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path: root/llvm/lib/CodeGen/StackProtector.cpp
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* Access the TargetLoweringInfo from the TargetMachine object instead of ↵Bill Wendling2013-06-191-7/+9
| | | | | | caching it. The TLI may change between functions. No functionality change. llvm-svn: 184349
* Support OpenBSD's native frame protection conventions.Rafael Espindola2013-06-071-11/+36
| | | | | | | | | | | | | | | OpenBSD's stack smashing protection differs slightly from other platforms: 1. The smash handler function is "__stack_smash_handler(const char *funcname)" instead of "__stack_chk_fail(void)". 2. There's a hidden "long __guard_local" object that gets linked into each executable and DSO. Patch by Matthew Dempsky. llvm-svn: 183533
* Remove unused #includes.Bill Wendling2013-03-051-1/+0
| | | | llvm-svn: 176467
* Add the heuristic to differentiate SSPStrong from SSPRequired.Bill Wendling2013-01-231-23/+103
| | | | | | | | | | | | | | | | | | The requirements of the strong heuristic are: * A Protector is required for functions which contain an array, regardless of type or length. * A Protector is required for functions which contain a structure/union which contains an array, regardless of type or length. Note, there is no limit to the depth of nesting. * A protector is required when the address of a local variable (i.e., stack based variable) is exposed. (E.g., such as through a local whose address is taken as part of the RHS of an assignment or a local whose address is taken as part of a function argument.) llvm-svn: 173231
* Add the IR attribute 'sspstrong'.Bill Wendling2013-01-231-0/+6
| | | | | | | | | | | | | | | | | | | | | SSPStrong applies a heuristic to insert stack protectors in these situations: * A Protector is required for functions which contain an array, regardless of type or length. * A Protector is required for functions which contain a structure/union which contains an array, regardless of type or length. Note, there is no limit to the depth of nesting. * A protector is required when the address of a local variable (i.e., stack based variable) is exposed. (E.g., such as through a local whose address is taken as part of the RHS of an assignment or a local whose address is taken as part of a function argument.) This patch implements the SSPString attribute to be equivalent to SSPRequired. This will change in a subsequent patch. llvm-svn: 173230
* Split TargetLowering into a CodeGen and a SelectionDAG part.Benjamin Kramer2013-01-111-3/+3
| | | | | | | | | This fixes some of the cycles between libCodeGen and libSelectionDAG. It's still a complete mess but as long as the edges consist of virtual call it doesn't cause breakage. BasicTTI did static calls and thus broke some build configurations. llvm-svn: 172246
* Move all of the header files which are involved in modelling the LLVM IRChandler Carruth2013-01-021-8/+8
| | | | | | | | | | | | | | | | | | | | | into their new header subdirectory: include/llvm/IR. This matches the directory structure of lib, and begins to correct a long standing point of file layout clutter in LLVM. There are still more header files to move here, but I wanted to handle them in separate commits to make tracking what files make sense at each layer easier. The only really questionable files here are the target intrinsic tablegen files. But that's a battle I'd rather not fight today. I've updated both CMake and Makefile build systems (I think, and my tests think, but I may have missed something). I've also re-sorted the includes throughout the project. I'll be committing updates to Clang, DragonEgg, and Polly momentarily. llvm-svn: 171366
* Remove the Function::getFnAttributes method in favor of using the AttributeSetBill Wendling2012-12-301-2/+4
| | | | | | | | | directly. This is in preparation for removing the use of the 'Attribute' class as a collection of attributes. That will shift to the AttributeSet class instead. llvm-svn: 171253
* Rename the 'Attributes' class to 'Attribute'. It's going to represent a ↵Bill Wendling2012-12-191-2/+2
