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14251 Commits

Author SHA1 Message Date
John McCall
fd85fdee7c Change how tblgen generates attributes for intrinsics to use a single 
switch.  With this newfound organization, teach tblgen how not to give
all intrinsics the 'nounwind' attribute.  Introduce a new intrinsic,
llvm.eh.resume, which does not have this attribute.  Documentation and uses
to follow.

llvm-svn: 132252
 2011-05-28 06:31:34 +00:00
Charles Davis
6702c786ed When generating code for Win64 EH, emit StartProc and EndProc directives. 
llvm-svn: 132250
 2011-05-28 04:21:04 +00:00
Bruno Cardoso Lopes
6d5e369a10 Add support for ARM ldrexd/strexd intrinsics. They both use i32 register pairs 
to load/store i64 values. Since there's no current support to explicitly
declare such restrictions, implement it by using specific hardcoded register
pairs during isel.

llvm-svn: 132248
 2011-05-28 04:07:29 +00:00
Charles Davis
cf8d922dbe Stub out support for Win64-style exceptions. Note that this is merely using 
the Win64 EH mechanism to implement GCC-style exceptions. LLVM supports
hardly anything else at this point!

llvm-svn: 132234
 2011-05-27 23:47:32 +00:00
Rafael Espindola
2230168a0f Make size computation less brittle. 
llvm-svn: 132222
 2011-05-27 22:05:41 +00:00
Charles Davis
cb20ea9935 Add the suffix to the Win64 EH data sections' names if given. Add a test for 
this. XFAIL'd, because the COFF AsmParser can't handle .section yet.

llvm-svn: 132220
 2011-05-27 21:38:47 +00:00
Nadav Rotem
531aa71d22 Refactor getActionType and getTypeToTransformTo ; place all of the 'decision' 
code in one place. Re-apply 131534 and fix the multi-step promotion of integers.

llvm-svn: 132217
 2011-05-27 21:03:13 +00:00
Charles Davis
f835c87c83 Add a parameter to the Win64 EH section getters to get a section with a 
suffix (e.g. .xdata$myfunc). The suffix part isn't implemented yet, but
I'll get to it in the next patch.

Fix up all callers of the affected functions. Make them pass said suffix to
the function.

llvm-svn: 132205
 2011-05-27 19:09:24 +00:00
Charles Davis
5ebea6fc5f Start keeping track of where the various unwind instructions are in the prolog. 
Use them to calculate the offset inside the prolog. Emit this value when
emitting the unwind codes.

llvm-svn: 132177
 2011-05-27 03:25:01 +00:00
Chad Rosier
b87c4a6945 Renamed llvm.x86.sse42.crc32 intrinsics; crc64 doesn't exist. 
crc32.[8|16|32] have been renamed to .crc32.32.[8|16|32] and
crc64.[8|16|32] have been renamed to .crc32.64.[8|64].

llvm-svn: 132163
 2011-05-26 23:13:19 +00:00
Eric Christopher
94fbcd8d81 Comment cleanup. 
llvm-svn: 132162
 2011-05-26 22:54:27 +00:00
Charles Davis
a5045b7351 Fix definitions of UOP_SaveXMM128, UOP_SaveXMM128Big, and UOP_PushMachFrame 
to match Microsoft's definitions.

llvm-svn: 132112
 2011-05-26 05:24:15 +00:00
Charles Davis
0021487a8e Test .seh_startchained and .seh_endchained parsing. 
Rework how the MCWin64EHUnwindInfo instances are stored. Fix issues with
chained unwind areas exposed by the test that were related to this.

The ChainedParent field had the wrong address, because when the chained unwind
info was added, the addresses shifted around. Now we store the pointers to the
structures, which are now allocated from the MC heap.

llvm-svn: 132106
 2011-05-26 02:45:47 +00:00
Charles Davis
ede0f07dae Add tests for .seh_setframe and .seh_handlerdata parsing. Fix issues with 
them.

I had to add a special SwitchSectionNoChange method to MCStreamer just for
.seh_handlerdata. If this isn't OK, please let me know, and I'll find some
other way to fix .seh_handlerdata streaming.

llvm-svn: 132084
 2011-05-25 21:43:45 +00:00
Rafael Espindola
84604c0b6c Fix some issues Duncan found in the previous commit. 
I kept the reference to the ABI since that is the common case. The
-fno-asynchronous-unwind-tables option is a user controlled way of breaking
the ABI.

llvm-svn: 132053
 2011-05-25 12:54:08 +00:00
Frits van Bommel
271d62cbd3 Fix warning in the CMake build about redefining LLVM_PATH_XDOT_PY by making sure both definitions are identical. This used to produce warnings like 
In file included from .../llvm/trunk/tools/lto/LTOCodeGenerator.cpp:45:
In file included from .../llvm/trunk/include/llvm/Support/system_error.h:225:
.../include/llvm/Config/config.h:591:9: warning: 'LLVM_PATH_XDOT_PY' macro redefined
#define LLVM_PATH_XDOT_PY ".../bin/xdot.py"
        ^
.../include/llvm/Config/llvm-config.h:98:9: note: previous definition is here
#define LLVM_PATH_XDOT_PY ""
        ^
1 warning generated.

