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Author SHA1 Message Date
Rafael Espindola
c74e8fda1f Remove DwarfRegNum from the individual bits of the condition register. 
These should be DW_OP_bit_piece of CR (64).

llvm-svn: 132192
 2011-05-27 16:15:27 +00:00
Rafael Espindola
a275f4cfc7 Remove DwarfRegNum from CARRY. I should be encoded with DW_OP_bit_piece. 
llvm-svn: 132190
 2011-05-27 16:01:08 +00:00
Charles Davis
01cde4d080 Assorted fixes for Win64 EH unwind info emission: 
- Flip order of bitfields. This gets our output matching GAS.
- Handle case where the end of the prolog wasn't specified.
- If the resulting unwind info struct is less than 8 bytes, pad to 8 bytes.

Add a test for the latter two.

llvm-svn: 132188
 2011-05-27 15:10:25 +00:00
Rafael Espindola
7e68d3bf57 Remove dwarf numbers from subregs. We should use DW_OP_bit_piece to 
refer to them.

I tested this with both check-all and the gdb testsuite.

llvm-svn: 132187
 2011-05-27 15:08:24 +00:00
Benjamin Kramer
5b491b9d0e InstCombine: Make switch folding with equality compares more aggressive by trying instsimplify on the arm where we know the compared value. 
Stuff like "x == y ? y : x&y" now folds into "x&y".

llvm-svn: 132185
 2011-05-27 13:00:16 +00:00
Cameron Zwarich
a9c418b1c3 Fix PR10029 - VerifyCoalescing failure on patterns_dfa.c of 445.gobmk. 
llvm-svn: 132181
 2011-05-27 05:04:51 +00:00
Charles Davis
028e424cf3 Add a test for Win64 EH unwind information emission. 
llvm-svn: 132180
 2011-05-27 03:54:43 +00:00
Eric Christopher
0e12efbed1 Make the branch encoding for tBcc more obvious that it's a 4-byte opcode 
followed by a conditional and imm8.

llvm-svn: 132179
 2011-05-27 03:50:53 +00:00
Eric Christopher
cfce589451 Fix comment. 
llvm-svn: 132178
 2011-05-27 03:46:51 +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
Charles Davis
f64d56f9e2 Add missing break statements. Align UNWIND_INFO and RUNTIME_FUNCTION structs 
to 4 bytes.

I'm surprised no one caught the missing break statements.

llvm-svn: 132176
 2011-05-27 02:43:19 +00:00
Charles Davis
823e8a90ce My attempt at fixing the leak reported by the valgrind buildbots. Valgrind will 
still report leaks, but they're spurious now. Valgrind cannot peer into
std::vector objects--or any dynamic array, for that matter--because it doesn't
know how big the array is.

llvm-svn: 132174
 2011-05-27 02:01:08 +00:00
Charles Davis
32b363ded1 Fix inverted conditional in SaveReg and SaveXMM. Err when the frame pointer is 
already defined, and err when the PushMachFrame operation isn't the first
operation (if specified at all).

llvm-svn: 132173
 2011-05-27 01:42:17 +00:00
Eli Friedman
d619bcd565 One more debug line number miss in instcombine (although the code in question isn't actually in instcombine). 
llvm-svn: 132170
 2011-05-27 01:00:36 +00:00
Dan Gohman
0181c67669 Fix copy+pastos. 
llvm-svn: 132168
 2011-05-27 00:36:31 +00:00
Eli Friedman
6937c422a0 Final step of instcombine debuginfo; switch a couple more places over to InsertNewInstWith, and use setDebugLoc for the cases which can't be easily handled by the automated mechanisms. 
llvm-svn: 132167
 2011-05-27 00:19:40 +00:00
Chandler Carruth
6a41ac0d30 Fix warning about || and && without explicit grouping. 
This looks like it flagged an actual bug. Devang, please review. I added
the parentheses that change behavior, but make the behavior more closely
match commit log's intent.

