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* Reapply DW_AT_low/high_pc patch:Eric Christopher2014-03-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the range machinery for DW_AT_ranges and DW_AT_high/lo_pc. This commit moves us from a single range per subprogram to extending ranges if we are: a) In the same section, and b) In the same enclosing CU. This means we have more fine grained ranges for compile units, and fewer ranges overall when we have multiple functions in the same CU adjacent to each other in the object file. Also remove all of the earlier hacks around this functionality for function sections etc. Also update all of the testcases to take into account the merging functionality. with a fix for location entries in the debug_loc section: Make sure that debug loc entries are relative to the low_pc of the compile unit. This means that when we only have a single range that the offset should be just relative to the low_pc of the unit, for multiple ranges for a CU this means that we'll be relative to 0 which we emit along with DW_AT_ranges. This mostly shows up with linked binaries, so add a testcase with multiple CUs so that our location is going to be offset of a CU with a non-zero low_pc. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204377 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert "Use the range machinery for DW_AT_ranges and DW_AT_high/lo_pc."Eric Christopher2014-03-20
| | | | | | | | This appears to trigger failures with optimization and function arguments somehow. This reverts commit r204277. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204286 91177308-0d34-0410-b5e6-96231b3b80d8
* Use the range machinery for DW_AT_ranges and DW_AT_high/lo_pc.Eric Christopher2014-03-19
| | | | | | | | | | | | | | | | | | This commit moves us from a single range per subprogram to extending ranges if we are: a) In the same section, and b) In the same enclosing CU. This means we have more fine grained ranges for compile units, and fewer ranges overall when we have multiple functions in the same CU adjacent to each other in the object file. Also remove all of the earlier hacks around this functionality for function sections etc. Also update all of the testcases to take into account the merging functionality. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204277 91177308-0d34-0410-b5e6-96231b3b80d8
* DebugInfo: Remove some unneeded conditionals now that DIBuilder no longer ↵David Blaikie2014-02-04
| | | | | | | | | | | emits zero-length arrays as {i32 0} A bunch of test cases needed to be cleaned up for this, many my fault - when implementid imported modules I updated test cases by simply duplicating the prior metadata field - which wasn't always the empty metadata entry. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200731 91177308-0d34-0410-b5e6-96231b3b80d8
* Debug Info: update testing cases to specify the debug info version number.Manman Ren2013-11-22
| | | | | | | | | We are going to drop debug info without a version number or with a different version number, to make sure we don't crash when we see bitcode files with different debug info metadata format. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@195504 91177308-0d34-0410-b5e6-96231b3b80d8
* Debug Info Testing: update context from empty string to null.Manman Ren2013-09-08
| | | | | | | Context should be either null or MDNode. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190267 91177308-0d34-0410-b5e6-96231b3b80d8
* Debug Info Testing: updated to use NULL instead of "i32 0" in a few fields.Manman Ren2013-09-06
| | | | | | | | | Field 2 of DIType (Context), field 9 of DIDerivedType (TypeDerivedFrom), field 12 of DICompositeType (ContainingType), fields 2, 7, 12 of DISubprogram (Context, Type, ContainingType). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190205 91177308-0d34-0410-b5e6-96231b3b80d8
* Debug Info: add an identifier field to DICompositeType.Manman Ren2013-08-26
| | | | | | | | | | | | | | | | | | | DICompositeType will have an identifier field at position 14. For now, the field is set to null in DIBuilder. For DICompositeTypes where the template argument field (the 13th field) was optional, modify DIBuilder to make sure the template argument field is set. Now DICompositeType has 15 fields. Update DIBuilder to use NULL instead of "i32 0" for null value of a MDNode. Update verifier to check that DICompositeType has 15 fields and the last field is null or a MDString. Update testing cases to include an extra field for DICompositeType. The identifier field will be used by type uniquing so a front end can genearte a DICompositeType with a unique identifer. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189282 91177308-0d34-0410-b5e6-96231b3b80d8
* Debug Info Verifier: enable verification of DICompileUnit.Manman Ren2013-07-26
| | | | | | | | | We used to call Verify before adding DICompileUnit to the list, and now we remove the check and always add DICompileUnit to the list in DebugInfoFinder, so we can verify them later on. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187237 91177308-0d34-0410-b5e6-96231b3b80d8
* Update testing cases to pass debug info verifier.Manman Ren2013-07-24
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187066 91177308-0d34-0410-b5e6-96231b3b80d8
* Debug Info: improve the Finder.Manman Ren2013-07-24
| | | | | | | | Improve the Finder to handle context of a DIVariable used by DbgValueInst. Fix testing cases to make them pass the verifier. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187052 91177308-0d34-0410-b5e6-96231b3b80d8
* Debug Info: enable verifying by default and disable testing cases that fail.Manman Ren2013-07-19
| | | | | | | | | | | | | | | | | | | | 1> Use DebugInfoFinder to find debug info MDNodes. 2> Add disable-debug-info-verifier to disable verifying debug info. 3> Disable verifying for testing cases that fail (will update the testing cases later on). 4> MDNodes generated by clang can have empty filename for TAG_inheritance and TAG_friend, so DIType::Verify is modified accordingly. Note that DebugInfoFinder does not list all debug info MDNode. For example, clang can generate: metadata !{i32 786468}, which will fail to verify. This MDNode is used by debug info but not included in DebugInfoFinder. This MDNode is generated as a temporary node in DIBuilder::createFunction Value *TElts[] = { GetTagConstant(VMContext, DW_TAG_base_type) }; MDNode::getTemporary(VMContext, TElts) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186634 91177308-0d34-0410-b5e6-96231b3b80d8
