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Author SHA1 Message Date
Evan Cheng
5fbe5e783e Some autoconf tests use module level inline asm to test compiler's handling of 
.cfi_startproc. e.g. libffi:

 $ cat confopt.c 
asm (".cfi_startproc\n\t.cfi_endproc");

int main () { return 0; }

Teach MC / dwarf emission to handle these cfi directives which essentially
create an empty frame.

rdar://10017184


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138504 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-24 22:31:37 +00:00
Jim Grosbach
070260cb29 Update tests for 138501. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138502 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-24 22:30:18 +00:00
Jim Grosbach
b9d3ff8729 ARM asm backend initialize isThumbMode based on target triple. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138501 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-24 22:27:35 +00:00
Jim Grosbach
4d23e99d2a Thumb .n mnemonic qualifiers can be ignored for now. 
We'll need to pay attention to them when we start getting more serious about
the details of parsing thumb2 assembly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138500 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-24 22:19:48 +00:00
Jim Grosbach
f69c804036 Thumb parsing and encoding for SUB (SP minu immediate). 
Fix FiXME in test file. Remove FIXME for SUB (SP minus register) since that
form is Thumb2 only.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138494 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-24 21:42:27 +00:00
Owen Anderson
12a1e3bbcb Be careful not to walk off the end of the operand info list while updating VFP predicates. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138492 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-24 21:35:46 +00:00
Jim Grosbach
72f39f8436 Thumb parsing and encoding support for ADD SP instructions. 
Fix the test FIXME and add parsing support for the ADD (SP plus immediate)
and ADD (SP plus register) instruction forms.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138488 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-24 21:22:15 +00:00
Eli Friedman
4317fe1fc6 Fix whitespace. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138487 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-24 21:17:30 +00:00
Eli Friedman
bbc87a3a9a Basic tests for atomic load and store on x86. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138486 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-24 21:16:59 +00:00
Bill Wendling
a4c86ab073 Skip the landingpad instruction when determining the insertion point. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138481 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-24 21:06:46 +00:00
Eli Friedman
327236cd6c Basic x86 code generation for atomic load and store instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138478 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-24 20:50:09 +00:00
Bill Wendling
b05fdd6bab Use getFirstInsertionPt instead of getFirstNonPHI so that it skips to the proper 
insertion place.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138473 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-24 20:28:43 +00:00
Eli Friedman
c264b2f693 Some minor updates to atomic acquire/release docs in LangRef. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138472 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-24 20:28:39 +00:00
Nadav Rotem
4c7c0f2353 Implement Constant::isAllOnesValue(). Fix ConstantFolding to use the new api. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138469 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-24 20:18:38 +00:00
Jim Grosbach
df9ce6bbc5 When printing Thumb1 NOP ('mov r8, r8'), make sure to print the predicate. 
rdar://10015134

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138467 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-24 20:06:14 +00:00
Bruno Cardoso Lopes
356e988110 Mark VZEROALL as clobbering all YMM registers 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138461 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-24 18:48:33 +00:00
Jim Grosbach
f95aaf951b Add missing explicit writeback operand to tSTMIA_UPD. 
rdar://10014745

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138457 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-24 18:19:42 +00:00
Evan Cheng
3e74d6fdd2 Move TargetRegistry and TargetSelect from Target to Support where they belong. 
These are strictly utilities for registering targets and components.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138450 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-24 18:08:43 +00:00
Rafael Espindola
605e2b5184 Fix a crashing bug in SplitBlock when it is called on a block with no 
dominator information even though dominators were previously computed.

