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llvm-project/llvm/test/DebugInfo/X86/sdag-dbgvalue-phi-use-3.ll
Jeremy Morse 4495485eb6
[DebugInfo][RemoveDIs] Interpret DPValue objects in SelectionDAG (#72253) 
DPValues are the non-intrinsic replacements for dbg.values, and when an
IR function is converted by SelectionDAG we need to convert the variable
location information in the same way. Happily all the information is in
the same format, it's just stored in a slightly different object,
therefore this patch refactors a few things to store the set of
{Variable,Expr,DILocation,Location} instead of just a pointer to a
DbgValueInst.

This also adds a hook in llc that's much like the one I've added to opt
in PR #71937, allowing tests to optionally ask for the use RemoveDIs
mode if support for it is built into the compiler.

I've added that flag to a variety of SelectionDAG debug-info tests to
ensure that we get some coverage on the RemoveDIs / debug-info-iterator
buildbot.
2023-11-21 17:10:25 +00:00

190 lines
9.7 KiB
LLVM
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; RUN: llc -start-after=codegenprepare -stop-before finalize-isel -o - %s \
; RUN: -experimental-debug-variable-locations=false \
; RUN: | FileCheck %s --check-prefixes=CHECK,DBGVALUE
; RUN: llc -start-after=codegenprepare -stop-before finalize-isel -o - %s \
; RUN: -experimental-debug-variable-locations=true \
; RUN: | FileCheck %s --check-prefixes=CHECK,INSTRREF
; RUN: llc -start-after=codegenprepare -stop-before finalize-isel -o - %s \
; RUN: -experimental-debug-variable-locations=false --try-experimental-debuginfo-iterators \
; RUN: | FileCheck %s --check-prefixes=CHECK,DBGVALUE
; This test case was generated from the following phi-split.c program,
; using: clang phi-split.c -g -O1 -S -o - --target=i386 -emit-llvm
; --------------------------------------
; long long end = 10;
;
; int main() {
; long long x = 9;
; long long y = 13;
; for (long long u = 0; u < end; ++u) {
; x += y;
; y = y * 3;
; }
;
; volatile long long arr[80];
; for (long long q = 0; q < 64; ++q) {
; arr[q] = q + 3;
; }
;
; return x;
; }
; --------------------------------------
;
; ModuleID = 'phi-split.c'
source_filename = "phi-split.c"
target datalayout = "e-m:e-p:32:32-f64:32:64-f80:32-n8:16:32-S128"
target triple = "i386"
@end = dso_local local_unnamed_addr global i64 10, align 8, !dbg !0
; Function Attrs: nounwind
define dso_local i32 @main() local_unnamed_addr #0 !dbg !12 {
; CHECK-LABEL: name: main
entry:
%arr = alloca [80 x i64], align 8
call void @llvm.dbg.value(metadata i64 9, metadata !17, metadata !DIExpression()), !dbg !28
call void @llvm.dbg.value(metadata i64 13, metadata !18, metadata !DIExpression()), !dbg !29
call void @llvm.dbg.value(metadata i64 0, metadata !19, metadata !DIExpression()), !dbg !30
%0 = load i64, ptr @end, align 8, !dbg !31
%cmp20 = icmp sgt i64 %0, 0, !dbg !37
br i1 %cmp20, label %for.body.lr.ph, label %for.cond.cleanup, !dbg !38
for.body.lr.ph: ; preds = %entry
%1 = load i64, ptr @end, align 8
br label %for.body, !dbg !38
for.cond.cleanup.loopexit: ; preds = %for.body
%extract.t = trunc i64 %add to i32, !dbg !38
br label %for.cond.cleanup, !dbg !39
for.cond.cleanup: ; preds = %for.cond.cleanup.loopexit, %entry
%x.0.lcssa.off0 = phi i32 [ 9, %entry ], [ %extract.t, %for.cond.cleanup.loopexit ]
call void @llvm.dbg.value(metadata i64 undef, metadata !17, metadata !DIExpression()), !dbg !28
call void @llvm.dbg.value(metadata i64 0, metadata !26, metadata !DIExpression()), !dbg !41
br label %for.body4, !dbg !42