* Solidify the assumption that a DW_TAG_subprogram's type is a ↵David Blaikie2013-05-22
| | | | | | | | | | | | | DW_TAG_subroutine_type There were bits & pieces of code lying around that may've given the impression that debug info metadata supported the possibility that a subprogram's type could be specified by a non-subroutine type describing the return type of a void function. This support was incomplete & unnecessary. Asserts & API have been changed to make the desired usage more clear. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182532 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert "Revert "PR14606: debug info imported_module support""David Blaikie2013-04-22
| | | | | | | | | | This reverts commit r179840 with a fix to test/DebugInfo/two-cus-from-same-file.ll I'm not sure why that test only failed on ARM & MIPS and not X86 Linux, even though the debug info was clearly invalid on all of them, but this ought to fix it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179996 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert "PR14606: debug info imported_module support"Eric Christopher2013-04-19
| | | | | | This reverts commit r179836 as it seems to have caused test failures. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179840 91177308-0d34-0410-b5e6-96231b3b80d8
* PR14606: debug info imported_module supportDavid Blaikie2013-04-19
| | | | | | | | | | Adding another CU-wide list, in this case of imported_modules (since they should be relatively rare, it seemed better to add a list where each element had a "context" value, rather than add a (usually empty) list to every scope). This takes care of DW_TAG_imported_module, but to fully address PR14606 we'll need to expand this to cover DW_TAG_imported_declaration too. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179836 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert "Adding DIImportedModules to DIScopes."David Blaikie2013-03-28
| | | | | | | | | This reverts commit 342d92c7a0adeabc9ab00f3f0d88d739fe7da4c7. Turns out we're going with a different schema design to represent DW_TAG_imported_modules so we won't need this extra field. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178215 91177308-0d34-0410-b5e6-96231b3b80d8
* Adding DIImportedModules to DIScopes.David Blaikie2013-03-27
| | | | | | | | | | | | This is just the basic groundwork for supporting DW_TAG_imported_module but I wanted to commit this before pushing support further into Clang or LLVM so that this rather churny change is isolated from the rest of the work. The major churn here is obviously adding another field (within the common DIScope prefix) to all DIScopes (files, classes, namespaces, lexical scopes, etc). This should be the last big churny change needed for DW_TAG_imported_module/using directive support/PR14606. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178099 91177308-0d34-0410-b5e6-96231b3b80d8
* Move the DIFile in DISubprogram to the beginning to be a common prefix along ↵David Blaikie2013-03-21
| | | | | | with other DIScopes git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177674 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove unused field in DICompileUnitDavid Blaikie2013-03-20
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177590 91177308-0d34-0410-b5e6-96231b3b80d8
* Refactor filename/directory in DICompileUnit into a DIFileDavid Blaikie2013-03-13
| | | | | | | This is the next step towards making the metadata for DIScopes have a common prefix rather than having to delegate based on their tag type. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176913 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove unused "isMain" field from DICompileUnitDavid Blaikie2013-03-12
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176910 91177308-0d34-0410-b5e6-96231b3b80d8
* Update debug info test cases with empty SplitDebugFilename field.David Blaikie2013-03-12
| | | | | | | | | | | | This could be 'null' or the empty string, DIDescriptor::getStringField coalesces the two cases anyway so it's just a matter of legible/efficient representation. The change in behavior of the DICompileUnit::get* functions could be subsumed by the full verification check - but ideally that should just be an assertion if we could front-load the actual debug info metadata failure paths. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176907 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove the (apparently) unnecessary debug info metadata indirection.David Blaikie2013-02-02
| | | | | | | | | | The main lists of debug info metadata attached to the compile_unit had an extra layer of metadata nodes they went through for no apparent reason. This patch removes that (& still passes just as much of the GDB 7.5 test suite). If anyone can show evidence as to why these extra metadata nodes are there I'm open to reverting this patch & documenting why they're there. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174266 91177308-0d34-0410-b5e6-96231b3b80d8
* Now that llvm-dwarfdump supports flags to specify which DWARF section to dump,Eli Bendersky2013-01-25
| | | | | | | | | use them in tests that run llvm-dwarfdump. This is in order to make tests as specific as possible. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173498 91177308-0d34-0410-b5e6-96231b3b80d8
* Temporarily revert c23b933d5f8be9b51a1d22e717c0311f65f87dcd. It's causingEric Christopher2012-08-01
| | | | | | failures in the debug testsuite and possibly PR13486. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161121 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a DW_AT_high_pc for CUs that are a single address range. UpdateEric Christopher2012-07-27
| | | | | | | | | | all tests accordingly. Fixes PR13351. Patch by shinichiro hamaji! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160899 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a test for the previous commit. Also, remove two tests that wereEric Christopher2012-03-27
testing a) the wrong behavior or b) something that I'm already testing in the new test. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153525 91177308-0d34-0410-b5e6-96231b3b80d8
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