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llvm-mirror/test/Transforms/PGOProfile/misexpect-switch.ll

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Reland "clang-misexpect: Profile Guided Validation of Performance Annotations in LLVM" This patch contains the basic functionality for reporting potentially incorrect usage of __builtin_expect() by comparing the developer's annotation against a collected PGO profile. A more detailed proposal and discussion appears on the CFE-dev mailing list (http://lists.llvm.org/pipermail/cfe-dev/2019-July/062971.html) and a prototype of the initial frontend changes appear here in D65300 We revised the work in D65300 by moving the misexpect check into the LLVM backend, and adding support for IR and sampling based profiles, in addition to frontend instrumentation. We add new misexpect metadata tags to those instructions directly influenced by the llvm.expect intrinsic (branch, switch, and select) when lowering the intrinsics. The misexpect metadata contains information about the expected target of the intrinsic so that we can check against the correct PGO counter when emitting diagnostics, and the compiler's values for the LikelyBranchWeight and UnlikelyBranchWeight. We use these branch weight values to determine when to emit the diagnostic to the user. A future patch should address the comment at the top of LowerExpectIntrisic.cpp to hoist the LikelyBranchWeight and UnlikelyBranchWeight values into a shared space that can be accessed outside of the LowerExpectIntrinsic pass. Once that is done, the misexpect metadata can be updated to be smaller. In the long term, it is possible to reconstruct portions of the misexpect metadata from the existing profile data. However, we have avoided this to keep the code simple, and because some kind of metadata tag will be required to identify which branch/switch/select instructions are influenced by the use of llvm.expect Patch By: paulkirth Differential Revision: https://reviews.llvm.org/D66324 llvm-svn: 371635
2019-09-11 16:19:50 +00:00
; RUN: llvm-profdata merge %S/Inputs/misexpect-switch.proftext -o %t.profdata
; RUN: llvm-profdata merge %S/Inputs/misexpect-switch-correct.proftext -o %t.c.profdata
[PGO] Supporting code for always instrumenting entry block This patch includes the supporting code that enables always instrumenting the function entry block by default. This patch will NOT the default behavior. It adds a variant bit in the profile version, adds new directives in text profile format, and changes llvm-profdata tool accordingly. This patch is a split of D83024 (https://reviews.llvm.org/D83024) Many test changes from D83024 are also included. Differential Revision: https://reviews.llvm.org/D84261
2020-07-22 14:58:42 -07:00
; RUN: opt < %s -lower-expect -pgo-instr-use -pgo-instrument-entry=false -pgo-test-profile-file=%t.profdata -S -pgo-warn-misexpect 2>&1 | FileCheck %s --check-prefix=WARNING
; RUN: opt < %s -lower-expect -pgo-instr-use -pgo-instrument-entry=false -pgo-test-profile-file=%t.profdata -S -pass-remarks=misexpect 2>&1 | FileCheck %s --check-prefix=REMARK
; RUN: opt < %s -lower-expect -pgo-instr-use -pgo-instrument-entry=false -pgo-test-profile-file=%t.profdata -S -pgo-warn-misexpect -pass-remarks=misexpect 2>&1 | FileCheck %s --check-prefix=BOTH
; RUN: opt < %s -lower-expect -pgo-instr-use -pgo-instrument-entry=false -pgo-test-profile-file=%t.profdata -S 2>&1 | FileCheck %s --check-prefix=DISABLED
Reland "clang-misexpect: Profile Guided Validation of Performance Annotations in LLVM" This patch contains the basic functionality for reporting potentially incorrect usage of __builtin_expect() by comparing the developer's annotation against a collected PGO profile. A more detailed proposal and discussion appears on the CFE-dev mailing list (http://lists.llvm.org/pipermail/cfe-dev/2019-July/062971.html) and a prototype of the initial frontend changes appear here in D65300 We revised the work in D65300 by moving the misexpect check into the LLVM backend, and adding support for IR and sampling based profiles, in addition to frontend instrumentation. We add new misexpect metadata tags to those