Commit Graph

55453 Commits

Author SHA1 Message Date
Chris Lattner c0f6402a94 Fix the Convert to scalar to not insert dead loads in the store case. The
load is needed when we have a small store into a large alloca (at which 
point we get a load/insert/store sequence), but when you do a full-sized
store, this load ends up being dead.

This dead load is bad in really large nasty testcases where the load ends
up causing mem2reg to insert large chains of dependent phi nodes which only
ADCE can delete.  Instead of doing this, just don't insert the dead load.

This fixes rdar://6864035

llvm-svn: 91917
2009-12-22 19:33:28 +00:00
Chris Lattner fda3b559e6 fix some fixme's by using twines
llvm-svn: 91916
2009-12-22 19:23:33 +00:00
Jakob Stoklund Olesen 6f579c12b1 Use proper move instructions. Make the verifier happy.
llvm-svn: 91914
2009-12-22 18:49:55 +00:00
Bob Wilson bac37abe73 Report an error for bad inline assembly, where the value passed for an
"indirect" operand is not a pointer.

llvm-svn: 91913
2009-12-22 18:34:19 +00:00
Evan Cheng 71d7eaa87e Remove target attribute break-sse-dep. Instead, do not fold load into sse partial update instructions unless optimizing for size.
llvm-svn: 91910
2009-12-22 17:47:23 +00:00
Douglas Gregor 8b858396d4 Include based on the current path, since we already -I the X86 target's path. Fixes CMake build
llvm-svn: 91908
2009-12-22 17:25:11 +00:00
Sanjiv Gupta 8c5f05fcee While converting one of the operands to a memory operand, we need to check if it is Legal and does not result into a cyclic dep.
llvm-svn: 91904
2009-12-22 14:25:37 +00:00
Chris Lattner 778f92ab02 specify what is invalid about it
llvm-svn: 91901
2009-12-22 07:03:21 +00:00
Chris Lattner f6d4129c76 specify a triple to use, fixing the test on non-x86-64 hosts.
llvm-svn: 91900
2009-12-22 07:01:12 +00:00
Chris Lattner 502f0f11e0 reject invalid input with a caret, e.g.:
simple-tests.txt:16:1: error: invalid instruction
0xff 0xff
^

llvm-svn: 91898
2009-12-22 06:58:29 +00:00
Bob Wilson 62a84ea8e3 Generalize SROA to allow the first index of a GEP to be non-zero. Add a
missing check that an array reference doesn't go past the end of the array,
and remove some redundant checks for in-bound array and vector references
that are no longer needed.

llvm-svn: 91897
2009-12-22 06:57:14 +00:00
Chris Lattner dd0c01b5de various cleanups, make the disassemble reject lines with too much
data on them, for example:

	addb	%al, (%rax)
simple-tests.txt:11:5: error: excess data detected in input
0 0 0 0 0 
    ^

llvm-svn: 91896
2009-12-22 06:56:51 +00:00
Chris Lattner 8879918722 If you thought that it didn't make sense for the disassembler
to not produce caret diagnostics, you were right!

llvm-svn: 91895
2009-12-22 06:45:48 +00:00
Chris Lattner dc9845b79a rewrite the file parser for the disassembler, implementing support for
comments.  Also, check in a simple testcase for the disassembler,
including a test for r91864

llvm-svn: 91894
2009-12-22 06:37:58 +00:00
Chris Lattner 72cbaa2ecb don't crash on blank lines, rename some variables.
llvm-svn: 91892
2009-12-22 06:24:00 +00:00
Chris Lattner f21a220bcd Implement PR5795 by merging duplicated return blocks. This could go further
by merging all returns in a function into a single one, but simplifycfg 
currently likes to duplicate the return (an unfortunate choice!)

llvm-svn: 91890
2009-12-22 06:07:30 +00:00
Chris Lattner 2b297ed9ee convert to filecheck
llvm-svn: 91889
2009-12-22 06:04:26 +00:00
Chris Lattner f3ef2cada7 don't run GVN at -O1, GCC doesn't do it's equivalent at that optimization level.
llvm-svn: 91886
2009-12-22 04:47:41 +00:00
Chris Lattner 9b7d99eb76 The phi translated pointer can be computed when returning a partially cached result
instead of stored.  This reduces memdep memory usage, and also eliminates a bunch of
weakvh's.  This speeds up gvn on gcc.c-torture/20001226-1.c from 23.9s to 8.45s (2.8x)
on a different machine than earlier.

llvm-svn: 91885
2009-12-22 04:25:02 +00:00
Bill Wendling 919b7aab2e Add more plumbing. This time in the LowerArguments and "get" functions which
return partial registers. This affected the back-end lowering code some.

Also patch up some places I missed before in the "get" functions.

llvm-svn: 91880
2009-12-22 02:10:19 +00:00
Sean Callanan 2f9443f422 Changed REG_* to MODRM_REG_* to avoid conflicts
with symbols in AuroraUX's global namespace.

llvm-svn: 91879
2009-12-22 02:07:42 +00:00
Daniel Dunbar 8b532de418 Fix some may-be-uninitialized var warnings.
llvm-svn: 91878
2009-12-22 01:41:37 +00:00
Chris Lattner 3d1205b3a8 fix unit test that I broke.
llvm-svn: 91877
2009-12-22 01:38:23 +00:00
Bill Wendling ac08758b71 Add SDNode ordering to inlined asm and VA functions.
llvm-svn: 91876
2009-12-22 01:25:10 +00:00
Eric Christopher ab6a0d60d5 Whitespace fixes.
llvm-svn: 91875
2009-12-22 01:23:51 +00:00
Chris Lattner 18d8b7575e types don't need atomic inc/dec, they are local to an llvmcontext.
llvm-svn: 91873
2009-12-22 01:17:43 +00:00
Bill Wendling f376c40d0e Adding more assignment of ordering to SDNodes. This time in the "call" and
generic copy functions.

llvm-svn: 91872
2009-12-22 01:11:43 +00:00
Sean Callanan 5c8f4cd396 Fixed library dependencies between the X86 disassembler and
X86 codegen that were causing circular symbol dependencies.

llvm-svn: 91871
2009-12-22 01:11:26 +00:00
Chris Lattner 2ee6787c1b avoid calling extractMallocCall when it's obvious we don't have
a call.  This speeds up memdep ~1.5%

llvm-svn: 91869
2009-12-22 01:00:32 +00:00
Chris Lattner 84463813a1 comment fix: weakvh -> tracking vh
llvm-svn: 91867
2009-12-22 00:51:57 +00:00
Bill Wendling a4d7df7a37 Add ordering of SDNodes to LowerCallTo.
llvm-svn: 91866
2009-12-22 00:50:32 +00:00
Chris Lattner 6211d7ba4b print pcrel immediates as signed values instead of unsigned so that we
get things like this out of the disassembler:

0x100000ecb: callq	-96

instead of:

0x100000ecb: callq	4294967200

rdar://7491123

llvm-svn: 91864
2009-12-22 00:44:05 +00:00
Bill Wendling b99b2693f3 Now add ordering to SDNodes created by the massive intrinsic lowering function.
llvm-svn: 91863
2009-12-22 00:40:51 +00:00
Bill Wendling ea3e73e596 To make things interesting, I added MORE code to set the ordering of
SDNodes. This time in the load/store and limited-precision code.

llvm-svn: 91860
2009-12-22 00:12:37 +00:00
Lang Hames 4c052261de Changed slot index ranges for MachineBasicBlocks to be exclusive of endpoint.
This fixes an in-place update bug where code inserted at the end of basic blocks may not be covered by existing intervals which were live across the entire block. It is also consistent with the way ranges are specified for live intervals.

llvm-svn: 91859
2009-12-22 00:11:50 +00:00
Bill Wendling c6b473433b Add more plumbing to assign ordering to SDNodes. Have the "getValue" method
assign the ordering when called. Combine some of the ordering assignments to
keep things simple.

llvm-svn: 91857
2009-12-21 23:47:40 +00:00
Daniel Dunbar c661a2d4d8 Add suggested parentheses.
llvm-svn: 91853
2009-12-21 23:27:57 +00:00
Chris Lattner bf20018423 Add a fastpath to Load GVN to special case when we have exactly one dominating
load to avoid even messing around with SSAUpdate at all.  In this case (which
is very common, we can just use the input value directly).

