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2004-02-05In a "seeing the forest through the trees" kinda situation, I realized that aChris Lattner
complete rewrite of load-vn will make it a bit faster. This changes speeds up the gcse pass (which uses load-vn) from 25.45s to 0.42s on the testcase in PR209. I've also verified that this gives the exact same results as the old one. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11132 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-05This is a big diff with no functionality change. We just reorder some code,Chris Lattner
which causes big reindentation. While I'm at it, I fix the fixme by removing some dead code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11131 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-05finegrainify namespacificationChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11130 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-05Added missing include.Tanya Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11129 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-05Fixed Chris' typo.Tanya Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11128 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-05Implement optimizations for handling large basic blocks.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11126 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-04Modify the two address instruction pass to remove the duplicateAlkis Evlogimenos
operand of the instruction and thus simplify the register allocation. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11124 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
2004-02-04Take away the default iostream argument of createMachineFunctionPrinterPass(),Brian Gaeke
at Chris's request. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11120 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
2004-02-04IMULri* instructions do not require their first two registers operandsAlkis Evlogimenos
to be the same (IOW they are not two address instructions). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11117 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
2004-02-04Adjust to the new BB ctorChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11113 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
2004-02-04When splitting a basic block, insert the new half immediately after the firstChris Lattner
half. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11110 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
2004-02-04If changing a parent, don't add then remove the object from the leak detectorChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11106 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-03In BasicBlock::splitBasicBlock, just use islist::splice to move the ↵Chris Lattner
instructions, instead of a loop that is really inefficient with large basic blocks. This speeds up the inliner pass on the testcase in PR209 from 13.8s to 2.24s which still isn't exactly speedy, but is a lot better. :) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11105 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
2004-02-03Generate ftst instructions for comparison against zeroChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11098 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-03Add the ftst instructionChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11095 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-03Add support for one argument OneArgFP instructionsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11094 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-03When an instruction like: A += B had both A and B virtual registersAlkis Evlogimenos
spilled, A was loaded from its stack location twice. This fixes the bug. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11093 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-02Revert changes. Will implement this using a different set of primitivesAlkis Evlogimenos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11091 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-02Fix debugging output.Alkis Evlogimenos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11088 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-02Correctly update def/use information for modified machine operands.Alkis Evlogimenos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11087 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-02Should be more careful. The previously applied change made all countsAlkis Evlogimenos
outside of loops = 0. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11085 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-02Floating point negates are -0.0 - X, not 0.0 - XChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11084 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
2004-02-02No need to declare implicit uses/defs of ST0Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11081 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
2004-02-02Generate the fchs instruction to negate a floating point numberChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11078 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-02Add support for OneArgFPRW instructions, fix a couple of typeosChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11077 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-02Include PowerPC.h. Flesh out the stub versions of addPassesToEmitAssembly()Brian Gaeke
and addPassesToJITCompile() slightly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11076 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-02Add comments describing how you would add prototypes for factory methods forBrian Gaeke
PowerPC-specific passes here. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11073 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-02Codegen -0.0 correctly. Do not use fldz! This is another -0.0 == +0.0 ↵Chris Lattner
problem, arg. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11070 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-02Create an object for tracking physical register usage. This will lookAlkis Evlogimenos
much better when I get rid of the reserved registers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11066 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-01Second half of a fix for PR218 & ↵Chris Lattner
test/Regression/Assembler/2004-02-01-NegativeZero.llx. Basically we store floating point values as their integral components, instead of relying on the semantics of floating point < to differentiate between values. This is likely to make the map search be faster anyway. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11064 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-01Change weight array into a vector and make it as big as the number ofAlkis Evlogimenos
registers (not as the max number of registers). Change toSpill from a std::set into a std::vector<bool>. Use the reverse iterator adapter to do a reverse scan of allocatable registers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11061 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-01Use std::map::count() instead of std::map::find() != std::map::end()Alkis Evlogimenos
where appropriate. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11060 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-01Change string for joined intervals.Alkis Evlogimenos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11057 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-01FpMOV is also a move instruction.Alkis Evlogimenos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11055 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-01Change xor to ^.Alkis Evlogimenos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11054 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 a bug in a recent checkinChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11050 91177308-0d34-0410-b5e6-96231b3b80d8
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