instructions directly influenced by the llvm.expect intrinsic (branch, switch, and select) when lowering the intrinsics. The misexpect metadata contains information about the expected target of the intrinsic so that we can check against the correct PGO counter when emitting diagnostics, and the compiler's values for the LikelyBranchWeight and UnlikelyBranchWeight. We use these branch weight values to determine when to emit the diagnostic to the user. A future patch should address the comment at the top of LowerExpectIntrisic.cpp to hoist the LikelyBranchWeight and UnlikelyBranchWeight values into a shared space that can be accessed outside of the LowerExpectIntrinsic pass. Once that is done, the misexpect metadata can be updated to be smaller. In the long term, it is possible to reconstruct portions of the misexpect metadata from the existing profile data. However, we have avoided this to keep the code simple, and because some kind of metadata tag will be required to identify which branch/switch/select instructions are influenced by the use of llvm.expect Patch By: paulkirth Differential Revision: https://reviews.llvm.org/D66324 llvm-svn: 371635
2019-09-11 16:19:50 +00:00
; New PM
[PGO] Supporting code for always instrumenting entry block This patch includes the supporting code that enables always instrumenting the function entry block by default. This patch will NOT the default behavior. It adds a variant bit in the profile version, adds new directives in text profile format, and changes llvm-profdata tool accordingly. This patch is a split of D83024 (https://reviews.llvm.org/D83024) Many test changes from D83024 are also included. Differential Revision: https://reviews.llvm.org/D84261
2020-07-22 14:58:42 -07:00
; RUN: opt < %s -passes="function(lower-expect),pgo-instr-use" -pgo-instrument-entry=false -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-instrument-entry=false -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-instrument-entry=false -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-instrument-entry=false -pgo-test-profile-file=%t.profdata -S 2>&1 | FileCheck %s --check-prefix=DISABLED
; RUN: opt < %s -lower-expect -pgo-instr-use -pgo-instrument-entry=false -pgo-test-profile-file=%t.c.profdata -S -pgo-warn-misexpect -pass-remarks=misexpect 2>&1 | FileCheck %s --check-prefix=CORRECT
; RUN: opt < %s -passes="function(lower-expect),pgo-instr-use" -pgo-instrument-entry=false -pgo-test-profile-file=%t.c.profdata -pgo-warn-misexpect -pass-remarks=misexpect -S 2>&1 | FileCheck %s --check-prefix=CORRECT
Reland "clang-misexpect: Profile Guided Validation of Performance Annotations in LLVM" This patch contains the basic functionality for reporting potentially incorrect usage of __builtin_expect() by comparing the developer's annotation against a collected PGO profile. A more detailed proposal and discussion appears on the CFE-dev mailing list (http://lists.llvm.org/pipermail/cfe-dev/2019-July/062971.html) and a prototype of the initial frontend changes appear here in D65300 We revised the work in D65300 by moving the misexpect check into the LLVM backend, and adding support for IR and sampling based profiles, in addition to frontend instrumentation. We add new misexpect metadata tags to those instructions directly influenced by the llvm.expect intrinsic (branch, switch, and select) when lowering the intrinsics. The misexpect metadata contains information about the expected target of the intrinsic so that we can check against the correct PGO counter when emitting diagnostics, and the compiler's values for the LikelyBranchWeight and UnlikelyBranchWeight. We use these branch weight values to determine when to emit the diagnostic to the user. A future patch should address the comment at the top of LowerExpectIntrisic.cpp to hoist the LikelyBranchWeight and UnlikelyBranchWeight values into a shared space that can be accessed outside of the LowerExpectIntrinsic pass. Once that is done, the misexpect metadata can be updated to be smaller. In the long term, it is possible to reconstruct portions of the misexpect metadata from the existing profile data. However, we have avoided this to keep the code simple, and because some kind of metadata tag will be required to identify which branch/switch/select instructions are influenced by the use of llvm.expect Patch By: paulkirth Differential Revision: https://reviews.llvm.org/D66324 llvm-svn: 371635
