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56 Commits

Author SHA1 Message Date
Bill Wendling
b53357de39 Create enums for the different attributes. 
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
 2012-10-09 07:45:08 +00:00
Micah Villmow
bb1a25cd67 Move TargetData to DataLayout. 
llvm-svn: 165402
 2012-10-08 16:38:25 +00:00
Bill Wendling
92f3ab845d Remove the `hasFnAttr' method from Function. 
The hasFnAttr method has been replaced by querying the Attributes explicitly. No
intended functionality change.

llvm-svn: 164725
 2012-09-26 21:48:26 +00:00
Chad Rosier
db68185ff8 Add support for the --param ssp-buffer-size= driver option. 
PR9673

llvm-svn: 162284
 2012-08-21 16:15:24 +00:00
Bill Wendling
5ae9ccaa74 Implement stack protectors for structures with character arrays in them. 
<rdar://problem/10545247>

llvm-svn: 162131
 2012-08-17 20:59:56 +00:00
Bill Wendling
59b0b53089 Whitespace cleanup. 
llvm-svn: 161788
 2012-08-13 21:20:43 +00:00
Bill Wendling
06a580b5da For non-Darwin platforms, we want to generate stack protectors only for 
character arrays. This is in line with what GCC does.
<rdar://problem/10529227>

llvm-svn: 161446
 2012-08-07 20:59:05 +00:00
Bob Wilson
8722a53e52 Enable stack protectors for all arrays, not just char arrays. rdar://5875909 
Patch by Bill Wendling.

llvm-svn: 145097
 2011-11-23 07:13:56 +00:00
Chris Lattner
e1fe7061ce land David Blaikie's patch to de-constify Type, with a few tweaks. 
llvm-svn: 135375
 2011-07-18 04:54:35 +00:00
Jay Foad
c826df8fb7 Convert CallInst and InvokeInst APIs to use ArrayRef. 
llvm-svn: 135265
 2011-07-15 08:37:34 +00:00
Bill Wendling
7469ccb3bd Inline check that's used only once. 
llvm-svn: 128465
 2011-03-29 17:12:55 +00:00
Bill Wendling
47b8e67328 Rework the logic (and removing the bad check for an unreachable block) so that 
the FailBB dominator is correctly calculated. Believe it or not, there isn't a
functionality change here.

llvm-svn: 128455
 2011-03-29 07:28:52 +00:00
Bill Wendling
ded022ad8b Don't try to add stack protector logic to a dead basic block. It messes up 
dominator information.

llvm-svn: 128452
 2011-03-29 05:15:48 +00:00
Bill Wendling
cb8447ad52 In some cases, the "fail BB dominator" may be null after the BB was split (and 
becomes reachable when before it wasn't). Check to make sure that it's not null
before trying to use it.

llvm-svn: 128434
 2011-03-28 23:02:18 +00:00
Cameron Zwarich
39a49276db Fix the GCC test suite issue exposed by r127477, which was caused by stack 
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
 2011-03-11 21:51:56 +00:00
Cameron Zwarich
a40df277f1 Make more passes preserve dominators (or state that they preserve dominators if 
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
 2011-01-08 17:01:52 +00:00
Owen Anderson
46990c17f7 Get rid of static constructors for pass registration. Instead, every pass 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
 2010-10-19 17:21:58 +00:00
Owen Anderson
69cbf2e8b7 Now with fewer extraneous semicolons! 
llvm-svn: 115996
 2010-10-07 22:25:06 +00:00
Owen Anderson
f2fea95f2f Reapply r110396, with fixes to appease the Linux buildbot gods. 
llvm-svn: 110460
 2010-08-06 18:33:48 +00:00
Owen Anderson
aadd8a89ca Revert r110396 to fix buildbots. 
llvm-svn: 110410
 2010-08-06 00:23:35 +00:00
Owen Anderson
b9762c07cb Don't use PassInfo* as a type identifier for passes. Instead, use the address of the static 
ID member as the sole unique type identifier.  Clean up APIs related to this change.

llvm-svn: 110396
 2010-08-05 23:42:04 +00:00
Owen Anderson
f8addbb0a1 Fix batch of converting RegisterPass<> to INTIALIZE_PASS(). 
llvm-svn: 109045
 2010-07-21 22:09:45 +00:00
Chris Lattner
18ba4703b0 tighten up this code. 
llvm-svn: 107670
 2010-07-06 15:59:27 +00:00
Eric Christopher
e873e9978c Fix up -fstack-protector on linux to use the segment 
registers.  Split out testcases per architecture and os
now.

