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1189 Commits

Author SHA1 Message Date
Chris Lattner
5730220037 Remove obsolete comment. Unreachable blocks will automatically be left at the 
end of the function.

llvm-svn: 11313
 2004-02-11 05:20:50 +00:00
Chris Lattner
ca52c22356 Add an _embarassingly simple_ implementation of basic block layout. This is 
more of a testcase for profiling information than anything that should reasonably
be used, but it's a starting point.  When I have more time I will whip this into
better shape.

llvm-svn: 11311
 2004-02-11 04:53:20 +00:00
Chris Lattner
4418633216 Implement SimplifyCFG/PhiEliminate.ll 
Having a proper 'select' instruction would allow the elimination of a lot
of the special case cruft in this patch, but we don't have one yet.

llvm-svn: 11307
 2004-02-11 03:36:04 +00:00
Chris Lattner
754914b142 The hasConstantReferences predicate always returns false. 
llvm-svn: 11301
 2004-02-11 01:17:07 +00:00
Chris Lattner
d2c679e5f6 initialization calls now return argc. If the program uses the argc value 
passed into main, make sure they use the return value of the init call
instead of the one passed in.

llvm-svn: 11262
 2004-02-10 17:41:01 +00:00
Chris Lattner
e961c1189f Only add the global variable with the abort message if an unwind actually 
occurs in the program.

llvm-svn: 11249
 2004-02-09 22:48:47 +00:00
Chris Lattner
255269e677 Don't depend on auto data conversion 
llvm-svn: 11229
 2004-02-09 05:16:30 +00:00
Chris Lattner
16690fad3d Adjust to the changed StructType interface. In particular, getElementTypes() is gone. 
llvm-svn: 11228
 2004-02-09 04:37:31 +00:00
Chris Lattner
a1757d1d91 Start using the new and improve interface to FunctionType arguments 
llvm-svn: 11224
 2004-02-09 04:14:01 +00:00
Chris Lattner
6ef23e7e64 The ConstantExpr::getCast call can cause a CPR to be generated. If so, 
strip it off.

llvm-svn: 11213
 2004-02-09 00:20:55 +00:00
Misha Brukman
58ca173834 Fix grammar-o. 
llvm-svn: 11210
 2004-02-08 22:27:33 +00:00
Chris Lattner
a9887d33e8 Improve compatibility with programs that already have a prototype for 'write', 
even if it is wierd in some way.

llvm-svn: 11207
 2004-02-08 22:14:44 +00:00
Chris Lattner
68fdb35576 rename the "exceptional" destination of an invoke instruction to the 'unwind' dest 
llvm-svn: 11202
 2004-02-08 21:44:31 +00:00
Chris Lattner
70d893a160 Fix PR225: [pruneeh] -pruneeh pass removes invoke instructions it shouldn't 
llvm-svn: 11200
 2004-02-08 21:15:59 +00:00
Chris Lattner
46c84561b2 splitBasicBlock "does the right thing" now, no reason to reposition it. 
llvm-svn: 11199
 2004-02-08 20:49:07 +00:00
Chris Lattner
1c646349df Implement proper invoke/unwind lowering. 
This fixed PR16 "[lowerinvoke] The -lowerinvoke pass does not insert calls to setjmp/longjmp"

llvm-svn: 11195
 2004-02-08 19:53:56 +00:00
Chris Lattner
f549f9473e Add a call to 'write' right before the call to abort() in the unwind path. 
This causes the JIT, or LLC'd program to print out a nice message, explaining
WHY the program aborted.

llvm-svn: 11184
 2004-02-08 07:30:29 +00:00
Chris Lattner
3f57a7faab Fix another dominator update bug. These bugs keep getting exposed because GCSE 
keeps finding more code motion opportunities now that the dominators are correct!

llvm-svn: 11142
 2004-02-05 23:20:59 +00:00
Chris Lattner
f2a8b9e75b Fix bug updating dominators 
llvm-svn: 11140
 2004-02-05 22:33:26 +00:00
Chris Lattner
3846a304eb Add debug output 
llvm-svn: 11139
 2004-02-05 22:33:19 +00:00
Chris Lattner
6875c14234 Fix PR223: Loopsimplify incorrectly updates dominator information 
The problem is that the dominator update code didn't "realize" that it's
possible for the newly inserted basic block to dominate anything.  Because
it IS possible, stuff was getting updated wrong.

llvm-svn: 11137
 2004-02-05 21:12:24 +00:00
Chris Lattner
342b7276d6 Minor speedup, don't query ValueMap each time through the loop 
llvm-svn: 11123
 2004-02-04 21:44:26 +00:00
Chris Lattner
cbe1dd55f4 Two changes: 
1. Don't scan to the end of alloca instructions in the caller function to
     insert inlined allocas, just insert at the top.  This saves a lot of
     time inlining into functions with a lot of allocas.
  2. Use splice to move the alloca instructions over, instead of remove/insert.
     This allows us to transfer a block at a time, and eliminates a bunch of
     silly symbol table manipulations.

