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2004-05-23minor wording changeChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13694 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-23Fix cases where we missed inlining some more obvious candidates because theChris Lattner
caller was in an SCC. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13693 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-23Simplify the interface and remove an unneeded #includeChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13692 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-23Fairly substantial changes to update the alias analysis we are querying asChris Lattner
we make the transformation. This allows us to use interprocedural alias analyses successfully. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13691 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-23Adjust to the changes in the AliasSetTracker interfaceChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13690 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-23Add support for replacement of formal arguments with simpler expressions.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13689 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-23Implement the -lowergc pass which is used by code generators (like the CBE)Chris Lattner
that do not have builtin support for garbage collection. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13688 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-23Recognize and verify the new GC intrinsics.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13687 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-23Changes to work with the changes to the AliasAnalysis interface. The -no-aaChris Lattner
class is now in the BasicAliasAnalysis.cpp file git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13684 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-23Move the -no-aa AA implementation into this file since both of theseChris Lattner
alias analysis implementations are special: they do not autoforward to a chained implementation of alias analysis git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13683 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-23Updates to work with the new auto-forwarding AA interface changesChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13682 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-23Fix a really nasty bug with the -disable-ds-field-sensitivity optionChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13681 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-23Update to match the autochaining interface that the AA interface usesChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13680 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-23Implement the interfaces to update value numbering information. Add anChris Lattner
assert. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13679 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-23Rename a methodChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13676 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-23Add a simple implementation of Andersen's interprocedural pointer analysisChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13666 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-23Fixed up my changes to add support for cloning Machine Instructions.Tanya Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13665 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-23Adding support to clone MachineInstrTanya Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13661 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-23Inline both direct and indirect callees in the CBU phase becauseVikram S. Adve
a direct callee may have indirect callees and so may have changed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13649 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-23Complete rewrite of the code that merges DS graphs for equivalence classesVikram S. Adve
of functions called at a common call site. The rewrite inlines the resulting graphs bottom-up on the SCCs of the CBU call graph. It also simplifies the merging of equivalence classes by exploiting the fact that functions in non-trivial SCCs are already merged. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13645 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-23Fix a typo in a comment.Brian Gaeke
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13643 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-21Fix for PR340: Verifier misses malformed switch instructionChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13618 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-20Fix to make the CBE always emit comparisons inline. Hopefully this willChris Lattner
fix the really bad code we're getting on PPC. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13609 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-20Fix a bug in outputting branches to constant PCs. Since the PC is supplied asBrian Gaeke
a full 64-bit address, it must be adjusted to fit in the branch instruction's immediate field. (This is only used in the reoptimizer, for now.) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13608 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-19Minor simplification: eliminate a dyn_cast.Brian Gaeke
Fix a typo in a debug message. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13607 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-19Add CloneTraceInto(), which is based on (and has mostly the sameBrian Gaeke