2019-09-11 16:19:50 +00:00
[PGO] Supporting code for always instrumenting entry block This patch includes the supporting code that enables always instrumenting the function entry block by default. This patch will NOT the default behavior. It adds a variant bit in the profile version, adds new directives in text profile format, and changes llvm-profdata tool accordingly. This patch is a split of D83024 (https://reviews.llvm.org/D83024) Many test changes from D83024 are also included. Differential Revision: https://reviews.llvm.org/D84261
2020-07-22 14:58:42 -07:00
; RUN: llvm-profdata merge %S/Inputs/misexpect-switch_entry.proftext -o %t2.profdata
; RUN: llvm-profdata merge %S/Inputs/misexpect-switch-correct_entry.proftext -o %t2.c.profdata
Reland "clang-misexpect: Profile Guided Validation of Performance Annotations in LLVM" This patch contains the basic functionality for reporting potentially incorrect usage of __builtin_expect() by comparing the developer's annotation against a collected PGO profile. A more detailed proposal and discussion appears on the CFE-dev mailing list (http://lists.llvm.org/pipermail/cfe-dev/2019-July/062971.html) and a prototype of the initial frontend changes appear here in D65300 We revised the work in D65300 by moving the misexpect check into the LLVM backend, and adding support for IR and sampling based profiles, in addition to frontend instrumentation. We add new misexpect metadata tags to those instructions directly influenced by the llvm.expect intrinsic (branch, switch, and select) when lowering the intrinsics. The misexpect metadata contains information about the expected target of the intrinsic so that we can check against the correct PGO counter when emitting diagnostics, and the compiler's values for the LikelyBranchWeight and UnlikelyBranchWeight. We use these branch weight values to determine when to emit the diagnostic to the user. A future patch should address the comment at the top of LowerExpectIntrisic.cpp to hoist the LikelyBranchWeight and UnlikelyBranchWeight values into a shared space that can be accessed outside of the LowerExpectIntrinsic pass. Once that is done, the misexpect metadata can be updated to be smaller. In the long term, it is possible to reconstruct portions of the misexpect metadata from the existing profile data. However, we have avoided this to keep the code simple, and because some kind of metadata tag will be required to identify which branch/switch/select instructions are influenced by the use of llvm.expect Patch By: paulkirth Differential Revision: https://reviews.llvm.org/D66324 llvm-svn: 371635
2019-09-11 16:19:50 +00:00
[PGO] Supporting code for always instrumenting entry block This patch includes the supporting code that enables always instrumenting the function entry block by default. This patch will NOT the default behavior. It adds a variant bit in the profile version, adds new directives in text profile format, and changes llvm-profdata tool accordingly. This patch is a split of D83024 (https://reviews.llvm.org/D83024) Many test changes from D83024 are also included. Differential Revision: https://reviews.llvm.org/D84261
2020-07-22 14:58:42 -07:00
; RUN: opt < %s -lower-expect -pgo-instr-use -pgo-instrument-entry=true -pgo-test-profile-file=%t2.profdata -S -pgo-warn-misexpect 2>&1 | FileCheck %s --check-prefix=WARNING
; RUN: opt < %s -lower-expect -pgo-instr-use -pgo-instrument-entry=true -pgo-test-profile-file=%t2.profdata -S -pass-remarks=misexpect 2>&1 | FileCheck %s --check-prefix=REMARK
; RUN: opt < %s -lower-expect -pgo-instr-use -pgo-instrument-entry=true -pgo-test-profile-file=%t2.profdata -S -pgo-warn-misexpect -pass-remarks=misexpect 2>&1 | FileCheck %s --check-prefix=BOTH
; RUN: opt < %s -lower-expect -pgo-instr-use -pgo-instrument-entry=true -pgo-test-profile-file=%t2.profdata -S 2>&1 | FileCheck %s --check-prefix=DISABLED
; New PM