(Paths edited for clarity)

Note: This only affected people who had xdot.py installed.
llvm-svn: 132050
 2011-05-25 06:32:23 +00:00
Rafael Espindola
70213c7c5f Replace the -unwind-tables option with a per function flag. This is more 
LTO friendly as we can now correctly merge files compiled with or without
-fasynchronous-unwind-tables.

llvm-svn: 132033
 2011-05-25 03:44:17 +00:00
Charles Davis
1084ac5bb1 Implement the rest of the SEH directive-parsing methods in the COFFAsmParser. 
Add a size alignment check to the .seh_stackalloc directive parser. Add a
more descriptive error message to the .seh_handler directive parser.

Add methods to the TargetAsmInfo struct in support of all this.

llvm-svn: 131992
 2011-05-24 20:06:30 +00:00
Devang Patel
0b44360610 Remove dead code. 
llvm-svn: 131974
 2011-05-24 18:27:52 +00:00
Charles Davis
3ac82d9bb2 Add a method to TargetRegisterInfo to get the register number that the Win64 EH 
scheme uses internally. Implement it for x86 (the only architecture that LLVM
supports for which this matters right now).

llvm-svn: 131969
 2011-05-24 16:57:53 +00:00
Cameron Zwarich
e425894eaf Clean up the lazy initialization of DIBuilder a bit. 
llvm-svn: 131956
 2011-05-24 06:00:08 +00:00
Jakob Stoklund Olesen
222e83f44b Work around code generation bug in Visual Studio 2010. 
See http://llvm.org/pr9976 for details.

llvm-svn: 131954
 2011-05-24 03:20:56 +00:00
Cameron Zwarich
462b5db500 Make LoadAndStorePromoter preserve debug info and create llvm.dbg.values when 
promoting allocas to SSA variables. Fixes <rdar://problem/9479036>.

llvm-svn: 131953
 2011-05-24 03:10:43 +00:00
Chris Lattner
5fd8380a35 add a helper method to get the byval alignment of an argument. 
llvm-svn: 131883
 2011-05-22 23:57:23 +00:00
Charles Davis
a4187a96c9 Add methods to parse the SEH directives to the COFFAsmParser. Implement some 
of them, particularly the ones that don't take arguments. Also implement
.seh_proc and .seh_handler.

llvm-svn: 131866
 2011-05-22 21:12:15 +00:00
Frits van Bommel
df58ece78a Add a parameter to ConstantFoldTerminator() that callers can use to ask it to also clean up the condition of any conditional terminator it folds to be unconditional, if that turns the condition into dead code. This just means it calls RecursivelyDeleteTriviallyDeadInstructions() in strategic spots. It defaults to the old behavior. 
I also changed -simplifycfg, -jump-threading and -codegenprepare to use this to produce slightly better code without any extra cleanup passes (AFAICT this was the only place in -simplifycfg where now-dead conditions of replaced terminators weren't being cleaned up). The only other user of this function is -sccp, but I didn't read that thoroughly enough to figure out whether it might be holding pointers to instructions that could be deleted by this.

llvm-svn: 131855
 2011-05-22 16:24:18 +00:00
Chris Lattner
b2b8de15d8 another typo 
llvm-svn: 131854
 2011-05-22 15:44:02 +00:00
Chris Lattner
ddafd147a2 fix comment typo 
llvm-svn: 131853
 2011-05-22 15:34:37 +00:00
Chris Lattner
1520c4f4f0 Fix some minor typos and grammar. 
llvm-svn: 131835
 2011-05-22 04:44:48 +00:00
Charles Davis
d74119d139 Implement emission of all Win64 exception tables. Make the COFF streamer emit 
these tables.

llvm-svn: 131833
 2011-05-22 04:15:07 +00:00
Charles Davis
c23700bb65 Make the COFF streamer emit unwind info when processing a .seh_handlerdata 
directive.

Implement emission of Win64 EH unwind info.