effects as) CloneFunctionInto(). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13601 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-19Move RemapInstruction() to ValueMapper, so that it can be shared withBrian Gaeke
CloneTrace, and because it is primarily an operation on ValueMaps. It is now a global (non-static) function which can be pulled in using ValueMapper.h. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13600 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-17Fold two assertions with backwards error messages into one with aBrian Gaeke
correct error message. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13590 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-14Clean up this pass somewhat:Brian Gaeke
Add better comments, including a better head-of-file comment. Prune #includes. Fix a FIXME that Chris put here by using doInitialization(). Use DEBUG() to print out debug msgs. Give names to basic blocks inserted by this pass. Expand tabs. Use InsertProfilingInitCall() from ProfilingUtils to insert the initialize call. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13581 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-14Don't keep track of references to LLVM BasicBlocks while emitting; useBrian Gaeke
MachineBasicBlocks instead. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13568 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-14Support MachineBasicBlock operands on RawFrm instructions.Brian Gaeke
Get rid of separate numbering for LLVM BasicBlocks; use the automatically generated MachineBasicBlock numbering. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13567 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-14Generate branch machine instructions with MachineBasicBlock operands instead ofBrian Gaeke
LLVM BasicBlock operands. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13566 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-13This was not meant to be committedChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13565 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-13Fix a nasty bug that caused us to unroll EXTREMELY large loops due to overflowChris Lattner
in the size calculation. This is not something you want to see: Loop Unroll: F[main] Loop %no_exit Loop Size = 2 Trip Count = 2147483648 - UNROLLING! The problem was that 2*2147483648 == 0. Now we get: Loop Unroll: F[main] Loop %no_exit Loop Size = 2 Trip Count = 2147483648 - TOO LARGE: 4294967296>100 Thanks to some anonymous person playing with the demo page that repeatedly caused zion to go into swapping land. That's one way to ensure you'll get a quick bugfix. :) Testcase here: Transforms/LoopUnroll/2004-05-13-DontUnrollTooMuch.ll git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13564 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-13Two more improvements for null pointer handling: storing a null pointerChris Lattner
and passing a null pointer into a function. For this testcase: void %test(int** %X) { store int* null, int** %X call void %test(int** null) ret void } we now generate this: test: sub %ESP, 12 mov %EAX, DWORD PTR [%ESP + 16] mov DWORD PTR [%EAX], 0 mov DWORD PTR [%ESP], 0 call test add %ESP, 12 ret instead of this: test: sub %ESP, 12 mov %EAX, DWORD PTR [%ESP + 16] mov %ECX, 0 mov DWORD PTR [%EAX], %ECX mov %EAX, 0 mov DWORD PTR [%ESP], %EAX call test add %ESP, 12 ret git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13558 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-13Second half of my fixed-sized-alloca patch. This folds the LEA to computeChris Lattner
the alloca address into common operations like loads/stores. In a simple testcase like this (which is just designed to excersize the alloca A, nothing more): int %test(int %X, bool %C) { %A = alloca int store int %X, int* %A store int* %A, int** %G br bool %C, label %T, label %F T: call int %test(int 1, bool false) %V = load int* %A ret int %V F: call int %test(int 123, bool true) %V2 = load int* %A ret int %V2 } We now generate: test: sub %ESP, 12 mov %EAX, DWORD PTR [%ESP + 16] mov %CL, BYTE PTR [%ESP + 20] *** mov DWORD PTR [%ESP + 8], %EAX mov %EAX, OFFSET G lea %EDX, DWORD PTR [%ESP + 8] mov DWORD PTR [%EAX], %EDX test %CL, %CL je .LBB2 # PC rel: F .LBB1: # T mov DWORD PTR [%ESP], 1 mov DWORD PTR [%ESP + 4], 0 call test *** mov %EAX, DWORD PTR [%ESP + 8] add %ESP, 12 ret .LBB2: # F mov DWORD PTR [%ESP], 123 mov DWORD PTR [%ESP + 4], 1 call test *** mov %EAX, DWORD PTR [%ESP + 8] add %ESP, 12 ret Instead of: test: sub %ESP, 20 mov %EAX, DWORD PTR [%ESP + 24] mov %CL, BYTE PTR [%ESP + 28] *** lea %EDX, DWORD PTR [%ESP + 16] *** mov DWORD PTR [%EDX], %EAX mov %EAX, OFFSET G mov DWORD PTR [%EAX], %EDX test %CL, %CL *** mov DWORD PTR [%ESP + 12], %EDX je .LBB2 # PC rel: F .LBB1: # T mov DWORD PTR [%ESP], 1 mov %EAX, 0 mov DWORD PTR [%ESP + 4], %EAX call test *** mov %EAX, DWORD PTR [%ESP + 12] *** mov %EAX, DWORD PTR [%EAX] add %ESP, 20 ret .LBB2: # F mov DWORD PTR [%ESP], 123 mov %EAX, 1 mov DWORD PTR [%ESP + 4], %EAX call test *** mov %EAX, DWORD PTR [%ESP + 12] *** mov %EAX, DWORD PTR [%EAX] add %ESP, 20 ret git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13557 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-13Substantially improve code generation for address exposed locals (aka fixedChris Lattner
