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Author SHA1 Message Date
Nick Lewycky
ac8e34e574 Fix up comments. 
llvm-svn: 53586
 2008-07-15 03:40:27 +00:00
Bruno Cardoso Lopes
0c154df07f Fixed call stack alignment. Improved AsmPrinter alignment issues. 
llvm-svn: 53585
 2008-07-15 02:03:36 +00:00
Devang Patel
da53eaaea8 LinkOnce definitions have default scope, like weak definitions. Otherwise, the linker may not be able to match LinkOnce definition from one module with an exteranl reference from other module. 
llvm-svn: 53580
 2008-07-15 00:00:11 +00:00
Evan Cheng
91029f36ff Goodbye tail duplication (for good this time). 
llvm-svn: 53574
 2008-07-14 22:29:15 +00:00
Chris Lattner
c82df0d2e7 This replaces all $(SolutionDir) macros with $(ProjectDir)..\ 
Patch by Nicolas Capens!

llvm-svn: 53571
 2008-07-14 18:46:16 +00:00
Dan Gohman
e76fd33ee5 Reapply 53476 and 53480, with a fix so that it properly updates 
the BB member to the current basic block after emitting
instructions.

llvm-svn: 53567
 2008-07-14 18:19:29 +00:00
Dan Gohman
8280b2e66e Fix uninitialized use of the Changed variable. 
llvm-svn: 53564
 2008-07-14 17:55:01 +00:00
Dan Gohman
7b61b66334 Improve debug output for MemOperandSDNode. PseudoSourceValue nodes 
don't have value names, so use print instead of getName() to get a
useful string.

llvm-svn: 53563
 2008-07-14 17:51:24 +00:00
Dan Gohman
bf764c6a4c Fix edito in the PseudoSourceValue name list. 
llvm-svn: 53562
 2008-07-14 17:45:47 +00:00
Dan Gohman
5115e43548 Reformat this message to fit in 80 cols. 
llvm-svn: 53561
 2008-07-14 17:43:27 +00:00
Duncan Sands
ef690bbffe I don't think BUILD_PAIR can have a vector result. 
Remove support for this.

llvm-svn: 53559
 2008-07-14 17:34:19 +00:00
Duncan Sands
bb3251e1f4 Tighten up some checks. Fix FPOWI splitting for 
non-power-of-two vectors.

llvm-svn: 53558
 2008-07-14 17:33:37 +00:00
Chris Lattner
8a9725bffe Reapply r53540, now with the matching header! 
llvm-svn: 53557
 2008-07-14 17:32:59 +00:00
Duncan Sands
134155a263 An INSERT_VECTOR_ELT can insert a larger value 
than the vector element type.  Don't forget to
handle this when the insertion index is not a
constant.

llvm-svn: 53556
 2008-07-14 17:32:02 +00:00
Duncan Sands
5a4bab9849 According to the docs, it is possible to have an 
extending load of a vector.  Handle this case when
splitting vector loads.  I'm not completely sure
what is supposed to happen, but I think it means
hi should be set to undef.  LegalizeDAG does not
consider this case.

llvm-svn: 53555
 2008-07-14 17:27:46 +00:00
Duncan Sands
fd63c72205 There should be no extending loads or truncating 
stores of one-element vectors.  Also, neaten the
handling of INSERT_VECTOR_ELT when the inserted
type is larger than the vector element type.

llvm-svn: 53554
 2008-07-14 17:22:31 +00:00
Duncan Sands
a9d2c2042e Ignore TargetConstant with an illegal type. These 
are used for passing huge immediates in inline ASM
from the front-end straight down to the ASM writer.
Of course this is a hack, but it is simple, limited
in scope, works in practice, and is what LegalizeDAG
does.

llvm-svn: 53553
 2008-07-14 17:15:45 +00:00
Bruno Cardoso Lopes
f5a55301e0 Added Subtarget support into RegisterInfo 
Added HasABICall and HasAbsoluteCall (equivalent to gcc -mabicall and 
-mno-shared). HasAbsoluteCall is not implemented but HasABICall is the 
default for o32 ABI. Now, both should help into a more accurate 
relocation types implementation. 
Added IsLinux is needed to choose between asm directives.
Instruction name strings cleanup.
AsmPrinter improved.

llvm-svn: 53551
 2008-07-14 14:42:54 +00:00
Duncan Sands
63940a7330 Revert r53540 - it does not compile. 
llvm-svn: 53549
 2008-07-14 07:59:28 +00:00
Chris Lattner
ef7178406b Reimplement LinkFunctionProtos in terms of GetLinkageResult. This fixes 
the second half of link-global-to-func.ll and causes some minor changes in
messages.