Pull in <cassert> in MCWin64EH.h so it can use the assert() macro.

llvm-svn: 131832
 2011-05-22 03:01:05 +00:00
Chris Lattner
69a52dd280 random comment cleanups. 
llvm-svn: 131829
 2011-05-22 00:50:53 +00:00
Chris Lattner
03d83a7b9b remove StandardPasses, it has been replaced with PassManagerBuilder 
llvm-svn: 131827
 2011-05-22 00:30:45 +00:00
Chris Lattner
6e81571c48 add support for LTO passes. 
llvm-svn: 131820
 2011-05-22 00:14:20 +00:00
Charles Davis
49f650f80b Include DataTypes.h from this header to get the uint*_t types. 
llvm-svn: 131817
 2011-05-22 00:05:26 +00:00
Charles Davis
53b696daee Allow access to the .pdata and .xdata sections through the TargetAsmInfo 
class.

llvm-svn: 131816
 2011-05-22 00:03:24 +00:00
Chris Lattner
03847f8199 add an extension point mechanism that allow plugins to add stuff to 
the pass manager.

llvm-svn: 131814
 2011-05-21 23:50:37 +00:00
Nick Lewycky
0539f44b9f Add CreateLifetimeStart and CreateLifetimeEnd to the IRBuilder, with plans to 
use these soon.

llvm-svn: 131812
 2011-05-21 23:14:36 +00:00
Chris Lattner
d2e2d612c0 add a new PassManagerBuilder class to replace StandardPasses.h 
llvm-svn: 131807
 2011-05-21 20:39:42 +00:00
Chris Lattner
777808dcaf add a copy ctor to TargetLibraryInfo. 
llvm-svn: 131806
 2011-05-21 20:09:13 +00:00
Eli Friedman
58beee1262 PR7952: Make isa<> use the same logic as cast<>, so that they both work 
consistently.

llvm-svn: 131803
 2011-05-21 19:13:10 +00:00
Charles Davis
7f9c007dce A handler for a function in the Win64 EH scheme can be both an unwind handler 
and an exception handler. Handle that case.

Also, add an 'Emitted' member to the MCWin64EHUnwindInfo struct. It will be
needed later.

llvm-svn: 131791
 2011-05-21 15:57:49 +00:00
Andrew Trick
9f867fd2dc Have Program::Wait return -2 for crashed and timeouts instead of embedding 
info in the error message. Per Dan's request.

llvm-svn: 131780
 2011-05-21 00:56:46 +00:00
Charles Davis
989cc73ef3 Add .pdata and .xdata sections to the COFF TLOF implementation. 
llvm-svn: 131763
 2011-05-20 22:13:55 +00:00
Argyrios Kyrtzidis
d58ffb7e7d Add asserts in StringRef to make sure we avoid undefined behavior: 
-strlen should not be called with NULL. Also guarantee that StringRef's Length is 0 if Data is NULL.
-memcmp should not be called with NULL (even if size is 0)

Patch by Matthieu Monrocq!

llvm-svn: 131747
 2011-05-20 19:24:12 +00:00
Andrew Trick
3352db291f indvars: Prototyping Sign/ZeroExtend elimination without canonical IVs. 
No functionality enabled by default. Use -disable-iv-rewrite.
Extended IVUsers to keep track of the phi that represents the users' IV.
Added the WidenIV transform to replace a narrow IV with a wide IV
by doing a one-for-one replacement of IV users instead of expanding the
SCEV expressions. [sz]exts are removed and truncs are inserted.

llvm-svn: 131744
 2011-05-20 18:25:42 +00:00
Benjamin Kramer
63248bc95b Remove noisy semicolons. 
llvm-svn: 131724
 2011-05-20 09:20:25 +00:00
Rafael Espindola
c03bb178a0 Misc code refactorings: 
* Remove unnecessary arguments now that ForceExpAbs is a method.
* Use ForceExpAbs in EmitAbsValue.

llvm-svn: 131683
 2011-05-19 21:40:34 +00:00
Charles Davis
300a470f45 Implement the EndProlog Win64 EH method on the base MCStreamer. 
llvm-svn: 131679
 2011-05-19 21:24:54 +00:00
Charles Davis
925eab3fd7 Implement the Win64 EH prolog instruction methods on the base MCStreamer. 
I had to change the API slightly to avoid overloading issues.

llvm-svn: 131666
 2011-05-19 19:35:55 +00:00
Eli Friedman
1cbb521f21 Fix up the new StandardPasses to run the same scalarrepl passes as the old one. 
llvm-svn: 131665
 2011-05-19 19:14:54 +00:00
Joerg Sonnenberger
5efd18ca60 Reapply 131644 including the missing header changes: 
Introduce -fatal-assembler-warnings for the obvious purpose

llvm-svn: 131655
 2011-05-19 18:00:13 +00:00
Charles Davis
bb99a68546 Turns out GAS does have Win64 EH directives. (It also supports WinCE EH.) Make 
ours compatible with GAS.

