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Author SHA1 Message Date
Eli Friedman
19c5c57885 Simplify/generalize the xor+add->sign-extend instcombine. 
llvm-svn: 94943
 2010-01-31 04:29:12 +00:00
Eli Friedman
58c7936637 Add a small transform: transform -(X<<Y) to (-X<<Y) when the shift has a single 
use and X is free to negate.

llvm-svn: 94941
 2010-01-31 02:30:23 +00:00
Sean Callanan
5458663492 Moved InstallLexer() from the X86-specific AsmLexer 
to the TargetAsmLexer class so that clients can
actually use the TargetAsmLexer they get from a
Target.

llvm-svn: 94940
 2010-01-31 02:28:18 +00:00
Evan Cheng
c2f3c20680 Do not mark no-return calls tail calls. It'll screw up special calls like longjmp and it doesn't make much sense for performance reason. If my logic is faulty, please let me know. 
llvm-svn: 94937
 2010-01-31 00:59:31 +00:00
Bruno Cardoso Lopes
dcd6d1450f Fix PR6144. Reload GP before the emission of CALLSEQ_END to guarantee the right reload order 
llvm-svn: 94915
 2010-01-30 18:32:07 +00:00
Bruno Cardoso Lopes
a82b8ade4d Fix mov.d out register by using the FFR register class directly 
llvm-svn: 94914
 2010-01-30 18:29:19 +00:00
Anton Korobeynikov
f7651ec593 Fix a gross typo: ARMv6+ may or may not support unaligned memory operations. 
Even if they are suported by the core, they can be disabled
(this is just a configuration bit inside some register).

Allow unaligned memops on darwin and conservatively disallow them otherwise.

llvm-svn: 94889
 2010-01-30 14:08:12 +00:00
Bob Wilson
0f04082970 Check alignment of loads when deciding whether it is safe to execute them 
unconditionally.  Besides checking the offset, also check that the underlying
object is aligned as much as the load itself.

llvm-svn: 94875
 2010-01-30 04:42:39 +00:00
Evan Cheng
40ae22e14d Allow more tailcall optimization: calls with inputs that are all passed in registers. 
llvm-svn: 94873
 2010-01-30 01:22:00 +00:00
Evan Cheng
5acba193ef Don't forget to transfer target flag when inserting a tailcall instruction. 
llvm-svn: 94872
 2010-01-30 01:16:15 +00:00
Devang Patel
70713c75da Emit declaration DIE for the class static variables. 
llvm-svn: 94870
 2010-01-30 01:08:30 +00:00
Daniel Dunbar
23e8bc782c MC/X86 AsmParser: Handle absolute memory operands correctly. We were doing 
something totally broken and parsing them as immediates, but the .td file also
had the wrong match class so things sortof worked. Except, that is, that we
would parse
  movl $0, %eax
as
  movl 0, %eax
Feel free to guess how well that worked.

llvm-svn: 94869
 2010-01-30 01:02:48 +00:00
Daniel Dunbar
0016281dc2 AsmMatcher: Create operand classes before use, apparently records aren't visited 
in the order they were declared.

llvm-svn: 94868
 2010-01-30 01:02:37 +00:00
Dale Johannesen
9774a29dc0 Fix a case where debug_value could affect codegen. 
llvm-svn: 94866
 2010-01-30 00:57:47 +00:00
Bob Wilson
e979c978e0 Use more specific types to avoid casts. No functionality change. 
llvm-svn: 94863
 2010-01-30 00:41:10 +00:00
Bob Wilson
ccd1585ba8 Remove ARM-specific calling convention from this test. Target data is 
needed for this test, but otherwise, there's nothing ARM-specific about
it and no need to specify the calling convention.

llvm-svn: 94862
 2010-01-30 00:40:23 +00:00
Daniel Dunbar
ee85d3388b X86.td: Refactor to bring operands that use print_pcrel_imm together. 
llvm-svn: 94861
 2010-01-30 00:24:12 +00:00
Daniel Dunbar
08265d2e9b FileCheck: When looking for "possible matches", only compare against the prefix 
line. Turns out edit_distance can be slow if the string we are scanning for
happens to be quite large.