There are two TODOs here.  First, this causes a regression in 
2008-07-06-AliasWeakDest.ll, which is now failing (so I xfailed it).  Anton,
I would really appreciate it if you could take a look at this.  It should be
a matter of adding proper alias support to GetLinkageResult, and was probably
already a latent bug that would manifest with globals.

The second todo is to reimplement LinkAlias in the same pattern as 
function and global linking.  This should be pretty straight-forward for 
someone who knows aliases, but isn't a requirement for correctness.

llvm-svn: 53548
 2008-07-14 07:23:24 +00:00
Chris Lattner
0b95d5f57d don't do any linkage, not even type resolution, of symbols that have 
internal linkage.

llvm-svn: 53547
 2008-07-14 06:52:19 +00:00
Chris Lattner
d31cacb5d6 implement linking of globals to functions, in one direction 
(replacing a function with a global).  This is needed when building
llvm itself with LTO on darwin, because of the EXPLICIT_SYMBOL hack
in lib/system/DynamicLibrary.cpp.

Implementation of linking the other way will need to wait for a 
cleanup of LinkFunctionProtos.

llvm-svn: 53546
 2008-07-14 06:49:45 +00:00
Chris Lattner
c68c953e71 wrap long lines, remove some code from a non-assert build. 
llvm-svn: 53545
 2008-07-14 05:52:33 +00:00
Chris Lattner
b786d147c9 Fix a bunch of bugs handling vector compare constant expressions, fixing 
PR2317.

llvm-svn: 53544
 2008-07-14 05:17:31 +00:00
Chris Lattner
accde0a86b Document and fix Constant::getVectorElements to return an empty vector 
when presented with a constant expr.

If ConstantExpr::getV[IF]Cmp to work when ConstantFoldCompareInstruction
returns an undef or constant expr.  

llvm-svn: 53541
 2008-07-14 05:10:41 +00:00
Chris Lattner
6841e1dc33 If a function calls setjmp, never inline it into other functions. This is 
a hack around the fact that we don't represent the CFG correctly for sj/lj.
It fixes PR2486.

llvm-svn: 53540
 2008-07-14 00:46:56 +00:00
Chris Lattner
f8e9922213 simplify some code, shuffle and insertelt always return a vector. 
llvm-svn: 53538
 2008-07-14 00:32:20 +00:00
Chris Lattner
58fe3dee5a whitespace fix. 
llvm-svn: 53537
 2008-07-14 00:28:45 +00:00
Chris Lattner
f5c321c7fc doxygenate comments and wrap to 80 cols. 
llvm-svn: 53536
 2008-07-14 00:27:31 +00:00
Chris Lattner
15ae951af5 Add a note. 
llvm-svn: 53535
 2008-07-14 00:19:59 +00:00
Chris Lattner
14faada3a3 Fix PR2506 by being a bit more careful about reverse fact propagation when 
disproving a condition.  This actually compiles the existing testcase
(udiv_select_to_select_shift) to:

define i64 @test(i64 %X, i1 %Cond) {
entry:
	%divisor1.t = lshr i64 %X, 3		; <i64> [#uses=1]
	%quotient2 = lshr i64 %X, 3		; <i64> [#uses=1]
	%sum = add i64 %divisor1.t, %quotient2		; <i64> [#uses=1]
	ret i64 %sum
}

instead of:

define i64 @test(i64 %X, i1 %Cond) {
entry:
	%quotient1.v = select i1 %Cond, i64 3, i64 4		; <i64> [#uses=1]
	%quotient1 = lshr i64 %X, %quotient1.v		; <i64> [#uses=1]
	%quotient2 = lshr i64 %X, 3		; <i64> [#uses=1]
	%sum = add i64 %quotient1, %quotient2		; <i64> [#uses=1]
	ret i64 %sum
}

llvm-svn: 53534
 2008-07-14 00:15:52 +00:00
Chris Lattner
3444f4d4c4 Fix mishandling of the infinite loop case when merging two blocks. This 
fixes PR2540.