In retrospect, I should have emailed binutils about this earlier. Thanks to
Kai Tietz for pointing out that GAS already had SEH directives.

llvm-svn: 131652
 2011-05-19 17:46:39 +00:00
Charles Davis
e6942fd10b Implement the StartChained and EndChained Win64 EH methods on MCStreamer. 
llvm-svn: 131629
 2011-05-19 04:04:13 +00:00
Francois Pichet
8c22442446 Fix the MSVC build. 
Use a set of overloaded functions instead of template function for CreatePassFn.

It seems that template deduction for functions type that differs only by return type doesn't work with MSVC. 

llvm-svn: 131624
 2011-05-19 02:54:11 +00:00
Charles Davis
2940df3099 Implement the StartProc and EndProc Win64 EH methods on the base MCStreamer. 
Based largely on Rafael Espindola's work on CFI. Other methods soon to follow.

llvm-svn: 131623
 2011-05-19 02:49:00 +00:00
Charles Davis
ce8694c82b Fix build issues with headers, which I discovered by actually using them. 
Also, convert all the inline functions on UnwindInfo into methods.

llvm-svn: 131622
 2011-05-19 02:47:23 +00:00
Charles Davis
3322d4dee8 Add a header patterned after MCDwarf.h for supporting Win64 exception handling 
under MC.

llvm-svn: 131593
 2011-05-18 22:48:24 +00:00
David Chisnall
ef3c74e551 Some better type safety enforcement in the standard pass list, along with some small tidies and some fixes for bugs that the stricter checking found. 
llvm-svn: 131592
 2011-05-18 22:46:02 +00:00
Eli Friedman
e1ee02ff3d Third pass at allowing plugins to modify default passes. This time with a tweak so that we don't depend on an uninitialized argument. 
llvm-svn: 131581
 2011-05-18 21:40:04 +00:00
Devang Patel
f1e313af0f Set debug location while setting insertion point. 
llvm-svn: 131575
 2011-05-18 20:58:47 +00:00
Charles Davis
48ea9389dc Add some more Win64 EH directives: 
- StartChained and EndChained delimit a chained unwind area, which can contain
  additional operations to be undone if an exception occurs inside of it.
- UnwindOnly declares that this function doesn't handle any exceptions. If it
  has a handler, it's an unwind handler instead of an exception handler.
- Lsda declares the location and size of the LSDA, which in the Win64 EH
  scheme is kept inside the UNWIND_INFO struct. Windows itself ignores the
  LSDA; it's used by the Language-Specific Handler (the "Personality Function"
  from DWARF).

llvm-svn: 131572
 2011-05-18 20:54:10 +00:00
Eli Friedman
530e34b4af Revert r131556; it's breaking buildbots/clang tests. 
llvm-svn: 131567
 2011-05-18 20:39:27 +00:00
David Chisnall
b2d7afdada Second pass at allowing plugins to modify default passes. This time without bonus inter-library dependencies. 
llvm-svn: 131556
 2011-05-18 19:00:41 +00:00
Duncan Sands
d3292b9f1e Revert commit 131534 since it seems to have broken several buildbots. 
Original log entry:
Refactor getActionType and getTypeToTransformTo ; place all of the 'decision'
code in one place.

llvm-svn: 131536
 2011-05-18 14:57:56 +00:00
Nadav Rotem
b7d689c706 Refactor getActionType and getTypeToTransformTo ; place all of the 'decision' 
code in one place.

llvm-svn: 131534
 2011-05-18 12:26:38 +00:00
Charles Davis
81fa5ec5c3 While thinking about how to know where the functions' boundaries are for 
the purposes of the Win64 EH tables, I realized we had no way to tell where
the function ends. (MASM bounds functions with PROC and ENDP keywords.)
Add a directive to delimit the end of the function, and rename the 'frame'
directive to more accurately reflect its duality with the new directive.

llvm-svn: 131522
 2011-05-18 04:47:22 +00:00
Bill Wendling
f4cb799615 Conditionalize the format of the GCOV files by target type. Darwin uses the 4.2 
format.

llvm-svn: 131503
 2011-05-17 23:05:13 +00:00
Jim Grosbach
5b691ebabf Frame indices are signed. Update MachineOperand methods accordingly. 
llvm-svn: 131475
 2011-05-17 18:29:21 +00:00
Jakob Stoklund Olesen
16f11212fc Teach LiveInterval::isZeroLength about null SlotIndexes. 
When instructions are deleted, they leave tombstone SlotIndex entries.
The isZeroLength method should ignore these null indexes.