| | | | | | single attribute in the future. llvm-svn: 170502
* Use the new script to sort the includes of every file under lib.Chandler Carruth2012-12-031-2/+2
| | | | | | | | | | | | | | | | | Sooooo many of these had incorrect or strange main module includes. I have manually inspected all of these, and fixed the main module include to be the nearest plausible thing I could find. If you own or care about any of these source files, I encourage you to take some time and check that these edits were sensible. I can't have broken anything (I strictly added headers, and reordered them, never removed), but they may not be the headers you'd really like to identify as containing the API being implemented. Many forward declarations and missing includes were added to a header files to allow them to parse cleanly when included first. The main module rule does in fact have its merits. =] llvm-svn: 169131
* Create enums for the different attributes.Bill Wendling2012-10-091-2/+2
| | | | | | | We use the enums to query whether an Attributes object has that attribute. The opaque layer is responsible for knowing where that specific attribute is stored. llvm-svn: 165488
* Move TargetData to DataLayout.Micah Villmow2012-10-081-2/+2
| | | | llvm-svn: 165402
* Remove the `hasFnAttr' method from Function.Bill Wendling2012-09-261-2/+2
| | | | | | | The hasFnAttr method has been replaced by querying the Attributes explicitly. No intended functionality change. llvm-svn: 164725
* Add support for the --param ssp-buffer-size= driver option.Chad Rosier2012-08-211-9/+3
| | | | | | PR9673 llvm-svn: 162284
* Implement stack protectors for structures with character arrays in them.Bill Wendling2012-08-171-15/+40
| | | | | | <rdar://problem/10545247> llvm-svn: 162131
* Whitespace cleanup.Bill Wendling2012-08-131-7/+7
| | | | llvm-svn: 161788
* For non-Darwin platforms, we want to generate stack protectors only forBill Wendling2012-08-071-1/+10
| | | | | | | character arrays. This is in line with what GCC does. <rdar://problem/10529227> llvm-svn: 161446
* Enable stack protectors for all arrays, not just char arrays. rdar://5875909Bob Wilson2011-11-231-6/+1
| | | | | | Patch by Bill Wendling. llvm-svn: 145097
* land David Blaikie's patch to de-constify Type, with a few tweaks.Chris Lattner2011-07-181-2/+2
| | | | llvm-svn: 135375
* Convert CallInst and InvokeInst APIs to use ArrayRef.Jay Foad2011-07-151-1/+1
| | | | llvm-svn: 135265
* Inline check that's used only once.Bill Wendling2011-03-291-2/+1
| | | | llvm-svn: 128465
* Rework the logic (and removing the bad check for an unreachable block) so thatBill Wendling2011-03-291-8/+5
| | | | | | | the FailBB dominator is correctly calculated. Believe it or not, there isn't a functionality change here. llvm-svn: 128455
* Don't try to add stack protector logic to a dead basic block. It messes upBill Wendling2011-03-291-1/+2
| | | | | | dominator information. llvm-svn: 128452
* In some cases, the "fail BB dominator" may be null after the BB was split (andBill Wendling2011-03-281-1/+2
| | | | | | | becomes reachable when before it wasn't). Check to make sure that it's not null before trying to use it. llvm-svn: 128434
* Fix the GCC test suite issue exposed by r127477, which was caused by stackCameron Zwarich2011-03-111-3/+3
| | | | | | | protector insertion not working correctly with unreachable code. Since that revision was rolled out, this test doesn't actual fail before this fix. llvm-svn: 127497
* Make more passes preserve dominators (or state that they preserve dominators ifCameron Zwarich2011-01-081-0/+18
| | | | | | | | | | they all ready do). This removes two dominator recomputations prior to isel, which is a 1% improvement in total llc time for 403.gcc. The only potentially suspect thing is making GCStrategy recompute dominators if it used a custom lowering strategy. llvm-svn: 123064
* Get rid of static constructors for pass registration. Instead, every pass ↵Owen Anderson2010-10-191-2/+6