This speeds up GVN time on gcc.c-torture/20001226-1.c from 36.4s to 16.3s,
which still isn't great, but substantially better and this is a simple speedup
that applies to lots of different cases.

llvm-svn: 91851
2009-12-21 23:15:48 +00:00
Bill Wendling e79105b591 More ordering plumbing. This time for GEP. I need to remember to assign
orderings to values returned by getValue().

llvm-svn: 91850
2009-12-21 23:10:19 +00:00
Chris Lattner 927b0ac4b2 refactor some code out to a new helper method.
llvm-svn: 91849
2009-12-21 23:04:33 +00:00
Chris Lattner eaa25da8bb improve indentation avoid a pointless conversion from weakvh to trackingvh,
no functionality change.

llvm-svn: 91848
2009-12-21 22:43:03 +00:00
Bill Wendling fff99f066b Another incremental check-in for assigning ordering to SDNodes. This time for
shuffle and insert vector.

llvm-svn: 91847
2009-12-21 22:42:14 +00:00
Bill Wendling 443d0722b0 Assign ordering to more instructions. Incremental check-in.
llvm-svn: 91846
2009-12-21 22:30:11 +00:00
Bill Wendling 28727f3785 - Add a bit more plumbing assigning an order to SDNodes.
- Modify the "dump" method to emit the order of an SDNode.

llvm-svn: 91845
2009-12-21 21:59:52 +00:00
David Greene dbf7074296 Fix a bug in !subst where TableGen would go and resubstitute text it had
just substituted.  This could cause infinite looping in certain
pathological cases.

llvm-svn: 91843
2009-12-21 21:21:34 +00:00
Anton Korobeynikov 131420c5d7 Remove uber-gross hack. The define _snprintf to snprintf is invalid due to two reasons: 1. Accroding to C++ standard snprintf should be available in std namespace (and __gnu_cxx in case of GCC to). Such ifdef will change all snprintf's to _snprintf's, but won't bring snprintf to all necessary namespaces. Thus e.g. any locale-using code on mingw will yield an error (include this file + string to see the result) 2. MSVCRT's _snprintf does not comply with C99 standard. Standard one is snprintf.
llvm-svn: 91842
2009-12-21 20:19:37 +00:00
Anton Korobeynikov 3e9e87a9cb Mark FPW as allocable when frame address is taken.
llvm-svn: 91841
2009-12-21 20:18:49 +00:00
Bill Wendling 7f5eb53ce2 First wave of plumbing for assigning an ordering to SDNodes. This takes care of
a lot of the branching instructions.

llvm-svn: 91838
2009-12-21 19:59:38 +00:00
Evan Cheng db4d798619 Delete the instruction just before the function terminates for consistency sake.
llvm-svn: 91836
2009-12-21 19:53:39 +00:00
Bill Wendling 6de55a0efd Place SDNodeOrdering.h in the directory it's used.
llvm-svn: 91834
2009-12-21 19:34:59 +00:00
Bob Wilson 88a0598fe8 Remove special-case SROA optimization of variable indexes to one-element and
two-element arrays.  After restructuring the SROA code, it was not safe to
do this without adding more checking.  It is not clear that this special-case
has really been useful, and removing this simplifies the code quite a bit.

llvm-svn: 91828
2009-12-21 18:39:47 +00:00
Daniel Dunbar 0fc1f6c595 XFAIL these tests on powerpc, under the assumption that no one cares. If you care, feel free to fix.
llvm-svn: 91826
2009-12-21 17:31:59 +00:00
Eric Christopher a91c0f48e6 Fix setting and default setting of code model for jit. Do this
by allowing backends to override routines that will default
the JIT and Static code generation to an appropriate code model
for the architecture.

Should fix PR 5773.

llvm-svn: 91824
2009-12-21 08:15:29 +00:00
Eli Friedman dbe2aa91b9 A couple minor README updates.
llvm-svn: 91823
2009-12-21 08:03:16 +00:00
Chris Lattner a0a51c7b0e improve compatibility with SWIG, patch by James Knight!
llvm-svn: 91822
2009-12-21 07:52:40 +00:00
Chris Lattner 4edfcb88e1 revert r89298, which was committed without a testcase. I think
the underlying PHI node insertion issue in SSAUpdate is fixed.

llvm-svn: 91821
2009-12-21 07:45:57 +00:00
Chris Lattner 8fb07c5a21 fix PR5837 by having SSAUpdate reuse phi nodes for the
'GetValueInMiddleOfBlock' case, instead of inserting 
duplicates.

A similar fix is almost certainly needed by the machine-level
SSAUpdate implementation.

llvm-svn: 91820
2009-12-21 07:16:11 +00:00
Chris Lattner 080f666e01 add a helper ctor.
llvm-svn: 91819
2009-12-21 07:15:15 +00:00
Eli Friedman 00879d8faa Change StringRef::startswith and StringRef::endswith to versions which are a
bit more verbose, but optimize to much shorter code.

llvm-svn: 91817
2009-12-21 06:49:24 +00:00
Chris Lattner 7bc85a931e add check lines for min/max tests.
llvm-svn: 91816
2009-12-21 06:08:50 +00:00
Chris Lattner 33269813df really convert this to filecheck.
llvm-svn: 91815
2009-12-21 06:06:10 +00:00
Chris Lattner d4fb4296df give instcombine some helper functions for matching MIN and MAX, and
implement some optimizations for MIN(MIN()) and MAX(MAX()) and 
MIN(MAX()) etc.  This substantially improves the code in PR5822 but
doesn't kick in much elsewhere.  2 max's were optimized in 
pairlocalalign and one in smg2000.

llvm-svn: 91814
2009-12-21 06:03:05 +00:00
Chris Lattner 7a72d50de7 filecheckize
llvm-svn: 91813
2009-12-21 05:53:13 +00:00
Chris Lattner ffbd02829c enhance x-(-A) -> x+A to preserve NUW/NSW.
Use the presence of NSW/NUW to fold "icmp (x+cst), x" to a constant in
cases where it would otherwise be undefined behavior.

Surprisingly (to me at least), this triggers hundreds of the times in
a few benchmarks: lencode, ldecode, and 466.h264ref seem to *really*
like this.

llvm-svn: 91812
2009-12-21 04:04:05 +00:00
Chris Lattner 900ce231f9 Optimize all cases of "icmp (X+Cst), X" to something simpler. This triggers
a bunch in lencode, ldecod, spass, 176.gcc, 252.eon, among others.  It is 
also the first part of PR5822

llvm-svn: 91811
2009-12-21 03:19:28 +00:00
Chris Lattner d18b455086 convert to filecheck
llvm-svn: 91810
2009-12-21 03:11:05 +00:00
Lang Hames 0209f50c0d Fixed use of phi param in SlotIndex constructors.
llvm-svn: 91790
2009-12-19 23:32:32 +00:00
Chris Lattner 25bf6f8946 fix an overly conservative caching issue that caused memdep to
cache a pointer as being unavailable due to phi trans in the
wrong place.  This would cause later queries to fail even when
they didn't involve phi trans.

llvm-svn: 91787
2009-12-19 21:29:22 +00:00
Daniel Dunbar 039d6e11a8 CMake: Update lib deps.
llvm-svn: 91786
2009-12-19 21:27:30 +00:00
Chris Lattner 5c13f389cb .llx is no more.
llvm-svn: 91784
2009-12-19 20:56:53 +00:00
Chris Lattner 95b431dd32 fix inconsistent use of tabs
llvm-svn: 91783
2009-12-19 20:44:43 +00:00
Daniel Dunbar 877075a41f Remove unused variable (noticed by clang++).
llvm-svn: 91780
2009-12-19 18:58:49 +00:00
Daniel Dunbar 4750efc28a #if 0 out X86 disassembler for now, it is breaking the build in multiple places.
llvm-svn: 91778
2009-12-19 17:11:53 +00:00
Sanjiv Gupta 8ac077df57 Emit direction operand in binary insns that stores in memory.
llvm-svn: 91777
2009-12-19 13:52:01 +00:00
Sanjiv Gupta bdef02be69 Adding a bunch of options to the mcc16 driver.
llvm-svn: 91776
2009-12-19 13:13:29 +00:00
Nuno Lopes 3ed6d6003c rename dprintf to dbgpritnf, in order to fix build with glibc (which already defines dprintf in stdio.h
llvm-svn: 91775
2009-12-19 12:07:00 +00:00
Nuno Lopes 91b866a163 fix build and while at it remove a redudant include
llvm-svn: 91774
2009-12-19 11:52:18 +00:00
Sanjiv Gupta bda8002e7f Test cases for changes done in 91768.
llvm-svn: 91773
2009-12-19 11:38:14 +00:00
Sanjiv Gupta 4f469974b2 1. In indirect load/store insns , the name of fsr should be emitted as INDF.
2. include standard asmbly headers in generated asmbly.

llvm-svn: 91768
2009-12-19 08:26:25 +00:00
Douglas Gregor 740ab38bb7 Fix a bunch of little errors that Clang complains about when its being pedantic
llvm-svn: 91764
2009-12-19 07:05:23 +00:00
Chris Lattner 4ad5eba568 fix PR5827 by disabling the phi slicing transformation in a case
where instcombine would have to split a critical edge due to a
phi node of an invoke.  Since instcombine can't change the CFG,
it has to bail out from doing the transformation.

llvm-svn: 91763
2009-12-19 07:01:15 +00:00
Bob Wilson c16811b575 Update my SROA changes in response to review.
* change FindElementAndOffset to return a uint64_t instead of unsigned, and
  to identify the type to be used for that result in a GEP instruction.
* move "isa<ConstantInt>" to be first in conditional.
* replace some dyn_casts with casts.
* add a comment about handling mem intrinsics.

llvm-svn: 91762
2009-12-19 06:53:17 +00:00
Daniel Dunbar 3a821f7f0c More bzero -> memset that I missed.
llvm-svn: 91757
2009-12-19 04:16:57 +00:00
Daniel Dunbar f008ea5fa0 Add missing newlines at EOF (for clang++).
llvm-svn: 91756
2009-12-19 04:16:48 +00:00
Daniel Dunbar c745a620a2 Use memset instead of bzero, its more portable.
llvm-svn: 91754
2009-12-19 03:31:50 +00:00
Douglas Gregor 0a66daf900 Remove spurious semicolon. Thanks, Clang
llvm-svn: 91752
2009-12-19 03:21:36 +00:00
Sean Callanan 04cc307edd Table-driven disassembler for the X86 architecture (16-, 32-, and 64-bit
incarnations), integrated into the MC framework.  