This causes RABasic to sometimes spill a callee-saved register in the
abi-isel.ll test, so don't run that test with -regalloc=basic.  Prioritizing
register allocation according to spill weight can cause more registers to be
used.

llvm-svn: 131436
 2011-05-16 23:50:05 +00:00
Dan Gohman
9a55240376 Delete unused variables. 
llvm-svn: 131430
 2011-05-16 22:19:54 +00:00
Charles Davis
173b0d324a Add a method I forgot in the last commit. Don't worry, this one passed 
self-host :).

llvm-svn: 131421
 2011-05-16 21:13:58 +00:00
Eli Friedman
cb60e2293f Make fast-isel work correctly s/uadd.with.overflow intrinsics. 
llvm-svn: 131420
 2011-05-16 21:06:17 +00:00
Eli Friedman
5f1b7e4153 Basic fast-isel of extractvalue. Not too helpful on its own, given the IR clang generates for cases like this, but it should become more useful soon. 
llvm-svn: 131417
 2011-05-16 20:27:46 +00:00
Rafael Espindola
e0b15205c1 sets bit 0 of the function address of thumb function in .symtab 
("T is 1 if the target symbol S has type STT_FUNC and the
symbol addresses a Thumb instruction ;it is 0 otherwise."
from "ELF for the ARM Architecture" 4.7.1.2)

Patch by Koan-Sin Tan!

llvm-svn: 131406
 2011-05-16 16:17:21 +00:00
Zhongxing Xu
c520c46129 Remove redundant template partial specilization. 
llvm-svn: 131402
 2011-05-16 12:42:22 +00:00
Rafael Espindola
113d944ce4 Don't do tail calls in a function that call setjmp. The stack might be 
corrupted when setjmp returns again.

llvm-svn: 131399
 2011-05-16 03:05:33 +00:00
Charles Davis
900df11077 Add stub methods to MCStreamer for emitting Win64 exception-handling 
information.

llvm-svn: 131382
 2011-05-15 17:20:01 +00:00
Charles Davis
4b65b621f2 Get rid of extern "C" from the Win64 EH header. 
llvm-svn: 131381
 2011-05-15 17:09:26 +00:00
Charles Davis
d2f0eca76c Add a header containing definitions used to implement Win64 exception handling. 
llvm-svn: 131380
 2011-05-15 14:42:22 +00:00
Nick Lewycky
20b27eebdc Declare this function here so that it doesn't get C++ mangling. 
llvm-svn: 131379
 2011-05-15 07:20:34 +00:00
John McCall
d24d94c11c Add an operator+= for appending StringRefs onto std::strings. 
Previously this pattern would be compiled using an implicit conversion
to std::string.

llvm-svn: 131325
 2011-05-13 23:58:45 +00:00
Dylan Noblesmith
7181ae008c ExecutionEngine: push TargetMachine creation into clients (v2) 
In particular, into EngineBuilder. This should only impact
the private API between the EE and EB classes, not external
clients, since JITCtor and MCJITCtor are both protected members.

llvm-svn: 131317
 2011-05-13 21:51:29 +00:00
Dylan Noblesmith
2af2081287 ExecutionEngine: fix JIT/MCJIT selectTarget() duplication (v2) 
This prepares for making JITCtor/MCJITCtor take a
TargetMachine* directly from clients like EngineBuilder.

llvm-svn: 131316
 2011-05-13 21:36:16 +00:00
Rafael Espindola
95d9ad78ea Make codegen able to handle values of empty types. This is one way 
to fix PR9900. I will keep it open until sable is able to comment on it.

llvm-svn: 131294
 2011-05-13 15:18:06 +00:00
Julien Lerouge
b2c1721752 Fix a source of non determinism in FindUsedTypes, use a SetVector instead of a 
set.

rdar://9423996

llvm-svn: 131283
 2011-05-13 05:20:42 +00:00
Devang Patel
dd08ae41c6 Doug convinced me that DW_AT_APPLE_objc_complete_type is more appropriate name. 
s/DW_AT_APPLE_objc_class_extension/DW_AT_APPLE_objc_complete_type/g

llvm-svn: 131244
 2011-05-12 21:29:42 +00:00
Devang Patel
b865dd6a20 Let Objective-C front-end identify class extension, in dwarf output, using an attribute DW_AT_APPLE_objc_class_extension. 
llvm-svn: 131238
 2011-05-12 19:06:16 +00:00
Evan Cheng
5ff60c7364 Re-commit 131172 with fix. MachineInstr identity checks should check dead 
markers. In some cases a register def is dead on one path, but not on
another.