| | | | | | | | | | | | | | | | | exposes an initializeMyPassFunction(), which must be called in the pass's constructor. This function uses static dependency declarations to recursively initialize the pass's dependencies. Clients that only create passes through the createFooPass() APIs will require no changes. Clients that want to use the CommandLine options for passes will need to manually call the appropriate initialization functions in PassInitialization.h before parsing commandline arguments. I have tested this with all standard configurations of clang and llvm-gcc on Darwin. It is possible that there are problems with the static dependencies that will only be visible with non-standard options. If you encounter any crash in pass registration/creation, please send the testcase to me directly. llvm-svn: 116820
* Now with fewer extraneous semicolons!Owen Anderson2010-10-071-1/+1
| | | | llvm-svn: 115996
* Reapply r110396, with fixes to appease the Linux buildbot gods.Owen Anderson2010-08-061-2/+2
| | | | llvm-svn: 110460
* Revert r110396 to fix buildbots.Owen Anderson2010-08-061-2/+2
| | | | llvm-svn: 110410
* Don't use PassInfo* as a type identifier for passes. Instead, use the ↵Owen Anderson2010-08-051-2/+2
| | | | | | | | address of the static ID member as the sole unique type identifier. Clean up APIs related to this change. llvm-svn: 110396
* Fix batch of converting RegisterPass<> to INTIALIZE_PASS().Owen Anderson2010-07-211-2/+2
| | | | llvm-svn: 109045
* tighten up this code.Chris Lattner2010-07-061-12/+7
| | | | llvm-svn: 107670
* Fix up -fstack-protector on linux to use the segmentEric Christopher2010-07-061-2/+15
| | | | | | | | | registers. Split out testcases per architecture and os now. Patch from Nelson Elhage. llvm-svn: 107640
* Uniformize the names of type predicates: rather than having isFloatTy andDuncan Sands2010-02-151-1/+1
| | | | | | isInteger, we now have isFloatTy and isIntegerTy. Requested by Chris! llvm-svn: 96223
* Move remaining stuff to the isInteger predicate.Benjamin Kramer2010-01-051-1/+1
| | | | llvm-svn: 92771
* Remove VISIBILITY_HIDDEN from class/struct found inside anonymous namespaces.Nick Lewycky2009-10-251-1/+1
| | | | | | | Chris claims we should never have visibility_hidden inside any .cpp file but that's still not true even after this commit. llvm-svn: 85042
* Neuter stack protectors by only checking character arrays. This is what GCCBill Wendling2009-10-231-1/+6
| | | | | | does. llvm-svn: 84916
* Push LLVMContexts through the IntegerType APIs.Owen Anderson2009-08-131-4/+7
| | | | llvm-svn: 78948
* Revert yesterday's change by removing the LLVMContext parameter to ↵Owen Anderson2009-07-151-1/+1
| | | | | | AllocaInst and MallocInst. llvm-svn: 75863
* Move EVER MORE stuff over to LLVMContext.Owen Anderson2009-07-141-1/+1
| | | | llvm-svn: 75703
* This started as a small change, I swear. Unfortunately, lots of things call ↵Owen Anderson2009-07-091-1/+1
| | | | | | the [I|F]CmpInst constructors. Who knew!? llvm-svn: 75200
* Rename PaddedSize to AllocSize, in the hope that thisDuncan Sands2009-05-091-1/+1
| | | | | | | will make it more obvious what it represents, and stop it being confused with the StoreSize. llvm-svn: 71349
* When we split a basic block, there's a default branch to the newly created BB.Bill Wendling2009-03-061-0/+3
| | | | | | Delete this default branch, because we're going to generate our own. llvm-svn: 66234
* Rename getABITypeSize to getTypePaddedSize, asDuncan Sands2009-01-121-1/+1
| | | | | | suggested by Chris. llvm-svn: 62099
* Rename stackprotector_create intrinsic to stackprotector.Bill Wendling2008-11-181-1/+1
| | | | llvm-svn: 59519
* Remove the stackprotector_check intrinsic. Use a volatile load instead.Bill Wendling2008-11-181-6/+4
| | | | llvm-svn: 59504
* - Use "moveAfter" instead of "remove/insert" of a basic block.Bill Wendling2008-11-181-103/+104
| | | | | | | | | - Use less indentation in coding. - Shorten description. - Update comments. - Move code around llvm-svn: 59496
* Implement stack protectors as function attributes: "ssp" and "sspreq".Bill Wendling2008-11-131-14/+12
| | | | llvm-svn: 59202
* Small simplification. Use the iterator already present as the insertion point.Bill Wendling2008-11-101-4/+3
| | | | llvm-svn: 59008
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