The disassembler is table-driven, using a custom TableGen backend to 
generate hierarchical tables optimized for fast decode.  The disassembler 
consumes MemoryObjects and produces arrays of MCInsts, adhering to the 
abstract base class MCDisassembler (llvm/MC/MCDisassembler.h).

The disassembler is documented in detail in

- lib/Target/X86/Disassembler/X86Disassembler.cpp (disassembler runtime)
- utils/TableGen/DisassemblerEmitter.cpp (table emitter)

You can test the disassembler by running llvm-mc -disassemble for i386
or x86_64 targets.  Please let me know if you encounter any problems
with it.

llvm-svn: 91749
2009-12-19 02:59:52 +00:00
Anton Korobeynikov 148d87b0b0 Bump alignment requirements for windows targets to achieve compartibility with vcpp.
Based on patch by Michael Beck!

llvm-svn: 91745
2009-12-19 02:04:23 +00:00
Anton Korobeynikov 10590171fa Use 4-arg getVTList) variant instead of generic one, when possible
llvm-svn: 91744
2009-12-19 02:04:00 +00:00
Dan Gohman a73df58110 Delete unused code.
llvm-svn: 91743
2009-12-19 01:47:13 +00:00
Dan Gohman 876f45d7d2 Fix a spello in a comment that Nick spotted.
llvm-svn: 91742
2009-12-19 01:46:34 +00:00
Dan Gohman b0da63da1e Fix a comment.
llvm-svn: 91741
2009-12-19 01:46:09 +00:00
Chris Lattner dd3e9aaad3 Make some methods const. The only interesting change here is that
it changes raw_fd_ostream::preferred_buffer_size to return zero on
a scary stat failure instead of setting the stream to an error state.
This method really should not mutate the stream.

llvm-svn: 91740
2009-12-19 01:38:42 +00:00
John McCall 086bb4ef82 Qualify a bunch of explicit template instantiations to satisfy clang++.
llvm-svn: 91736
2009-12-19 00:55:12 +00:00
John McCall 791e5c9dd5 Put TypesEqual and TypeHasCycleThroughItself in namespace llvm so ADL from
the templates in TypesContext.h can find them.  Caught by clang++.

llvm-svn: 91735
2009-12-19 00:51:42 +00:00
Bill Wendling 57f2a6187a Forgot forward declaration.
llvm-svn: 91732
2009-12-19 00:05:07 +00:00
Dan Gohman f902c8c1b5 Eliminate unnecessary LLVMContexts.
llvm-svn: 91729
2009-12-18 23:42:08 +00:00
Bill Wendling 022d18fa3f Changes from review:
- Move DisableScheduling flag into TargetOption.h
- Move SDNodeOrdering into its own header file. Give it a minimal interface that
  doesn't conflate construction with storage.
- Move assigning the ordering into the SelectionDAGBuilder.

This isn't used yet, so there should be no functional changes.

llvm-svn: 91727
2009-12-18 23:32:53 +00:00
Dan Gohman 7db230f5c9 Make this comment more precise.
llvm-svn: 91722
2009-12-18 23:18:03 +00:00
Eli Friedman 36623cc253 Fix an issue in googletest where a name was used before it was defined.
llvm-svn: 91718
2009-12-18 21:38:44 +00:00
Evan Cheng b175de6356 Increase opportunities to optimize (brcond (srl (and c1), c2)).
llvm-svn: 91717
2009-12-18 21:31:31 +00:00
Eli Friedman 3a7cdaca33 Fix gcc warning.
llvm-svn: 91715
2009-12-18 21:07:18 +00:00
Rafael Espindola 2c5792a6bd Catch more cases of a pointer being marked garbage twice. This helps when
debugging some leaks (PR5770 in particular).

llvm-svn: 91713
2009-12-18 20:35:38 +00:00
Bob Wilson 532cd232fb Reapply 91459 with a simple fix for the problem that broke the x86_64-darwin
bootstrap.  This also replaces the WeakVH references that Chris objected to
with normal Value references.

llvm-svn: 91711
2009-12-18 20:14:40 +00:00
Bob Wilson a8e2997aa0 Fix another parallel make race condition.
llvm-svn: 91709
2009-12-18 20:12:14 +00:00
Victor Hernandez 0471abd58b Formalize MDNode's function-localness:
- an MDNode is designated as function-local when created, and continues to be even if its operands are modified not to refer to function-local IR
- function-localness is designated via lowest bit in SubclassData
- getLocalFunction() descends MDNode tree to see if it is consistently function-local

Add verification of MDNodes to checks that MDNodes are consistently function-local.
Update AsmWriter to use isFunctionLocal().

llvm-svn: 91708
2009-12-18 20:09:14 +00:00
Daniel Dunbar cf7744e44d Fix Win32 Path.inc for API update.
llvm-svn: 91706
2009-12-18 19:59:48 +00:00
Dan Gohman 51f13056bd Revert this use of NUW/NSW also. Overflow-undefined multiplication isn't
associative either.

llvm-svn: 91701
2009-12-18 18:45:31 +00:00
Rafael Espindola b73b4fd30e Fix libstdc++ build on ARM linux and part of PR5770.
MI was not being used but it was also not being deleted, so it was kept in the garbage list. The memory itself was freed once the function code gen was done.

Once in a while the codegen of another function would create an instruction on the same address. Adding it to the garbage group would work once, but when another pointer was added it would cause an assert as "Cache" was about to be pushed to Ts.

For a patch that make us detect problems like this earlier, take a look at

http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20091214/092758.html

With that patch we assert as soon and the new instruction is added to the garbage set.

llvm-svn: 91691
2009-12-18 16:59:39 +00:00
Tilmann Scheller 5b2df8dcb5 Fix wrong frame pointer save offset in the 64-bit PowerPC SVR4 ABI.
Patch contributed by Ken Werner of IBM!

llvm-svn: 91681
2009-12-18 13:00:34 +00:00
Tilmann Scheller 79fef9349c Add support for calls through function pointers in the 64-bit PowerPC SVR4 ABI.
Patch contributed by Ken Werner of IBM!

llvm-svn: 91680
2009-12-18 13:00:15 +00:00
Mikhail Glushenkov d7015906d0 Make 'set_option' work with list options.
This works now: (set_option "list_opt", ["val_1", "val_2", "val_3"])

llvm-svn: 91679
2009-12-18 11:27:26 +00:00
Eli Friedman 86b9d75dc8 Optimize icmp of null and select of two constants even if the select has
multiple uses.  (The construct in question was found in gcc.)

llvm-svn: 91675
2009-12-18 08:22:35 +00:00
Evan Cheng 4cf30b72bf On recent Intel u-arch's, folding loads into some unary SSE instructions can
be non-optimal. To be precise, we should avoid folding loads if the instructions
only update part of the destination register, and the non-updated part is not
needed. e.g. cvtss2sd, sqrtss. Unfolding the load from these instructions breaks
the partial register dependency and it can improve performance. e.g.

movss (%rdi), %xmm0
cvtss2sd %xmm0, %xmm0

instead of
cvtss2sd (%rdi), %xmm0

An alternative method to break dependency is to clear the register first. e.g.
xorps %xmm0, %xmm0
cvtss2sd (%rdi), %xmm0

llvm-svn: 91672
2009-12-18 07:40:29 +00:00
Dan Gohman 7a2dab8826 Revert this use of NSW; this one isn't actually safe. NSW addition
is not reassociative.