; RUN: opt < %s -passes="function(lower-expect),pgo-instr-use" -pgo-instrument-entry=true -pgo-test-profile-file=%t2.profdata -pgo-warn-misexpect -S 2>&1 | FileCheck %s --check-prefix=WARNING
; RUN: opt < %s -passes="function(lower-expect),pgo-instr-use" -pgo-instrument-entry=true -pgo-test-profile-file=%t2.profdata -pass-remarks=misexpect -S 2>&1 | FileCheck %s --check-prefix=REMARK
; RUN: opt < %s -passes="function(lower-expect),pgo-instr-use" -pgo-instrument-entry=true -pgo-test-profile-file=%t2.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-instrument-entry=true -pgo-test-profile-file=%t2.profdata -S 2>&1 | FileCheck %s --check-prefix=DISABLED
; RUN: opt < %s -lower-expect -pgo-instr-use -pgo-instrument-entry=true -pgo-test-profile-file=%t2.c.profdata -S -pgo-warn-misexpect -pass-remarks=misexpect 2>&1 | FileCheck %s --check-prefix=CORRECT
; RUN: opt < %s -passes="function(lower-expect),pgo-instr-use" -pgo-instrument-entry=true -pgo-test-profile-file=%t2.c.profdata -pgo-warn-misexpect -pass-remarks=misexpect -S 2>&1 | FileCheck %s --check-prefix=CORRECT
Reland "clang-misexpect: Profile Guided Validation of Performance Annotations in LLVM" This patch contains the basic functionality for reporting potentially incorrect usage of __builtin_expect() by comparing the developer's annotation against a collected PGO profile. A more detailed proposal and discussion appears on the CFE-dev mailing list (http://lists.llvm.org/pipermail/cfe-dev/2019-July/062971.html) and a prototype of the initial frontend changes appear here in D65300 We revised the work in D65300 by moving the misexpect check into the LLVM backend, and adding support for IR and sampling based profiles, in addition to frontend instrumentation. We add new misexpect metadata tags to those instructions directly influenced by the llvm.expect intrinsic (branch, switch, and select) when lowering the intrinsics. The misexpect metadata contains information about the expected target of the intrinsic so that we can check against the correct PGO counter when emitting diagnostics, and the compiler's values for the LikelyBranchWeight and UnlikelyBranchWeight. We use these branch weight values to determine when to emit the diagnostic to the user. A future patch should address the comment at the top of LowerExpectIntrisic.cpp to hoist the LikelyBranchWeight and UnlikelyBranchWeight values into a shared space that can be accessed outside of the LowerExpectIntrinsic pass. Once that is done, the misexpect metadata can be updated to be smaller. In the long term, it is possible to reconstruct portions of the misexpect metadata from the existing profile data. However, we have avoided this to keep the code simple, and because some kind of metadata tag will be required to identify which branch/switch/select instructions are influenced by the use of llvm.expect Patch By: paulkirth Differential Revision: https://reviews.llvm.org/D66324 llvm-svn: 371635
2019-09-11 16:19:50 +00:00
; WARNING-DAG: warning: misexpect-switch.c:26:5: 0.00%
; WARNING-NOT: remark: misexpect-switch.c:26:5: Potential performance regression from use of the llvm.expect intrinsic: Annotation was correct on 0.00% (0 / 8112) of profiled executions.
; REMARK-NOT: warning: misexpect-switch.c:26:5: 0.00%
; REMARK-DAG: remark: misexpect-switch.c:26:5: Potential performance regression from use of the llvm.expect intrinsic: Annotation was correct on 0.00% (0 / 8112) of profiled executions.
; BOTH-DAG: warning: misexpect-switch.c:26:5: 0.00%
; BOTH-DAG: remark: misexpect-switch.c:26:5: Potential performance regression from use of the llvm.expect intrinsic: Annotation was correct on 0.00% (0 / 8112) of profiled executions.
; DISABLED-NOT: warning: misexpect-switch.c:26:5: 0.00%
; DISABLED-NOT: remark: misexpect-switch.c:26:5: Potential performance regression from use of the llvm.expect intrinsic: Annotation was correct on 0.00% (0 / 8112) of profiled executions.
; DISABLED-NOT: warning: misexpect-switch.c:26:5: 0.00%
; DISABLED-NOT: remark: misexpect-switch.c:26:5: Potential performance regression from use of the llvm.expect intrinsic: Annotation was correct on 0.00% (0 / 8112) of profiled executions.