llvm-svn: 94860
 2010-01-30 00:24:06 +00:00
Daniel Dunbar
e92f9cffdb AsmMatcher/X86: Separate out sublass for memory operands that have no segment 
register, and use to cleanup a FIXME in X86AsmParser.cpp.

llvm-svn: 94859
 2010-01-30 00:24:00 +00:00
Jakob Stoklund Olesen
e3fd8b5848 Keep iterating over all uses when meeting a phi node in AllUsesOfValueWillTrapIfNull(). 
This bug was exposed by my inliner cost changes in r94615, and caused failures
of lencod on most architectures when building with LTO.

This patch fixes lencod and 464.h264ref on x86-64 (and likely others).

llvm-svn: 94858
 2010-01-29 23:54:14 +00:00
Daniel Dunbar
b0a870919b MC/X86: Add a nice X86 assembler matcher test case from Kevin Enderby. 
- This test case is auto generated, and has been verified to round-trip
   correctly through llvm-mc by checking the assembled .o file before and after
   piping through llvm-mc. It will be extended over time as the matcher grows
   support for more instructions.

llvm-svn: 94857
 2010-01-29 23:32:40 +00:00
Johnny Chen
377da9a33c Modified encoding bits specification for VFP instructions. In particular, the D 
bit (Inst{22}) and the M bit (Inst{5}) should be left unspecified.  For binary
format instructions, Inst{6} and Inst{4} need to specified for proper decodings.

llvm-svn: 94855
 2010-01-29 23:21:10 +00:00
Dan Gohman
c5a2b73589 Print a comment next to "materializable" global values, to distinguish 
them from values that are not actually defined in the module.

llvm-svn: 94854
 2010-01-29 23:12:36 +00:00
Evan Cheng
5964860340 PPC is not ready for sibcall optimization. 
llvm-svn: 94853
 2010-01-29 23:05:56 +00:00
Bob Wilson
71bc5f0787 Preserve load alignment in instcombine transformations. I've been unable to 
create a testcase where this matters.  The select+load transformation only
occurs when isSafeToLoadUnconditionally is true, and in those situations,
instcombine also changes the underlying objects to be aligned.  This seems
like a good idea regardless, and I've verified that it doesn't pessimize
the subsequent realignment.

llvm-svn: 94850
 2010-01-29 22:39:21 +00:00
Dan Gohman
4ce1281b20 Minor code cleanup. 
llvm-svn: 94848
 2010-01-29 21:57:46 +00:00
Dan Gohman
b550d3a78e Skip whitespace when looking for a potential intended match. 
Before:

<stdin>:94:1: note: possible intended match here
 movsd 4096(%rsi), %xmm0
^

After:
<stdin>:94:2: note: possible intended match here
 movsd 4096(%rsi), %xmm0
 ^

llvm-svn: 94847
 2010-01-29 21:55:16 +00:00
Dan Gohman
ef102f1ed3 Fix the position of the caret in the FileCheck error message. 
Before:

test/CodeGen/X86/lsr-reuse.ll:52:34: error: expected string not found in input
; CHECK: movsd -2048(%rsi), %xmm0
                                 ^

After:

test/CodeGen/X86/lsr-reuse.ll:52:10: error: expected string not found in input
; CHECK: movsd -2048(%rsi), %xmm0
         ^

llvm-svn: 94846
 2010-01-29 21:53:18 +00:00
Junjie Gu
4d7286efef Make sure the size is doubled (not 4x). 
llvm-svn: 94845
 2010-01-29 21:34:26 +00:00
Sean Callanan
a6a8be8712 Removed symbols from .exports that are not yet in 
the library.

llvm-svn: 94844
 2010-01-29 21:21:44 +00:00
Dale Johannesen
9e9159cd4d Add assertion to humor the paranoid. 
llvm-svn: 94843
 2010-01-29 21:21:28 +00:00
Victor Hernandez
8102f790ac We were not writing bitcode for function-local metadata whose operands have been erased (making it not have any more function-local operands) 
llvm-svn: 94842
 2010-01-29 21:19:19 +00:00
Eric Christopher
47d90f7adb Revert my last couple of patches. They appear to have broken bison. 
llvm-svn: 94841
 2010-01-29 21:16:24 +00:00
Jeffrey Yasskin
6838a27b47 Rename two IRReader.h functions to indicate that they return a Module 
that loads its contents lazily from bitcode.  I think these are the
only remaining mis-named functions.