llvm-svn: 91667
2009-12-18 03:57:04 +00:00
Dan Gohman 57e808628c Eliminte unnecessary uses of <cstdio>.
llvm-svn: 91666
2009-12-18 03:25:51 +00:00
Dan Gohman 4e3b29e309 Add utility routines for NSW multiply.
llvm-svn: 91664
2009-12-18 03:10:26 +00:00
Dan Gohman 4ab4420d7a Add utility routines for creating integer negation operators with NSW set.
Integer negation only overflows with INT_MIN, but that's an important case.

llvm-svn: 91662
2009-12-18 02:58:50 +00:00
Dan Gohman 916fec41fb Delete an unused variable.
llvm-svn: 91659
2009-12-18 02:14:37 +00:00
Eric Christopher 4c155350f1 Fix typo.
llvm-svn: 91657
2009-12-18 02:12:53 +00:00
Dan Gohman b256ccfbe5 Preserve NSW information in more places.
llvm-svn: 91656
2009-12-18 02:09:29 +00:00
Evan Cheng 3dfd04e2b7 Re-apply 91623 now that I actually know what I was trying to do.
llvm-svn: 91655
2009-12-18 01:59:21 +00:00
Dan Gohman 18fa5686f6 Add Loop contains utility methods for testing whether a loop
contains another loop, or an instruction. The loop form is
substantially more efficient on large loops than the typical
code it replaces.

llvm-svn: 91654
2009-12-18 01:24:09 +00:00
Dan Gohman fd7231f1fe Minor code simplification.
llvm-svn: 91653
2009-12-18 01:20:44 +00:00
Dan Gohman cb0efecd33 Whitespace cleanups.
llvm-svn: 91651
2009-12-18 01:14:11 +00:00
Dan Gohman 51fbfb726f Tidy up this testcase and add test for tailcall optimization
with unreachable.

llvm-svn: 91650
2009-12-18 01:05:06 +00:00
Bob Wilson 3152b0471b Handle ARM inline asm "w" constraints with 64-bit ("d") registers.
The change in SelectionDAGBuilder is needed to allow using bitcasts to convert
between f64 (the default type for ARM "d" registers) and 64-bit Neon vector
types.  Radar 7457110.

llvm-svn: 91649
2009-12-18 01:03:29 +00:00
Dan Gohman 7f4326f8b6 Remove "tail" keywords. These calls are not intended to be tail calls.
This protects this test from depending on codegen not performing the
tail call optimization by default.

llvm-svn: 91648
2009-12-18 01:02:18 +00:00
Dan Gohman b1924e8a0f Don't pass const pointers by reference.
llvm-svn: 91647
2009-12-18 00:38:08 +00:00
Dan Gohman 1af1954852 Update a comment.
llvm-svn: 91645
2009-12-18 00:28:43 +00:00
John McCall eabfd8b155 Pass the error string directly to llvm_unreachable instead of the residual
(0 && "error").  Rough consensus seems to be that g++ *should* be diagnosing
this because the pointer makes it not an ICE in c++03.  Everyone agrees that
the current standard is silly and null-pointer-ness should not be based on
ICE-ness.  Excellent fight scene in Act II, denouement weak, two stars.

llvm-svn: 91644
2009-12-18 00:27:18 +00:00
Jakob Stoklund Olesen 78c5919b14 Add test case for the phi reuse patch.
llvm-svn: 91642
2009-12-18 00:11:44 +00:00
Dan Gohman 92c3696524 Reapply LoopStrengthReduce and IVUsers cleanups, excluding the part
of 91296 that caused trouble -- the Processed list needs to be
preserved for the livetime of the pass, as AddUsersIfInteresting
is called from other passes.

llvm-svn: 91641
2009-12-18 00:06:20 +00:00
Sean Callanan 04d8cb74f3 Instruction fixes, added instructions, and AsmString changes in the
X86 instruction tables.

Also (while I was at it) cleaned up the X86 tables, removing tabs and
80-line violations.

This patch was reviewed by Chris Lattner, but please let me know if
there are any problems.

* X86*.td
	Removed tabs and fixed 80-line violations

* X86Instr64bit.td
	(IRET, POPCNT, BT_, LSL, SWPGS, PUSH_S, POP_S, L_S, SMSW)
		Added
	(CALL, CMOV) Added qualifiers
	(JMP) Added PC-relative jump instruction
	(POPFQ/PUSHFQ) Added qualifiers; renamed PUSHFQ to indicate
		that it is 64-bit only (ambiguous since it has no
		REX prefix)
	(MOV) Added rr form going the other way, which is encoded
		differently
	(MOV) Changed immediates to offsets, which is more correct;
		also fixed MOV64o64a to have to a 64-bit offset
	(MOV) Fixed qualifiers
	(MOV) Added debug-register and condition-register moves
	(MOVZX) Added more forms
	(ADC, SUB, SBB, AND, OR, XOR) Added reverse forms, which
		(as with MOV) are encoded differently
	(ROL) Made REX.W required
	(BT) Uncommented mr form for disassembly only
	(CVT__2__) Added several missing non-intrinsic forms
	(LXADD, XCHG) Reordered operands to make more sense for
		MRMSrcMem
	(XCHG) Added register-to-register forms
	(XADD, CMPXCHG, XCHG) Added non-locked forms
* X86InstrSSE.td
	(CVTSS2SI, COMISS, CVTTPS2DQ, CVTPS2PD, CVTPD2PS, MOVQ)
		Added
* X86InstrFPStack.td
	(COM_FST0, COMP_FST0, COM_FI, COM_FIP, FFREE, FNCLEX, FNOP,
	 FXAM, FLDL2T, FLDL2E, FLDPI, FLDLG2, FLDLN2, F2XM1, FYL2X,
	 FPTAN, FPATAN, FXTRACT, FPREM1, FDECSTP, FINCSTP, FPREM,
	 FYL2XP1, FSINCOS, FRNDINT, FSCALE, FCOMPP, FXSAVE,
	 FXRSTOR)
		Added
	(FCOM, FCOMP) Added qualifiers
	(FSTENV, FSAVE, FSTSW) Fixed opcode names
	(FNSTSW) Added implicit register operand
* X86InstrInfo.td
	(opaque512mem) Added for FXSAVE/FXRSTOR
	(offset8, offset16, offset32, offset64) Added for MOV
	(NOOPW, IRET, POPCNT, IN, BTC, BTR, BTS, LSL, INVLPG, STR,
	 LTR, PUSHFS, PUSHGS, POPFS, POPGS, LDS, LSS, LES, LFS,
	 LGS, VERR, VERW, SGDT, SIDT, SLDT, LGDT, LIDT, LLDT,
	 LODSD, OUTSB, OUTSW, OUTSD, HLT, RSM, FNINIT, CLC, STC,
	 CLI, STI, CLD, STD, CMC, CLTS, XLAT, WRMSR, RDMSR, RDPMC,
	 SMSW, LMSW, CPUID, INVD, WBINVD, INVEPT, INVVPID, VMCALL,
	 VMCLEAR, VMLAUNCH, VMRESUME, VMPTRLD, VMPTRST, VMREAD,
	 VMWRITE, VMXOFF, VMXON) Added
	(NOOPL, POPF, POPFD, PUSHF, PUSHFD) Added qualifier
	(JO, JNO, JB, JAE, JE, JNE, JBE, JA, JS, JNS, JP, JNP, JL,
	 JGE, JLE, JG, JCXZ) Added 32-bit forms
	(MOV) Changed some immediate forms to offset forms
	(MOV) Added reversed reg-reg forms, which are encoded
		differently
	(MOV) Added debug-register and condition-register moves
	(CMOV) Added qualifiers
	(AND, OR, XOR, ADC, SUB, SBB) Added reverse forms, like MOV
	(BT) Uncommented memory-register forms for disassembler
	(MOVSX, MOVZX) Added forms
	(XCHG, LXADD) Made operand order make sense for MRMSrcMem
	(XCHG) Added register-register forms
	(XADD, CMPXCHG) Added unlocked forms
* X86InstrMMX.td
	(MMX_MOVD, MMV_MOVQ) Added forms
* X86InstrInfo.cpp: Changed PUSHFQ to PUSHFQ64 to reflect table
	change

* X86RegisterInfo.td: Added debug and condition register sets
* x86-64-pic-3.ll: Fixed testcase to reflect call qualifier
* peep-test-3.ll: Fixed testcase to reflect test qualifier
* cmov.ll: Fixed testcase to reflect cmov qualifier
* loop-blocks.ll: Fixed testcase to reflect call qualifier
* x86-64-pic-11.ll: Fixed testcase to reflect call qualifier
* 2009-11-04-SubregCoalescingBug.ll: Fixed testcase to reflect call
  qualifier
* x86-64-pic-2.ll: Fixed testcase to reflect call qualifier
* live-out-reg-info.ll: Fixed testcase to reflect test qualifier
* tail-opts.ll: Fixed testcase to reflect call qualifiers
* x86-64-pic-10.ll: Fixed testcase to reflect call qualifier
* bss-pagealigned.ll: Fixed testcase to reflect call qualifier
* x86-64-pic-1.ll: Fixed testcase to reflect call qualifier
* widen_load-1.ll: Fixed testcase to reflect call qualifier

llvm-svn: 91638
2009-12-18 00:01:26 +00:00
John McCall 753100cef3 Sundry dependent-name fixes flagged by clang++.
llvm-svn: 91636
2009-12-17 23:49:16 +00:00
Bill Wendling 3c13667d14 Revert accidental commit.
llvm-svn: 91635
2009-12-17 23:45:18 +00:00
Bill Wendling 819c356a09 Turn off critical edge splitting for landing pads. The introduction of a
non-landing pad basic block as the successor to a block that ends in an
unconditional jump will cause block folding to remove the added block as a
successor. Thus eventually removing it AND the landing pad entirely. Critical
edge splitting is an optimization, so we can safely turn it off when dealing
with landing pads.

