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Author SHA1 Message Date
Dan Gohman
50283ce80b Fix a post-RA scheduling dependency bug. 
If a MachineInstr doesn't have a memoperand but has an opcode that
is known to load or store, assume its memory reference may alias
*anything*, including stack slots which the compiler completely
controls.

To partially compensate for this, teach the ScheduleDAG building
code to do basic getUnderlyingValue analysis. This greatly
reduces the number of instructions that require restrictive
dependencies. This code will need to be revisited when we start
doing real alias analysis, but it should suffice for now.

llvm-svn: 63370
 2009-01-30 02:49:14 +00:00
Bill Wendling
ff10c16660 Propagate debug loc info for MUL. 
llvm-svn: 63369
 2009-01-30 02:45:56 +00:00
Bill Wendling
a7791b0e4e Propagate debug loc info in SUB. 
llvm-svn: 63368
 2009-01-30 02:42:10 +00:00
Bill Wendling
665afce822 Propagate debug loc info in ADDC and ADDE. 
llvm-svn: 63367
 2009-01-30 02:38:00 +00:00
Bill Wendling
1ad9d3d9d1 Propagate debug loc info in DAG combine's "ADD". 
llvm-svn: 63366
 2009-01-30 02:31:17 +00:00
Bill Wendling
030f0fced8 - Propagate debug loc info in combineSelectAndUse(). 
- Modify ReassociateOps so that the resulting SDValue is what the comment claims
  it is.

llvm-svn: 63365
 2009-01-30 02:23:43 +00:00
Mikhail Glushenkov
f9201d933e Add some comments. 
llvm-svn: 63364
 2009-01-30 02:12:57 +00:00
Chris Lattner
526d29d06a Fix a bug in getMaxValue/getMinValue to pass the right signedness the 
the constructed APSInt, patch suggested by Ben Laurie!

llvm-svn: 63362
 2009-01-30 01:58:19 +00:00
Devang Patel
ca20526bb9 Enable target tripple. 
llvm-svn: 63361
 2009-01-30 01:40:58 +00:00
Devang Patel
ad24df0a36 Linux and other target's encoding for DW_AT_declaration may not match. 
llvm-svn: 63360
 2009-01-30 01:37:30 +00:00
Dale Johannesen
4855b2e85d Propagate debug info when building SelectionDAG. 
llvm-svn: 63359
 2009-01-30 01:34:22 +00:00
Devang Patel
270009c8ab Remove dead code, again. 
llvm-svn: 63358
 2009-01-30 01:27:49 +00:00
Devang Patel
180d237792 Remove dead code. 
llvm-svn: 63357
 2009-01-30 01:25:47 +00:00
Devang Patel
779653b60e Add DW_AT_declaration for class methods. 
llvm-svn: 63356
 2009-01-30 01:21:46 +00:00
Bill Wendling
31986c393f Propagate debug location info for the token factor. 
llvm-svn: 63355
 2009-01-30 01:13:16 +00:00
Devang Patel
65885d7f73 Add dump() routines to help debug debug info :) 
llvm-svn: 63353
 2009-01-30 01:03:10 +00:00
Bill Wendling
8165903969 Add DebugLoc propagation to some of the methods in DAG combiner. 
llvm-svn: 63350
 2009-01-30 00:45:56 +00:00
Bill Wendling
da5e35aa5f Explain why this is here. 
llvm-svn: 63342
 2009-01-29 23:19:43 +00:00
Owen Anderson
fe46e52119 XFAIL this test. It only worked before because of a bug in the spill point selection code. Not deleting because 
it should be possible to enhance the selection code to handle this in the future.

llvm-svn: 63340
 2009-01-29 22:27:56 +00:00
Owen Anderson
658fb62263 Correct the algorithms for choosing spill and restore points so that we don't try to insert loads/stores between call frame setup and the actual call. 
This fixes the last known failure for the pre-alloc-splitter.

llvm-svn: 63339
 2009-01-29 22:13:06 +00:00
Dan Gohman
ad5e59783b Explicitly add PseudoSourceValue information when lowering 
BUILD_VECTOR and conversions to stack operations.

llvm-svn: 63333
 2009-01-29 21:02:43 +00:00
Dan Gohman
cfbb66cf90 Make a few things const, fix some comments, and simplify 
some assertions.

llvm-svn: 63328
 2009-01-29 19:49:27 +00:00
Chris Lattner
0478798632 Fix windows build, patch by Marius Wachtler! 
llvm-svn: 63325
 2009-01-29 18:53:28 +00:00
Evan Cheng
1ffb8d20e8 Local register allocator shouldn't assume only the entry and landing pad basic blocks have live-ins. 
llvm-svn: 63323
 2009-01-29 18:37:30 +00:00
Dan Gohman
d04298a684 Fix two typos that Duncan spotted in a comment. 
llvm-svn: 63312
 2009-01-29 16:18:12 +00:00
Dan Gohman
14959cba72 In the case of an extractelement on an insertelement value, 
the element indices may be equal if either one is not a
constant.

