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2004-02-11Remove obsolete comment. Unreachable blocks will automatically be left at theChris Lattner
end of the function. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11313 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-11Add an _embarassingly simple_ implementation of basic block layout. This isChris Lattner
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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11311 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-11Implement SimplifyCFG/PhiEliminate.llChris Lattner
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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11307 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-11The hasConstantReferences predicate always returns false.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11301 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-10initialization calls now return argc. If the program uses the argc valueChris Lattner
passed into main, make sure they use the return value of the init call instead of the one passed in. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11262 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-09Only add the global variable with the abort message if an unwind actuallyChris Lattner
occurs in the program. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11249 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-09Don't depend on auto data conversionChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11229 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-09Adjust to the changed StructType interface. In particular, ↵Chris Lattner
getElementTypes() is gone. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11228 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-09Start using the new and improve interface to FunctionType argumentsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11224 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-09The ConstantExpr::getCast call can cause a CPR to be generated. If so,Chris Lattner
strip it off. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11213 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-08Fix grammar-o.Misha Brukman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11210 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-08Improve compatibility with programs that already have a prototype for 'write',Chris Lattner
even if it is wierd in some way. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11207 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-08rename the "exceptional" destination of an invoke instruction to the ↵Chris Lattner
'unwind' dest git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11202 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-08Fix PR225: [pruneeh] -pruneeh pass removes invoke instructions it shouldn'tChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11200 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-08splitBasicBlock "does the right thing" now, no reason to reposition it.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11199 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-08Implement proper invoke/unwind lowering.Chris Lattner
This fixed PR16 "[lowerinvoke] The -lowerinvoke pass does not insert calls to setjmp/longjmp" git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11195 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-08Add a call to 'write' right before the call to abort() in the unwind path.Chris Lattner
This causes the JIT, or LLC'd program to print out a nice message, explaining WHY the program aborted. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11184 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-05Fix another dominator update bug. These bugs keep getting exposed because GCSEChris Lattner
keeps finding more code motion opportunities now that the dominators are correct! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11142 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-05Fix bug updating dominatorsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11140 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-05Add debug outputChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11139 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-05Fix PR223: Loopsimplify incorrectly updates dominator informationChris Lattner
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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11137 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-04Minor speedup, don't query ValueMap each time through the loopChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11123 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-04Two changes:Chris Lattner
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%) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11118 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-04Optimize the case where we are inlining a function that contains only one ↵Chris Lattner
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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11116 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-04Adjust to the new BasicBlock ctor, which requires a function parameterChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11114 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-04Remove unneeded code now that splitBasicBlock does the "right thing"Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11111 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-04More refactoring. Move alloca instructions and handle invoke instructionsChris Lattner
before we delete the original call site, allowing slight simplifications of code, but nothing exciting. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11109 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-04Move the cloning of the function body much earlier in the inlinefunctionChris Lattner
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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11108 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-04Give CloneBasicBlock an optional function argument to specify which functionChris Lattner
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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11107 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-03Bunch up all locally used allocas by the block they are allocated in, andChris Lattner
process them all as a group. This speeds up SRoA/mem2reg from 28.46s to 0.62s on the testcase from PR209. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11100 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-03Handle extremely trivial cases extremely efficiently. This speeds upChris Lattner
SRoA/mem2reg from 41.2s to 27.5s on the testcase in PR209. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11099 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-02Disable (x - (y - z)) => (x + (z - y)) optimization for floating point.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11083 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-02Update commentChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11082 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-02Make deadarghaX0r warning louder.Brian Gaeke
(I just love typing haX0r. haX0r haX0r haX0r.) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11079 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-01Disable tail duplication in any "hard" cases, where it might break SSA form.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11052 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-01Fix the count of the number of instructions removedChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11049 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-28Hyphenate `target-dependent'Misha Brukman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11003 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-14Fix InstCombine/2004-01-13-InstCombineInvokePHI.ll, which also fixes lotsChris Lattner
of C++ programs in Shootout-C++, including lists1 and moments, etc git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10845 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12Clean up #includesChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10799 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12Fix bug in previous checkinChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10798 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12Eliminate use of ConstantHandling and ConstantExpr::getShift interfacesChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10796 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12Add header file I accidentally removed in teh shuffleChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10795 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12Remove use of the ConstantHandling interfacesChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10793 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12Remove use of ConstantExpr::getShiftChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10792 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12Don't use ConstantExpr::getShift anymoreChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10791 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12Remove use of ConstantHandlingChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10789 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12Remove unneeded #includeChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10788 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12Move llvm::ConstantFoldInstruction from VMCore to here, next to ↵Chris Lattner
ConstantFoldTerminator git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10785 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12Remove uses of ConstantHandling itfChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10783 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12Use constantexprs for casts. Eliminate use of the ConstantHandling interfacesChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10779 91177308-0d34-0410-b5e6-96231b3b80d8
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