maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity
llvm-project/llvm/test/Analysis/ScalarEvolution/flags-from-poison-dbg.ll

Ignoring revisions in .git-blame-ignore-revs. Click here to bypass and see the normal blame view.

77 lines
3.5 KiB
LLVM
Raw Normal View History

[SCEV] Fix ScalarEvolution tests under NPM Many tests use opt's -analyze feature, which does not translate well to NPM and has better alternatives. The alternative here is to explicitly add a pass that calls ScalarEvolution::print(). The legacy pass manager RUNs aren't changing, but they are now pinned to the legacy pass manager. For each legacy pass manager RUN, I added a corresponding NPM RUN using the 'print<scalar-evolution>' pass. For compatibility with update_analyze_test_checks.py and existing test CHECKs, 'print<scalar-evolution>' now prints what -analyze prints per function. This was generated by the following Python script and failures were manually fixed up: import sys for i in sys.argv: with open(i, 'r') as f: s = f.read() with open(i, 'w') as f: for l in s.splitlines(): if "RUN:" in l and ' -analyze ' in l and '\\' not in l: f.write(l.replace(' -analyze ', ' -analyze -enable-new-pm=0 ')) f.write('\n') f.write(l.replace(' -analyze ', ' -disable-output ').replace(' -scalar-evolution ', ' "-passes=print<scalar-evolution>" ').replace(" | ", " 2>&1 | ")) f.write('\n') else: f.write(l) There are a couple failures still in ScalarEvolution under NPM, but those are due to other unrelated naming conflicts. Reviewed By: asbirlea Differential Revision: https://reviews.llvm.org/D83798
2020-07-17 02:09:47 +08:00
; RUN: opt -analyze -enable-new-pm=0 -scalar-evolution < %s | FileCheck %s
; RUN: opt -disable-output "-passes=print<scalar-evolution>" < %s 2>&1 | FileCheck %s
Teach isGuarantdToTransferExecToSuccessor about debug info intrinsics Calls to `@llvm.dbg.*` can be assumed to terminate. llvm-svn: 272180
2016-06-09 01:48:36 +08:00
; Make sure poison value tracking works in the presence of @llvm.dbg
; intrinsics. Unfortunately, I was not able to reduce this file
; further while still keeping the debug info well formed.
define void @foo(i32 %n, i32* %arr) !dbg !7 {
; CHECK-LABEL: Classifying expressions for: @foo
entry:
%cmp1 = icmp slt i32 0, %n, !dbg !12
br i1 %cmp1, label %for.body.lr.ph, label %for.end, !dbg !15
for.body.lr.ph: ; preds = %entry
br label %for.body, !dbg !15
for.body: ; preds = %for.inc, %for.body.lr.ph
%i.02 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %for.inc ]
%add = add nsw i32 %i.02, 50, !dbg !16
call void @llvm.dbg.value(metadata i32 %add, i64 0, metadata !18, metadata !19), !dbg !20
%idxprom = sext i32 %add to i64, !dbg !21
; CHECK: %idxprom = sext i32 %add to i64
; CHECK-NEXT: --> {50,+,1}<nuw><nsw><%for.body>
%arrayidx = getelementptr inbounds i32, i32* %arr, i64 %idxprom, !dbg !21
store i32 100, i32* %arrayidx, align 4, !dbg !22
br label %for.inc, !dbg !23
for.inc: ; preds = %for.body
%inc = add nsw i32 %i.02, 1, !dbg !24
%cmp = icmp slt i32 %inc, %n, !dbg !12
br i1 %cmp, label %for.body, label %for.cond.for.end_crit_edge, !dbg !15, !llvm.loop !25
for.cond.for.end_crit_edge: ; preds = %for.inc
br label %for.end, !dbg !15
for.end: ; preds = %for.cond.for.end_crit_edge, %entry
ret void, !dbg !27
}
; Function Attrs: nounwind readnone
declare void @llvm.dbg.value(metadata, i64, metadata, metadata)
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!3, !4, !5}
!llvm.ident = !{!6}
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.9.0 (llvm/trunk 271857)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
!1 = !DIFile(filename: "x.c", directory: "/Users/sanjoy/Code/clang/build/debug+asserts-x86")
!2 = !{}
!3 = !{i32 2, !"Dwarf Version", i32 2}
!4 = !{i32 2, !"Debug Info Version", i32 3}
!5 = !{i32 1, !"PIC Level", i32 2}
!6 = !{!"clang version 3.9.0 (llvm/trunk 271857)"}
[DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. In order to set breakpoints on labels and list source code around labels, we need collect debug information for labels, i.e., label name, the function label belong, line number in the file, and the address label located. In order to keep these information in LLVM IR and to allow backend to generate debug information correctly. We create a new kind of metadata for labels, DILabel. The format of DILabel is !DILabel(scope: !1, name: "foo", file: !2, line: 3) We hope to keep debug information as much as possible even the code is optimized. So, we create a new kind of intrinsic for label metadata to avoid the metadata is eliminated with basic block. The intrinsic will keep existing if we keep it from optimized out. The format of the intrinsic is llvm.dbg.label(metadata !1) It has only one argument, that is the DILabel metadata. The intrinsic will follow the label immediately. Backend could get the label metadata through the intrinsic's parameter. We also create DIBuilder API for labels to be used by Frontend. Frontend could use createLabel() to allocate DILabel objects, and use insertLabel() to insert llvm.dbg.label intrinsic in LLVM IR. Differential Revision: https://reviews.llvm.org/D45024 Patch by Hsiangkai Wang. llvm-svn: 331841
2018-05-09 10:40:45 +08:00
!7 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, type: !8, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
Teach isGuarantdToTransferExecToSuccessor about debug info intrinsics Calls to `@llvm.dbg.*` can be assumed to terminate. llvm-svn: 272180
2016-06-09 01:48:36 +08:00
!8 = !DISubroutineType(types: !9)
!9 = !{null, !10, !11}
!10 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!11 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !10, size: 64, align: 64)
!12 = !DILocation(line: 2, column: 24, scope: !13)
!13 = distinct !DILexicalBlock(scope: !14, file: !1, line: 2, column: 6)
!14 = distinct !DILexicalBlock(scope: !7, file: !1, line: 2, column: 6)
!15 = !DILocation(line: 2, column: 6, scope: !14)
!16 = !DILocation(line: 3, column: 14, scope: !17)
!17 = distinct !DILexicalBlock(scope: !13, file: !1, line: 2, column: 34)
!18 = !DILocalVariable(name: "k", scope: !17, file: !1, line: 3, type: !10)
!19 = !DIExpression()
!20 = !DILocation(line: 3, column: 8, scope: !17)
!21 = !DILocation(line: 4, column: 4, scope: !17)
!22 = !DILocation(line: 4, column: 11, scope: !17)
!23 = !DILocation(line: 5, column: 6, scope: !17)
!24 = !DILocation(line: 2, column: 30, scope: !13)
!25 = distinct !{!25, !26}
!26 = !DILocation(line: 2, column: 6, scope: !7)
!27 = !DILocation(line: 6, column: 1, scope: !7)