llvm-svn: 63311
 2009-01-29 16:10:46 +00:00
Evan Cheng
83345de1d3 Add a always_inline test case. 
llvm-svn: 63304
 2009-01-29 09:31:54 +00:00
Bill Wendling
fc00dc63dc Revert r63273. This was already implemented by Dale. There's no need for my 
change.

llvm-svn: 63301
 2009-01-29 09:01:55 +00:00
Evan Cheng
bc1701fd87 Add a test case for Chris lvalue alignment fixes. 
llvm-svn: 63300
 2009-01-29 08:59:46 +00:00
Owen Anderson
4dfa70d703 Fix an issue where restores could be inserted after a terminator instruction, 
and an iterator invalidation issue.

FreeBench/pifft no longer miscompiles with these fixes!

llvm-svn: 63293
 2009-01-29 08:22:06 +00:00
Owen Anderson
ad49be6552 Comments are good. :-) 
llvm-svn: 63276
 2009-01-29 05:41:02 +00:00
Owen Anderson
607c1ea284 Add support for aggressive load-use-store folding. This takes care of the 
vast majority of code size regressions introduced by pre-alloc-splitting.

llvm-svn: 63274
 2009-01-29 05:28:55 +00:00
Bill Wendling
c65110ba7e - Add DebugLoc to getTargetNode(). 
- Modify TableGen to add the DebugLoc when calling getTargetNode.

(The light-weight wrappers are only temporary. The non-DebugLoc version will be
removed once the whole debug info stuff is finished with.)

llvm-svn: 63273
 2009-01-29 05:27:31 +00:00
Chris Lattner
d5591247d1 Fix PR3424, a static constructor ordering issue. Patch by Robert Schuster! 
llvm-svn: 63269
 2009-01-29 04:43:42 +00:00
Evan Cheng
1346d22223 Exit with nice warnings when register allocator run out of registers. 
llvm-svn: 63267
 2009-01-29 02:20:59 +00:00
Dan Gohman
9d120d6d8f Make x86's BT instruction matching more thorough, and add some 
dagcombines that help it match in several more cases. Add
several more cases to test/CodeGen/X86/bt.ll. This doesn't
yet include matching for BT with an immediate operand, it
just covers more register+register cases.

llvm-svn: 63266
 2009-01-29 01:59:02 +00:00
Dan Gohman
21a780e19c Move the code that starts printing the Select_* functions 
after the code that sorts the patterns. This doesn't
affect the output, but it makes the code a little easier
to follow.

llvm-svn: 63265
 2009-01-29 01:37:18 +00:00
Evan Cheng
71bbbe44d8 A slight compile time optimization. If the caller knows there isn't a free register getReg() should not call getFreeReg(). 
llvm-svn: 63263
 2009-01-29 01:13:00 +00:00
Dale Johannesen
9d1e40ac34 Add DebugLoc-sensitive versions of many node creation 
functions.  Currently omitted:  memcpy, memmove, memset.

llvm-svn: 63259
 2009-01-29 00:47:48 +00:00
Evan Cheng
da5915379c Fix comment about removeRange. 
llvm-svn: 63255
 2009-01-29 00:06:09 +00:00
Mon P Wang
8abb07a527 Fixed lowering of v816 shuffles. 
llvm-svn: 63252
 2009-01-28 23:11:14 +00:00
Bill Wendling
ab2b1d7629 Make test platform agnostic. 
llvm-svn: 63247
 2009-01-28 22:20:56 +00:00
Bill Wendling
03582504e0 Add DebugLoc to the getNode() methods. 
llvm-svn: 63245
 2009-01-28 22:17:52 +00:00
Dan Gohman
86c17b5644 Give this test an explicit target, to make it host-independent. 
llvm-svn: 63244
 2009-01-28 22:14:58 +00:00
Dan Gohman
d1106c6f41 SDOperand has been renamed to SDValue. SDNode::Val is now 
accessed via SDNode::getNode.

llvm-svn: 63240
 2009-01-28 21:36:46 +00:00
Dan Gohman
9ebb5025a9 Add more comments describing SDNode operator codes. 
llvm-svn: 63239
 2009-01-28 21:34:36 +00:00
Dale Johannesen
48b6d8aea9 Add DebugLoc-aware constructors for SDNode derived 
classes (those that reasonably have a DebugLoc
associated with them).

llvm-svn: 63236
 2009-01-28 21:18:29 +00:00
Dan Gohman
37ee92ab04 Add some comments on ISD::NodeType. 
llvm-svn: 63234
 2009-01-28 21:13:08 +00:00
Devang Patel
be2267211f Do not forget to derived type while constructing an array type. 
llvm-svn: 63233
 2009-01-28 21:08:20 +00:00
Chris Lattner
f9dd07a3c3 Fix some issues with volatility, move "CanConvertToScalar" check 
after the others.

llvm-svn: 63227
 2009-01-28 20:16:43 +00:00