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3d518334b9
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951 Commits

Author SHA1 Message Date
Nate Begeman
3d518334b9 SelectionDAGISel can now natively handle Switch instructions, in the same 
manner that the LowerSwitch LLVM to LLVM pass does: emitting a binary
search tree of basic blocks.  The new approach has several advantages:
it is faster, it generates significantly smaller code in many cases, and
it paves the way for implementing dense switch tables as a jump table by
handling switches directly in the instruction selector.

This functionality is currently only enabled on x86, but should be safe for
every target.  In anticipation of making it the default, the cfg is now
properly updated in the x86, ppc, and sparc select lowering code.

llvm-svn: 27156
 2006-03-27 01:32:24 +00:00
Jim Laskey
fb55c2c6a7 Bullet proof against undefined args produced by upgrading ols-style debug info. 
llvm-svn: 27155
 2006-03-26 22:46:27 +00:00
Evan Cheng
ef3b33b847 Add ISD::isBuildVectorAllZeros predicate 
llvm-svn: 27147
 2006-03-26 09:50:58 +00:00
Chris Lattner
aef813a8cf Allow targets to custom lower their own intrinsics if desired. 
llvm-svn: 27146
 2006-03-26 09:12:51 +00:00
Chris Lattner
f9c8e9646d Fix a bug in ISD::isBuildVectorAllOnesInteger that caused it to always return 
false

llvm-svn: 27131
 2006-03-25 22:59:28 +00:00
Chris Lattner
d89668e503 Implement the ISD::isBuildVectorAllOnesInteger predicate 
llvm-svn: 27130
 2006-03-25 22:57:01 +00:00
Chris Lattner
62185c0496 Don't call SimplifyDemandedBits on vectors 
llvm-svn: 27128
 2006-03-25 22:19:00 +00:00
Chris Lattner
1e4694ed84 fix inverted conditional 
llvm-svn: 27089
 2006-03-24 22:49:42 +00:00
Evan Cheng
ff1db97bca Only to vector shuffle for {x,x,y,y} cases when SCALAR_TO_VECTOR is free. 
llvm-svn: 27071
 2006-03-24 18:45:20 +00:00
Jim Laskey
0d63725a26 Rename for truth in advertising. 
llvm-svn: 27063
 2006-03-24 09:50:27 +00:00
Chris Lattner
62b04677c0 prefer to generate constant pool loads over splats. This prevents us from 
using a splat for {1.0,1.0,1.0,1.0}

llvm-svn: 27055
 2006-03-24 07:29:17 +00:00
Chris Lattner
b2b32e9283 fix spello 
llvm-svn: 27053
 2006-03-24 07:15:07 +00:00
Chris Lattner
f7ceb5fdd4 legalize vbit_convert nodes whose result is a legal type. 
Legalize intrinsic nodes.

llvm-svn: 27036
 2006-03-24 02:26:29 +00:00
Chris Lattner
041588d953 Lower target intrinsics into an INTRINSIC node 
llvm-svn: 27035
 2006-03-24 02:22:33 +00:00
Chris Lattner
3c7f31ad32 fix some bogus assertions: noop bitconverts are legal 
llvm-svn: 27032
 2006-03-24 02:20:47 +00:00
Evan Cheng
a54a9fbe05 Lower BUILD_VECTOR to VECTOR_SHUFFLE if there are two distinct nodes (and if 
the target can handle it). Issue two SCALAR_TO_VECTOR ops followed by a
VECTOR_SHUFFLE to select from the two vectors.

llvm-svn: 27023
 2006-03-24 01:17:21 +00:00
Chris Lattner
c5c9034e7f Identify the INTRINSIC node 
llvm-svn: 27020
 2006-03-24 01:04:30 +00:00
Chris Lattner
175ac8ea20 add support for splitting casts. This implements 
CodeGen/Generic/vector.ll:test_cast_2.

llvm-svn: 26999
 2006-03-23 21:16:34 +00:00
Jim Laskey
b0ebfecdbf Handle new forms of llvm.dbg intrinsics. 
llvm-svn: 26988
 2006-03-23 18:06:46 +00:00
Chris Lattner
7db942251a simplify some code 
llvm-svn: 26972
 2006-03-23 05:29:04 +00:00
Chris Lattner
2ef03f3a43 Fix a typo 
llvm-svn: 26965
 2006-03-22 22:20:49 +00:00
Chris Lattner
7eaf8fa583 Implement simple support for vector casting. This can currently only handle 
casts between legal vector types.

llvm-svn: 26961
 2006-03-22 20:09:35 +00:00
Chris Lattner
c8696247e5 Endianness does not affect the order of vector fields. This fixes 
SingleSource/UnitTests/Vector/build.c

llvm-svn: 26936
 2006-03-22 01:46:54 +00:00
Chris Lattner
51b4436cce Enclose some variables in a scope to avoid error with some gcc versions 
llvm-svn: 26934
 2006-03-22 00:12:37 +00:00
Chris Lattner
12e4b95b6b add expand support for extractelement 
llvm-svn: 26931
 2006-03-21 21:02:03 +00:00
Chris Lattner
b90d9241c1 add some trivial support for extractelement. 
llvm-svn: 26928
 2006-03-21 20:44:12 +00:00
Chris Lattner
128089ae91 Add a hacky workaround for crashes due to vectors live across blocks. 
Note that this code won't work for vectors that aren't legal on the
target.  Improvements coming.