llvm-svn: 91634
2009-12-17 23:42:32 +00:00
Jeffrey Yasskin 0de0ce11d8 Revert r91623 to unbreak the buildbots.
llvm-svn: 91632
2009-12-17 22:44:34 +00:00
Eli Friedman 250b119d98 Allow instcombine to combine "sext(a) >u const" to "a >u trunc(const)".
llvm-svn: 91631
2009-12-17 22:42:29 +00:00
Jeffrey Yasskin 2b73a4e90f Don't codegen available_externally functions. Fixes http://llvm.org/PR5735.
llvm-svn: 91626
2009-12-17 21:35:29 +00:00
Eli Friedman 7cc86b4cc6 Make the ptrtoint comparison simplification work if one side is a global.
llvm-svn: 91624
2009-12-17 21:27:47 +00:00
Evan Cheng e43b403c87 Remove an unused option.
llvm-svn: 91623
2009-12-17 21:23:58 +00:00
Chris Lattner cbc0804c71 tabs -> spaces.
llvm-svn: 91622
2009-12-17 21:23:46 +00:00
Eli Friedman 5842c9968a Slightly generalize transformation of memmove(a,a,n) so that it also applies
to memcpy. (Such a memcpy is technically illegal, but in practice is safe
and is generated by struct self-assignment in C code.)

llvm-svn: 91621
2009-12-17 21:07:31 +00:00
Jeffrey Yasskin 5908f1e27b Make Path use StringRef instead of std::string where possible.
llvm-svn: 91620
2009-12-17 21:02:39 +00:00
Bill Wendling 03b5aed7d8 Temporarily revert 91337. It's causing testcase failures.
$ svn merge -c -91337 https://llvm.org/svn/llvm-project/llvm/trunk
--- Reverse-merging r91337 into '.':
U    lib/CodeGen/AsmPrinter/DwarfException.cpp

llvm-svn: 91618
2009-12-17 20:41:01 +00:00
Steve Naroff d3ab107432 Fix Windows build breakage...
llvm-svn: 91617
2009-12-17 20:39:34 +00:00
Ken Dyck df5561db78 Introduce EVT::getHalfSizedIntegerVT() for use in ExpandUnalignedStore() in
LegalizeDAG.cpp. Unlike the code it replaces, which simply decrements the simple
type by one, getHalfSizedIntegerVT() searches for the smallest simple integer
type that is at least half the size of the type it is called on. This approach
has the advantage that it will continue working if a new value type (such as
i24) is added to MVT.

Also, in preparation for new value types, remove the assertions that
non-power-of-2 8-bit-mutiple types are Extended when legalizing extload and
truncstore operations.

llvm-svn: 91614
2009-12-17 20:09:43 +00:00
Chris Lattner 50272752fa finish cleaning up StructLayoutMap.
llvm-svn: 91612
2009-12-17 20:00:21 +00:00
Jeffrey Yasskin 28f244863e This fixes a memory leak in OpaqueType found by Google's internal heapchecker.
llvm-svn: 91611
2009-12-17 19:55:06 +00:00
Eric Christopher 2d1ffe028f Fix unused variable warning.
llvm-svn: 91609
2009-12-17 19:07:19 +00:00
Bob Wilson f3927b7994 Re-revert 91459. It's breaking the x86_64 darwin bootstrap.
llvm-svn: 91607
2009-12-17 18:34:24 +00:00
Evan Cheng ece104a0e1 Remove debugging code.
llvm-svn: 91604
2009-12-17 18:03:12 +00:00
Jim Grosbach 67584fe874 Add more detail for getting started on Windows.
Patch from jon.forums at gmail.com

llvm-svn: 91603
2009-12-17 17:18:11 +00:00
Ken Dyck 798493285c In LowerEXTRACT_VECTOR_ELT, force an i32 value type for PEXTWR instead of
incrementing the simple value type of the 16-bit type, which would give the
wrong type if an intemediate MVT (such as i24) were introduced.

llvm-svn: 91602
2009-12-17 15:31:52 +00:00
Evan Cheng 090ac0865a Revert 91280-91283, 91286-91289, 91291, 91293, 91295-91296. It apparently introduced a non-deterministic behavior in the optimizer somewhere.
llvm-svn: 91598
2009-12-17 09:39:49 +00:00
Mikhail Glushenkov 108b0682e4 Regenerate.
llvm-svn: 91595
2009-12-17 07:49:26 +00:00
Mikhail Glushenkov 1fe2678a06 Add a 'set_option' action for use in OptionPreprocessor.
llvm-svn: 91594
2009-12-17 07:49:16 +00:00
Mikhail Glushenkov 9bbd4eb9f5 Refactoring, no functionality change.
llvm-svn: 91593
2009-12-17 07:48:49 +00:00
Mikhail Glushenkov bea9ce8826 s/TokenizeCmdline/TokenizeCmdLine/
llvm-svn: 91592
2009-12-17 07:48:34 +00:00
Chandler Carruth 187220e3f5 Update CMake build to include HexDisassembler.cpp.
llvm-svn: 91589
2009-12-17 06:35:17 +00:00
Eli Friedman e67cae33e1 Aggressively flip compare constant expressions where appropriate; constant
folding in particular expects null to be on the RHS.

llvm-svn: 91587
2009-12-17 06:07:04 +00:00
Bob Wilson 1c00b6964f Fix a comment grammaro.
llvm-svn: 91584
2009-12-17 05:07:36 +00:00
Bob Wilson ff43ab88ff BIT_CONVERT nodes are used for vector types, too.
llvm-svn: 91582
2009-12-17 05:05:36 +00:00
Sean Callanan 7e64550747 Test harness for the LLVM disassembler. When invoked
with -disassemble, llvm-mc now accepts lines of the
form
0x00 0x00
and passes the resulting bytes to the disassembler for
the chosen (or default) target, printing the result.

llvm-svn: 91579
2009-12-17 01:49:59 +00:00
Evan Cheng aadf060b92 Revert this dag combine change:
Fold (zext (and x, cst)) -> (and (zext x), cst)

DAG combiner likes to optimize expression in the other way so this would end up cause an infinite looping.

llvm-svn: 91574
2009-12-17 00:40:05 +00:00
Johnny Chen 7f30b64dce Renamed "tCMNZ" to "tCMNz" to be consistent with other similar namings.
llvm-svn: 91571
2009-12-16 23:36:52 +00:00
John McCall 30f2ac714b Silence a clang warning about the deprecated (but perfectly reasonable in
context) increment-of-bool idiom.

llvm-svn: 91564
2009-12-16 20:31:50 +00:00
Daniel Dunbar b827e52638 Reapply r91392, it was only unmasking the bug, and since TOT is still broken having it reverted does no good.
llvm-svn: 91560
2009-12-16 20:10:05 +00:00
Daniel Dunbar ab42d42390 Reapply r91459, it was only unmasking the bug, and since TOT is still broken having it reverted does no good.
llvm-svn: 91559
2009-12-16 20:09:53 +00:00
Jim Grosbach 69461f50c1 Mark STREX* as earlyclobber for the success result register.
llvm-svn: 91555
2009-12-16 19:44:06 +00:00
Jim Grosbach 2a282f2f86 Add @earlyclobber TableGen constraint
llvm-svn: 91554
2009-12-16 19:43:02 +00:00
Bill Wendling 8478ed5d18 Remove superfluous 'extern' variable that was causing a warning with clang.
llvm-svn: 91552
2009-12-16 19:36:42 +00:00
Jakob Stoklund Olesen ec20a88a57 Reuse lowered phi nodes.
Tail duplication produces lots of identical phi nodes in different basic
blocks. Teach PHIElimination to reuse the join registers when lowering a phi
node that is identical to an already lowered node. This saves virtual
registers, and more importantly it avoids creating copies the the coalescer
doesn't know how to eliminate.

Teach LiveIntervalAnalysis about the phi joins with multiple uses.

