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22689 Commits

Author SHA1 Message Date
Chris Lattner 0b8ec1a132 Use statistics to keep track of what flavors of loops we are unswitching 
llvm-svn: 26157
 2006-02-14 01:01:41 +00:00
Chris Lattner 8e2ee7358f Fix a latent bug in the call sequence handling stuff. Some targets (e.g. x86) 
create these nodes with flag results.  Remember that we legalized them.

llvm-svn: 26156
 2006-02-14 00:55:02 +00:00
Chris Lattner 8b10ab3002 Implement Instcombine/and.ll:test34 
llvm-svn: 26155
 2006-02-13 23:07:23 +00:00
Chris Lattner 8081f40b50 new testcase 
llvm-svn: 26154
 2006-02-13 23:07:02 +00:00
Chris Lattner 4108d260e8 Fix typo that caused build failures for things trying to use m_Or. 
llvm-svn: 26153
 2006-02-13 23:06:39 +00:00
Chris Lattner 7d8522884b If any of the sign extended bits are demanded, the input sign bit is demanded 
for a sign extension.

This fixes InstCombine/2006-02-13-DemandedMiscompile.ll and Ptrdist/bc.

llvm-svn: 26152
 2006-02-13 22:41:07 +00:00
Chris Lattner 5898effde0 testcase reduced from Ptrdist/bc that is miscompiled by recent instcombine changes. 
llvm-svn: 26151
 2006-02-13 22:31:50 +00:00
Chris Lattner d2d174dd0e Another hack due to allowing multiple symbols with the same name. 
llvm-svn: 26150
 2006-02-13 22:22:42 +00:00
Chris Lattner eea0f0198e Another work around for the 'symbols with different types can have the same 
name' issue.

llvm-svn: 26149
 2006-02-13 21:43:26 +00:00
Andrew Lenharth a438ef0ee7 improved zap discovery 
llvm-svn: 26148
 2006-02-13 18:52:29 +00:00
Andrew Lenharth a3bc7b8a85 test for improved zap discovery 
llvm-svn: 26147
 2006-02-13 18:52:01 +00:00
Jim Laskey 29483560d0 Sync up the tag numbers with gcc4. 
llvm-svn: 26146
 2006-02-13 16:56:43 +00:00
Jim Laskey 390c63e9d9 Rename to better reflect usage (current and planned.) 
llvm-svn: 26145
 2006-02-13 12:50:39 +00:00
Chris Lattner 462505fc5f Completely rewrite libcall insertion by the legalizer, providing the 
following handy-dandy properties:

1. it is always correct now
2. it is much faster than before
3. it is easier to understand

This implementation builds off of the recent simplifications of the
legalizer that made it single-pass instead of iterative.

This fixes JM/lencod, JM/ldecod, and
CodeGen/Generic/2006-02-12-InsertLibcall.ll (at least on PPC).

llvm-svn: 26144
 2006-02-13 09:18:02 +00:00
Chris Lattner 62c3484e43 Switch targets over to using SelectionDAG::getCALLSEQ_START to create 
CALLSEQ_START nodes.

llvm-svn: 26143
 2006-02-13 09:00:43 +00:00
Chris Lattner 3a0ad47b39 Switch to using getCALLSEQ_START instead of using our own creation calls 
llvm-svn: 26142
 2006-02-13 08:55:29 +00:00
Chris Lattner 5a30d8367a Add a method 
llvm-svn: 26141
 2006-02-13 08:54:46 +00:00
Chris Lattner d062f09026 this passes now, due to Nate's recent efforts 
llvm-svn: 26140
 2006-02-13 07:26:36 +00:00
Chris Lattner 4c388281c1 Reduce this testcase a bit more, with the help of llvm-extract and some hand tweaks 
llvm-svn: 26139
 2006-02-13 07:02:50 +00:00
Chris Lattner 68e7475777 Be careful not to request or look at bits shifted in from outside the size 
of the input.  This fixes the mediabench/gsm/toast failure last night.

llvm-svn: 26138
 2006-02-13 06:09:08 +00:00
Evan Cheng 0684e9ae6d Added a test case for a libcall insertion bug. 
llvm-svn: 26137
 2006-02-12 10:24:00 +00:00
Nate Begeman bc3ec1d37b Add missing patterns for andi. and andis., fixing test/Regression/CodeGen/ 
PowerPC/and-imm.ll

llvm-svn: 26136
 2006-02-12 09:09:52 +00:00
Chris Lattner f5b4ef7f58 remove some more dead special case code 
llvm-svn: 26135
 2006-02-12 08:07:37 +00:00
Chris Lattner 5b2edb1fca Eliminate special case hacks that are superceded by general purpose hacks 
llvm-svn: 26134
 2006-02-12 08:02:11 +00:00
Chris Lattner e6ebe1af61 tweaks 
llvm-svn: 26133
 2006-02-12 08:01:35 +00:00
Chris Lattner ee0f280743 Three changes: 
1. Teach GetConstantInType to handle boolean constants.
2. Teach instcombine to fold (compare X, CST) when X has known 0/1 bits.
   Testcase here: set.ll:test22
3. Improve the "(X >> c1) & C2 == 0" folding code to allow a noop cast
   between the shift and and.  More aggressive bitfolding for other reasons
   was turning signed shr's into unsigned shr's, leaving the noop cast in
   the way.