This is passing Clang self-hosting.

llvm-svn: 131214
 2011-05-12 00:56:58 +00:00
Andrew Trick
25d4fce092 Bugpoint support for miscompilations that result in a crash. 
This change allows bugpoint to pinpoint the "opt" pass and bitcode
segment responsible for a crash caused by miscompilation. At least it
works well for me now, without having to create any custom execution
wrappers.

llvm-svn: 131186
 2011-05-11 16:31:24 +00:00
Bill Wendling
453a924d29 Give the 'eh.sjlj.dispatchsetup' intrinsic call the value coming from the setjmp 
intrinsic call. This prevents it from being reordered so that it appears
*before* the setjmp intrinsic (thus making it completely useless).
<rdar://problem/9409683>

llvm-svn: 131174
 2011-05-11 01:11:55 +00:00
Bill Wendling
68a363dd78 Fix comment. 
llvm-svn: 131173
 2011-05-11 01:08:39 +00:00
Nick Lewycky
5a1035a0dc Revert r131155 for now. It makes VMCore depend on Analysis and Transforms 
headers.

llvm-svn: 131159
 2011-05-10 22:16:06 +00:00
David Chisnall
17ae92b2d8 Add support for plugins add passes to the default set of passes. The standard set of passes used by front ends can now be modified by LLVM plugins, without needing to modify any front ends. 
Still to do:

- Allow replacing / removing passes (infrastructure there, just needs an infrastructure exposed)
- Defining sets of passes to be added or removed as a group
- Extending the support to allow user-defined groups of optimisations
- Allow plugins to be specified for loading automatically (e.g. from plugins.conf or some similar mechanism)

Reviewed by Nick Lewycky.

llvm-svn: 131155
 2011-05-10 21:36:48 +00:00
Rafael Espindola
9b3e6a9cb4 Rename DwarfRequiresRelocationForStmtList to 
DwarfRequiresRelocationForSectionOffset as this is not specific to StmtList.

llvm-svn: 131148
 2011-05-10 20:35:05 +00:00
Rafael Espindola
92dc58fea6 Use .cfi_sections to put the unwind info in .debug_frame when possible. With 
this clang will use .debug_frame in, for example,
clang -g -c -m32 test.c
This matches gcc's behaviour. It looks like .debug_frame is a bit bigger
than .eh_frame, but has the big advantage of not being allocated.

llvm-svn: 131140
 2011-05-10 18:39:09 +00:00
Rafael Espindola
b7c942431f Add support for producing .deubg_frame sections. 
llvm-svn: 131121
 2011-05-10 03:54:12 +00:00
Rafael Espindola
3d5f7d1fc1 Factor some code into a new EmitFrames method. 
llvm-svn: 131119
 2011-05-10 03:14:15 +00:00
Rafael Espindola
c5f10dda05 Parsing and plumbing for .cfi_sections. 
llvm-svn: 131117
 2011-05-10 01:10:18 +00:00
Dan Gohman
392ab7a6ba Change a few std::maps to DenseMaps. 
llvm-svn: 131088
 2011-05-09 18:44:09 +00:00
Rafael Espindola
0baeced1f4 Don't force relaxation of AdvanceLoc instructions on OS X. gdb is happy with 
the smaller encoding and this cuts 270336 bytes from a release version of
clang and 1246272 bytes from a debug build.

llvm-svn: 131067
 2011-05-08 14:35:21 +00:00
Eli Friedman
f580be6fe3 PR9869: Add explicit destructor declarations to Operator subclasses, to allow 
compiling Operator.h with gcc 4.6 in C++0x mode.

llvm-svn: 131062
 2011-05-08 01:59:22 +00:00
Eli Friedman
f608aeaefa Fix comments per Duncan's review. 
llvm-svn: 131055
 2011-05-07 19:23:14 +00:00
Jakob Stoklund Olesen
0c88537b3d Revert ExecutionEngine patches, they either failed to build or broke unit tests. 
Please ensure the build is clean and tests are passing when recommitting.

llvm-svn: 131044
 2011-05-07 03:12:54 +00:00
Rafael Espindola
003a45810d Switch Darwin to the generic CIE/FDE printer. 
llvm-svn: 131031
 2011-05-06 22:29:04 +00:00
Dylan Noblesmith
a12e687660 ExecutionEngine: push TargetMachine creation into clients 
In particular, into EngineBuilder. This should only impact
the private API between the EE and EB classes, not external
clients, since JITCtor and MCJITCtor are both protected members.

llvm-svn: 131026
 2011-05-06 22:06:22 +00:00
Dylan Noblesmith
763e1abfba ExecutionEngine: fix JIT/MCJIT selectTarget() duplication 
This prepares for making JITCtor/MCJITCtor take a
TargetMachine* directly from clients like EngineBuilder.

