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22646 Commits

Author SHA1 Message Date
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
Evan Cheng 907be3e24c Remove a completed entry; add a new entry about fisttp op 
llvm-svn: 26105
 2006-02-10 05:48:15 +00:00
Chris Lattner 6e263155a6 add some notes, move some code around. Implement unswitching of loops 
with branches on partially invariant computations.

llvm-svn: 26104
 2006-02-10 02:30:37 +00:00
Chris Lattner 4935417a84 Move code around to be more logical, no functionality change. 
llvm-svn: 26103
 2006-02-10 02:01:22 +00:00
Chris Lattner 3fc3148b85 When unswitching a trivial loop, do admit we are doing it! :) 
llvm-svn: 26102
 2006-02-10 01:36:35 +00:00
Chris Lattner ed7a67b0de Implement unconditional unswitching of 'trivial' loops, those loops that contain 
branches in their entry block that control whether or not the loop is a noop or not.

llvm-svn: 26101
 2006-02-10 01:24:09 +00:00
Chris Lattner 4f0e66df6a Simplify control flow a bit, note that unswitch preserves canonical loop form 
llvm-svn: 26098
 2006-02-09 22:15:42 +00:00
Evan Cheng 101e4b916a Match tblgen change. 
llvm-svn: 26096
 2006-02-09 22:12:53 +00:00
Evan Cheng 5940bc210e Call InsertISelMapEntry rather than map insertion operator to prevent overly 
aggrssive inlining. This reduces Select_store frame size from 24k to 10k.

llvm-svn: 26095
 2006-02-09 22:12:27 +00:00
Evan Cheng a1ef3ec5b5 Added SelectionDAG::InsertISelMapEntry(). This is used to workaround the gcc 
problem where it inline the map insertion call too aggressively. Before this
change it was producing a frame size of 24k for Select_store(), now it's down
to 10k (by calling this method rather than calling the map insertion operator).

llvm-svn: 26094
 2006-02-09 22:11:03 +00:00
Chris Lattner 8976219850 Make the threshold a parameter 
llvm-svn: 26093
 2006-02-09 20:15:48 +00:00
Chris Lattner 4c0bd5bcdf Done 
llvm-svn: 26091
 2006-02-09 20:00:19 +00:00
Chris Lattner 5259aa1c86 Enable LSR by default for SPARC: it is a clear win. 
llvm-svn: 26090
 2006-02-09 19:59:55 +00:00
Chris Lattner 2826e0511b Simplify the loop-unswitch pass, by not even trying to unswitch loops with 
uses of loop values outside the loop.  We need loop-closed SSA form to do
this right, or to use SSA rewriting if we really care.

llvm-svn: 26089
 2006-02-09 19:14:52 +00:00
Chris Lattner 24cd2fa269 Fix 80-column violations 
llvm-svn: 26088
 2006-02-09 07:41:14 +00:00
Chris Lattner 4534dd59a3 Enhance MVIZ in three ways: 
1. Teach it new tricks: in particular how to propagate through signed shr and sexts.
2. Teach it to return a bitset of known-1 and known-0 bits, instead of just zero.
3. Teach instcombine (AND X, C) to fold when we know all C bits of X.

This implements Regression/Transforms/InstCombine/bittest.ll, and allows
future things to be simplified.

llvm-svn: 26087
 2006-02-09 07:38:58 +00:00
Chris Lattner 11f380962b new testcase 
llvm-svn: 26086
 2006-02-09 07:38:30 +00:00
Evan Cheng d1b82d8db0 Match getTargetNode() changes (now return SDNode* instead of SDOperand). 
llvm-svn: 26085
 2006-02-09 07:17:49 +00:00
Evan Cheng 9ce762d51f Match getTargetNode() changes (now returns SDNode* instead of SDOperand). 
llvm-svn: 26084
 2006-02-09 07:16:09 +00:00
Evan Cheng d3f1db93c1 More changes to reduce frame size. 
Move all getTargetNode() out of SelectionDAG.h into SelectionDAG.cpp. This
prevents them from being inlined.
Change getTargetNode() so they return SDNode * instead of SDOperand to prevent
copying. It should also help compilation speed.

