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https://github.com/c64scene-ar/llvm-6502.git
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b056aa798d
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
157 lines
6.8 KiB
LLVM
157 lines
6.8 KiB
LLVM
; RUN: opt -inline -S < %s | FileCheck %s
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;
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; A hand-edited version of inline-debug-info.ll to test inlining of a
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; function with multiple returns.
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;
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; Make sure the branch instructions created during inlining has a debug location,
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; so the range of the inlined function is correct.
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; CHECK: br label %_Z4testi.exit, !dbg ![[MD:[0-9]+]]
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; CHECK: br label %_Z4testi.exit, !dbg ![[MD]]
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; CHECK: br label %invoke.cont, !dbg ![[MD]]
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; The branch instruction has the source location of line 9 and its inlined location
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; has the source location of line 14.
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; CHECK: ![[INL:[0-9]+]] = distinct !MDLocation(line: 14, scope: {{.*}})
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; CHECK: ![[MD]] = !MDLocation(line: 9, scope: {{.*}}, inlinedAt: ![[INL]])
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; ModuleID = 'test.cpp'
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-darwin12.0.0"
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@_ZTIi = external constant i8*
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@global_var = external global i32
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; copy of above function with multiple returns
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define i32 @_Z4testi(i32 %k) {
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entry:
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%retval = alloca i32, align 4
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%k.addr = alloca i32, align 4
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%k2 = alloca i32, align 4
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store i32 %k, i32* %k.addr, align 4
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call void @llvm.dbg.declare(metadata i32* %k.addr, metadata !13, metadata !MDExpression()), !dbg !14
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call void @llvm.dbg.declare(metadata i32* %k2, metadata !15, metadata !MDExpression()), !dbg !16
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%0 = load i32, i32* %k.addr, align 4, !dbg !16
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%call = call i32 @_Z8test_exti(i32 %0), !dbg !16
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store i32 %call, i32* %k2, align 4, !dbg !16
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%1 = load i32, i32* %k2, align 4, !dbg !17
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%cmp = icmp sgt i32 %1, 100, !dbg !17
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br i1 %cmp, label %if.then, label %if.end, !dbg !17
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if.then: ; preds = %entry
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%2 = load i32, i32* %k2, align 4, !dbg !18
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store i32 %2, i32* %retval, !dbg !18
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br label %return, !dbg !18
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if.end: ; preds = %entry
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store i32 0, i32* %retval, !dbg !19
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%3 = load i32, i32* %retval, !dbg !20 ; hand-edited
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ret i32 %3, !dbg !20 ; hand-edited
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return: ; preds = %if.end, %if.then
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%4 = load i32, i32* %retval, !dbg !20
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ret i32 %4, !dbg !20
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}
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
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declare i32 @_Z8test_exti(i32)
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define i32 @_Z5test2v() {
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entry:
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%exn.slot = alloca i8*
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%ehselector.slot = alloca i32
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%e = alloca i32, align 4
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%0 = load i32, i32* @global_var, align 4, !dbg !21
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%call = invoke i32 @_Z4testi(i32 %0)
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to label %invoke.cont unwind label %lpad, !dbg !21
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invoke.cont: ; preds = %entry
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br label %try.cont, !dbg !23
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lpad: ; preds = %entry
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%1 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
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catch i8* bitcast (i8** @_ZTIi to i8*), !dbg !21
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%2 = extractvalue { i8*, i32 } %1, 0, !dbg !21
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store i8* %2, i8** %exn.slot, !dbg !21
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%3 = extractvalue { i8*, i32 } %1, 1, !dbg !21
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store i32 %3, i32* %ehselector.slot, !dbg !21
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br label %catch.dispatch, !dbg !21
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catch.dispatch: ; preds = %lpad
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%sel = load i32, i32* %ehselector.slot, !dbg !23
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%4 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*)) #2, !dbg !23