llvm-svn: 131025
 2011-05-06 22:05:43 +00:00
Eli Friedman
12e590e760 Make the logic for determining function alignment more explicit. No functionality change. 
llvm-svn: 131012
 2011-05-06 20:34:06 +00:00
Rafael Espindola
ef239d2fdc Yet more dead code. 
llvm-svn: 130988
 2011-05-06 15:31:55 +00:00
Rafael Espindola
4228ece8fd Update comments. 
llvm-svn: 130987
 2011-05-06 15:28:56 +00:00
Rafael Espindola
9b57a8739e More dead code elimination. 
llvm-svn: 130985
 2011-05-06 15:22:26 +00:00
Rafael Espindola
59462d8ae3 Dead code elimination. 
llvm-svn: 130984
 2011-05-06 14:56:22 +00:00
Rafael Espindola
f109f01ec2 Remove the DwarfTable enum. 
llvm-svn: 130959
 2011-05-05 22:14:31 +00:00
Nick Lewycky
aed53f33f0 Fix typo. No functional change. 
llvm-svn: 130949
 2011-05-05 21:27:14 +00:00
Owen Anderson
35f6bae989 Allow FastISel of three-register-operand instructions. 
llvm-svn: 130934
 2011-05-05 17:59:04 +00:00
Hongbin Zheng
8785489968 Minor change: Fix the typo in RegionPass.h and RegionPass.cpp. 
llvm-svn: 130920
 2011-05-05 13:59:38 +00:00
Bill Wendling
7a13f3bde3 Remove a flag that would set the ".eh" symbol as .globl. MachO was the only one 
who used this flag, and it now emits CFI and doesn't emit this anymore. All
other targets left this flag "false".
<rdar://problem/8486371>

llvm-svn: 130918
 2011-05-05 06:49:15 +00:00
Mikhail Glushenkov
6a346f7333 llvmc: Make 'true' and 'false' instances of a 'Bool' class. 
llvm-svn: 130915
 2011-05-05 04:25:03 +00:00
Ted Kremenek
be5353a070 Add explicit 'unregister' method to CrashRecoveryConextCleanupRegistrar. 
llvm-svn: 130885
 2011-05-04 23:26:59 +00:00
Devang Patel
7f23f2aba6 If builder is initialized using an instruction as insertion point, then use the instruction's debug location as current debug location. 
llvm-svn: 130874
 2011-05-04 21:57:22 +00:00
Rafael Espindola
8346c59e6a Producing a DW_FORM_addr for DW_AT_stmt_list is probably correct, but 
it is both inefficient and unexpected by dwarfdump. Change to
a DW_FORM_data4.

While in here, change the predicate name to reflect that the position
is not really absolute (it is an offset), just that the linker needs a
relocation.

llvm-svn: 130846
 2011-05-04 17:44:06 +00:00
Bill Wendling
8495856e95 Remove dead intrinsics. 
llvm-svn: 130831
 2011-05-04 02:40:54 +00:00
Duncan Sands
7497273b12 Implement some basic simplifications involving min/max, for example 
max(a,b) >= a -> true.  According to my super-optimizer, these are
by far the most common simplifications (of the -instsimplify kind)
that occur in the testsuite and aren't caught by -std-compile-opts.

llvm-svn: 130780
 2011-05-03 19:53:10 +00:00
Bruno Cardoso Lopes
9dd575e4a9 Add a few ARM coprocessor intrinsics. Testcases included 
llvm-svn: 130763
 2011-05-03 17:29:22 +00:00
Bob Wilson
b718da182d Fix a comment. 
llvm-svn: 130761
 2011-05-03 17:22:56 +00:00
Dan Gohman
7beb845bab Add an unfolded offset field to LSR's Formula record. This is used to 
model constants which can be added to base registers via add-immediate
instructions which don't require an additional register to materialize
the immediate.

llvm-svn: 130743
 2011-05-03 00:46:49 +00:00
Duncan Sands
a897cad003 Forgot to commit the changes to this file. 
llvm-svn: 130695
 2011-05-02 16:34:19 +00:00
Chandler Carruth
c83eb00361 Remove an unused variable in NDEBUG (found with -Wunused-variable). 
llvm-svn: 130688
 2011-05-02 05:49:01 +00:00
Jakob Stoklund Olesen
e0ec7ed462 Add a SlotIndexes::insertMachineInstrInMaps to insert the instruction after any null indexes. 
This makes a difference if a live interval is referring to a deleted
instruction. It can be important to insert an instruction before or after a
deleted instruction to avoid interference.

llvm-svn: 130686
 2011-05-02 05:29:56 +00:00
Chris Lattner
c04013dd48 enhance memcpyopt to obey -fno-builtin and friends. This addresses a 
problem reported on cfe-dev.

llvm-svn: 130661
 2011-05-01 18:27:11 +00:00
NAKAMURA Takumi
3788ada5db Windows/DynamicLibrary.inc: Clean up ELM_Callback. We may check the decl instead of the versions of individual libraries. 
autoconf: Add checking ELM_Callback decl for mingw32 and mingw-w64.
cmake/config-ix.cmake: Add checking ELM_Callback decl for win32.

llvm-svn: 130657
 2011-05-01 13:29:49 +00:00
Rafael Espindola
eb5d0cb4f4 GCC uses a different encoding of pointers in the FDE when using 
-fno-dwarf2-cfi-asm. Implement the same behavior.

llvm-svn: 130637
 2011-05-01 04:49:54 +00:00
Rafael Espindola
2f2c3bf31f Simplify the handling of pcrel relocations on ELF. Now we do the right thing 
for all symbol differences and can drop the old EmitPCRelSymbolValue
method.

