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2005-09-27Split SimpleConstantVal up into its components, so each Constant subclass getsChris Lattner
a different enum value. This allows 'classof' for these to be really simple, not needing to call getType() anymore. This speeds up isa/dyncast/etc for constants, and also makes them smaller. For example, the text section of a release build of InstCombine.cpp shrinks from 230037 bytes to 216363 bytes, a 6% reduction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23466 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-27Add support for external calls that we know how to constant fold. This ↵Chris Lattner
implements ctor-list-opt.ll:CTOR8 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23465 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-27add a new testcase for constant foldable callsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23464 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-27Fix a bug where we would evaluate stores into linkonce objects which could beChris Lattner
potentially replaced at link-time. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23463 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-27Implement support for static constructors with calls in them. This is usefulChris Lattner
because gccas runs globalopt before inlining. This implements ctor-list-opt.ll:CTOR7 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23462 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-27Add a more difficult testcase which uses a call to a helper function to doChris Lattner
the initialization git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23461 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-27Refactor this code a bit, no functionality changes.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23460 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-27Move the post-lsr simplify cfg pass after lowereh, so it can clean up afterChris Lattner
eh lowering as well. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23459 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-26minor pattern shufflingChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23458 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-26memoize the assert resultsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23457 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-26Emit the switch stmt cases in alphabetical order instead of pointer order,Chris Lattner
which is not stable. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23456 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-26Addition of a simple two pass scheduler. This version is currently hacked upJim Laskey
for testing and will require target machine info to do a proper scheduling. The simple scheduler can be turned on using -sched=simple (defaults to -sched=none) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23455 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-26implement a fixme: only select values once, even if used multiple times.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23454 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-26Remove some dead code. ctor evaluation subsumes empty ctor elimChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23453 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-26Add support for alloca, implementing ctor-list-opt.ll:CTOR6Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23452 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-26Testcase that uses an allocaChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23451 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-26Add a debug printout, fix a crash on kc++Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23450 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-26Implement loads/stores through GEP's of globals. This implementsChris Lattner
ctor-list-opt.ll:CTOR5. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23449 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-26add another case, this one that uses getelementptr instructionsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23448 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-26Replace TraverseGEPInitializer with ConstantFoldLoadThroughGEPConstantExprChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23447 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-26Eliminate GetGEPGlobalInitializer in favor of the more powerfulChris Lattner
ConstantFoldLoadThroughGEPConstantExpr function in the utils lib. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23446 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-26Factor the GetGEPGlobalInitializer out of this pass and into Transforms/UtilsChris Lattner
as ConstantFoldLoadThroughGEPConstantExpr. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23445 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-26Move the ConstantFoldLoadThroughGEPConstantExpr function out of the InstCombineChris Lattner
pass. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23444 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-26add a new functionChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23443 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-26add a commentChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23442 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-26Add support for getelementptr, load, and correctly reject volatile stores.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23441 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-26add a test for loadChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23440 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-26Add support for br/brcond/switch and phiChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23439 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-26add another testcase with simple control flowChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23438 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-26Add a simple interpreter to this code, allowing us to statically evaluateChris Lattner
global ctors that are simple enough. This implements ctor-list-opt.ll:CTOR2. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23437 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-26make this harder: put some code into itChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23436 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-26factor some code into a InstallGlobalCtors method, add comments. No ↵Chris Lattner
functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23435 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-26Make the global opt optimizer work on modules with a null terminator, byChris Lattner
accepting the null even with a non-65535 init prio git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23434 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-26Factor this code out into a few methods.Chris Lattner
Implement the start of global ctor optimization. It is currently smart enough to remove the global ctor for cases like this: struct foo { foo() {} } x; ... saving a bit of startup time for the program. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23433 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-26new testcase for static ctor list optimizationsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23432 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-25Fix VC++ build errors.Jeff Cohen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23431 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-25Fix some logic I broke that caused a regression onChris Lattner
SimplifyLibCalls/2005-05-20-sprintf-crash.ll git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23430 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-24Move MaskedValueIsZero up.Chris Lattner
Match a bunch of idioms for sign extensions, implementing InstCombine/signext.ll git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23428 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-24All of these should turn into sign extends (e.g. extsh/extsb on PPC)Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23427 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-24Add long-overdue helpers for getting constants with known upper bitsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23426 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-24Simplify this code a bit by relying on recursive simplification. SupportChris Lattner
sprintf("%s", P)'s that have uses. s/hasNUses(0)/use_empty()/ git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23425 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-24Enhance this to check for a crash, add a case that crashes simplifylibcalls,Chris Lattner
and add a case that has uses. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23424 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-24new testcase that crashes the CFEChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23423 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-24new testcase for PR630Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23422 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-24Add support for a marker byte that indicates that we shouldn't add the userChris Lattner
prefix to a symbol name git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23421 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-24change proto slightlyChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23420 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-24memoize translationsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23419 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-24Teach the dag isel generator how to construct arbitrary immediates. TheChris Lattner
generated isel now tries li then lis, then lis+ori. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23418 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-24Teach the DAG isel generator to emit code that creates nodes.Chris Lattner
Fix a few corner cases parsing things like (i32 imm:$foo) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23417 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-23Emit better code (no more copies for var references), and support DAG patternsChris Lattner
(e.g. things like rotates). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23416 91177308-0d34-0410-b5e6-96231b3b80d8
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