This patch significantly reduces code size produced by -pre-regalloc-taildup.

llvm-svn: 91549
2009-12-16 18:55:53 +00:00
Daniel Dunbar 1482b5aa16 Fix one more missing this-> to placate that picky clang++.
llvm-svn: 91536
2009-12-16 11:38:03 +00:00
Daniel Dunbar 133efc317e Revert "Reapply 91184 with fixes and an addition to the testcase to cover the
problem", this broke llvm-gcc bootstrap for release builds on
x86_64-apple-darwin10.

This reverts commit db22309800b224a9f5f51baf76071d7a93ce59c9.

llvm-svn: 91534
2009-12-16 10:56:17 +00:00
Daniel Dunbar df45b70c1e Revert "Initial work on disabling the scheduler. This is a work in progress, and
this", this broke llvm-gcc bootstrap for release builds on
x86_64-apple-darwin10.

llvm-svn: 91533
2009-12-16 10:56:02 +00:00
Chris Lattner f278addbdc reapply my strstr optimization. I have reproduced the x86-64 bootstrap
miscompile (i386.o miscompares) but it happens both with and without
this patch.

llvm-svn: 91532
2009-12-16 09:32:05 +00:00
Chris Lattner 9527af246e fix more missing this->'s to placate clang++
llvm-svn: 91531
2009-12-16 09:17:12 +00:00
Chris Lattner 5f5fffc5b2 Fix a missing this-> that clang++ notices.
llvm-svn: 91530
2009-12-16 09:09:54 +00:00
Chris Lattner 4ea86c460a now that libsystem no longer uses SmallVector, we can move
SmallVectorBase::grow_pod out of line, finally satisfying PR3758.

llvm-svn: 91529
2009-12-16 08:44:24 +00:00
Chris Lattner a6fc9de9fc remove use of SmallVector from Path::makeUnique. Path::makeUnique
is not used by anything performance sensitive, so just use std::string.

llvm-svn: 91528
2009-12-16 08:40:44 +00:00
Chris Lattner e6be85661d eliminate an extraneous use of SmallVector in a case where
a fixed size buffer is perfectly fine.

llvm-svn: 91527
2009-12-16 08:35:54 +00:00
Chris Lattner 5c0917c175 factor out the grow() method for all pod implementations into one
common function.  It is still an inline method, which will be fixed next.

llvm-svn: 91526
2009-12-16 08:34:40 +00:00
Victor Hernandez 2003b90807 Use different name for argument and field
llvm-svn: 91524
2009-12-16 08:10:57 +00:00
Chris Lattner f684b9039d pull destroy_range and uninitialized_copy up to the
SmallVectorTemplateBase class, which allows us to statically
dispatch on isPodLike instead of dynamically.

llvm-svn: 91523
2009-12-16 08:09:23 +00:00
Chris Lattner acc0e62625 sink most of the meat in smallvector back from SmallVectorTemplateCommon
down into SmallVectorImpl.  This requires sprinking a ton of this->'s in,
but gives us a place to factor.

llvm-svn: 91522
2009-12-16 08:05:48 +00:00
Nick Lewycky 23fbd54cfe Make this test pass on Linux.
llvm-svn: 91521
2009-12-16 07:35:25 +00:00
Chris Lattner 8b8d01829e substantial refactoring of SmallVector, now most code is in SmallVectorTemplateCommon,
and there is a new SmallVectorTemplateBase class in between it and SmallVectorImpl.
SmallVectorTemplateBase can be specialized based on isPodLike.

llvm-svn: 91518
2009-12-16 06:55:45 +00:00
Victor Hernandez dd7418ae3f MDNodes that refer to an instruction are local to a function; in that case, explicitly keep track of the function they are local to
llvm-svn: 91497
2009-12-16 02:52:09 +00:00
Johnny Chen 466231ab92 Add encoding bits for some Thumb instructions. Plus explicitly set the top two
bytes of Inst to 0x0000 for the benefit of the Thumb decoder.

llvm-svn: 91496
2009-12-16 02:32:54 +00:00
Devang Patel c69d9607f8 XFAIL on ppc-darwin.
llvm-svn: 91495
2009-12-16 02:11:38 +00:00
Evan Cheng 1be6286028 Re-enable 91381 with fixes.
llvm-svn: 91489
2009-12-16 00:53:11 +00:00
Chris Lattner 177be32334 revert my strstr optimization, I'm told it breaks x86-64 bootstrap.
Will reapply with a fix when I get a chance.

llvm-svn: 91486
2009-12-16 00:46:02 +00:00
Dale Johannesen 56f041406d Do better with physical reg operands (typically, from inline asm)
in local register allocator.  If a reg-reg copy has a phys reg
input and a virt reg output, and this is the last use of the phys
reg, assign the phys reg to the virt reg.  If a reg-reg copy has
a phys reg output and we need to reload its spilled input, reload
it directly into the phys reg than passing it through another reg.

Following 76208, there is sometimes no dependency between the def of
a phys reg and its use; this creates a window where that phys reg
can be used for spilling (this is true in linear scan also).  This
is bad and needs to be fixed a better way, although 76208 works too
well in practice to be reverted.  However, there should normally be
no spilling within inline asm blocks.  The patch here goes a long way
towards making this actually be true.

llvm-svn: 91485
2009-12-16 00:29:41 +00:00
John McCall 826ca5630e Every anonymous namespace is different. Caught by clang++.
llvm-svn: 91481
2009-12-16 00:15:28 +00:00
John McCall 323c30c5f4 Explicit template instantiations must happen in the template's immediately
enclosing namespace.  Caught by clang++.

llvm-svn: 91480
2009-12-16 00:13:24 +00:00
Bill Wendling 2d5967d005 Helpful comment added. Some code cleanup. No functional change.
llvm-svn: 91479
2009-12-16 00:08:36 +00:00
Bill Wendling 3766491eee Initialize uninitialized variables.
llvm-svn: 91477
2009-12-16 00:01:27 +00:00
Bill Wendling 776ef4dd32 Initialize uninitialized variables.
llvm-svn: 91475
2009-12-16 00:00:18 +00:00
Jeffrey Yasskin e0d8e14e11 Change indirect-globals to use a dedicated allocIndirectGV. This lets us
remove start/finishGVStub and the BufferState helper class from the
MachineCodeEmitter interface.  It has the side-effect of not setting the
indirect global writable and then executable on ARM, but that shouldn't be
necessary.

llvm-svn: 91464
2009-12-15 22:42:46 +00:00
Bill Wendling 098a38b5ce Some command lines don't like numbers with leading zeros. Remove them.
llvm-svn: 91463
2009-12-15 22:42:19 +00:00
Bob Wilson e44756d7c2 Reapply 91184 with fixes and an addition to the testcase to cover the problem
found last time.  Instead of trying to modify the IR while iterating over it,
I've change it to keep a list of WeakVH references to dead instructions, and
then delete those instructions later.  I also added some special case code to
detect and handle the situation when both operands of a memcpy intrinsic are
referencing the same alloca.

llvm-svn: 91459
2009-12-15 22:00:51 +00:00
Daniel Dunbar c6d3c5ef76 lit: Improve error when gtest discovery fails.
llvm-svn: 91458
2009-12-15 22:00:37 +00:00
Dan Gohman c87c16b030 Revert 90628, which was incorrect.
llvm-svn: 91448
2009-12-15 20:21:44 +00:00
Chris Lattner a3aef788ec Fix GetConstantStringInfo to not look into MDString (it works on
real data, not metadata) and fix DbgInfoPrinter to not abuse
GetConstantStringInfo.

llvm-svn: 91444
2009-12-15 19:34:20 +00:00
Jim Grosbach 38c4f4b5d1 whitespace
llvm-svn: 91442
2009-12-15 19:28:13 +00:00
Devang Patel 1f4690c624 Add support to emit debug info for C++ namespaces.
llvm-svn: 91440
2009-12-15 19:16:48 +00:00
Chris Lattner 26ab363361 optimize strstr, PR5783
llvm-svn: 91438
2009-12-15 19:14:40 +00:00
Johnny Chen c28e629c2d Added encoding bits for the Thumb ISA. Initial checkin.
llvm-svn: 91434
2009-12-15 17:24:14 +00:00
Dan Gohman 265ce318b8 Delete an unused function.
llvm-svn: 91432
2009-12-15 16:30:09 +00:00
Chris Lattner 24aba42d04 add some other xforms that should be done as part of PR5783
llvm-svn: 91428
2009-12-15 09:05:13 +00:00
Chris Lattner 4179fa0357 a few improvements:
1. Use std::equal instead of reinventing it.
2. don't run dtors in destroy_range if element is pod-like.
3. Use isPodLike to decide between memcpy/uninitialized_copy 
   instead of is_class.  isPodLike is more generous in some cases.

llvm-svn: 91427
2009-12-15 08:34:01 +00:00
Chris Lattner 6087a3e76b hoist the begin/end/capacity members and a few trivial methods
up into the non-templated SmallVectorBase class.

