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llvm-6502/test/DebugInfo/X86/nophysreg.ll
Duncan P. N. Exon Smith b056aa798d DebugInfo: Move new hierarchy into place 
Move the specialized metadata nodes for the new debug info hierarchy
into place, finishing off PR22464.  I've done bootstraps (and all that)
and I'm confident this commit is NFC as far as DWARF output is
concerned.  Let me know if I'm wrong :).

The code changes are fairly mechanical:

  - Bumped the "Debug Info Version".
  - `DIBuilder` now creates the appropriate subclass of `MDNode`.
  - Subclasses of DIDescriptor now expect to hold their "MD"
    counterparts (e.g., `DIBasicType` expects `MDBasicType`).
  - Deleted a ton of dead code in `AsmWriter.cpp` and `DebugInfo.cpp`
    for printing comments.
  - Big update to LangRef to describe the nodes in the new hierarchy.
    Feel free to make it better.

Testcase changes are enormous.  There's an accompanying clang commit on
its way.

If you have out-of-tree debug info testcases, I just broke your build.

  - `upgrade-specialized-nodes.sh` is attached to PR22564.  I used it to
    update all the IR testcases.
  - Unfortunately I failed to find way to script the updates to CHECK
    lines, so I updated all of these by hand.  This was fairly painful,
    since the old CHECKs are difficult to reason about.  That's one of
    the benefits of the new hierarchy.

This work isn't quite finished, BTW.  The `DIDescriptor` subclasses are
almost empty wrappers, but not quite: they still have loose casting
checks (see the `RETURN_FROM_RAW()` macro).  Once they're completely
gutted, I'll rename the "MD" classes to "DI" and kill the wrappers.  I
also expect to make a few schema changes now that it's easier to reason
about everything.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231082 91177308-0d34-0410-b5e6-96231b3b80d8
2015-03-03 17:24:31 +00:00