This also make getExprForFDESymbol on ELF equal to the one on MachO, and it
can be made non-virtual.

llvm-svn: 130634
 2011-05-01 03:50:49 +00:00
Jakob Stoklund Olesen
4ec9e1c33a Avoid using stale entries form the sibling value map. 
This could happen when trying to use a value that had been eliminated after dead
code elimination and folding loads.

llvm-svn: 130597
 2011-04-30 06:42:21 +00:00
Rafael Espindola
7901d3790e Add all the plumbing needed for MC to expand cfi to the old tables in 
the final assembly. It is the same technique used when targeting
assemblers that don't support .loc.

llvm-svn: 130587
 2011-04-30 03:44:37 +00:00
Rafael Espindola
17e6a392af Implement MCAsmStreamer::EmitDwarfAdvanceFrameAddr. 
llvm-svn: 130585
 2011-04-30 03:21:04 +00:00
Devang Patel
60fb94e8bf Assing line number info to new PHIs created by SSA updater. 
llvm-svn: 130551
 2011-04-29 22:28:59 +00:00
Daniel Dunbar
c52dfd4349 MCExpr: Add FindAssociatedSection, which attempts to mirror the 'as' semantics 
that associate sections with expressions.

llvm-svn: 130517
 2011-04-29 18:00:03 +00:00
Rafael Espindola
16b23d9ff7 Factor some code to needsCFIMoves. Avoid printing moves when we don't have to. 
llvm-svn: 130501
 2011-04-29 14:14:06 +00:00
Chris Lattner
52b19aa2b5 add a missing operator that caused us to have to use (*MIB).foo everywhere. 
llvm-svn: 130473
 2011-04-29 05:24:07 +00:00
Rafael Espindola
a664fdf4cd Add an alternative implementation of CIE and FDE emission that outputs them 
in the same order as the one in CodeGen.

llvm-svn: 130471
 2011-04-29 02:42:28 +00:00
Rafael Espindola
be5cb08cf8 Add the getExprForFDESymbol method that responsible for computing the 
expressions used in the FDE to refer to symbols.

llvm-svn: 130437
 2011-04-28 21:04:39 +00:00
Ted Kremenek
16f206d185 Add MemoryBuffer::getBufferKind() to report whether a memory buffer uses malloc'ed or mmap'ed memory. This is for performance analysis. 
llvm-svn: 130432
 2011-04-28 20:34:18 +00:00
Lenny Maiorani
1b1a9860d1 Remove bounded StringRef::compare() since nothing but Clang SA was using it and it is just as easy to use StringRef::substr() preceding StringRef::compare() to achieve the same thing. 
llvm-svn: 130430
 2011-04-28 20:20:12 +00:00
Rafael Espindola
f75a67d261 Add a getExprForPersonalitySymbol method to MCAsmInfo. Use it when 
converting the symbol passed to .cfi_personality into bytes is the file.

llvm-svn: 130400
 2011-04-28 16:09:09 +00:00
Rafael Espindola
4f9a76ab0b Mark the EH symbol global or weak if the corresponding function is. 
llvm-svn: 130397
 2011-04-28 12:50:37 +00:00
Jay Foad
97fa854251 Fix typos in comments. 
llvm-svn: 130396
 2011-04-28 09:12:47 +00:00
Chandler Carruth
c01a726544 Fix more -Wnon-pod-memset warnings. 
llvm-svn: 130392
 2011-04-28 08:17:08 +00:00
Chris Lattner
594c4c5823 teach GVN to widen integer loads when they are overaligned, when doing an 
wider load would allow elimination of subsequent loads, and when the wider
load is still a native integer type.  This eliminates a ton of loads on 
various benchmarks involving struct fields, though it is somewhat hobbled
by clang not being very aggressive about field alignment.

This is yet another step along the way towards resolving PR6627.

llvm-svn: 130390
 2011-04-28 07:29:08 +00:00
Eric Christopher
bea4df9acc Let the immediate leaf pattern take transforms and switch the signed 
immediate patterns in arm to using the pattern.

Handles rdar://9299434

llvm-svn: 130386
 2011-04-28 05:49:04 +00:00