for.body: ; preds = %for.body.lr.ph, %for.body
; CHECK-LABEL: bb.{{.*}}.for.body:
; CHECK: [[REG2:%[0-9]+]]:gr32 = PHI
; INSTRREF-SAME: debug-instr-number 5
; CHECK-NEXT: [[REG3:%[0-9]+]]:gr32 = PHI
; INSTRREF-SAME: debug-instr-number 6
; CHECK-NEXT: [[REG4:%[0-9]+]]:gr32 = PHI
; INSTRREF-SAME: debug-instr-number 7
; CHECK-NEXT: [[REG5:%[0-9]+]]:gr32_nosp = PHI
; INSTRREF-SAME: debug-instr-number 8
; CHECK-NEXT: [[REG6:%[0-9]+]]:gr32 = PHI
; INSTRREF-SAME: debug-instr-number 9
; CHECK-NEXT: [[REG7:%[0-9]+]]:gr32 = PHI
; INSTRREF-SAME: debug-instr-number 10
; INSTRREF-NEXT: DBG_INSTR_REF !19, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_fragment, 0, 32), dbg-instr-ref(5, 0)
; INSTRREF-NEXT: DBG_INSTR_REF !19, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_fragment, 32, 32), dbg-instr-ref(6, 0)
; INSTRREF-NEXT: DBG_INSTR_REF !18, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_fragment, 0, 32), dbg-instr-ref(7, 0)
; INSTRREF-NEXT: DBG_INSTR_REF !18, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_fragment, 32, 32), dbg-instr-ref(8, 0)
; INSTRREF-NEXT: DBG_INSTR_REF !17, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_fragment, 0, 32), dbg-instr-ref(9, 0)
; INSTRREF-NEXT: DBG_INSTR_REF !17, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_fragment, 32, 32), dbg-instr-ref(10, 0)
; DBGVALUE-NEXT: DBG_VALUE [[REG2]], $noreg, !19, !DIExpression(DW_OP_LLVM_fragment, 0, 32)
; DBGVALUE-NEXT: DBG_VALUE [[REG3]], $noreg, !19, !DIExpression(DW_OP_LLVM_fragment, 32, 32)
; DBGVALUE-NEXT: DBG_VALUE [[REG4]], $noreg, !18, !DIExpression(DW_OP_LLVM_fragment, 0, 32)
; DBGVALUE-NEXT: DBG_VALUE [[REG5]], $noreg, !18, !DIExpression(DW_OP_LLVM_fragment, 32, 32)
; DBGVALUE-NEXT: DBG_VALUE [[REG6]], $noreg, !17, !DIExpression(DW_OP_LLVM_fragment, 0, 32)
; DBGVALUE-NEXT: DBG_VALUE [[REG7]], $noreg, !17, !DIExpression(DW_OP_LLVM_fragment, 32, 32)
%u.023 = phi i64 [ 0, %for.body.lr.ph ], [ %inc, %for.body ]
%y.022 = phi i64 [ 13, %for.body.lr.ph ], [ %mul, %for.body ]
%x.021 = phi i64 [ 9, %for.body.lr.ph ], [ %add, %for.body ]
call void @llvm.dbg.value(metadata i64 %u.023, metadata !19, metadata !DIExpression()), !dbg !30
call void @llvm.dbg.value(metadata i64 %y.022, metadata !18, metadata !DIExpression()), !dbg !29
call void @llvm.dbg.value(metadata i64 %x.021, metadata !17, metadata !DIExpression()), !dbg !28
%add = add nuw nsw i64 %y.022, %x.021, !dbg !43
%mul = mul nsw i64 %y.022, 3, !dbg !45
%inc = add nuw nsw i64 %u.023, 1, !dbg !46
call void @llvm.dbg.value(metadata i64 %inc, metadata !19, metadata !DIExpression()), !dbg !30
call void @llvm.dbg.value(metadata i64 %mul, metadata !18, metadata !DIExpression()), !dbg !29
call void @llvm.dbg.value(metadata i64 %add, metadata !17, metadata !DIExpression()), !dbg !28
%cmp = icmp slt i64 %inc, %1, !dbg !37
br i1 %cmp, label %for.body, label %for.cond.cleanup.loopexit, !dbg !38, !llvm.loop !47
for.cond.cleanup3: ; preds = %for.body4
ret i32 %x.0.lcssa.off0, !dbg !50
for.body4: ; preds = %for.cond.cleanup, %for.body4
%q.019 = phi i64 [ 0, %for.cond.cleanup ], [ %inc7, %for.body4 ]
call void @llvm.dbg.value(metadata i64 %q.019, metadata !26, metadata !DIExpression()), !dbg !41
%add5 = add nuw nsw i64 %q.019, 3, !dbg !51
%idxprom = trunc i64 %q.019 to i32, !dbg !54
%arrayidx = getelementptr inbounds [80 x i64], ptr %arr, i32 0, i32 %idxprom, !dbg !54
store volatile i64 %add5, ptr %arrayidx, align 8, !dbg !55
%inc7 = add nuw nsw i64 %q.019, 1, !dbg !56
call void @llvm.dbg.value(metadata i64 %inc7, metadata !26, metadata !DIExpression()), !dbg !41
