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Author SHA1 Message Date
Eli Friedman
df96819daf Skip extra copy from aggregate where it isn't necessary; rdar://problem/8139919 . This shouldn't make much of a difference at -O3, but should substantially reduce the number of generated memcpy's at -O0. 
Originally r130717, but was backed out due to an ObjC regression.

llvm-svn: 132102
 2011-05-26 00:10:27 +00:00
Jakob Stoklund Olesen
25d5745cc5 Add a RAGreedy::canEvict function. 
This doesn't change functionality (much), but it allows for a more fine-grained
eviction policy. The current policy only compares spill weights, and that is not
always the best thing to do.  Spill weights are designed to serve linear scan,
and they don't consider live range splitting.

Add a mechanism so canEvict() can request that a live range be evicted and
split/spilled. This is to avoid infinite eviction loops.

llvm-svn: 132101
 2011-05-25 23:58:36 +00:00
Ted Kremenek
4c5d2888f4 static analyzer: when conservatively evaluating functions, don't invalidate the values of globals when the called function is strlen. 
llvm-svn: 132100
 2011-05-25 23:57:29 +00:00
Eli Friedman
c70355195c Rewrite fast-isel integer cast handling to handle more cases, and to be simpler and more consistent. 
The practical effects here are that x86-64 fast-isel can now handle trunc from i8 to i1, and ARM fast-isel can handle many more constructs involving integers narrower than 32 bits (including loads, stores, and many integer casts).

rdar://9437928 .

llvm-svn: 132099
 2011-05-25 23:49:02 +00:00
Akira Hatanaka
fa63d3096d Define WeakRefDirective. 
llvm-svn: 132098
 2011-05-25 23:30:30 +00:00
Eli Friedman
865866e7fe PR9998: ashr exact %x, 31 is not equivalent to sdiv exact %x, -2147483648. 
llvm-svn: 132097
 2011-05-25 23:26:20 +00:00
Alexis Hunt
119c10ef23 Update our diagnostics to properly account for move operations. 
llvm-svn: 132096
 2011-05-25 23:16:36 +00:00
Johnny Chen
b0b8853a2e Add a little spice to the script to allow us to specify a function name to break at and to disassemble. 
Usage: disasm.py [-n name] executable-image
       By default, it breaks at and disassembles the 'main' function.
llvm-svn: 132090
 2011-05-25 22:29:23 +00:00
Alexis Hunt
92a0adf05f Fix a minor thinko that leads to a crash if PatternDecl is null but 
Pattern is not. Thanks Nick for catching this!

llvm-svn: 132089
 2011-05-25 22:02:25 +00:00
Johnny Chen
2dda91690f Add a little twist to the disasm.py script so that it is possible to terminate the inferior process 
by entering 'Ctrl-D' or 'quit'.

llvm-svn: 132088
 2011-05-25 22:01:16 +00:00
Devang Patel
84b64a3e92 Remove unused statistical counter. 
llvm-svn: 132087
 2011-05-25 21:55:40 +00:00
Cameron Zwarich
a946f476d3 Convert tBX_CALL / tBXr9_CALL to actual pseudoinstructions. 
llvm-svn: 132086
 2011-05-25 21:53:50 +00:00
Charles Davis
2f6ecea19d 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
Eric Christopher
8f2cd0254d Clean up comment a bit. 
llvm-svn: 132083
 2011-05-25 21:19:19 +00:00
Johnny Chen
2cf62497b3 Modified to use SBTarget.LaunchSimple() API. 
llvm-svn: 132082
 2011-05-25 20:56:32 +00:00
Eric Christopher
8c5e4192e6 Implement the 'm' modifier. Note that it only works for memory operands. 
Part of rdar://9119939

llvm-svn: 132081
 2011-05-25 20:51:58 +00:00
Alexis Hunt
fcaeae4929 Implement a little bit of cleanup and a lot more of the base work 
behind implicit moves. We now correctly identify move constructors and
assignment operators and update bits on the record correctly. Generation
of implicit moves (declarations or definitions) is not yet supported.

llvm-svn: 132080
 2011-05-25 20:50:04 +00:00
Johnny Chen
9a26f0f260 Use built-in truth value testing. 
llvm-svn: 132079
 2011-05-25 20:48:29 +00:00
Johnny Chen
26fc16b032 Use built-in truth value testing. 
llvm-svn: 132078
 2011-05-25 20:47:27 +00:00
David Chisnall
e4e5c0f219 Remove bitcast to incorrect type. 
llvm-svn: 132077
 2011-05-25 20:33:17 +00:00
Akira Hatanaka
f1412e4d2f Remove MipsTargetLowering::LowerFP_TO_SINT. Patterns for fp_to_sint have already 
been defined in MipsInstrFPU.td.

