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Author SHA1 Message Date
Chris Lattner
21bbaf49d5 1) Use the new SimplifyInstructionsInBlock routine instead of the copy 
in JT.

2) When cloning blocks for PHI or xor conditions, use
instsimplify to simplify the code as we go.  This allows us to 
squish common cases early in JT which opens up opportunities for
subsequent iterations, and allows it to completely simplify the
testcase.

llvm-svn: 93253
 2010-01-12 20:41:47 +00:00
Chris Lattner
87f86498c3 add a helper function. 
llvm-svn: 93251
 2010-01-12 19:40:54 +00:00
Devang Patel
1d9c156df2 Use Twine, instead of StringRef, for consistency. 
llvm-svn: 93249
 2010-01-12 18:57:56 +00:00
Devang Patel
2a6c413df3 Use ilist_tratis to autoinsert and remove NamedMDNode from MDSymbolTable. 
llvm-svn: 93247
 2010-01-12 18:34:06 +00:00
Evan Cheng
bc0b06fb16 Eliminate or_not_add and just use AddedComplexity so isel tries or_is_add patterns first. 
llvm-svn: 93245
 2010-01-12 18:31:19 +00:00
Evan Cheng
0dddace5f1 Add nounwind. 
llvm-svn: 93244
 2010-01-12 18:29:23 +00:00
Duncan Sands
395053f13a Revert commit 93204, since it causes the assembler to barf 
on x86-64 linux with messages like this:
Error: Incorrect register `%r14' used with `l' suffix

llvm-svn: 93242
 2010-01-12 17:46:16 +00:00
Duncan Sands
1c71358944 Fix typo. 
llvm-svn: 93235
 2010-01-12 08:30:46 +00:00
Duncan Sands
f558d05561 Tweak commit 91745, which changed target data for both Mingw and Cygwin, 
to not touch Cygwin: the change caused llvm-gcc build failures due to
long double getting the wrong size.  Patch by Aaron Gray.

llvm-svn: 93234
 2010-01-12 08:21:07 +00:00
Dan Gohman
a48d524fbc Make several tests less fragile. 
llvm-svn: 93230
 2010-01-12 04:52:47 +00:00
Dan Gohman
51b3e804dc Reapply the MOV64r0 patch, with a fix: MOV64r0 clobbers EFLAGS. 
llvm-svn: 93229
 2010-01-12 04:42:54 +00:00
Dan Gohman
2cd1b789c7 Update a partially obsolete comment. 
llvm-svn: 93228
 2010-01-12 04:32:35 +00:00
Dan Gohman
da0bcb49b5 Fix a typo in a comment. 
llvm-svn: 93227
 2010-01-12 04:30:26 +00:00
Chris Lattner
bc0016437d tidy up 
llvm-svn: 93222
 2010-01-12 02:07:50 +00:00
Chris Lattner
774e3967ad Teach jump threading to duplicate small blocks when the branch 
condition is a xor with a phi node.  This eliminates nonsense
like this from 176.gcc in several places:

 LBB166_84:
        testl   %eax, %eax
-       setne   %al
-       xorb    %cl, %al
-       notb    %al
-       testb   $1, %al
-       je      LBB166_85
+       je      LBB166_69
+       jmp     LBB166_85

This is rdar://7391699

llvm-svn: 93221
 2010-01-12 02:07:17 +00:00
Dale Johannesen
108d0fd4a9 Add MO_Metadata as an operand kind. Not used yet. 
llvm-svn: 93220
 2010-01-12 02:01:53 +00:00
Evan Cheng
e5b545fd60 Add TargetInstrInfo::isCoalescableInstr. It returns true if the specified 
instruction is copy like where the source and destination registers can
overlap. This is to be used by the coalescable to coalesce the source and
destination registers of instructions like X86::MOVSX64rr32. Apparently
some crazy people believe the coalescer is too simple.

llvm-svn: 93210
 2010-01-12 00:09:37 +00:00
Chris Lattner
d6d8cc7b37 some cleanup, and make it obvious that ProcessJumpOnPHI only works 
on branches by renaming it and checking for a branch at the call site.

llvm-svn: 93208
 2010-01-11 23:41:09 +00:00
Chris Lattner
1549da6af4 disable this testcase, PR5997 
llvm-svn: 93206
 2010-01-11 23:18:33 +00:00
Evan Cheng
a93b476689 Add manual ISD::OR fastisel selection routines. TableGen is no longer autogen them after 93152 and 93191. 
llvm-svn: 93204
 2010-01-11 22:59:27 +00:00
Victor Hernandez
d0abf2df95 Add documentation for llvm.dbg.value intrinsic 
llvm-svn: 93203
 2010-01-11 22:53:48 +00:00
Chris Lattner
a8cabeeecb reenable the piece that turns trunc(zext(x)) -> x even if zext has multiple uses, 
codegen has no apparent problem with the trunc version of this, because it turns
into a simple subreg idiom

llvm-svn: 93202
 2010-01-11 22:49:40 +00:00
Chris Lattner
2749cc2036 Disable folding sext(trunc(x)) -> x (and other similar cast/cast cases) when the 
trunc has multiple uses.  Codegen is not able to coalesce the subreg case 
correctly and so this leads to higher register pressure and spilling (see PR5997).

