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47358 Commits

Author SHA1 Message Date
Jakob Stoklund Olesen
394d198d2e Add SplitAnalysis::getNumLiveBlocks(). 
It is important that this function returns the same number of live blocks as
countLiveBlocks(CurLI) because live range splitting uses the number of live
blocks to ensure it is making progress.

This is in preparation of supporting duplicate UseBlock entries for basic blocks
that have a virtual register live-in and live-out, but not live-though.

llvm-svn: 132244
 2011-05-28 02:32:57 +00:00
Akira Hatanaka
45b3f52c41 Change the set of callee-saved registers for non-MIPS32 architectures specified 
in MipsRegisterInfo::getCalleeSavedRegs so that both registers paired for a
double precision register get saved.

 

llvm-svn: 132243
 2011-05-28 01:41:05 +00:00
Eric Christopher
000dd7d0e6 Implement the 'M' output modifier for arm inline asm. This is fairly 
register allocation dependent and will occasionally break. WIP in the
register allocator to model paired/etc registers.

rdar://9119939

llvm-svn: 132242
 2011-05-28 01:40:44 +00:00
Akira Hatanaka
1590e4eab1 Define a wrapper node for target constant nodes (tglobaladdr, etc.). 
Need this to prevent emitting illegal conditional move instructions. 

llvm-svn: 132240
 2011-05-28 01:07:07 +00:00
Devang Patel
93e78e996f Select DW_AT_const_value size based on global variable size. 
llvm-svn: 132239
 2011-05-28 00:39:18 +00:00
Rafael Espindola
707fa44bc0 Add 132187 back now that the real problem is fixed. 
llvm-svn: 132238
 2011-05-28 00:24:37 +00:00
Rafael Espindola
386c4259db Fix the root cause of the bootstrap failure: 
There was no way to check if a given register/mode pair was valid. We now return
an error code (-2) instead of asserting. If anyone thinks that an assert
at this point  is really needed, we can autogen a hasValidDwarfRegNum instead.

llvm-svn: 132236
 2011-05-28 00:13:01 +00:00
Cameron Zwarich
cd3c1b5829 Fix the remaining atomic intrinsics to use the right register classes on Thumb2, 
and add some basic tests for them.

llvm-svn: 132235
 2011-05-27 23:54:00 +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
Bruno Cardoso Lopes
93eae0fd19 ARM asm parser wasn't able to parse a "mov" instruction while in Thumb 
mode (only the "mov.w" variant). Now, when parsing "mov" in thumb mode,
default to the Thumb 1 versions/encodings.

llvm-svn: 132233
 2011-05-27 23:46:09 +00:00
Rafael Espindola
8ed6285c8d It looks like 132187 might have broken the llvm-gcc bootstrap. Revert while I check. 
llvm-svn: 132230
 2011-05-27 23:36:02 +00:00
Cameron Zwarich
ded03d4e24 Add a GR32_NOREX_NOSP register class and fix a bug where getMatchingSuperRegClass() 
was saying that the matching superregister class of GR32_NOREX in GR64_NOREX_NOSP
is GR64_NOREX, which drops the NOSP constraint. This fixes PR10032.

llvm-svn: 132225
 2011-05-27 22:26:04 +00:00
Rafael Espindola
9ce5cebde6 Fix a regression I recently introduced by removing DwarfRegNum of 
subregisters:

When a value is in a subregister, at least report the location as being
the superregister. We should extend the .td files to encode the bit
range so that we can produce a DW_OP_bit_piece.

llvm-svn: 132224
 2011-05-27 22:15:01 +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
Eli Friedman
fe707571fc Attempt to preserve debug line info in LICM; as the comment in the code says, it's hard to pick good line numbers for this transformation, but something is better than nothing. 
rdar://9143729

llvm-svn: 132215
 2011-05-27 20:31:51 +00:00
Evan Cheng
0fcb465bab Don't use movw / movt for iOS static codegen for now to workaround some tools issues. rdar://9514789 
llvm-svn: 132211
 2011-05-27 20:11:27 +00:00
Chad Rosier
f2b2b472cc CRC32 intrinsics were renamed at revision 132163. This submission 
fixes aliasing issues with the old and new names as well as adds test
cases for the auto-upgrader.
Fixes rdar 9472944.

llvm-svn: 132207
 2011-05-27 19:38:10 +00:00
Devang Patel
2872ac051d Keep this simple. Use DIType to get signness and size of a type. Based on size, select appropraite form. 
llvm-svn: 132206
 2011-05-27 19:13:26 +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
Dan Gohman
20949164a3 Update this comment. 
llvm-svn: 132202
 2011-05-27 18:42:33 +00:00
Eli Friedman
1062ba1e1f Don't sink or hoist debug info instrinsics; it isn't useful. This also prevents LICM sinking from erasing debug intrinsics which don't dominate any exit block of the loop. 
rdar://9143943 .

llvm-svn: 132201
 2011-05-27 18:37:52 +00:00
John McCall
2f479c4d42 Fix the inliner to maintain the current de facto invoke semantics: 
- the selector for the landing pad must provide all available information
    about the handlers, filters, and cleanups within that landing pad
  - calls to _Unwind_Resume must be converted to branches to the enclosing
    lpad so as to avoid re-entering the unwinder when the lpad claimed it
    was going to handle the exception in some way
This is quite specific to libUnwind-based unwinding.  In an effort to not
interfere too badly with other unwinders, and with existing hacks in frontends,
this only triggers on _Unwind_Resume (not _Unwind_Resume_or_Rethrow) and does
nothing with selectors if it cannot find a selector call for either lpad.

llvm-svn: 132200
 2011-05-27 18:34:38 +00:00
Jakob Stoklund Olesen
021b1ff0c7 Delete MethodBodies that only filtered reserved registers. 
The register allocators know to filter reserved registers from the allocation
orders, so we don't need all of this boilerplate.

llvm-svn: 132199
 2011-05-27 18:27:13 +00:00
Devang Patel
c0bffe6366 Handle signed types gracefully. 
This fixes regressions reported by buildbots as a fallout of r132193.

llvm-svn: 132197
 2011-05-27 18:15:52 +00:00
Eli Friedman
17000790d8 Oops, wasn't intending to commit this. Partial revert of r132194. 
llvm-svn: 132195
 2011-05-27 18:04:04 +00:00
Eli Friedman
560532051b Fix a silly mistake (which trips over an assertion) in r132099. rdar://9515076 
llvm-svn: 132194
 2011-05-27 18:02:04 +00:00
Devang Patel
62a7038a9f Select DW_AT_const_value size based on variable size. 
llvm-svn: 132193
 2011-05-27 16:45:18 +00:00
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
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
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
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