llvm-svn: 132076
 2011-05-25 20:08:05 +00:00
Akira Hatanaka
44eba3ac49 Custom-lower FCOPYSIGN nodes. 
llvm-svn: 132074
 2011-05-25 19:32:07 +00:00
Eli Friedman
5bbb75655b Prepare ARMFastISel::SelectSIToFP for getRegForValue returning registers for i8 and i16 values. 
llvm-svn: 132073
 2011-05-25 19:09:45 +00:00
Johnny Chen
3cd1e55103 Convert these two modules to use the compact truth value testing as well. 
llvm-svn: 132072
 2011-05-25 19:06:18 +00:00
Evan Cheng
9605a698b0 Simplify r132022 based on Cameron's feedback. 
llvm-svn: 132071
 2011-05-25 18:17:13 +00:00
Akira Hatanaka
d72cc55fcc Update MaxCallFrameSize regardless of the relocation model selected. 
llvm-svn: 132070
 2011-05-25 18:08:32 +00:00
Greg Clayton
60d4d9eb81 Bumping Xcode project versions for lldb-55 and debugserver-139. 
llvm-svn: 132067
 2011-05-25 17:59:00 +00:00
Greg Clayton
1cbc52cd64 Added some comments. 
llvm-svn: 132066
 2011-05-25 17:56:20 +00:00
Akira Hatanaka
92a26d4e18 Change initial value of MaxCallFrameSize. MipsFI::getMaxCallFrameSize() should 
return 0 if there are no function calls made. 

llvm-svn: 132065
 2011-05-25 17:52:48 +00:00
Douglas Gregor
6c6e6761b2 Properly align UnaryTransformType when allocating it 
llvm-svn: 132064
 2011-05-25 17:51:54 +00:00
Akira Hatanaka
46662e0f91 Coding style fixes. Added comments. 
llvm-svn: 132063
 2011-05-25 17:32:06 +00:00
Francois Pichet
85ec52125b Remove unused OpcodeMask enumerator. 
llvm-svn: 132062
 2011-05-25 17:02:53 +00:00
Francois Pichet
f83114dceb Fix 3 MSVC warnings: 
'void (__cdecl *)()' differs in parameter lists from 'void (__cdecl *)(void)'

atexit really expects a "void f(void)" function.

llvm-svn: 132061
 2011-05-25 16:32:33 +00:00
Ted Kremenek
848c3ab60a Update checker build to checker-257. 
llvm-svn: 132060
 2011-05-25 16:30:14 +00:00
Francois Pichet
2e11f5df3d Disable MSVC warning about runtime stack overflow for DebugOverflowStack. 
llvm-svn: 132059
 2011-05-25 16:15:03 +00:00
Francois Pichet
7e401dbe03 Fix MSVC warning: <unsafe use of type 'bool' in operation> 
llvm-svn: 132058
 2011-05-25 16:07:10 +00:00
Francois Pichet
58b09c9366 Fix MSVC warning: "is out of range for enum constant" 
MSVC doesn't support 64 bit enum. 
OpcodeMask is not used anywhere in the code base.

llvm-svn: 132057
 2011-05-25 15:58:10 +00:00
Rafael Espindola
33dacdfe66 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
Francois Pichet
8f981d5964 Add support for Microsoft __if_exists, __if_not_exists extension at class scope. 
Example:

typedef int TYPE;
class C {
  __if_exists(TYPE) {
     TYPE a;
  }
  __if_not_exists(TYPE) {
     this will never be parsed.
  }
};

llvm-svn: 132052
 2011-05-25 10:19:49 +00:00
Frits van Bommel
308a534431 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
Ted Kremenek
86d49ce20c Teach analyzer about cf_returns_not_retained for C functions. 
llvm-svn: 132049
 2011-05-25 06:29:39 +00:00
Ted Kremenek
8e2c9b0180 Enhance retain/release checker to flag warnings when functions returning CG types do not follow the Core Foundation naming conventions. 
llvm-svn: 132048
 2011-05-25 06:19:45 +00:00
Argyrios Kyrtzidis
0e37afa15e A StringRef-ication of the DiagnosticIDs API and internals. 
Patch by Matthieu Monrocq with tweaks by me to avoid StringRefs in the static
diagnostic data structures, which resulted in a huge global-var-init function.

Depends on llvm commit r132046.

llvm-svn: 132047
 2011-05-25 05:05:01 +00:00
Argyrios Kyrtzidis
0246d63715 [tablegen] A couple of changes to ClangDiagnosticEmmitter. 
-Emit an empty warning option as string ("") instead of 0.
-For diagnostic names also emit the size of the string.

llvm-svn: 132046
 2011-05-25 05:04:22 +00:00
Charles Davis
828b00c0e1 Add tests for .seh_savereg and .seh_savexmm parsing. Once again, fix the 
buggy methods that parse these directives.

llvm-svn: 132045
 2011-05-25 04:51:25 +00:00
Cameron Zwarich
a51604e511 Restore an accidentally removed comment. 
llvm-svn: 132044
 2011-05-25 04:48:17 +00:00
Cameron Zwarich
6b66ee1865 Move some code to a more logical place. 
llvm-svn: 132043
 2011-05-25 04:45:29 +00:00
Cameron Zwarich
3088e0a179 Make tTAILJMPr/tTAILJMPrND emit a tBX without a preceding MOV of PC to LR. This 
fixes <rdar://problem/9495913>

llvm-svn: 132042
 2011-05-25 04:45:27 +00:00
Cameron Zwarich
310b3472ec Change the order of tBX's operands so that the predicate operands come after the 
target register, matching BX. I filed this bug because I was confused at first:

PR10007 - ARM branch instructions have inconsistent predicate operand placement
<http://llvm.org/bugs/show_bug.cgi?id=10007>

llvm-svn: 132041
 2011-05-25 04:45:23 +00:00
Cameron Zwarich
012247e60c Rename tBX_Rm to tBX. 
llvm-svn: 132040
 2011-05-25 04:45:20 +00:00