llvm-svn: 91426
2009-12-15 08:29:22 +00:00
Chris Lattner 62e04783c0 improve isPodLike to know that all non-class types are pod.
llvm-svn: 91425
2009-12-15 07:40:44 +00:00
Chris Lattner 9c45e03664 Lang verified that SlotIndex is "pod like" even though it isn't a pod.
llvm-svn: 91423
2009-12-15 07:27:58 +00:00
Chris Lattner 45d040bd85 Remove isPod() from DenseMapInfo, splitting it out to its own
isPodLike type trait.  This is a generally useful type trait for
more than just DenseMap, and we really care about whether something
acts like a pod, not whether it really is a pod.

llvm-svn: 91421
2009-12-15 07:26:43 +00:00
Mikhail Glushenkov 66a664870b Convert llvmc tests to FileCheck.
llvm-svn: 91420
2009-12-15 07:21:14 +00:00
Mikhail Glushenkov 62b65ecf18 Support hook invocation from 'append_cmd'.
llvm-svn: 91419
2009-12-15 07:20:50 +00:00
Evan Cheng b3032962ef Fix an encoding bug.
llvm-svn: 91417
2009-12-15 06:49:02 +00:00
Chris Lattner a867a58a26 add an ALWAYS_INLINE macro, which does the obvious thing.
llvm-svn: 91416
2009-12-15 06:14:33 +00:00
Kenneth Uildriks 792f0913ee For fastcc on x86, let ECX be used as a return register after EAX and EDX
llvm-svn: 91410
2009-12-15 03:27:52 +00:00
John McCall 106c10881e Names from dependent base classes are not found by unqualified lookup.
llvm-svn: 91407
2009-12-15 03:10:26 +00:00
Evan Cheng fcb5453dc7 Disable 91381 for now. It's miscompiling ARMISelDAG2DAG.cpp.
llvm-svn: 91405
2009-12-15 03:07:11 +00:00
Mikhail Glushenkov 096fc103fb Validate the generated C++ code in llvmc tests.
Checks that the code generated by 'tblgen --emit-llvmc' can be actually
compiled. Also fixes two bugs found in this way:

- forward_transformed_value didn't work with non-list arguments
- cl::ZeroOrOne is now called cl::Optional

llvm-svn: 91404
2009-12-15 03:04:52 +00:00
Mikhail Glushenkov cb0721e363 Pipe 'grep' output to 'count'.
llvm-svn: 91403
2009-12-15 03:04:14 +00:00
Mikhail Glushenkov 2cb65bd5ab Allow $CALL(Hook, '$INFILE') for non-join tools.
llvm-svn: 91402
2009-12-15 03:04:02 +00:00
Mikhail Glushenkov 53ec77972e Small documentation update.
llvm-svn: 91401
2009-12-15 03:03:37 +00:00
Evan Cheng 852c486946 Make 91378 more conservative.
1. Only perform (zext (shl (zext x), y)) -> (shl (zext x), y) when y is a constant. This makes sure it remove at least one zest.
2. If the shift is a left shift, make sure the original shift cannot shift out bits.

llvm-svn: 91399
2009-12-15 03:00:32 +00:00
John McCall 4ea24f19f5 You can't use typedefs to declare template member specializations, and
clang enforces it.

llvm-svn: 91397
2009-12-15 02:35:24 +00:00
Bill Wendling 07beddceb7 Initial work on disabling the scheduler. This is a work in progress, and this
stuff isn't used just yet.

We want to model the GCC `-fno-schedule-insns' and `-fno-schedule-insns2'
flags. The hypothesis is that the people who use these flags know what they are
doing, and have hand-optimized the C code to reduce latencies and other
conflicts.

The idea behind our scheme to turn off scheduling is to create a map "on the
side" during DAG generation. It will order the nodes by how they appeared in the
code. This map is then used during scheduling to get the ordering.

llvm-svn: 91392
2009-12-15 01:54:51 +00:00
Evan Cheng 45430bbfaa Tail duplication should zap a copy it inserted for SSA update if the copy is the only use of its source.
llvm-svn: 91390
2009-12-15 01:44:10 +00:00
Evan Cheng 0e8b9e32d1 Use sbb x, x to materialize carry bit in a GPR. The result is all one's or all zero's.
llvm-svn: 91381
2009-12-15 00:53:42 +00:00
Evan Cheng d1521ef40c Fold (zext (and x, cst)) -> (and (zext x), cst).
llvm-svn: 91380
2009-12-15 00:52:11 +00:00
Daniel Dunbar 1542d735d9 NNT: Make sure stderr for build commands goes to log file, as intended but misdirected.
llvm-svn: 91379
2009-12-15 00:41:47 +00:00
Evan Cheng ca7c690d3b Propagate zest through logical shift.
llvm-svn: 91378
2009-12-15 00:41:36 +00:00
Eric Christopher d5218331f7 Formatting.
llvm-svn: 91377
2009-12-15 00:40:55 +00:00
Bill Wendling e8a525a196 Revert these. They may have been causing 483_xalancbmk to fail:
$ svn merge -c -91161 https://llvm.org/svn/llvm-project/llvm/trunk
--- Reverse-merging r91161 into '.':
U    lib/CodeGen/BranchFolding.cpp
U    lib/CodeGen/MachineBasicBlock.cpp
$ svn merge -c -91113 https://llvm.org/svn/llvm-project/llvm/trunk
--- Reverse-merging r91113 into '.':
G    lib/CodeGen/MachineBasicBlock.cpp
$ svn merge -c -91101 https://llvm.org/svn/llvm-project/llvm/trunk
--- Reverse-merging r91101 into '.':
U    include/llvm/CodeGen/MachineBasicBlock.h
G    lib/CodeGen/MachineBasicBlock.cpp
$ svn merge -c -91092 https://llvm.org/svn/llvm-project/llvm/trunk
--- Reverse-merging r91092 into '.':
G    include/llvm/CodeGen/MachineBasicBlock.h
G    lib/CodeGen/MachineBasicBlock.cpp

llvm-svn: 91376
2009-12-15 00:39:24 +00:00
Jim Grosbach ea8f6e31a0 nand atomic requires opposite operand ordering
llvm-svn: 91371
2009-12-15 00:12:35 +00:00
Dan Gohman cecad35728 Fix integer cast code to handle vector types.
llvm-svn: 91362
2009-12-14 23:40:38 +00:00
Dan Gohman 28dea2a58b Move Flag and isVoid after the vector types, since bit arithmetic with
those enum values is less common.

llvm-svn: 91361
2009-12-14 23:36:03 +00:00
Dan Gohman 897a5ac615 Fix these asserts to check the invariant that the code actually
depends on.

llvm-svn: 91360
2009-12-14 23:34:36 +00:00
Dan Gohman 2e1cf19924 Update this comment.
llvm-svn: 91356
2009-12-14 23:13:31 +00:00
Dan Gohman 6453a4e2ab Fix this to properly clear the FastISel debug location. Thanks to
Bill for spotting this!

llvm-svn: 91355
2009-12-14 23:08:09 +00:00
Bob Wilson cc70e3b60d Rearrange rules to add missing dependency and allow parallel makes.
llvm-svn: 91352
2009-12-14 22:44:22 +00:00
Johnny Chen bee6f16fed Add encoding bits "let Inst{11-4} = 0b00000000;" to BR_JTr to disambiguate
between BR_JTr and STREXD.

llvm-svn: 91339
2009-12-14 21:51:34 +00:00
Bill Wendling 1bdf5d6f75 The CIE says that the LSDA point in the FDE section is an "sdata4". That's fine,
but we need it to actually be 4-bytes in the FDE.

llvm-svn: 91337
2009-12-14 21:49:44 +00:00
Jim Grosbach 3974a80307 v6 sync insn copy/paste error
llvm-svn: 91333
2009-12-14 21:33:32 +00:00
Jim Grosbach 3c4f04112a Add ARMv6 memory and sync barrier instructions
llvm-svn: 91329
2009-12-14 21:24:16 +00:00
Johnny Chen acba3b0ae2 Fixed encoding bits typo of ldrexd/strexd.
llvm-svn: 91327
2009-12-14 21:01:46 +00:00
Jim Grosbach 57ccc19617 Thumb2 atomic operations
llvm-svn: 91321
2009-12-14 20:14:59 +00:00
Dan Gohman 1cfbfc86cf Move several function bodies which are rarely inlined out of line.
llvm-svn: 91319
2009-12-14 19:43:09 +00:00
Chris Lattner 726e452ccb fix an obvious bug found by clang++ and collapse a redundant if.
Here's the diagnostic from clang:

/Volumes/Data/dgregor/Projects/llvm/lib/Target/CppBackend/CPPBackend.cpp:989:23: warning: 'gv' is always NULL in this context
        printConstant(gv);
                      ^
1 diagnostic generated.