204 lines
9.4 KiB
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; RUN: llc -filetype=obj < %s | llvm-dwarfdump -debug-dump=info - | FileCheck %s
;
; PR22296: In this testcase the DBG_VALUE describing "p5" becomes unavailable
; because the register its address is in is clobbered and we (currently) aren't
; smart enough to realize that the value is rematerialized immediately after the
; DBG_VALUE and/or is actually a stack slot.
;
; Test that we handle this situation gracefully by omitting the DW_AT_location
; and not asserting.
; Note that this check may XPASS in the future if DbgValueHistoryCalculator
; becoms smarter. That would be fine, too.
;
; CHECK: DW_TAG_subprogram
; CHECK: linkage_name{{.*}}_Z2f21A
; CHECK: DW_TAG_formal_parameter
; CHECK-NOT: DW_AT_location
; CHECK-NEXT: DW_AT_name {{.*}}"p5"
;
; // Compile at -O1
; struct A {
; int *m1;
; int m2;
; };
;
; void f1(int *p1, int p2);
; void __attribute__((always_inline)) f2(A p5) { f1(p5.m1, p5.m2); }
;
; void func(void*);
; void func(const int &, const int&);
; int cond();
; void f() {
; while (cond()) {
; int x;
; func(x, 0);
; while (cond()) {
; char y;
; func(&y);
; char j;
; func(&j);
; char I;
; func(&I);
; func(0, 0);
; A g;
; g.m1 = &x;
; f2(g);
; }
; }
; }
; ModuleID = 'test.cpp'
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-apple-macosx10.10.0"
%struct.A = type { i32*, i32 }
; Function Attrs: alwaysinline ssp uwtable
define void @_Z2f21A(i32* %p5.coerce0, i32 %p5.coerce1) #0 {
entry:
tail call void @llvm.dbg.value(metadata i32* %p5.coerce0, i64 0, metadata !16, metadata !33), !dbg !34
tail call void @llvm.dbg.value(metadata i32 %p5.coerce1, i64 0, metadata !16, metadata !35), !dbg !34
tail call void @llvm.dbg.declare(metadata %struct.A* undef, metadata !16, metadata !36), !dbg !34
tail call void @_Z2f1Pii(i32* %p5.coerce0, i32 %p5.coerce1), !dbg !37
ret void, !dbg !38
}
; Function Attrs: nounwind readnone
declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
declare void @_Z2f1Pii(i32*, i32) #2
; Function Attrs: ssp uwtable
define void @_Z1fv() #3 {
entry:
%x = alloca i32, align 4
%ref.tmp = alloca i32, align 4
%y = alloca i8, align 1
%j = alloca i8, align 1
%I = alloca i8, align 1
%ref.tmp5 = alloca i32, align 4
%ref.tmp6 = alloca i32, align 4
%call11 = call i32 @_Z4condv(), !dbg !39
%tobool12 = icmp eq i32 %call11, 0, !dbg !39
br i1 %tobool12, label %while.end7, label %while.body, !dbg !40
while.cond.loopexit: ; preds = %while.body4, %while.body
%call = call i32 @_Z4condv(), !dbg !39
%tobool = icmp eq i32 %call, 0, !dbg !39
br i1 %tobool, label %while.end7, label %while.body, !dbg !40
while.body: ; preds = %entry, %while.cond.loopexit
store i32 0, i32* %ref.tmp, align 4, !dbg !41, !tbaa !42
call void @llvm.dbg.value(metadata i32* %x, i64 0, metadata !21, metadata !36), !dbg !46
call void @_Z4funcRKiS0_(i32* dereferenceable(4) %x, i32* dereferenceable(4) %ref.tmp), !dbg !47
%call29 = call i32 @_Z4condv(), !dbg !48
%tobool310 = icmp eq i32 %call29, 0, !dbg !48
br i1 %tobool310, label %while.cond.loopexit, label %while.body4, !dbg !49
while.body4: ; preds = %while.body, %while.body4
call void @llvm.dbg.value(metadata i8* %y, i64 0, metadata !23, metadata !36), !dbg !50
call void @_Z4funcPv(i8* %y), !dbg !51
call void @llvm.dbg.value(metadata i8* %j, i64 0, metadata !26, metadata !36), !dbg !52
call void @_Z4funcPv(i8* %j), !dbg !53
call void @llvm.dbg.value(metadata i8* %I, i64 0, metadata !27, metadata !36), !dbg !54
call void @_Z4funcPv(i8* %I), !dbg !55
store i32 0, i32* %ref.tmp5, align 4, !dbg !56, !tbaa !42
store i32 0, i32* %ref.tmp6, align 4, !dbg !57, !tbaa !42
call void @_Z4funcRKiS0_(i32* dereferenceable(4) %ref.tmp5, i32* dereferenceable(4) %ref.tmp6), !dbg !58
call void @llvm.dbg.declare(metadata %struct.A* undef, metadata !28, metadata !36), !dbg !59
call void @llvm.dbg.value(metadata i32* %x, i64 0, metadata !28, metadata !33), !dbg !59
call void @llvm.dbg.value(metadata i32* %x, i64 0, metadata !21, metadata !36), !dbg !46
call void @llvm.dbg.value(metadata i32* %x, i64 0, metadata !60, metadata !33), !dbg !62
call void @llvm.dbg.value(metadata i32 undef, i64 0, metadata !60, metadata !35), !dbg !62
call void @llvm.dbg.declare(metadata %struct.A* undef, metadata !60, metadata !36), !dbg !62
call void @_Z2f1Pii(i32* %x, i32 undef), !dbg !63
%call2 = call i32 @_Z4condv(), !dbg !48
%tobool3 = icmp eq i32 %call2, 0, !dbg !48
br i1 %tobool3, label %while.cond.loopexit, label %while.body4, !dbg !49
while.end7: ; preds = %while.cond.loopexit, %entry
ret void, !dbg !64
}
declare i32 @_Z4condv()