llvm-svn: 53533
 2008-07-13 22:23:11 +00:00
Chris Lattner
7cb257551f more refactoring. Use early exits instead of really complex logic. 
No functionality change.

llvm-svn: 53532
 2008-07-13 22:04:41 +00:00
Chris Lattner
a4a80e0092 improve comments. 
llvm-svn: 53531
 2008-07-13 21:55:46 +00:00
Chris Lattner
824fbca1ee factor another large hunk of code out into its own function. 
No functionality change.

llvm-svn: 53530
 2008-07-13 21:53:26 +00:00
Chris Lattner
631ab45eb2 add a description. 
llvm-svn: 53529
 2008-07-13 21:27:36 +00:00
Chris Lattner
67bf4acd15 Final bit of simplification for FoldBranchToCommonDest. 
llvm-svn: 53528
 2008-07-13 21:20:19 +00:00
Chris Lattner
3346d311c7 simplify logic a bit 
llvm-svn: 53527
 2008-07-13 21:15:11 +00:00
Chris Lattner
2ac1854097 Refactor some code out into its own helper function, getting rid of crazy multiline 
conditionals and commenting the code better.

No functionality change.

llvm-svn: 53526
 2008-07-13 21:12:01 +00:00
Duncan Sands
2513505573 Fix comment. 
llvm-svn: 53525
 2008-07-13 20:14:38 +00:00
Chris Lattner
540afcff82 Fix PR2231 - opt -internalize -std-compile-opts should run internalize first 
llvm-svn: 53523
 2008-07-13 19:35:21 +00:00
Cedric Venet
6f9cf0e8a6 Remove deleted files from VC++ project. 
llvm-svn: 53521
 2008-07-13 11:12:36 +00:00
Ted Kremenek
6efe7adf98 Inline typedef for alist_iterator::pointer to work with MSVC++. 
llvm-svn: 53517
 2008-07-12 18:28:46 +00:00
Nick Lewycky
df9e9f0b0e Stop creating extraneous smax/umax in SCEV. This removes a regression where we 
started complicating many loops ('for' loops, in fact).

llvm-svn: 53508
 2008-07-12 07:41:32 +00:00
Nick Lewycky
0dae6f90bb operator[] is not defined for list::iterator. Overload it in ilist::iterator 
to prevent silly things from happening accidentally. PR2171

llvm-svn: 53507
 2008-07-12 07:00:52 +00:00
Nick Lewycky
3fb5816774 Enhance analysis of srem. 
Remove dead code analyzing urem. 'urem' of power-of-2 is canonicalized to an
'and' instruction.

llvm-svn: 53506
 2008-07-12 05:04:38 +00:00
Evan Cheng
c69b53dff9 Implement llvm.atomic.cmp.swap.i32 on PPC. Patch by Gary Benson! 
llvm-svn: 53505
 2008-07-12 02:23:19 +00:00
Evan Cheng
7457283357 Typos. 
llvm-svn: 53504
 2008-07-12 02:22:07 +00:00
Evan Cheng
05e5317cab Fix PR2536: a nasty spiller bug. If a two-address instruction uses a register but the use portion of its live range is not part of its liveinterval, it must be defined by an implicit_def. In that case, do not spill the use. e.g. 
8   %reg1024<def> = IMPLICIT_DEF
12  %reg1024<def> = INSERT_SUBREG %reg1024<kill>, %reg1025, 2

The live range [12, 14) are not part of the r1024 live interval since it's defined by an implicit def. It will not conflicts with live interval of r1025. Now suppose both registers are spilled, you can easily see a situation where both registers are reloaded before the INSERT_SUBREG and both target registers that would overlap.

llvm-svn: 53503
 2008-07-12 01:56:02 +00:00
Evan Cheng
ebf7ff4531 Back out 53476 and 53480 for now. Somehow they cause llc to miscompile 179.art. 
llvm-svn: 53502
 2008-07-12 01:38:51 +00:00