This speeds up 256.bzip2 from 8.60 -> 8.04s on my machine, ~7%.

llvm-svn: 93200
 2010-01-11 22:45:25 +00:00
Victor Hernandez
1ca202f9ea Consolidate ConvertGlobalValIDToValue, ConvertGlobalOrMetadataValIDToValue, and ConvertValIDToValue into a more powerful ConvertValIDToValue() that does all three's work 
llvm-svn: 93197
 2010-01-11 22:31:58 +00:00
Tobias Grosser
50b864035e Remove trailing white spaces in post dominators header file 
llvm-svn: 93195
 2010-01-11 22:22:46 +00:00
Tobias Grosser
5b16958edc Add getNode() to post dominators. 
Implement the same interface as already available for dominators.

llvm-svn: 93194
 2010-01-11 22:22:32 +00:00
Evan Cheng
bd938ebc90 Extend r93152 to work on OR r, r. If the source set bits are known not to overlap, then select as an ADD instead. 
llvm-svn: 93191
 2010-01-11 22:03:29 +00:00
Chris Lattner
644f29ddf5 reduce this to a sensible testcase. 
llvm-svn: 93189
 2010-01-11 21:58:19 +00:00
David Greene
5d479fa341 Shorten up this testcase. 
llvm-svn: 93187
 2010-01-11 21:50:35 +00:00
Evan Cheng
bc84a42d7b Revert 93158. It's breaking quite a few x86_64 tests. 
llvm-svn: 93185
 2010-01-11 21:13:41 +00:00
Jakob Stoklund Olesen
f1c71ef6ba Avoid adding PHI arguments for a predecessor that has gone away when a BRCOND was constant folded. 
This fixes PR5980.

llvm-svn: 93184
 2010-01-11 21:02:33 +00:00
Benjamin Kramer
400ab557d3 Remove unused string functions. 
llvm-svn: 93183
 2010-01-11 20:33:12 +00:00
Evan Cheng
4548543b0b Do not turn 8-bit OR to ADD since ADD8ri is not 3-addressfiable. 
llvm-svn: 93182
 2010-01-11 20:18:04 +00:00
Mon P Wang
e8470bbcc4 Disable transformation of select of two loads to a select of address and then a load if the 
loads are not in the default address space because the transformation discards src value info.

llvm-svn: 93180
 2010-01-11 20:12:49 +00:00
Benjamin Kramer
45e333ea95 Add StrInStrNoCase, a StringRef version of CStrInCStrNoCase. 
llvm-svn: 93174
 2010-01-11 19:45:18 +00:00
Devang Patel
245046024d Add top level section for named metadata. 
llvm-svn: 93172
 2010-01-11 19:35:55 +00:00
Jeffrey Yasskin
42686afc01 Improve unclear bits and inaccuracies in structure and insertvalue 
documentation.

Patch by Dustin Laurence!

llvm-svn: 93170
 2010-01-11 19:19:26 +00:00
Jeffrey Yasskin
7ce78561e3 Update the -tailcallopt description to match djg's improvements to the calling 
convention. 

llvm-svn: 93167
 2010-01-11 18:53:47 +00:00
Devang Patel
9874d72976 s/NextValueNo/NextMDValueNo while processing metadata. 
llvm-svn: 93165
 2010-01-11 18:52:33 +00:00
Benjamin Kramer
7ec2a31f14 Turns out llvm-gcc still uses SplitString with a vector. Add it back until I 
have a fix.

llvm-svn: 93163
 2010-01-11 18:44:35 +00:00
Benjamin Kramer
cdbc36f961 Reimplement getToken and SplitString as "StringRef helper functions" 
- getToken is modeled after StringRef::split but it can split on multiple
  separator chars and skips leading seperators.
- SplitString is a StringRef::split variant for more than 2 elements with the
  same behaviour as getToken.

llvm-svn: 93161
 2010-01-11 18:03:24 +00:00
Dan Gohman
541c4f4c5d Use a 32-bit and with implicit zero-extension instead of a 64-bit and if it 
has an immediate with at least 32 bits of leading zeros, to avoid needing to
materialize that immediate in a register first.

FileCheckize, tidy, and extend a testcase to cover this case.

This fixes rdar://7527390.

llvm-svn: 93160
 2010-01-11 17:58:34 +00:00
Dan Gohman
5b79391087 Re-instate MOV64r0 and MOV16r0, with adjustments to work with the 
new AsmPrinter. This is perhaps less elegant than describing them
in terms of MOV32r0 and subreg operations, but it allows the
current register to rematerialize them.

llvm-svn: 93158
 2010-01-11 17:37:57 +00:00
Dan Gohman
5f2685d424 Generalize this check to avoid depending on a specific register assignment. 
llvm-svn: 93157
 2010-01-11 17:24:27 +00:00
Dan Gohman
d2df677a8f Make this test less trivial, to avoid spurious failures. 
llvm-svn: 93156
 2010-01-11 17:23:56 +00:00
Dan Gohman
a83443605d Pattern top-level operators don't need to be restricted to a 
single user. The _su forms are intended for non-top-level nodes.

llvm-svn: 93155
 2010-01-11 17:21:05 +00:00
Dan Gohman
5042879ae5 Reword this comment to reference a more fundamental issue. 
llvm-svn: 93154
 2010-01-11 17:14:46 +00:00
Evan Cheng
ee806a0db5 Select an OR with immediate as an ADD if the input bits are known zero. This allow the instruction to be 3address-fied if needed. 
llvm-svn: 93152
 2010-01-11 17:03:47 +00:00
David Greene
b879ff4855 Implement a feature (-vector-unaligned-mem) to allow targets to 
ignore alignment requirements for SIMD memory operands.  This
is useful on architectures like the AMD 10h that do not trap on
unaligned references if a status bit is twiddled at startup time.

llvm-svn: 93151
 2010-01-11 16:29:42 +00:00
Victor Hernandez
832bd4fd2d Respond to Chris' review: 
Make InsertDbgValueIntrinsic() and get Offset take and recieve a uint64_t.
Get constness correct for getVariable() and getValue().

llvm-svn: 93149
 2010-01-11 07:45:19 +00:00