llvm-svn: 26925
 2006-03-21 19:20:37 +00:00
Chris Lattner
9fd8618130 If a target supports splatting with SHUFFLE_VECTOR, lower to it from BUILD_VECTOR(x,x,x,x) 
llvm-svn: 26885
 2006-03-20 01:52:29 +00:00
Chris Lattner
9fc969612c TargetData doesn't know the alignment of vectors :( 
llvm-svn: 26884
 2006-03-20 01:51:46 +00:00
Chris Lattner
529a9121d4 Add very basic support for VECTOR_SHUFFLE 
llvm-svn: 26880
 2006-03-19 23:56:04 +00:00
Chris Lattner
2144db7a6c Allow SCALAR_TO_VECTOR to be custom lowered. 
llvm-svn: 26867
 2006-03-19 06:47:21 +00:00
Chris Lattner
6bb71c2ebd Add SCALAR_TO_VECTOR support 
llvm-svn: 26866
 2006-03-19 06:31:19 +00:00
Chris Lattner
6c7486ff4d Don't bother storing undef elements of BUILD_VECTOR's 
llvm-svn: 26858
 2006-03-19 05:46:04 +00:00
Chris Lattner
52a132ab18 Implement expand of BUILD_VECTOR containing variable elements. 
This implements CodeGen/Generic/vector.ll:test_variable_buildvector

llvm-svn: 26852
 2006-03-19 04:18:56 +00:00
Chris Lattner
c9c081fc40 fold insertelement(buildvector) -> buildvector if the inserted element # is 
a constant.  This implements test_constant_insert in CodeGen/Generic/vector.ll

llvm-svn: 26851
 2006-03-19 01:27:56 +00:00
Chris Lattner
bf4033f63a implement basic support for INSERT_VECTOR_ELT. 
llvm-svn: 26849
 2006-03-19 01:17:20 +00:00
Chris Lattner
db243940bd Rename ConstantVec -> BUILD_VECTOR and VConstant -> VBUILD_VECTOR. Allow*BUILD_VECTOR to take variable inputs. 
llvm-svn: 26847
 2006-03-19 00:52:58 +00:00
Chris Lattner
855e3c878b implement vector.ll:test_undef 
llvm-svn: 26845
 2006-03-19 00:20:20 +00:00
Chris Lattner
367f9aef95 Fix the remaining bugs in the vector expansion rework I commited yesterday. 
This fixes CodeGen/Generic/vector.ll

llvm-svn: 26843
 2006-03-19 00:07:49 +00:00
Chris Lattner
35b6933508 Change the structure of lowering vector stuff. Note: This breaks some 
things.

llvm-svn: 26840
 2006-03-18 01:44:44 +00:00
Chris Lattner
3358842eb5 add a couple enum values 
llvm-svn: 26830
 2006-03-17 19:53:59 +00:00
Nate Begeman
42736d46b2 Remove BRTWOWAY* 
Make the PPC backend not dependent on BRTWOWAY_CC and make the branch
selector smarter about the code it generates, fixing a case in the
readme.

llvm-svn: 26814
 2006-03-17 01:40:33 +00:00
Chris Lattner
7e80a5a16b Fix a problem fully scalarizing values. 
llvm-svn: 26811
 2006-03-16 23:05:19 +00:00
Chris Lattner
413bb13b27 Add support for CopyFromReg from vector values. Note: this doesn't support 
illegal vector types yet!

llvm-svn: 26799
 2006-03-16 19:57:50 +00:00
Chris Lattner
34f2e70f60 Teach CreateRegForValue how to handle vector types. 
llvm-svn: 26798
 2006-03-16 19:51:18 +00:00
Chris Lattner
95577cb3cd add support for vector->vector casts 
llvm-svn: 26788
 2006-03-15 22:19:46 +00:00
Chris Lattner
7c8518a21d Add a note, this code should be moved to the dag combiner. 
llvm-svn: 26787
 2006-03-15 22:19:18 +00:00
Chris Lattner
3b4ceba4ff make sure dead token factor nodes are removed by the dag combiner. 
llvm-svn: 26731
 2006-03-13 18:37:30 +00:00
Jim Laskey
c741139c24 Handle the removal of the debug chain. 
llvm-svn: 26729
 2006-03-13 13:07:37 +00:00
Chris Lattner
3a3c8682b5 Fold X+Y -> X|Y when safe. This implements: 
Regression/CodeGen/PowerPC/and_add.ll

a case that occurs with dynamic allocas of constant size.

llvm-svn: 26727
 2006-03-13 06:51:27 +00:00