094572701d
This patch makes the final major change of the RemoveDIs project, changing the default IR output from debug intrinsics to debug records. This is expected to break a large number of tests: every single one that tests for uses or declarations of debug intrinsics and does not explicitly disable writing records. If this patch has broken your downstream tests (or upstream tests on a configuration I wasn't able to run): 1. If you need to immediately unblock a build, pass `--write-experimental-debuginfo=false` to LLVM's option processing for all failing tests (remember to use `-mllvm` for clang/flang to forward arguments to LLVM). 2. For most test failures, the changes are trivial and mechanical, enough that they can be done by script; see the migration guide for a guide on how to do this: https://llvm.org/docs/RemoveDIsDebugInfo.html#test-updates 3. If any tests fail for reasons other than FileCheck check lines that need updating, such as assertion failures, that is most likely a real bug with this patch and should be reported as such. For more information, see the recent PSA: https://discourse.llvm.org/t/psa-ir-output-changing-from-debug-intrinsics-to-debug-records/79578
115 lines
4.5 KiB
LLVM
115 lines
4.5 KiB
LLVM
; RUN: opt < %s -S -passes=mem2reg,instcombine | FileCheck %s
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; RUN: opt --try-experimental-debuginfo-iterators < %s -S -passes=mem2reg,instcombine | FileCheck %s
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; The '%bar' alloca will be promoted to an SSA register by mem2reg: test that
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; zero line number are assigned to the dbg.value intrinsics that are inserted
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; to represent changes in variable value. No machine instructions are
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; generated from these dbg.values so their lines are irrelevant, only the
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; scope and inlining information must be correct.
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; In the second function here, LowerDbgDeclare will promote various variable
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; accesses of a dbg.declare'd alloca into dbg.values. Check that their line
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; numbers are sane too. (IR copied from DebugInfo/X86/formal_parameter.ll).
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; CHECK-LABEL: define i32 @foo
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; CHECK-LABEL: bb1:
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; CHECK-NEXT: %bar.0 = phi i32
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; CHECK-NEXT: #dbg_value(i32 %bar.0,{{.*}}, ![[UNKNOWN:[0-9]+]]
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; CHECK-NEXT: %totest = load
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; CHECK-NEXT: %add = add i32 %bar.0
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; CHECK-NEXT: #dbg_value(i32 %add, {{.*}}, ![[UNKNOWN]]
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; CHECK-NEXT: %cond = icmp ult
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; CHECK-NEXT: br i1 %cond, label %bb1, label %bb2
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;
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; CHECK-LABEL: bb2:
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; CHECK-NEXT: %toret = add i32 %bar.0, 3
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; CHECK-NEXT: #dbg_value(i32 %toret, {{.*}}, ![[UNKNOWN]]
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; CHECK-NEXT: ret i32 %toret
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define i32 @foo(ptr %bees, ptr %output) {
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entry:
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%bar = alloca i32
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call void @llvm.dbg.declare(metadata ptr %bar, metadata !7, metadata !DIExpression()), !dbg !6
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store i32 0, ptr %bar
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br label %bb1, !dbg !6
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bb1:
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%totest = load i32, ptr %bees, !dbg !8
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%load1 = load i32, ptr %bar, !dbg !9
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%add = add i32 %load1, 1, !dbg !10
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store i32 %add, ptr %bar, !dbg !11
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%toret = add i32 %add, 2, !dbg !12
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%cond = icmp ult i32 %totest, %load1, !dbg !13
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br i1 %cond, label %bb1, label %bb2, !dbg !14
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bb2:
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store i32 %toret, ptr %bar, !dbg !16
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ret i32 %toret
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}
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; In the following, the dbg.value created for the store should get the stores
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; line number, the other dbg.values should be unknown.
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; CHECK-LABEL: define void @bar
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;
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; CHECK: #dbg_value(i32 %map, ![[MAPVAR:[0-9]+]],{{.*}}),
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; CHECK-SAME: ![[UNKNOWN2:[0-9]+]]
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; CHECK-NEXT: store
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; CHECK-NEXT: #dbg_value(ptr %map.addr, ![[MAPVAR]],
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; CHECK-SAME: !DIExpression(DW_OP_deref),
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; CHECK-SAME: ![[UNKNOWN2]]
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; CHECK-NEXT: call
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; CHECK-NEXT: load
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; CHECK-NEXT: #dbg_value(i32 %{{[0-9]+}}, ![[MAPVAR]],
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; CHECK-SAME: ![[UNKNOWN2]]
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define void @bar(i32 %map) !dbg !20 {
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entry:
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%map.addr = alloca i32, align 4
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store i32 %map, ptr %map.addr, align 4, !dbg !27
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call void @llvm.dbg.declare(metadata ptr %map.addr, metadata !21, metadata !DIExpression()), !dbg !22
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%call = call i32 (ptr, ...) @lookup(ptr %map.addr), !dbg !23
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%0 = load i32, ptr %map.addr, align 4, !dbg !24
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%call1 = call i32 (i32, ...) @verify(i32 %0), !dbg !25
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ret void, !dbg !26
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}
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declare void @llvm.dbg.value(metadata, metadata, metadata)
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declare void @llvm.dbg.declare(metadata, metadata, metadata)
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declare i32 @verify(...)
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declare i32 @lookup(...)
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; CHECK: ![[SUBPROG:[0-9]+]] = distinct !DISubprogram(name: "nope",
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; CHECK: ![[UNKNOWN]] = !DILocation(line: 0, scope: ![[SUBPROG]])
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; CHECK: ![[SUBPROG2:[0-9]+]] = distinct !DISubprogram(name: "thin",
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; CHECK: ![[MAPVAR]] = !DILocalVariable(name: "floogie",
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; CHECK: ![[UNKNOWN2]] = !DILocation(line: 0
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!llvm.module.flags = !{!4}
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!llvm.dbg.cu = !{!2}
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!1 = !DILocalVariable(name: "bees", scope: !5, type: null)
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!2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "beards", isOptimized: true, runtimeVersion: 4, emissionKind: FullDebug)
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!3 = !DIFile(filename: "bees.cpp", directory: "")
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = distinct !DISubprogram(name: "nope", scope: !3, file: !3, line: 1, unit: !2)
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!6 = !DILocation(line: 1, scope: !5)
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!7 = !DILocalVariable(name: "flannel", scope: !5, type: null)
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!8 = !DILocation(line: 2, scope: !5)
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!9 = !DILocation(line: 3, scope: !5)
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!10 = !DILocation(line: 4, scope: !5)
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!11 = !DILocation(line: 5, scope: !5)
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!12 = !DILocation(line: 6, scope: !5)
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!13 = !DILocation(line: 7, scope: !5)
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!14 = !DILocation(line: 8, scope: !5)
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!15 = distinct !DISubprogram(name: "wat", scope: !2, file: !3, line: 10, unit: !2)
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!16 = !DILocation(line: 9, scope: !15, inlinedAt: !14)
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!20 = distinct !DISubprogram(name: "thin", scope: !3, file: !3, line: 20, unit: !2)
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!21 = !DILocalVariable(name: "floogie", scope: !20, type: null)
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!22 = !DILocation(line: 21, scope: !20)
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!23 = !DILocation(line: 22, scope: !20)
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!24 = !DILocation(line: 23, scope: !20)
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!25 = !DILocation(line: 24, scope: !20)
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!26 = !DILocation(line: 25, scope: !20)
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!27 = !DILocation(line: 20, scope: !20)
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