llvm-svn: 26131
 2006-02-12 02:07:56 +00:00
Chris Lattner 2234a136b3 new testcase 
llvm-svn: 26130
 2006-02-12 02:06:31 +00:00
Chris Lattner 5e488c9cc2 move a failing testcase from bit-tracking.ll to narrow.ll, and move the 
xfail marker with it

llvm-svn: 26129
 2006-02-12 02:02:43 +00:00
Chris Lattner 02f53ad3a2 Revert my last patch. It too breaks stuff 
llvm-svn: 26128
 2006-02-12 01:59:10 +00:00
Chris Lattner 8e99b0baca Make these tests fail if opt crashes. 
llvm-svn: 26127
 2006-02-12 01:32:58 +00:00
Chris Lattner 35248e06bc Fix for my previously reverted patch 
llvm-svn: 26126
 2006-02-11 21:24:54 +00:00
Chris Lattner f3ed03481a Update comments to be actually accurate 
llvm-svn: 26124
 2006-02-11 09:37:07 +00:00
Chris Lattner 00601c0c7e This is implemented by the simplify-libcalls pass, not instcombine 
llvm-svn: 26123
 2006-02-11 09:33:28 +00:00
Chris Lattner 0157e7f55b Port the recent innovations in ComputeMaskedBits to SimplifyDemandedBits. 
This allows us to simplify on conditions where bits are not known, but they
are not demanded either!  This also fixes a couple of bugs in
ComputeMaskedBits that were exposed during this work.

In the future, swaths of instcombine should be removed, as this code
subsumes a bunch of ad-hockery.

llvm-svn: 26122
 2006-02-11 09:31:47 +00:00
Chris Lattner b24ce3a2a8 revert my previous change, it exposed other problems. 
llvm-svn: 26121
 2006-02-11 08:47:47 +00:00
Duraid Madina 4698e4f5fe fix storing booleans (grawp missed this one) 
llvm-svn: 26120
 2006-02-11 07:33:17 +00:00
Duraid Madina 0010a92375 now short immediates will get matched (previously constants were all 
triggering movl 64bit imm fat instructions)

llvm-svn: 26119
 2006-02-11 07:32:15 +00:00
Chris Lattner 05bf90dddf Make this check stricter. Disallow loop exit blocks from being shared by 
loops and their subloops.

llvm-svn: 26118
 2006-02-11 02:13:17 +00:00
Evan Cheng a86ba85dc5 Prevent certain nodes that have already been selected from being folded into 
X86 addressing mode. Currently we do not allow any node whose target node
produces a chain as well as any node that is at the root of the addressing
mode expression tree.

llvm-svn: 26117
 2006-02-11 02:05:36 +00:00
Chris Lattner a6ae101afa remove dead expr 
llvm-svn: 26116
 2006-02-11 01:43:37 +00:00
Jim Laskey 5995d0160c Reorg for integration with gcc4. Old style debug info will not be passed though 
to SelIDAG.

llvm-svn: 26115
 2006-02-11 01:01:30 +00:00
Chris Lattner fbadd7e1ee implement unswitching of loops with switch stmts and selects in them 
llvm-svn: 26114
 2006-02-11 00:43:37 +00:00
Chris Lattner f1b151684d Update PHI nodes in successors of exit blocks. 
llvm-svn: 26113
 2006-02-10 23:26:14 +00:00
Chris Lattner fe4151efe7 Reform the unswitching code in terms of edge splitting, not block splitting. 
llvm-svn: 26112
 2006-02-10 23:16:39 +00:00
Evan Cheng 2b6f78b664 Nicer code. :-) 
llvm-svn: 26111
 2006-02-10 22:46:26 +00:00
Evan Cheng d49cc3634e Added X86 isel debugging stuff. 
llvm-svn: 26110
 2006-02-10 22:24:32 +00:00
Chris Lattner 975486db5e Remove a level of indirection. 
llvm-svn: 26109
 2006-02-10 21:32:11 +00:00
Chris Lattner ec6b40a093 Fix a case where UnswitchTrivialCondition broke critical edges with 
phi's in the successors

llvm-svn: 26108
 2006-02-10 19:08:15 +00:00
Chris Lattner fcb8a3aa76 Use the auto-generated call matcher. Remove a broken impl of the frameaddr/returnaddr 
intrinsics.

Autogen frameindex matcher

llvm-svn: 26107
 2006-02-10 07:35:42 +00:00
Chris Lattner 0c4dea4cb2 Update to new-style flags usage, simplifying the .td file 
llvm-svn: 26106
 2006-02-10 06:58:25 +00:00