; CORRECT-NOT: warning: {{.*}}
; CORRECT-NOT: remark: {{.*}}
; CHECK-DAG: !{!"misexpect", i64 0, i64 2000, i64 1}
; 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, !dbg !0
@outer_loop = dso_local constant i32 20, align 4, !dbg !6
@arry_size = dso_local constant i32 25, align 4, !dbg !10
@arry = dso_local global [25 x i32] zeroinitializer, align 16, !dbg !12
; Function Attrs: nounwind uwtable
define dso_local void @init_arry() #0 !dbg !21 {
entry:
%i = alloca i32, align 4
%0 = bitcast i32* %i to i8*, !dbg !26
call void @llvm.lifetime.start.p0i8(i64 4, i8* %0) #6, !dbg !26
call void @llvm.dbg.declare(metadata i32* %i, metadata !25, metadata !DIExpression()), !dbg !27
store i32 0, i32* %i, align 4, !dbg !28, !tbaa !30
br label %for.cond, !dbg !34
for.cond: ; preds = %for.inc, %entry
%1 = load i32, i32* %i, align 4, !dbg !35, !tbaa !30
%cmp = icmp slt i32 %1, 25, !dbg !37
br i1 %cmp, label %for.body, label %for.end, !dbg !38
for.body: ; preds = %for.cond
%call = call i32 @rand() #6, !dbg !39
%rem = srem i32 %call, 10, !dbg !41
%2 = load i32, i32* %i, align 4, !dbg !42, !tbaa !30
%idxprom = sext i32 %2 to i64, !dbg !43
%arrayidx = getelementptr inbounds [25 x i32], [25 x i32]* @arry, i64 0, i64 %idxprom, !dbg !43
store i32 %rem, i32* %arrayidx, align 4, !dbg !44, !tbaa !30
br label %for.inc, !dbg !45
for.inc: ; preds = %for.body
%3 = load i32, i32* %i, align 4, !dbg !46, !tbaa !30
%inc = add nsw i32 %3, 1, !dbg !46
store i32 %inc, i32* %i, align 4, !dbg !46, !tbaa !30
br label %for.cond, !dbg !47, !llvm.loop !48
for.end: ; preds = %for.cond
%4 = bitcast i32* %i to i8*, !dbg !50
call void @llvm.lifetime.end.p0i8(i64 4, i8* %4) #6, !dbg !50
ret void, !dbg !50
}
; Function Attrs: argmemonly nounwind willreturn
declare void @llvm.lifetime.start.p0i8(i64 immarg, i8* 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.p0i8(i64 immarg, i8* nocapture) #1
; Function Attrs: nounwind uwtable
define dso_local i32 @main() #0 !dbg !51 {
entry:
%retval = alloca i32, align 4
%val = alloca i32, align 4
%j = alloca i32, align 4
%condition = alloca i32, align 4
store i32 0, i32* %retval, align 4
call void @init_arry(), !dbg !62
%0 = bitcast i32* %val to i8*, !dbg !63
call void @llvm.lifetime.start.p0i8(i64 4, i8* %0) #6, !dbg !63
call void @llvm.dbg.declare(metadata i32* %val, metadata !55, metadata !DIExpression()), !dbg !64
store i32 0, i32* %val, align 4, !dbg !64, !tbaa !30
%1 = bitcast i32* %j to i8*, !dbg !65
call void @llvm.lifetime.start.p0i8(i64 4, i8* %1) #6, !dbg !65
call void @llvm.dbg.declare(metadata i32* %j, metadata !56, metadata !DIExpression()), !dbg !66
store i32 0, i32* %j, align 4, !dbg !67, !tbaa !30
br label %for.cond, !dbg !68
for.cond: ; preds = %for.inc, %entry
%2 = load i32, i32* %j, align 4, !dbg !69, !tbaa !30
%cmp = icmp slt i32 %2, 20000, !dbg !70
br i1 %cmp, label %for.body, label %for.end, !dbg !71
for.body: ; preds = %for.cond
%3 = bitcast i32* %condition to i8*, !dbg !72
call void @llvm.lifetime.start.p0i8(i64 4, i8* %3) #6, !dbg !72
call void @llvm.dbg.declare(metadata i32* %condition, metadata !57, metadata !DIExpression()), !dbg !73
%call = call i32 @rand() #6, !dbg !74
%rem = srem i32 %call, 5, !dbg !75
store i32 %rem, i32* %condition, align 4, !dbg !73, !tbaa !30
%4 = load i32, i32* %condition, align 4, !dbg !76, !tbaa !30
%conv = zext i32 %4 to i64, !dbg !76
%expval = call i64 @llvm.expect.i64(i64 %conv, i64 0), !dbg !77
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
], !dbg !78
sw.bb: ; preds = %for.body
%call1 = call i32 @sum(i32* getelementptr inbounds ([25 x i32], [25 x i32]* @arry, i64 0, i64 0), i32 25), !dbg !79
