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* [AsmPrinter] Hide implementation detailsBenjamin Kramer2015-07-011-1/+1
| | | | | | NFC. llvm-svn: 241169
* [SEH] Add new intrinsics for recovering and restoring parent framesReid Kleckner2015-06-301-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | The incoming EBP value established by the runtime is actually a pointer to the end of the EH registration object, and not the true parent function frame pointer. Clang doesn't need llvm.x86.seh.exceptioninfo anymore because we know that the exception info pointer is at a fixed offset from this incoming EBP. The llvm.x86.seh.recoverfp intrinsic takes an EBP value provided by the EH runtime and returns a pointer that is usable with llvm.framerecover. The llvm.x86.seh.restoreframe intrinsic is inserted by the 32-bit specific preparation pass in blocks targetted by the EH runtime. It re-establishes any physical registers used by the parent function to address the stack, such as the frame, base, and stack pointers. Neither of these intrinsics correctly handle stack realignment prologues yet, but it's possible to add that later. Reviewers: majnemer Differential Revision: http://reviews.llvm.org/D10848 llvm-svn: 241125
* Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC)Alexander Kornienko2015-06-231-1/+1
| | | | | | Apparently, the style needs to be agreed upon first. llvm-svn: 240390
* Fixed/added namespace ending comments using clang-tidy. NFCAlexander Kornienko2015-06-191-1/+1
| | | | | | | | | | | | | The patch is generated using this command: tools/clang/tools/extra/clang-tidy/tool/run-clang-tidy.py -fix \ -checks=-*,llvm-namespace-comment -header-filter='llvm/.*|clang/.*' \ llvm/lib/ Thanks to Eugene Kosov for the original patch! llvm-svn: 240137
* [WinEH] Add 32-bit SEH state table emission prototypeReid Kleckner2015-06-091-0/+7
| | | | | | | | | | | | This gets all the handler info through to the asm printer and we can look at the .xdata tables now. I've convinced one small catch-all test case to work, but other than that, it would be a stretch to say this is functional. The state numbering algorithm avoids doing any scope reconstruction as we do for C++ to simplify the implementation. llvm-svn: 239433
* [WinEH] Emit EH tables for __CxxFrameHandler3 on 32-bit x86Reid Kleckner2015-05-291-5/+13
| | | | | | | | | | | | | Small (really small!) C++ exception handling examples work on 32-bit x86 now. This change disables the use of .seh_* directives in WinException when CFI is not in use. It also uses absolute symbol references in the tables instead of imagerel32 relocations. Also fixes a cache invalidation bug in MMI personality classification. llvm-svn: 238575
* Rename Win64Exception.(cpp|h) to WinException.(cpp|h)Reid Kleckner2015-05-281-0/+61
This is in preparation for reusing this for 32-bit x86 EH table emission. Also updates the type name for consistency. NFC llvm-svn: 238521
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