarg, i8* nocapture) #1
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; Function Attrs: nounwind uwtable
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define dso_local i32 @main() #0 {
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entry:
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%retval = alloca i32, align 4
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%val = alloca i32, align 4
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%j = alloca i32, align 4
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%condition = alloca i32, align 4
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store i32 0, i32* %retval, align 4
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call void @init_arry()
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%0 = bitcast i32* %val to i8*
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call void @llvm.lifetime.start.p0i8(i64 4, i8* %0) #6
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store i32 0, i32* %val, align 4, !tbaa !4
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%1 = bitcast i32* %j to i8*
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call void @llvm.lifetime.start.p0i8(i64 4, i8* %1) #6
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store i32 0, i32* %j, align 4, !tbaa !4
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br label %for.cond
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for.cond: ; preds = %for.inc, %entry
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%2 = load i32, i32* %j, align 4, !tbaa !4
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%cmp = icmp slt i32 %2, 20000
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br i1 %cmp, label %for.body, label %for.end
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for.body: ; preds = %for.cond
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%3 = bitcast i32* %condition to i8*
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call void @llvm.lifetime.start.p0i8(i64 4, i8* %3) #6
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%call = call i32 @rand() #6
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%rem = srem i32 %call, 5
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store i32 %rem, i32* %condition, align 4, !tbaa !4
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%4 = load i32, i32* %condition, align 4, !tbaa !4
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%conv = zext i32 %4 to i64
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%expval = call i64 @llvm.expect.i64(i64 %conv, i64 6)
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switch i64 %expval, label %sw.default [
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i64 0, label %sw.bb
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i64 1, label %sw.bb2
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i64 2, label %sw.bb2
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i64 3, label %sw.bb2
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i64 4, label %sw.bb3
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]
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sw.bb: ; preds = %for.body
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%call1 = call i32 @sum(i32* getelementptr inbounds ([25 x i32], [25 x i32]* @arry, i64 0, i64 0), i32 25)
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%5 = load i32, i32* %val, align 4, !tbaa !4
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%add = add nsw i32 %5, %call1
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store i32 %add, i32* %val, align 4, !tbaa !4
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br label %sw.epilog
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sw.bb2: ; preds = %for.body, %for.body, %for.body
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br label %sw.epilog
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sw.bb3: ; preds = %for.body
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%call4 = call i32 @random_sample(i32* getelementptr inbounds ([25 x i32], [25 x i32]* @arry, i64 0, i64 0), i32 25)
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%6 = load i32, i32* %val, align 4, !tbaa !4
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%add5 = add nsw i32 %6, %call4
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store i32 %add5, i32* %val, align 4, !tbaa !4
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br label %sw.epilog
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sw.default: ; preds = %for.body
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unreachable
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sw.epilog: ; preds = %sw.bb3, %sw.bb2, %sw.bb
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%7 = bitcast i32* %condition to i8*
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call void @llvm.lifetime.end.p0i8(i64 4, i8* %7) #6
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br label %for.inc
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for.inc: ; preds = %sw.epilog
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%8 = load i32, i32* %j, align 4, !tbaa !4
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%inc = add nsw i32 %8, 1
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store i32 %inc, i32* %j, align 4, !tbaa !4
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br label %for.cond
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for.end: ; preds = %for.cond
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%9 = bitcast i32* %j to i8*
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call void @llvm.lifetime.end.p0i8(i64 4, i8* %9) #6
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%10 = bitcast i32* %val to i8*
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call void @llvm.lifetime.end.p0i8(i64 4, i8* %10) #6
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ret i32 0
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}
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; Function Attrs: nounwind readnone willreturn
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declare i64 @llvm.expect.i64(i64, i64) #4
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declare dso_local i32 @sum(i32*, i32) #5
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declare dso_local i32 @random_sample(i32*, i32) #5
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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" }
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attributes #1 = { argmemonly nounwind willreturn }
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attributes #2 = { nounwind readnone speculatable willreturn }
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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" }
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attributes #4 = { nounwind readnone willreturn }
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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" }
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attributes #6 = { nounwind }
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!llvm.module.flags = !{!0, !1, !2}
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!llvm.ident = !{!3}
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!0 = !{i32 2, !"Dwarf Version", i32 4}
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!1 = !{i32 2, !"Debug Info Version", i32 3}
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!2 = !{i32 1, !"wchar_size", i32 4}
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!3 = !{!"clang version 10.0.0 (60b79b85b1763d3d25630261e5cd1adb7f0835bc)"}
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!4 = !{!5, !5, i64 0}
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!5 = !{!"int", !6, i64 0}
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!6 = !{!"omnipotent char", !7, i64 0}
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!7 = !{!"Simple C/C++ TBAA"}
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