declare void @_Z4funcRKiS0_(i32* dereferenceable(4), i32* dereferenceable(4))
declare void @_Z4funcPv(i8*)
; Function Attrs: nounwind readnone
declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1
attributes #0 = { alwaysinline ssp uwtable }
attributes #1 = { nounwind readnone }
attributes #3 = { ssp uwtable }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!29, !30, !31}
!llvm.ident = !{!32}
!0 = !MDCompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.7.0 (trunk 227088) (llvm/trunk 227091)", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !10, globals: !2, imports: !2)
!1 = !MDFile(filename: "test.cpp", directory: "")
!2 = !{}
!3 = !{!4}
!4 = !MDCompositeType(tag: DW_TAG_structure_type, name: "A", line: 1, size: 128, align: 64, file: !1, elements: !5, identifier: "_ZTS1A")
!5 = !{!6, !9}
!6 = !MDDerivedType(tag: DW_TAG_member, name: "m1", line: 2, size: 64, align: 64, file: !1, scope: !"_ZTS1A", baseType: !7)
!7 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !8)
!8 = !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!9 = !MDDerivedType(tag: DW_TAG_member, name: "m2", line: 3, size: 32, align: 32, offset: 64, file: !1, scope: !"_ZTS1A", baseType: !8)
!10 = !{!11, !17}
!11 = !MDSubprogram(name: "f2", linkageName: "_Z2f21A", line: 7, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 7, file: !1, scope: !12, type: !13, function: void (i32*, i32)* @_Z2f21A, variables: !15)
!12 = !MDFile(filename: "test.cpp", directory: "")
!13 = !MDSubroutineType(types: !14)
!14 = !{null, !"_ZTS1A"}
!15 = !{!16}
!16 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "p5", line: 7, arg: 1, scope: !11, file: !12, type: !"_ZTS1A")
!17 = !MDSubprogram(name: "f", linkageName: "_Z1fv", line: 12, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 12, file: !1, scope: !12, type: !18, function: void ()* @_Z1fv, variables: !20)
!18 = !MDSubroutineType(types: !19)
!19 = !{null}
!20 = !{!21, !23, !26, !27, !28}
!21 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "x", line: 14, scope: !22, file: !12, type: !8)
!22 = distinct !MDLexicalBlock(line: 13, column: 18, file: !1, scope: !17)
!23 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "y", line: 17, scope: !24, file: !12, type: !25)
!24 = distinct !MDLexicalBlock(line: 16, column: 20, file: !1, scope: !22)
!25 = !MDBasicType(tag: DW_TAG_base_type, name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
!26 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "j", line: 19, scope: !24, file: !12, type: !25)
!27 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "I", line: 21, scope: !24, file: !12, type: !25)
!28 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "g", line: 24, scope: !24, file: !12, type: !"_ZTS1A")
!29 = !{i32 2, !"Dwarf Version", i32 2}
!30 = !{i32 2, !"Debug Info Version", i32 3}
!31 = !{i32 1, !"PIC Level", i32 2}
!32 = !{!"clang version 3.7.0 (trunk 227088) (llvm/trunk 227091)"}
!33 = !MDExpression(DW_OP_bit_piece, 0, 8)
!34 = !MDLocation(line: 7, column: 42, scope: !11)
!35 = !MDExpression(DW_OP_bit_piece, 8, 4)
!36 = !MDExpression()
!37 = !MDLocation(line: 7, column: 48, scope: !11)
!38 = !MDLocation(line: 7, column: 66, scope: !11)
!39 = !MDLocation(line: 13, column: 10, scope: !17)
!40 = !MDLocation(line: 13, column: 3, scope: !17)
!41 = !MDLocation(line: 15, column: 13, scope: !22)
!42 = !{!43, !43, i64 0}
!43 = !{!"int", !44, i64 0}
!44 = !{!"omnipotent char", !45, i64 0}
!45 = !{!"Simple C/C++ TBAA"}
!46 = !MDLocation(line: 14, column: 9, scope: !22)
!47 = !MDLocation(line: 15, column: 5, scope: !22)
!48 = !MDLocation(line: 16, column: 12, scope: !22)
!49 = !MDLocation(line: 16, column: 5, scope: !22)
!50 = !MDLocation(line: 17, column: 12, scope: !24)
!51 = !MDLocation(line: 18, column: 7, scope: !24)
!52 = !MDLocation(line: 19, column: 12, scope: !24)
!53 = !MDLocation(line: 20, column: 7, scope: !24)
!54 = !MDLocation(line: 21, column: 12, scope: !24)
!55 = !MDLocation(line: 22, column: 7, scope: !24)
!56 = !MDLocation(line: 23, column: 12, scope: !24)
!57 = !MDLocation(line: 23, column: 15, scope: !24)
!58 = !MDLocation(line: 23, column: 7, scope: !24)
!59 = !MDLocation(line: 24, column: 9, scope: !24)
!60 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "p5", line: 7, arg: 1, scope: !11, file: !12, type: !"_ZTS1A", inlinedAt: !61)
!61 = distinct !MDLocation(line: 26, column: 7, scope: !24)
!62 = !MDLocation(line: 7, column: 42, scope: !11, inlinedAt: !61)
!63 = !MDLocation(line: 7, column: 48, scope: !11, inlinedAt: !61)
!64 = !MDLocation(line: 29, column: 1, scope: !17)
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