llvm-svn: 132165
 2011-05-26 23:37:58 +00:00
Devang Patel
5e3f883ddf Do not insert anything after terminator. 
llvm-svn: 132164
 2011-05-26 23:16:48 +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
Devang Patel
c67e8c5d45 Do not move DBG_VALUE in middle of PHI nodes. 
llvm-svn: 132161
 2011-05-26 22:43:14 +00:00
Devang Patel
52e803e053 If llvm.dbg.value and the value instruction it refers to are far apart then iSel may not be able to find corresponding Node for llvm.dbg.value during DAG construction. Make iSel's life easier by removing this distance between llvm.dbg.value and its value instruction. 
llvm-svn: 132151
 2011-05-26 21:51:06 +00:00
Devang Patel
177dbe2de1 Add comment. 
llvm-svn: 132149
 2011-05-26 21:49:28 +00:00
Devang Patel
e0b7ab9296 During branch folding avoid inserting redundant DBG_VALUE machine instructions. 
llvm-svn: 132148
 2011-05-26 21:47:59 +00:00
Akira Hatanaka
71839b355d Use MachineFrameInfo::hasCalls instead of MipsFunctionInfo::hasCall to check if 
a function has any function calls.

llvm-svn: 132140
 2011-05-26 20:30:31 +00:00
Rafael Espindola
a77d692299 Fix some dwarf register numbers. 
llvm-svn: 132136
 2011-05-26 19:25:47 +00:00
Galina Kistanova
ceabe8c579 Make few ExecutionEngine tests XFAIL for ARM, since ExecutionEngine is broken for ARM, please remove the following XFAIL when it will be fixed. 
llvm-svn: 132135
 2011-05-26 19:17:14 +00:00
Rafael Espindola
0395db684a Fix LTO builds with xcode 4. 
llvm-svn: 132132
 2011-05-26 18:59:54 +00:00
Akira Hatanaka
5bfbea9ef2 Add support for C++ exception handling. 
llvm-svn: 132131
 2011-05-26 18:59:03 +00:00
Eric Christopher
4fc5b88850 Reorganize these slightly according to operand type. 
llvm-svn: 132128
 2011-05-26 18:22:26 +00:00
Akira Hatanaka
5a8bd76f99 Set HasSetDirective to true. 
llvm-svn: 132127
 2011-05-26 18:16:18 +00:00
Eli Friedman
15dc009422 Fix test on Windows. 
llvm-svn: 132126
 2011-05-26 18:00:32 +00:00
Charles Davis
4becdc727e Revert r132111. I built Release (without Asserts), so I didn't know about the 
assert that prevented setting alignment on section creation.

llvm-svn: 132113
 2011-05-26 05:35:55 +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
44fb280873 Align Win64 EH Table sections to 4 bytes. 
llvm-svn: 132111
 2011-05-26 05:19:54 +00:00
Charles Davis
cf332d9ff7 Add a test for the chained directives that I forgot last time. 
llvm-svn: 132110
 2011-05-26 05:17:43 +00:00
Francois Pichet
3d8581cca9 Fix MSVC warning regarding mkdir function usage. 
llvm-svn: 132109
 2011-05-26 04:55:20 +00:00
Stuart Hastings
837a958ff6 Reverting 132105: it broke some LLVM-GCC DejaGNU tests. 
llvm-svn: 132108
 2011-05-26 04:09:49 +00:00
Cameron Zwarich
9c871755b6 Mark tBX as an indirect branch rather than a return. 
llvm-svn: 132107
 2011-05-26 03:41:12 +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
Stuart Hastings
e704bfb21e Correctly handle a one-word struct passed byval on x86_64. 
rdar://problem/6920088

llvm-svn: 132105
 2011-05-26 02:44:56 +00:00
Andrew Trick
0577c5768b indvars: incremental fixes for -disable-iv-rewrite and testcases. 
Use a proper worklist for use-def traversal without holding onto an
iterator. Now that we process all IV uses, we need complete logic for
resusing existing derived IV defs. See HoistStep.

llvm-svn: 132103
 2011-05-26 00:46:11 +00:00
Jakob Stoklund Olesen
6c654330dc 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
Eli Friedman
93ffb875ad 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
3f49cbeb37 Define WeakRefDirective. 
llvm-svn: 132098
 2011-05-25 23:30:30 +00:00
Eli Friedman
5cd755549b PR9998: ashr exact %x, 31 is not equivalent to sdiv exact %x, -2147483648. 
llvm-svn: 132097
 2011-05-25 23:26:20 +00:00
Devang Patel
7e814e1e36 Remove unused statistical counter. 
llvm-svn: 132087
 2011-05-25 21:55:40 +00:00
Cameron Zwarich
9c19995747 Convert tBX_CALL / tBXr9_CALL to actual pseudoinstructions. 
llvm-svn: 132086
 2011-05-25 21:53:50 +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
Eric Christopher
e02bd15dbc Clean up comment a bit. 
llvm-svn: 132083
 2011-05-25 21:19:19 +00:00