Patch from Nelson Elhage.

llvm-svn: 107640
 2010-07-06 05:18:56 +00:00
Duncan Sands
2acaf3609c Uniformize the names of type predicates: rather than having isFloatTy and 
isInteger, we now have isFloatTy and isIntegerTy.  Requested by Chris!

llvm-svn: 96223
 2010-02-15 16:12:20 +00:00
Benjamin Kramer
0ba7479f2c Move remaining stuff to the isInteger predicate. 
llvm-svn: 92771
 2010-01-05 21:05:54 +00:00
Nick Lewycky
711c726c97 Remove VISIBILITY_HIDDEN from class/struct found inside anonymous namespaces. 
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
 2009-10-25 06:33:48 +00:00
Bill Wendling
283fb69c0a Neuter stack protectors by only checking character arrays. This is what GCC 
does.

llvm-svn: 84916
 2009-10-23 00:01:05 +00:00
Owen Anderson
9df206d02d Push LLVMContexts through the IntegerType APIs. 
llvm-svn: 78948
 2009-08-13 21:58:54 +00:00
Owen Anderson
4483fbda5e Revert yesterday's change by removing the LLVMContext parameter to AllocaInst and MallocInst. 
llvm-svn: 75863
 2009-07-15 23:53:25 +00:00
Owen Anderson
8c85061ee6 Move EVER MORE stuff over to LLVMContext. 
llvm-svn: 75703
 2009-07-14 23:09:55 +00:00
Owen Anderson
49226b1075 This started as a small change, I swear. Unfortunately, lots of things call the [I|F]CmpInst constructors. Who knew!? 
llvm-svn: 75200
 2009-07-09 23:48:35 +00:00
Duncan Sands
f7af13b2d4 Rename PaddedSize to AllocSize, in the hope that this 
will make it more obvious what it represents, and stop
it being confused with the StoreSize.

llvm-svn: 71349
 2009-05-09 07:06:46 +00:00
Bill Wendling
5ddde1a24c When we split a basic block, there's a default branch to the newly created BB. 
Delete this default branch, because we're going to generate our own.

llvm-svn: 66234
 2009-03-06 01:41:15 +00:00
Duncan Sands
bcdbfb63dc Rename getABITypeSize to getTypePaddedSize, as 
suggested by Chris.

llvm-svn: 62099
 2009-01-12 20:38:59 +00:00
Bill Wendling
3460a79979 Rename stackprotector_create intrinsic to stackprotector. 
llvm-svn: 59519
 2008-11-18 11:01:33 +00:00
Bill Wendling
485d094231 Remove the stackprotector_check intrinsic. Use a volatile load instead. 
llvm-svn: 59504
 2008-11-18 07:30:57 +00:00
Bill Wendling
3a50ecd70f - Use "moveAfter" instead of "remove/insert" of a basic block. 
- Use less indentation in coding.
- Shorten description.
- Update comments.
- Move code around

llvm-svn: 59496
 2008-11-18 05:32:11 +00:00
Bill Wendling
f5b264a64b Implement stack protectors as function attributes: "ssp" and "sspreq". 
llvm-svn: 59202
 2008-11-13 01:02:14 +00:00
Bill Wendling
d3c149eb90 Small simplification. Use the iterator already present as the insertion point. 
llvm-svn: 59008
 2008-11-10 23:38:59 +00:00
Bill Wendling
0421da9e9e - Make sure that we don't over-increment the iterator when going through the 
basic blocks.
- Minor code clean-up.

llvm-svn: 59002
 2008-11-10 21:13:10 +00:00
Bill Wendling
3fe9fef0da - Modify the stack protector algorithm so that the stack slot is allocated in 
LLVM IR code and not in the selection DAG ISel. This is a cleaner solution.

- Fix the heuristic for determining if protectors are necessary. The previous
  one wasn't checking the proper type size.

llvm-svn: 58824
 2008-11-07 01:23:58 +00:00
Bill Wendling
54a5c87823 Remove unneeded header file. 
llvm-svn: 58823
 2008-11-06 23:56:59 +00:00
Bill Wendling
70e06738b4 Don't build a vector of returns. Just modify the Function in the loop. 
llvm-svn: 58822
 2008-11-06 23:55:49 +00:00
Bill Wendling
1e6576e1e0 The size limit is for individual arrays. So if any array has more than 8 bytes 
in it, then emit stack protectors.

llvm-svn: 58819
 2008-11-06 22:18:44 +00:00
Bill Wendling
b6e2d60e7a - Rename stackprotector_{prologue,epilogue} to stackprotector_{create,check}. 
- Get rid of "HasStackProtector" in MachineFrameInfo.
- Modify intrinsics to tell which are doing what with memory.

llvm-svn: 58799
 2008-11-06 07:23:03 +00:00
Bill Wendling
489791a127 Adjust the stack protector heuristic to care about only arrays or calls to 
"alloca".

llvm-svn: 58792
 2008-11-06 02:38:58 +00:00
Bill Wendling
08905ed703 Implement the stack protector stack accesses via intrinsics: 
- stackprotector_prologue creates a stack object and stores the guard there.

- stackprotector_epilogue reads the stack guard from the stack position created
  by stackprotector_prologue.

- The PrologEpilogInserter was changed to make sure that the stack guard is
  first on the stack frame.

llvm-svn: 58791
 2008-11-06 02:29:10 +00:00
Bill Wendling
986e386794 Remove dead variable. 
llvm-svn: 58741
 2008-11-05 00:56:35 +00:00
Bill Wendling
8c86d20576 Simplify the allocated size calculation. 
llvm-svn: 58740
 2008-11-05 00:54:27 +00:00