%5 = load i32, i32* %val, align 4, !dbg !81, !tbaa !30
%add = add nsw i32 %5, %call1, !dbg !81
store i32 %add, i32* %val, align 4, !dbg !81, !tbaa !30
br label %sw.epilog, !dbg !82
sw.bb2: ; preds = %for.body, %for.body, %for.body
br label %sw.epilog, !dbg !83
sw.bb3: ; preds = %for.body
%call4 = call i32 @random_sample(i32* getelementptr inbounds ([25 x i32], [25 x i32]* @arry, i64 0, i64 0), i32 25), !dbg !84
%6 = load i32, i32* %val, align 4, !dbg !85, !tbaa !30
%add5 = add nsw i32 %6, %call4, !dbg !85
store i32 %add5, i32* %val, align 4, !dbg !85, !tbaa !30
br label %sw.epilog, !dbg !86
sw.default: ; preds = %for.body
unreachable, !dbg !87
sw.epilog: ; preds = %sw.bb3, %sw.bb2, %sw.bb
%7 = bitcast i32* %condition to i8*, !dbg !88
call void @llvm.lifetime.end.p0i8(i64 4, i8* %7) #6, !dbg !88
br label %for.inc, !dbg !89
for.inc: ; preds = %sw.epilog
%8 = load i32, i32* %j, align 4, !dbg !90, !tbaa !30
%inc = add nsw i32 %8, 1, !dbg !90
store i32 %inc, i32* %j, align 4, !dbg !90, !tbaa !30
br label %for.cond, !dbg !91, !llvm.loop !92
for.end: ; preds = %for.cond
%9 = bitcast i32* %j to i8*, !dbg !94
call void @llvm.lifetime.end.p0i8(i64 4, i8* %9) #6, !dbg !94
%10 = bitcast i32* %val to i8*, !dbg !94
call void @llvm.lifetime.end.p0i8(i64 4, i8* %10) #6, !dbg !94
ret i32 0, !dbg !95
}
; Function Attrs: nounwind readnone willreturn
declare i64 @llvm.expect.i64(i64, i64) #4
declare dso_local i32 @sum(i32*, i32) #5
declare dso_local i32 @random_sample(i32*, 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.dbg.cu = !{!2}
!llvm.module.flags = !{!17, !18, !19}
!llvm.ident = !{!20}
!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
!1 = distinct !DIGlobalVariable(name: "inner_loop", scope: !2, file: !3, line: 7, type: !8, isLocal: false, isDefinition: true)
!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 10.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)
!3 = !DIFile(filename: "misexpect-switch.c", directory: ".")
!4 = !{}
!5 = !{!0, !6, !10, !12}
!6 = !DIGlobalVariableExpression(var: !7, expr: !DIExpression())
!7 = distinct !DIGlobalVariable(name: "outer_loop", scope: !2, file: !3, line: 8, type: !8, isLocal: false, isDefinition: true)
!8 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !9)
!9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!10 = !DIGlobalVariableExpression(var: !11, expr: !DIExpression())
!11 = distinct !DIGlobalVariable(name: "arry_size", scope: !2, file: !3, line: 9, type: !8, isLocal: false, isDefinition: true)
!12 = !DIGlobalVariableExpression(var: !13, expr: !DIExpression())
!13 = distinct !DIGlobalVariable(name: "arry", scope: !2, file: !3, line: 11, type: !14, isLocal: false, isDefinition: true)
!14 = !DICompositeType(tag: DW_TAG_array_type, baseType: !9, size: 800, elements: !15)
!15 = !{!16}
!16 = !DISubrange(count: 25)
!17 = !{i32 2, !"Dwarf Version", i32 4}
!18 = !{i32 2, !"Debug Info Version", i32 3}
!19 = !{i32 1, !"wchar_size", i32 4}
!20 = !{!"clang version 10.0.0"}
!21 = distinct !DISubprogram(name: "init_arry", scope: !3, file: !3, line: 13, type: !22, scopeLine: 13, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !24)
!22 = !DISubroutineType(types: !23)
!23 = !{null}
!24 = !{!25}
!25 = !DILocalVariable(name: "i", scope: !21, file: !3, line: 14, type: !9)
!26 = !DILocation(line: 14, column: 3, scope: !21)
!27 = !DILocation(line: 14, column: 7, scope: !21)
!28 = !DILocation(line: 15, column: 10, scope: !29)
!29 = distinct !DILexicalBlock(scope: !21, file: !3, line: 15, column: 3)
!30 = !{!31, !31, i64 0}