llvm-svn: 91318
2009-12-14 19:34:32 +00:00
Dan Gohman fd5de58ec1 Micro-optimize these functions in the case where they are not inlined.
llvm-svn: 91316
2009-12-14 19:32:31 +00:00
Jim Grosbach fed3d088ce correct selection requirements for thumb2 vs. arm versions of the barrier intrinsics
llvm-svn: 91313
2009-12-14 19:24:11 +00:00
Eric Christopher 1dba6ea72f Add radar fixed in comment.
llvm-svn: 91312
2009-12-14 19:07:25 +00:00
Jim Grosbach 20ac87de13 add Thumb2 atomic and memory barrier instruction definitions
llvm-svn: 91310
2009-12-14 18:56:47 +00:00
Jim Grosbach 3cdb555e0f whitespace
llvm-svn: 91307
2009-12-14 18:36:32 +00:00
Jim Grosbach 5e0d2a2df6 ARM memory barrier instructions are not predicable
llvm-svn: 91305
2009-12-14 18:31:20 +00:00
Daniel Dunbar 8165f02e8c NNT: Use [e]grep -a when scanning logs, its possibly they will have non-text
characters in them, in which case the grep will just return 'Binary file
matches' and the whole thing falls over.

llvm-svn: 91302
2009-12-14 17:58:33 +00:00
Daniel Dunbar 37e0439b17 NNT: Always create the -sentdata.txt file.
llvm-svn: 91301
2009-12-14 17:58:27 +00:00
Dan Gohman 2a07fd94f1 Clear the Processed set when it is no longer used, and clear the
IVUses list in releaseMemory().

llvm-svn: 91296
2009-12-14 17:35:17 +00:00
Dan Gohman fbeec7270c Fix a thinko; isNotAlreadyContainedIn had a built-in negative, so the
condition was inverted when the code was converted to contains().

llvm-svn: 91295
2009-12-14 17:31:01 +00:00
Dan Gohman 416d5b7361 Remove unnecessary #includes.
llvm-svn: 91293
2009-12-14 17:19:06 +00:00
Dan Gohman 66e7d522fe Make the IVUses member private.
llvm-svn: 91291
2009-12-14 17:14:32 +00:00
Dan Gohman 163fb26927 Instead of having a ScalarEvolution pointer member in BasedUser, just pass
the ScalarEvolution pointer into the functions which need it.

llvm-svn: 91289
2009-12-14 17:12:51 +00:00
Dan Gohman 8dbd4e3d16 Don't bother cleaning up if there's nothing to clean up.
llvm-svn: 91288
2009-12-14 17:10:44 +00:00
Dan Gohman 88c7e61c5b Delete an unused variable.
llvm-svn: 91287
2009-12-14 17:08:09 +00:00
Dan Gohman 57eb6cda7a Drop Loop::isNotAlreadyContainedIn in favor of Loop::contains. The
former was just exposing a LoopInfoBase implementation detail.

llvm-svn: 91286
2009-12-14 17:06:50 +00:00
Jim Grosbach 9d6410d040 add ldrexd/strexd instructions
llvm-svn: 91284
2009-12-14 17:02:55 +00:00
Dan Gohman 838f604543 LSR itself doesn't need LoopInfo.
llvm-svn: 91283
2009-12-14 17:02:34 +00:00
Dan Gohman 273e692952 LSR itself doesn't need DominatorTree.
llvm-svn: 91282
2009-12-14 16:57:08 +00:00
Dan Gohman c3513095cf Remove the code in LSR that manually hoists expansions out of loops;
SCEVExpander does this automatically.

llvm-svn: 91281
2009-12-14 16:52:55 +00:00
Dan Gohman ec2a7c58e8 Minor code cleanups.
llvm-svn: 91280
2009-12-14 16:37:29 +00:00
Devang Patel 525dda05a0 Use DW_AT_specification to point to DIE describing function declaration.
llvm-svn: 91278
2009-12-14 16:18:45 +00:00
Shantonu Sen 0c20054cc4 Remove empty file completely
llvm-svn: 91277
2009-12-14 14:15:15 +00:00
Torok Edwin 022336adf7 Add "generic" fallback.
gcc warned that the function may not have a return value, indeed
for non-intel and non-amd X86 CPUs it is right (VIA, etc.).

llvm-svn: 91276
2009-12-14 12:38:18 +00:00
Lang Hames c73ca2baca Added CalcSpillWeights to CMakeLists.
llvm-svn: 91275
2009-12-14 07:43:25 +00:00
Bill Wendling 277381f69a Whitespace changes, comment clarification. No functional changes.
llvm-svn: 91274
2009-12-14 06:51:19 +00:00
Lang Hames d17e296301 Moved spill weight calculation out of SimpleRegisterCoalescing and into its own pass: CalculateSpillWeights.
llvm-svn: 91273
2009-12-14 06:49:42 +00:00
Chris Lattner aaa6ac10a6 revert r91184, because it causes a crash on a .bc file I just
sent to Bob.

llvm-svn: 91268
2009-12-14 05:11:02 +00:00
Jim Grosbach 8f3c70e909 atomic binary operations up to 32-bits wide.
llvm-svn: 91260
2009-12-14 04:22:04 +00:00
Mikhail Glushenkov 897889ef6b Add a test for the 'init' option property.
llvm-svn: 91259
2009-12-14 04:06:38 +00:00
Jeffrey Yasskin 8c17e6de2b Reinstate r91208 to fix available_externally linkage for globals, with
nlewycky's fix to add -rdynamic so the JIT can look symbols up in Linux builds
of the JITTests binary.

llvm-svn: 91250
2009-12-13 20:30:32 +00:00
Torok Edwin abdc1c274b Using _MSC_VER there was wrong, better just use the already existing ifdefs for
x86 CPU detection for the X86 getHostCPUName too, and create a simple
getHostCPUName that returns "generic" for all else.

llvm-svn: 91240
2009-12-13 08:59:40 +00:00
Chandler Carruth dcf5dacb2c Don't leave pointers uninitialized in the default constructor. GCC complains
about the potential use of these uninitialized members under certain conditions.

llvm-svn: 91239
2009-12-13 07:04:45 +00:00
Anton Korobeynikov 94b6310136 Fix weird typo which leads to unallocated memory access for nodes with 4 results.
llvm-svn: 91233
2009-12-13 01:00:59 +00:00
Anton Korobeynikov 45800ce646 Do not allow uninitialize access during debug printing
llvm-svn: 91232
2009-12-13 01:00:32 +00:00
Eli Friedman 96cf7f42b0 More info on this transformation.
llvm-svn: 91230
2009-12-12 23:23:43 +00:00
Eli Friedman 8eada9f580 Remove some stuff that's already implemented. Also, remove the note about
merging x >u 5 and x <s 20 because it's impossible to implement.

llvm-svn: 91228
2009-12-12 21:41:48 +00:00
Daniel Dunbar e4b5f9f54c Update install-clang target for clang-cc removal.
llvm-svn: 91226
2009-12-12 21:17:54 +00:00
Evan Cheng 26fdd7265b Disable r91104 for x86. It causes partial register stall which pessimize code in 32-bit.
llvm-svn: 91223
2009-12-12 20:03:14 +00:00
Anton Korobeynikov d8f320947f Implement variable-width shifts.
No testcase yet - it seems we're exposing generic codegen bugs.

llvm-svn: 91221
2009-12-12 18:55:37 +00:00
Evan Cheng 3974c8de51 Add comment about potential partial register stall.
llvm-svn: 91220
2009-12-12 18:55:26 +00:00
Evan Cheng 6d6eaafa8c Fix an obvious bug. No test case since LEA16r is not being used.
llvm-svn: 91219
2009-12-12 18:51:56 +00:00
Torok Edwin 5c9429fa47 Enable CPU detection when using MS VS 2k8 too.
MSVS2k8 doesn't define __i386__, hence all the CPU detection code was disabled.
Enable it by looking for _MSC_VER.

llvm-svn: 91217
2009-12-12 12:42:31 +00:00
Benjamin Kramer 401e6093c9 Fix some CHECK lines which were ignored by accident.
llvm-svn: 91214
2009-12-12 09:25:50 +00:00
Jeffrey Yasskin 9ad6ba3766 Revert r91208. Something on Linux prevents the JIT from looking up a symbol
defined in the test, and I don't have time tonight to figure it out.

llvm-svn: 91209
2009-12-12 06:18:46 +00:00
Jeffrey Yasskin 2d2dcdcbf7 Fix available_externally linkage for globals. It's probably still not
supported by emitGlobals, but I don't have a test case for that.

llvm-svn: 91208
2009-12-12 05:58:14 +00:00
Jeffrey Yasskin 7f1c9c2ff6 Make it easier to use the llvm_unreachable and DEBUG macros without "using
namespace llvm" by qualifying their implementations with ::llvm::.

llvm-svn: 91206
2009-12-12 04:08:32 +00:00