llvm-svn: 26083
 2006-02-09 07:15:23 +00:00
Chris Lattner e19b89f59c this apparently passes on linux 
llvm-svn: 26082
 2006-02-09 07:12:13 +00:00
Chris Lattner c75d5b093d add an option to turn on LSR. 
llvm-svn: 26080
 2006-02-09 05:06:36 +00:00
Chris Lattner 729ffe95c4 simplify this code now that each constant pool entry is not separately allocated 
llvm-svn: 26079
 2006-02-09 04:49:59 +00:00
Chris Lattner f6190821da Adjust to MachineConstantPool interface change: instead of keeping a 
value/alignment pair for each constant, keep a value/offset pair.

llvm-svn: 26078
 2006-02-09 04:46:04 +00:00
Chris Lattner 8bb44151e1 instead of keeping track of Constant/alignment pairs, actually compute the 
offset of each entry from the start of the constant pool.

llvm-svn: 26077
 2006-02-09 04:44:32 +00:00
Chris Lattner ba97264e72 rename fields of constant pool entries 
llvm-svn: 26076
 2006-02-09 04:22:52 +00:00
Chris Lattner 1cd22199dd Use a MachineConstantPoolEntry struct instead of a pair to hold 
constant pool entries.

llvm-svn: 26075
 2006-02-09 04:21:49 +00:00
Chris Lattner 47f7319f00 Simplify code, alignment must be specified now. 
llvm-svn: 26074
 2006-02-09 02:26:04 +00:00
Chris Lattner 0ece4214ad Assert invariants 
llvm-svn: 26073
 2006-02-09 02:25:42 +00:00
Chris Lattner c360656c1d Require an alignment. 
llvm-svn: 26072
 2006-02-09 02:24:25 +00:00
Chris Lattner 4576bb74d5 Make MachineConstantPool entries alignments explicit 
llvm-svn: 26071
 2006-02-09 02:23:13 +00:00
Chris Lattner 832d78d981 Always pass in an alignment. 
llvm-svn: 26070
 2006-02-09 02:19:16 +00:00
Chris Lattner d94a3d2c8a provide an explicit alignment for cp entries 
llvm-svn: 26069
 2006-02-09 02:15:30 +00:00
Chris Lattner ea25aba382 Add a comment: value is log2 
llvm-svn: 26068
 2006-02-09 02:10:15 +00:00
Evan Cheng 6dc90ca172 Change Select() from 
SDOperand Select(SDOperand N);
to
void Select(SDOperand &Result, SDOperand N);

llvm-svn: 26067
 2006-02-09 00:37:58 +00:00
Chris Lattner 2e07d6370a Darwin doesn't support #APP/#NO_APP 
llvm-svn: 26066
 2006-02-08 23:42:22 +00:00
Chris Lattner ed87dcd45f Add support for assembler directives that wrap inline asm 
llvm-svn: 26065
 2006-02-08 23:41:56 +00:00
Chris Lattner 26e385a623 Rename BSel -> PPCBSel for the benefit of doxygen users. 
Move the methods out of line.
Remove unused Debug.h stuff.
Teach getNumBytesForInstruction to know the size of an inline asm.

llvm-svn: 26064
 2006-02-08 19:33:26 +00:00
Jim Laskey 15f9188d73 Disable this test for the time being as debug is brought up to speed. 
llvm-svn: 26063
 2006-02-08 18:17:06 +00:00
Chris Lattner b4fc050f0f add a simple optimization 
llvm-svn: 26062
 2006-02-08 17:47:22 +00:00
Chris Lattner 6f5a00fd68 Mention that delta can be used to reduce some Front-end problems. 
Patch by Marco Matthies, thanks!

llvm-svn: 26061
 2006-02-08 17:01:37 +00:00
Chris Lattner 4999a5c0c7 Add SRoA to the lexicon. Patch by Marco Matthies! 
llvm-svn: 26060
 2006-02-08 16:59:49 +00:00
Evan Cheng df5ef770b6 Added options -cflag, -cxxflags, and -ldflags to override the default C 
compilation, C++ compilation, and linker options.
e.g. This is the options I use for testing on my x86 iMac:
nice ./NightlyTest.pl -release -cflags "-Os -DNDEBUG -fomit-frame-pointer" -cxxflags "-Os -DNDEBUG -finline-functions -felide-constructors -fomit-frame-pointer"

llvm-svn: 26057
 2006-02-08 09:08:06 +00:00
Chris Lattner ab2dc4d70d Simplify some code, reducing calls to MaskedValueIsZero. Implement a minor 
optimization where we reduce the number of bits in AND masks when possible.

llvm-svn: 26056
 2006-02-08 07:34:50 +00:00