Patch by Nick Sumner.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138449 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-24 18:07:01 +00:00
Jim Grosbach
c7e0bb2325 Thumb add SP assembly syntax fix. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138448 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-24 18:04:27 +00:00
Jim Grosbach
5b81584f74 Thumb1 ADD/SUB SP instructions are predicable in Thumb2 mode. 
Add the predicate operand to the instructions. Update the back end
accordingly where the instructions are used. Restrict the SP operands
to actually only be SP, as otherwise these break assembly parsing for the
normal instruction variants.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138445 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-24 17:46:13 +00:00
Owen Anderson
e234d02204 Be stricter in enforcing IT instruction predicate values, so that we don't end up trying to print out an illegal predicate. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138443 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-24 17:21:43 +00:00
Owen Anderson
ddaa513fce Port over more encoding tests to decoding tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138441 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-24 17:08:34 +00:00
Jim Grosbach
ee61d67c2f Tidy up. Trailing whitespace. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138437 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-24 16:44:17 +00:00
Richard Osborne
8f9c5cca4f Add Uses=[SP] to call instructions. This fixes a miscompilation with a 
variable sized alloca.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138433 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-24 13:32:43 +00:00
Craig Topper
13894fa135 Break 256-bit vector int add/sub/mul into two 128-bit operations to avoid costly scalarization. Fixes PR10711. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138427 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-24 06:14:18 +00:00
Bill Wendling
3ae96d69ef Add the sentinal "no handle" value to the ResumeInst. 
A value of -1 at a call site tells the personality function that this call isn't
handled by the current function. Since the ResumeInsts are converted to calls to
_Unwind_SjLj_Resume, add a (volatile) store of -1 to its 'call site'.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138416 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-24 00:00:23 +00:00
Bill Wendling
fc8713ff74 Don't replace *all* uses with the new stuff. 
This is not necessarily the first or dominating use of the EH values. The IR
breaks if it's not. So replace the specific value in the instruction with the
new value.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138406 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-23 22:55:03 +00:00
Bill Wendling
cfcccef926 Look at the end of the entry block for an invoke. 
The invoke could be at the end of the entry block. If it's the only one, then we
won't process all of the landingpad instructions correctly. This code is
currently ugly, but should be made much nicer once the new EH switch is thrown.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138397 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-23 22:20:16 +00:00
Bruno Cardoso Lopes
d8b7dd5252 Fix a nasty bug where a v4i64 was being wrong emitted with 32-bit 
permutations. Also tidy up some patterns and make them close to their
instruction definition!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138392 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-23 22:06:37 +00:00
Bill Wendling
4477d691ed A landingpad instruction is neither folded nor dead. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138387 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-23 21:33:05 +00:00
Jim Grosbach
5aa29a0cff Move ARM frame-unwinding EHABI handling a touch earlier. 
It should go before AsmPrinter MC pseudo expansion since it's based on
MachineInstr, not MCInst. Otherwise any frame related pseudo instructions
may be missed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138386 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-23 21:32:34 +00:00
Jim Grosbach
d04f6a581c [SU]XT[BH] are only available on ARMv6 and up. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138373 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-23 20:53:08 +00:00
Nate Begeman
7ced7763ca Add some useful accessors to c++ api that appear to be missing from the c api 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138371 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-23 20:27:46 +00:00
Evan Cheng
7801136b95 Some refactoring so TargetRegistry.h no longer has to include any files 
from MC.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138367 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-23 20:15:21 +00:00
Eric Christopher
acc8f2d938 Revert "Address Duncan's CR request:" 
This reverts commit 20a05be15e. (svn rev 138340)

Conflicts:

	test/Transforms/InstCombine/bitcast.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138366 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-23 20:11:10 +00:00
Jim Grosbach
99e84e07ff Thumb parsing and encoding for WFE, WFI and YIELD. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138364 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-23 20:02:30 +00:00
Jim Grosbach
3284db5bfb Thumb parsing and encoding for UXTB and UXTH. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138363 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-23 19:59:32 +00:00
Jim Grosbach
010bebc696 Thumb parsing and encoding for TST. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138362 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-23 19:53:17 +00:00
Jim Grosbach
4b6658dd0a Thumb parsing and encoding for SXTB and SXTH. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138361 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-23 19:51:42 +00:00
Jim Grosbach
ec8b866434 Thumb parsing and encoding for SVC. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138360 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-23 19:49:10 +00:00
Jim Grosbach
414b02357a Thumb parsing and encoding for SUB. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138359 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-23 19:45:45 +00:00
Evan Cheng
1dafa70585 Fix 80 col violations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138356 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-23 19:17:21 +00:00
Nick Lewycky
726ebd6ff3 PerformSubCombine to work on integers larger than i128. Fixes a crasher. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138354 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-23 19:01:24 +00:00
Jim Grosbach
743c0fa779 Thumb parsing and encoding for STRH. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138352 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-23 18:56:20 +00:00
Caitlin Sadowski
b1aa80bfe4 Thread safety: Adding in an option for variadic expr* array of arguments 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138351 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-23 18:49:23 +00:00
Jim Grosbach
aec3a61c8b Thumb parsing and encoding for STRB. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138349 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-23 18:43:06 +00:00
Jim Grosbach
803b1aa8ef Thumb parsing and encoding for tSTRspi. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138348 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-23 18:39:41 +00:00
Jim Grosbach
4c821d800a Thumb parsing and encoding for STR. 
Not including tSTRspi.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138347 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-23 18:33:38 +00:00
Rafael Espindola
3395fe1e4b Fix an example in the documentation. 
Patch by Sanjoy Das!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138346 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-23 18:26:56 +00:00