!31 = !{!"int", !32, i64 0}
!32 = !{!"omnipotent char", !33, i64 0}
!33 = !{!"Simple C/C++ TBAA"}
!34 = !DILocation(line: 15, column: 8, scope: !29)
!35 = !DILocation(line: 15, column: 15, scope: !36)
!36 = distinct !DILexicalBlock(scope: !29, file: !3, line: 15, column: 3)
!37 = !DILocation(line: 15, column: 17, scope: !36)
!38 = !DILocation(line: 15, column: 3, scope: !29)
!39 = !DILocation(line: 16, column: 15, scope: !40)
!40 = distinct !DILexicalBlock(scope: !36, file: !3, line: 15, column: 35)
!41 = !DILocation(line: 16, column: 22, scope: !40)
!42 = !DILocation(line: 16, column: 10, scope: !40)
!43 = !DILocation(line: 16, column: 5, scope: !40)
!44 = !DILocation(line: 16, column: 13, scope: !40)
!45 = !DILocation(line: 17, column: 3, scope: !40)
!46 = !DILocation(line: 15, column: 30, scope: !36)
!47 = !DILocation(line: 15, column: 3, scope: !36)
!48 = distinct !{!48, !38, !49}
!49 = !DILocation(line: 17, column: 3, scope: !29)
!50 = !DILocation(line: 18, column: 1, scope: !21)
!51 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 20, type: !52, scopeLine: 20, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !54)
!52 = !DISubroutineType(types: !53)
!53 = !{!9}
!54 = !{!55, !56, !57}
!55 = !DILocalVariable(name: "val", scope: !51, file: !3, line: 22, type: !9)
!56 = !DILocalVariable(name: "j", scope: !51, file: !3, line: 23, type: !9)
!57 = !DILocalVariable(name: "condition", scope: !58, file: !3, line: 25, type: !61)
!58 = distinct !DILexicalBlock(scope: !59, file: !3, line: 24, column: 49)
!59 = distinct !DILexicalBlock(scope: !60, file: !3, line: 24, column: 3)
!60 = distinct !DILexicalBlock(scope: !51, file: !3, line: 24, column: 3)
!61 = !DIBasicType(name: "unsigned int", size: 32, encoding: DW_ATE_unsigned)
!62 = !DILocation(line: 21, column: 3, scope: !51)
!63 = !DILocation(line: 22, column: 3, scope: !51)
!64 = !DILocation(line: 22, column: 7, scope: !51)
!65 = !DILocation(line: 23, column: 3, scope: !51)
!66 = !DILocation(line: 23, column: 7, scope: !51)
!67 = !DILocation(line: 24, column: 10, scope: !60)
!68 = !DILocation(line: 24, column: 8, scope: !60)
!69 = !DILocation(line: 24, column: 15, scope: !59)
!70 = !DILocation(line: 24, column: 17, scope: !59)
!71 = !DILocation(line: 24, column: 3, scope: !60)
!72 = !DILocation(line: 25, column: 5, scope: !58)
!73 = !DILocation(line: 25, column: 14, scope: !58)
!74 = !DILocation(line: 25, column: 26, scope: !58)
!75 = !DILocation(line: 25, column: 33, scope: !58)
!76 = !DILocation(line: 26, column: 30, scope: !58)
!77 = !DILocation(line: 26, column: 13, scope: !58)
!78 = !DILocation(line: 26, column: 5, scope: !58)
!79 = !DILocation(line: 28, column: 14, scope: !80)
!80 = distinct !DILexicalBlock(scope: !58, file: !3, line: 26, column: 45)
!81 = !DILocation(line: 28, column: 11, scope: !80)
!82 = !DILocation(line: 29, column: 7, scope: !80)
!83 = !DILocation(line: 33, column: 7, scope: !80)
!84 = !DILocation(line: 35, column: 14, scope: !80)
!85 = !DILocation(line: 35, column: 11, scope: !80)
!86 = !DILocation(line: 36, column: 7, scope: !80)
!87 = !DILocation(line: 38, column: 7, scope: !80)
!88 = !DILocation(line: 40, column: 3, scope: !59)
!89 = !DILocation(line: 40, column: 3, scope: !58)
!90 = !DILocation(line: 24, column: 44, scope: !59)
!91 = !DILocation(line: 24, column: 3, scope: !59)
!92 = distinct !{!92, !71, !93}
!93 = !DILocation(line: 40, column: 3, scope: !60)
!94 = !DILocation(line: 43, column: 1, scope: !51)
!95 = !DILocation(line: 42, column: 3, scope: !51)
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