This speeds up the inliner on the testcase in PR209 from 1.73s -> 1.04s (67%)

llvm-svn: 11118
 2004-02-04 21:33:42 +00:00
Chris Lattner
790d7321b4 Optimize the case where we are inlining a function that contains only one basic block, 
and that basic block ends with a return instruction.  In this case, we can just splice
the cloned "body" of the function directly into the source basic block, avoiding a lot
of rearrangement and splitBasicBlock's linear scan over the split block.  This speeds up
the inliner on the testcase in PR209 from 2.3s to 1.7s, a 35% reduction.

llvm-svn: 11116
 2004-02-04 04:17:06 +00:00
Chris Lattner
68aef33986 Adjust to the new BasicBlock ctor, which requires a function parameter 
llvm-svn: 11114
 2004-02-04 03:58:28 +00:00
Chris Lattner
d655075e9d Remove unneeded code now that splitBasicBlock does the "right thing" 
llvm-svn: 11111
 2004-02-04 03:21:51 +00:00
Chris Lattner
8f0a362cd4 More refactoring. Move alloca instructions and handle invoke instructions 
before we delete the original call site, allowing slight simplifications of
code, but nothing exciting.

llvm-svn: 11109
 2004-02-04 02:51:48 +00:00
Chris Lattner
ab01a0e982 Move the cloning of the function body much earlier in the inlinefunction 
process.  The only optimization we did so far is to avoid creating a
PHI node, then immediately destroying it in the common case where the
callee has one return statement.  Instead, we just don't create the return
value.  This has no noticable performance impact, but paves the way for
future improvements.

llvm-svn: 11108
 2004-02-04 01:41:09 +00:00
Chris Lattner
aa44b4de3e Give CloneBasicBlock an optional function argument to specify which function 
to add the cloned block to.  This allows the block to be added to the function
immediately, and all of the instructions to be immediately added to the function
symbol table, which speeds up the inliner from 3.7 -> 3.38s on the PR209.

llvm-svn: 11107
 2004-02-04 01:19:43 +00:00
Chris Lattner
2998d508b0 Bunch up all locally used allocas by the block they are allocated in, and 
process them all as a group.  This speeds up SRoA/mem2reg from 28.46s to
0.62s on the testcase from PR209.

llvm-svn: 11100
 2004-02-03 22:34:12 +00:00
Chris Lattner
eee884cc98 Handle extremely trivial cases extremely efficiently. This speeds up 
SRoA/mem2reg from 41.2s to 27.5s on the testcase in PR209.

llvm-svn: 11099
 2004-02-03 22:00:33 +00:00
Chris Lattner
f2a481f7f8 Disable (x - (y - z)) => (x + (z - y)) optimization for floating point. 
llvm-svn: 11083
 2004-02-02 20:09:56 +00:00
Chris Lattner
343ab20a2d Update comment 
llvm-svn: 11082
 2004-02-02 20:09:22 +00:00
Brian Gaeke
1aa59f5107 Make deadarghaX0r warning louder. 
(I just love typing haX0r.   haX0r haX0r haX0r.)

llvm-svn: 11079
 2004-02-02 19:32:27 +00:00
Chris Lattner
824015593c Disable tail duplication in any "hard" cases, where it might break SSA form. 
llvm-svn: 11052
 2004-02-01 06:32:28 +00:00
Chris Lattner
3575c84933 Fix the count of the number of instructions removed 
llvm-svn: 11049
 2004-02-01 05:15:07 +00:00
Misha Brukman
6d62b1ee69 Hyphenate `target-dependent' 
llvm-svn: 11003
 2004-01-28 20:43:01 +00:00
Chris Lattner
f149ec635a Fix InstCombine/2004-01-13-InstCombineInvokePHI.ll, which also fixes lots 
of C++ programs in Shootout-C++, including lists1 and moments, etc

llvm-svn: 10845
 2004-01-14 06:06:08 +00:00
Chris Lattner
7bfaf8bba8 Clean up #includes 
llvm-svn: 10799
 2004-01-12 19:56:36 +00:00
Chris Lattner
68c5d9e0d6 Fix bug in previous checkin 
llvm-svn: 10798
 2004-01-12 19:47:05 +00:00
Chris Lattner
7d2328f69c Eliminate use of ConstantHandling and ConstantExpr::getShift interfaces 
llvm-svn: 10796
 2004-01-12 19:35:11 +00:00
Chris Lattner
f4c2dcbe21 Add header file I accidentally removed in teh shuffle 
llvm-svn: 10795
 2004-01-12 19:15:20 +00:00
Chris Lattner
de401bbd4b Remove use of the ConstantHandling interfaces 
llvm-svn: 10793
 2004-01-12 19:12:50 +00:00
Chris Lattner
47e9056669 Remove use of ConstantExpr::getShift 
llvm-svn: 10792
 2004-01-12 19:10:58 +00:00
Chris Lattner
758109ce2e Don't use ConstantExpr::getShift anymore 
llvm-svn: 10791
 2004-01-12 19:08:43 +00:00
Chris Lattner
23da5dbed6 Remove use of ConstantHandling 
llvm-svn: 10789
 2004-01-12 18:35:03 +00:00
Chris Lattner
4db788b6c5 Remove unneeded #include 
llvm-svn: 10788
 2004-01-12 18:33:54 +00:00
Chris Lattner
7242f6af5f Move llvm::ConstantFoldInstruction from VMCore to here, next to ConstantFoldTerminator 
llvm-svn: 10785
 2004-01-12 18:25:22 +00:00
Chris Lattner
a5101c4743 Remove uses of ConstantHandling itf 
llvm-svn: 10783
 2004-01-12 18:12:44 +00:00
Chris Lattner
5a9246fb56 Use constantexprs for casts. Eliminate use of the ConstantHandling interfaces 
llvm-svn: 10779
 2004-01-12 17:43:40 +00:00