%cmp2 = icmp ult i64 %inc7, 64, !dbg !57
br i1 %cmp2, label %for.body4, label %for.cond.cleanup3, !dbg !42, !llvm.loop !58
}
; Function Attrs: nounwind readnone speculatable
declare void @llvm.dbg.value(metadata, metadata, metadata) #1
attributes #0 = { nounwind }
attributes #1 = { nounwind readnone speculatable }
!llvm.dbg.cu = !{!2}
!llvm.module.flags = !{!7, !8, !9, !10}
!llvm.ident = !{!11}
!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
!1 = distinct !DIGlobalVariable(name: "end", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true)
!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 7.0.0 (x)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5)
!3 = !DIFile(filename: "phi-split.c", directory: "")
!4 = !{}
!5 = !{!0}
!6 = !DIBasicType(name: "long long int", size: 64, encoding: DW_ATE_signed)
!7 = !{i32 1, !"NumRegisterParameters", i32 0}
!8 = !{i32 2, !"Dwarf Version", i32 4}
!9 = !{i32 2, !"Debug Info Version", i32 3}
!10 = !{i32 1, !"wchar_size", i32 4}
!11 = !{!"clang version 7.0.0 (x)"}
!12 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 3, type: !13, isLocal: false, isDefinition: true, scopeLine: 3, isOptimized: true, unit: !2, retainedNodes: !16)
!13 = !DISubroutineType(types: !14)
!14 = !{!15}
!15 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!16 = !{!17, !18, !19, !21, !26}
!17 = !DILocalVariable(name: "x", scope: !12, file: !3, line: 4, type: !6)
!18 = !DILocalVariable(name: "y", scope: !12, file: !3, line: 5, type: !6)
!19 = !DILocalVariable(name: "u", scope: !20, file: !3, line: 6, type: !6)
!20 = distinct !DILexicalBlock(scope: !12, file: !3, line: 6, column: 3)
!21 = !DILocalVariable(name: "arr", scope: !12, file: !3, line: 11, type: !22)
!22 = !DICompositeType(tag: DW_TAG_array_type, baseType: !23, size: 5120, elements: !24)
!23 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !6)
!24 = !{!25}
!25 = !DISubrange(count: 80)
!26 = !DILocalVariable(name: "q", scope: !27, file: !3, line: 12, type: !6)
!27 = distinct !DILexicalBlock(scope: !12, file: !3, line: 12, column: 3)
!28 = !DILocation(line: 4, column: 13, scope: !12)
!29 = !DILocation(line: 5, column: 13, scope: !12)
!30 = !DILocation(line: 6, column: 18, scope: !20)
!31 = !DILocation(line: 6, column: 29, scope: !32)
!32 = distinct !DILexicalBlock(scope: !20, file: !3, line: 6, column: 3)
!37 = !DILocation(line: 6, column: 27, scope: !32)
!38 = !DILocation(line: 6, column: 3, scope: !20)
!39 = !DILocation(line: 11, column: 3, scope: !12)
!40 = !DILocation(line: 11, column: 22, scope: !12)
!41 = !DILocation(line: 12, column: 18, scope: !27)
!42 = !DILocation(line: 12, column: 3, scope: !27)
!43 = !DILocation(line: 7, column: 7, scope: !44)
!44 = distinct !DILexicalBlock(scope: !32, file: !3, line: 6, column: 39)
!45 = !DILocation(line: 8, column: 11, scope: !44)
!46 = !DILocation(line: 6, column: 34, scope: !32)
!47 = distinct !{!47, !38, !48}
!48 = !DILocation(line: 9, column: 3, scope: !20)
!50 = !DILocation(line: 16, column: 3, scope: !12)
!51 = !DILocation(line: 13, column: 16, scope: !52)
!52 = distinct !DILexicalBlock(scope: !53, file: !3, line: 12, column: 38)
!53 = distinct !DILexicalBlock(scope: !27, file: !3, line: 12, column: 3)
!54 = !DILocation(line: 13, column: 5, scope: !52)
!55 = !DILocation(line: 13, column: 12, scope: !52)
!56 = !DILocation(line: 12, column: 33, scope: !53)
!57 = !DILocation(line: 12, column: 27, scope: !53)
!58 = distinct !{!58, !42, !59}
!59 = !DILocation(line: 14, column: 3, scope: !27)
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