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%matches = icmp eq i32 %sel, %4, !dbg !23
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br i1 %matches, label %catch, label %eh.resume, !dbg !23
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catch: ; preds = %catch.dispatch
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call void @llvm.dbg.declare(metadata i32* %e, metadata !24, metadata !MDExpression()), !dbg !25
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%exn = load i8*, i8** %exn.slot, !dbg !23
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%5 = call i8* @__cxa_begin_catch(i8* %exn) #2, !dbg !23
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%6 = bitcast i8* %5 to i32*, !dbg !23
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%7 = load i32, i32* %6, align 4, !dbg !23
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store i32 %7, i32* %e, align 4, !dbg !23
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store i32 0, i32* @global_var, align 4, !dbg !26
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call void @__cxa_end_catch() #2, !dbg !28
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br label %try.cont, !dbg !28
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try.cont: ; preds = %catch, %invoke.cont
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store i32 1, i32* @global_var, align 4, !dbg !29
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ret i32 0, !dbg !30
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eh.resume: ; preds = %catch.dispatch
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%exn1 = load i8*, i8** %exn.slot, !dbg !23
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%sel2 = load i32, i32* %ehselector.slot, !dbg !23
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%lpad.val = insertvalue { i8*, i32 } undef, i8* %exn1, 0, !dbg !23
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%lpad.val3 = insertvalue { i8*, i32 } %lpad.val, i32 %sel2, 1, !dbg !23
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resume { i8*, i32 } %lpad.val3, !dbg !23
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}
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declare i32 @__gxx_personality_v0(...)
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; Function Attrs: nounwind readnone
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declare i32 @llvm.eh.typeid.for(i8*) #1
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declare i8* @__cxa_begin_catch(i8*)
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declare void @__cxa_end_catch()
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attributes #1 = { nounwind readnone }
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attributes #2 = { nounwind }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!31}
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!0 = !MDCompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.3 ", isOptimized: false, emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
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!1 = !MDFile(filename: "<unknown>", directory: "")
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!2 = !{i32 0}
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!3 = !{!4, !10}
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!4 = !MDSubprogram(name: "test", linkageName: "_Z4testi", line: 4, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 4, file: !5, scope: !6, type: !7, function: i32 (i32)* @_Z4testi, variables: !2)
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!5 = !MDFile(filename: "test.cpp", directory: "")
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!6 = !MDFile(filename: "test.cpp", directory: "")
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!7 = !MDSubroutineType(types: !8)
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!8 = !{!9, !9}
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!9 = !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!10 = !MDSubprogram(name: "test2", linkageName: "_Z5test2v", line: 11, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 11, file: !5, scope: !6, type: !11, function: i32 ()* @_Z5test2v, variables: !2)
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!11 = !MDSubroutineType(types: !12)
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!12 = !{!9}
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!13 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "k", line: 4, arg: 1, scope: !4, file: !6, type: !9)
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!14 = !MDLocation(line: 4, scope: !4)
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!15 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "k2", line: 5, scope: !4, file: !6, type: !9)
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!16 = !MDLocation(line: 5, scope: !4)
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!17 = !MDLocation(line: 6, scope: !4)
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!18 = !MDLocation(line: 7, scope: !4)
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!19 = !MDLocation(line: 8, scope: !4)
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!20 = !MDLocation(line: 9, scope: !4)
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!21 = !MDLocation(line: 14, scope: !22)
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!22 = distinct !MDLexicalBlock(line: 13, column: 0, file: !5, scope: !10)
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!23 = !MDLocation(line: 15, scope: !22)
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!24 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "e", line: 16, scope: !10, file: !6, type: !9)
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!25 = !MDLocation(line: 16, scope: !10)
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!26 = !MDLocation(line: 17, scope: !27)
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!27 = distinct !MDLexicalBlock(line: 16, column: 0, file: !5, scope: !10)
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!28 = !MDLocation(line: 18, scope: !27)
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!29 = !MDLocation(line: 19, scope: !10)
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!30 = !MDLocation(line: 20, scope: !10)
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!31 = !{i32 1, !"Debug Info Version", i32 3}
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