e42732e75f
Implement test/Regression/Transforms/SimplifyCFG/UncondBranchToReturn.ll,
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see the testcase for the reasoning.
llvm-svn: 11496
2004-02-16 06:35:48 +00:00
4db2d22bea
Fold PHI nodes of constants which are only used by a single cast. This implements
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phi.ll:test4
llvm-svn: 11494
2004-02-16 05:07:08 +00:00
b36d908f7b
Teach LLVM to unravel the "swap idiom". This implements:
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Regression/Transforms/InstCombine/xor.ll:test20
llvm-svn: 11492
2004-02-16 03:54:20 +00:00
c207635fd5
Implement Transforms/InstCombine/xor.ll:test19
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llvm-svn: 11490
2004-02-16 01:20:27 +00:00
d85e061575
Instead of producing calls to setjmp/longjmp, produce uses of the
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llvm.setjmp/llvm.longjmp intrinsics.
llvm-svn: 11482
2004-02-15 22:24:27 +00:00
76b2ff4ded
Adjustments to support the new ConstantAggregateZero class
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llvm-svn: 11474
2004-02-15 05:55:15 +00:00
37a716fa80
Remove dependence on return type of ConstantStruct::get
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llvm-svn: 11466
2004-02-15 04:07:32 +00:00
c75bf528c1
Remove dependence on the return type of ConstantArray::get
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llvm-svn: 11463
2004-02-15 04:05:58 +00:00
283ffdfac5
Fix compilation of 126.gcc: intrinsic functions cannot throw, so they are not
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allowed in invoke instructions. Thus, if we are inlining a call to an intrinsic
function into an invoke site, we don't need to turn the call into an invoke!
llvm-svn: 11384
2004-02-13 16:47:35 +00:00
7db49ce5b4
Intrinsic functions cannot throw
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llvm-svn: 11383
2004-02-13 16:46:46 +00:00
7cbb22abe6
Expose a pass ID that can be 'required'
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llvm-svn: 11376
2004-02-13 16:16:16 +00:00
d4b36cf9bc
Remove obsolete comment. Unreachable blocks will automatically be left at the
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end of the function.
llvm-svn: 11313
2004-02-11 05:20:50 +00:00
5add05129e
Add an _embarassingly simple_ implementation of basic block layout. This is
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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
18d1f19fba
Implement SimplifyCFG/PhiEliminate.ll
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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
838b845781
The hasConstantReferences predicate always returns false.
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llvm-svn: 11301
2004-02-11 01:17:07 +00:00
3232bbb9d8
initialization calls now return argc. If the program uses the argc value
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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
37d46f4815
Only add the global variable with the abort message if an unwind actually
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occurs in the program.
llvm-svn: 11249
2004-02-09 22:48:47 +00:00
e3af6f73ce
Don't depend on auto data conversion
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llvm-svn: 11229
2004-02-09 05:16:30 +00:00
ac6db755c3
Adjust to the changed StructType interface. In particular, getElementTypes() is gone.
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llvm-svn: 11228
2004-02-09 04:37:31 +00:00
fa829be4d3
Start using the new and improve interface to FunctionType arguments
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llvm-svn: 11224
2004-02-09 04:14:01 +00:00
57ea2e3294
The ConstantExpr::getCast call can cause a CPR to be generated. If so,
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strip it off.
llvm-svn: 11213
2004-02-09 00:20:55 +00:00
3480e935d0
Fix grammar-o.
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llvm-svn: 11210
2004-02-08 22:27:33 +00:00
3b7f6b2217
Improve compatibility with programs that already have a prototype for 'write',
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even if it is wierd in some way.
llvm-svn: 11207
2004-02-08 22:14:44 +00:00
fae8ab3088
rename the "exceptional" destination of an invoke instruction to the 'unwind' dest
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llvm-svn: 11202
2004-02-08 21:44:31 +00:00
56997dd283
Fix PR225: [pruneeh] -pruneeh pass removes invoke instructions it shouldn't
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llvm-svn: 11200
2004-02-08 21:15:59 +00:00
071bc60450
splitBasicBlock "does the right thing" now, no reason to reposition it.
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llvm-svn: 11199
2004-02-08 20:49:07 +00:00
108cadc274
Implement proper invoke/unwind lowering.
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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
476488e669
Add a call to 'write' right before the call to abort() in the unwind path.
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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
2dd1c8d8ce
Fix another dominator update bug. These bugs keep getting exposed because GCSE
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keeps finding more code motion opportunities now that the dominators are correct!
llvm-svn: 11142
2004-02-05 23:20:59 +00:00
c0c953f0bc
Fix bug updating dominators
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llvm-svn: 11140
2004-02-05 22:33:26 +00:00
f978c421e5
Add debug output
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llvm-svn: 11139
2004-02-05 22:33:19 +00:00
14ab84a483
Fix PR223: Loopsimplify incorrectly updates dominator information
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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
39ad6f2772
Minor speedup, don't query ValueMap each time through the loop
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llvm-svn: 11123
2004-02-04 21:44:26 +00:00
6f8865bf9f
Two changes:
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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
0fa8c7c321
Optimize the case where we are inlining a function that contains only one basic block,
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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
8d414ad035
Adjust to the new BasicBlock ctor, which requires a function parameter
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llvm-svn: 11114
2004-02-04 03:58:28 +00:00
0ff9da5fed
Remove unneeded code now that splitBasicBlock does the "right thing"
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llvm-svn: 11111
2004-02-04 03:21:51 +00:00
18ef3fda57
More refactoring. Move alloca instructions and handle invoke instructions
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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
9fc977eac4
Move the cloning of the function body much earlier in the inlinefunction
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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
a6578ef318
Give CloneBasicBlock an optional function argument to specify which function
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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
ae51cae111
Bunch up all locally used allocas by the block they are allocated in, and
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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
3784188620
Handle extremely trivial cases extremely efficiently. This speeds up
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SRoA/mem2reg from 41.2s to 27.5s on the testcase in PR209.
llvm-svn: 11099
2004-02-03 22:00:33 +00:00
c2f0aa58df
Disable (x - (y - z)) => (x + (z - y)) optimization for floating point.
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llvm-svn: 11083
2004-02-02 20:09:56 +00:00
cacd30b957
Update comment
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llvm-svn: 11082
2004-02-02 20:09:22 +00:00
6204e75c4a
Make deadarghaX0r warning louder.
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(I just love typing haX0r. haX0r haX0r haX0r.)
llvm-svn: 11079
2004-02-02 19:32:27 +00:00
ed9b12c31a
Disable tail duplication in any "hard" cases, where it might break SSA form.
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llvm-svn: 11052
2004-02-01 06:32:28 +00:00
7c91a6176c
Fix the count of the number of instructions removed
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llvm-svn: 11049
2004-02-01 05:15:07 +00:00
bf43787f33
Hyphenate `target-dependent'
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llvm-svn: 11003
2004-01-28 20:43:01 +00:00
1f7942fe7d
Fix InstCombine/2004-01-13-InstCombineInvokePHI.ll, which also fixes lots
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of C++ programs in Shootout-C++, including lists1 and moments, etc
llvm-svn: 10845
2004-01-14 06:06:08 +00:00
6b052f2154
Clean up #includes
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llvm-svn: 10799
2004-01-12 19:56:36 +00:00
Chris Lattner