sized allocas in the entry block). Instead of generating code like this: entry: reg1024 = ESP+1234 ... (much later) *reg1024 = 17 Generate code that looks like this: entry: (no code generated) ... (much later) t = ESP+1234 *t = 17 The advantage being that we DRAMATICALLY reduce the register pressure for these silly temporaries (they were all being spilled to the stack, resulting in very silly code). This is actually a manual implementation of rematerialization :) I have a patch to fold the alloca address computation into loads & stores, which will make this much better still, but just getting this right took way too much time and I'm sleepy. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13554 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-12Fix a really nasty bug from my changes on Monday to PHIElim. These changesChris Lattner
broke obsequi and a lot of other things. It all boiled down to MBB being overloaded in an inner scope and me confusing it with the one in the outer scope. Ugh! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13517 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-12Start NextMBBNumber out at zero.Brian Gaeke
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13515 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-12Add non-const MachineBasicBlock::getParent() accessor method.Brian Gaeke
MBBs start out as #-1. When a MBB is added to a MachineFunction, it gets the next available unique MBB number. If it is removed from a MachineFunction, it goes back to being #-1. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13514 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-12Pass boolean constants into function calls more efficiently, generating:Chris Lattner
mov DWORD PTR [%ESP + 4], 1 instead of: mov %EAX, 1 mov DWORD PTR [%ESP + 4], %EAX git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13494 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-12Do not pass in the same argument to the extracted function more than once, andChris Lattner
give the extracted function a more useful name than just foo_code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13493 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-12Implement support for code extracting basic blocks that have a returnChris Lattner
instruction in them. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13490 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-12Implement splitting of PHI nodes, allowing block extraction of BB's that haveChris Lattner
PHI node entries from multiple outside-the-region blocks. This also fixes extraction of the entry block in a function. Yaay. This has successfully block extracted all (but one) block from the score_move function in obsequi (out of 33). Hrm, I wonder which block the bug is in. :) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13489 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-12* Pull some code out into the definedInRegion/definedInCaller methodsChris Lattner
* Add a stub for the severSplitPHINodes which will allow us to bbextract bb's with PHI nodes in them soon. * Remove unused arguments from findInputsOutputs * Dramatically simplify the code in findInputsOutputs. In particular, nothing really cares whether or not a PHI node is using something. * Move moveCodeToFunction to after emitCallAndSwitchStatement as that's the order they get called. * Fix a bug where we would code extract a region that included a call to vastart. Like 'alloca', calls to vastart must stay in the function that they are defined in. * Add some comments. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13482 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-12Generate substantially better code when there are a limited number of exitsChris Lattner
from the extracted region. If the return has 0 or 1 exit blocks, the new function returns void. If it has 2 exits, it returns bool, otherwise it returns a ushort as before. This allows us to use a conditional branch instruction when there are two exit blocks, as often happens during block extraction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13481 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-12Two minor improvements:Chris Lattner
1. Get rid of the silly abort block. When doing bb extraction, we get one abort block for every block extracted, which is kinda annoying. 2. If the switch ends up having a single destination, turn it into an unconditional branch. I would like to add support for conditional branches, but to do this we will want to have the function return a bool instead of a ushort. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13478 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-10Switch this from using an std::map to using a DenseMap. This speeds upChris Lattner
phi-elimination from 0.6 to 0.54s on kc++. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13454 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-10Use a new VRegPHIUseCount to compute uses of PHI values by other phi valuesChris Lattner
in the basic block being processed. This fixes PhiElimination on kimwitu++ from taking 105s to taking a much more reasonable 0.6s (in a debug build). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13453 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-10Now that we use an ilist of machine instructions, iterators are more robustChris Lattner
than before. Because this is the case, we can compute the first non-phi instruction once when de-phi'ing a block. This shaves ~4s off of phielimination of _Z7yyparsev in kimwitu++ from 109s -> 105s. There are still much more important gains to come. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13452 91177308-0d34-0410-b5e6-96231b3b80d8
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