llvm-svn: 94840
 2010-01-29 21:11:04 +00:00
Bob Wilson
bb651db10d Use uint64_t instead of unsigned for offsets and sizes. 
llvm-svn: 94835
 2010-01-29 20:34:28 +00:00
Bob Wilson
f897b7b37e Improve isSafeToLoadUnconditionally to recognize that GEPs with constant 
indices are safe if the result is known to be within the bounds of the
underlying object.

llvm-svn: 94829
 2010-01-29 19:19:08 +00:00
Jeffrey Yasskin
394da72ecc Belatedly document r85295 and r85330. 
llvm-svn: 94825
 2010-01-29 19:10:38 +00:00
Devang Patel
022d4a7fc0 Add size and location info in DW_TAG_class_type descriptor. 
llvm-svn: 94822
 2010-01-29 18:34:58 +00:00
Devang Patel
c91ba40a59 Before inserting llvm.dbg.declare intrinsic at the end of a basic block, check whether the basic block has a terminator or not. 
This API is used by clang and the test case is test/CodeGen/debug-info-crash.c in clang module.

llvm-svn: 94820
 2010-01-29 18:30:57 +00:00
Benjamin Kramer
fbfb029ab0 Fix MSVC build. 
llvm-svn: 94809
 2010-01-29 15:19:06 +00:00
Benjamin Kramer
cae092b08b Convert some users of ftostr to raw_ostream. 
llvm-svn: 94808
 2010-01-29 14:42:22 +00:00
Benjamin Kramer
326bcaa5f9 Use llvm::format instead of ftostr (which just calls sprintf). 
llvm-svn: 94807
 2010-01-29 14:40:33 +00:00
Duncan Sands
6b277c2823 Change the SREM case to match the logic in the IR version ComputeMaskedBits. 
llvm-svn: 94805
 2010-01-29 09:45:26 +00:00
Evan Cheng
2cbd1b19db Catch more trivial tail call opportunities: no inputs and output types match. 
llvm-svn: 94804
 2010-01-29 06:45:59 +00:00
Duncan Sands
d6baca9159 Having RHSKnownZero and RHSKnownOne be alternative names for KnownZero and KnownOne 
(via APInt &RHSKnownZero = KnownZero, etc) seems dangerous and confusing to me: it
is easy not to notice this, and then wonder why KnownZero/RHSKnownZero changed
underneath you when you modified RHSKnownZero/KnownZero etc.  So get rid of this.
No intended functionality change (tested with "make check" + llvm-gcc bootstrap).

llvm-svn: 94802
 2010-01-29 06:18:46 +00:00
Duncan Sands
6f0edf859c It looks like the changes to the SRem logic of SimplifyDemandedUseBits 
(fix for PR6165) are needed here too.

llvm-svn: 94801
 2010-01-29 06:18:37 +00:00
Daniel Dunbar
f65b05e7e1 FileCheck: Switch "possible match" calculation to use StringRef::edit_distance. 
- Thanks Doug, who is obviously less lazy than me!

llvm-svn: 94795
 2010-01-29 03:22:19 +00:00
Eric Christopher
f01379e6c2 Make strcpy_chk lower to strcpy if we have a safe size. 
llvm-svn: 94783
 2010-01-29 01:37:11 +00:00
Sean Callanan
2112298100 Quick fix to make the header file for the enhanced 
disassembly information have a better comment (and
better guard macros).

llvm-svn: 94781
 2010-01-29 01:34:29 +00:00
Sean Callanan
5d23b70461 Added a bare-bones Makefile to build the enhanced disassembly 
library as a static and a shared library.  Added dependencies
so the target-specific enhanced disassembly info tables are
built before the library.

llvm-svn: 94780
 2010-01-29 01:30:01 +00:00