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2005-12-05getRawValue zero extens for unsigned values, use getsextvalue so that weChris Lattner
know that small negative values fit into the immediate field of addressing modes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24608 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-05Wrap a long line, never internalize llvm.used.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24602 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-03Fix SimplifyCFG/2005-12-03-IncorrectPHIFold.llChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24581 91177308-0d34-0410-b5e6-96231b3b80d8
2005-11-30Fix a bug where we didn't realize that vaarg reads memory. This fixesChris Lattner
Transforms/DeadStoreElimination/2005-11-30-vaarg.ll git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24545 91177308-0d34-0410-b5e6-96231b3b80d8
2005-11-28a few more comments on the interfaces and functionsAndrew Lenharth
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24500 91177308-0d34-0410-b5e6-96231b3b80d8
2005-11-28Added documented rsprofiler interface. Also remove new profiler passes, theAndrew Lenharth
old ones have been updated to implement the interface. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24499 91177308-0d34-0410-b5e6-96231b3b80d8
2005-11-28Fix VC++ warning.Jeff Cohen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24496 91177308-0d34-0410-b5e6-96231b3b80d8
2005-11-28Random sampling (aka Arnold and Ryder) profiling. This is still ↵Andrew Lenharth
preliminary, but it works on spec on x86 and alpha. The idea is to allow profiling passes to remember what profiling they inserted, then a random sampling framework is inserted which consists of duplicated basic blocks (without profiling), such that at each backedge in the program and entry into every function, the framework chooses whether to use the instrumented code or the instrumentation free code. The goal of such a framework is to make it reasonably cheap to do random sampling of very expensive profiling products (such as load-value profiling). The code is organized into 3 parts (2 passes) 1) a linked set of profiling passes, which implement an analysis group (linked, like alias analysis are). These insert profiling into the program, and remember what they inserted, so that at a later time they can be queried about any instruction. 2) a pass that handles inserting the random sampling framework. This also has options to control how random samples are choosen. Currently implemented are Global counters, register allocated global counters, and read cycle counter (see? there was a reason for it). The profiling passes are almost identical to the existing ones (block, function, and null profiling is supported right now), and they are valid passes without the sampling framework (hence the existing passes can be unified with the new ones, not done yet). Some things are a bit ugly still, but that should be fixed up soon enough. Other todo? making the counter values not "magic 2^16 -1" values, but dynamically choosable. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24493 91177308-0d34-0410-b5e6-96231b3b80d8
2005-11-25since reg2mem requires it, might as well mention that it preserves itAndrew Lenharth
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24491 91177308-0d34-0410-b5e6-96231b3b80d8
2005-11-22Reg2Mem is something a pass may depend on, so allow thatAndrew Lenharth
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24488 91177308-0d34-0410-b5e6-96231b3b80d8
2005-11-22turns out, demotion and invokes and critical edges don't mixAndrew Lenharth
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24487 91177308-0d34-0410-b5e6-96231b3b80d8
2005-11-18Fix a crash building 176.gcc due to my recent patch, which only fixedChris Lattner
half the problem. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24414 91177308-0d34-0410-b5e6-96231b3b80d8
2005-11-18Implement a refinement to the mem2reg algorithm for cases where an allocaChris Lattner
has a single def. In this case, look for uses that are dominated by the def and attempt to rewrite them to directly use the stored value. This speeds up mem2reg on these values and reduces the number of phi nodes inserted. This should address PR665. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24411 91177308-0d34-0410-b5e6-96231b3b80d8
2005-11-18This needs proper dominanceChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24410 91177308-0d34-0410-b5e6-96231b3b80d8
2005-11-17This was checking the wrong GEP expression. Fixing this fixes a gccas crashChris Lattner
compiling mysql reported by Ted Kremenek. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24402 91177308-0d34-0410-b5e6-96231b3b80d8
2005-11-10the pain isn't gone unless the phinodes are spilled tooAndrew Lenharth
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24288 91177308-0d34-0410-b5e6-96231b3b80d8
2005-11-10this works with backedges to the existing entry block alot betterAndrew Lenharth
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24270 91177308-0d34-0410-b5e6-96231b3b80d8
2005-11-10The pass everyone has been waiting for!Andrew Lenharth
Reg2Mem for fun you can opt -reg2mem -mem2reg git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24267 91177308-0d34-0410-b5e6-96231b3b80d8
2005-11-05Add support alignment of allocation instructions.Nate Begeman
Add support for specifying alignment and size of setjmp jmpbufs. No targets currently do anything with this information, nor is it presrved in the bytecode representation. That's coming up next. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24196 91177308-0d34-0410-b5e6-96231b3b80d8
2005-11-05Implement Transforms/TailCallElim/return-undef.ll, a trivial caseChris Lattner
that has been sitting in my inbox since May 18. :) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24194 91177308-0d34-0410-b5e6-96231b3b80d8
2005-11-05Turn sdiv into udiv if both operands have a clear sign bit. This occursChris Lattner
a few times in crafty: OLD: %tmp.36 = div int %tmp.35, 8 ; <int> [#uses=1] NEW: %tmp.36 = div uint %tmp.35, 8 ; <uint> [#uses=0] OLD: %tmp.19 = div int %tmp.18, 8 ; <int> [#uses=1] NEW: %tmp.19 = div uint %tmp.18, 8 ; <uint> [#uses=0] OLD: %tmp.117 = div int %tmp.116, 8 ; <int> [#uses=1] NEW: %tmp.117 = div uint %tmp.116, 8 ; <uint> [#uses=0] OLD: %tmp.92 = div int %tmp.91, 8 ; <int> [#uses=1] NEW: %tmp.92 = div uint %tmp.91, 8 ; <uint> [#uses=0] Which all turn into shrs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24190 91177308-0d34-0410-b5e6-96231b3b80d8
2005-11-05Turn srem -> urem when neither input has their sign bit set. This triggersChris Lattner
8 times in vortex, allowing the srems to be turned into shrs: OLD: %tmp.104 = rem int %tmp.5.i37, 16 ; <int> [#uses=1] NEW: %tmp.104 = rem uint %tmp.5.i37, 16 ; <uint> [#uses=0] OLD: %tmp.98 = rem int %tmp.5.i24, 16 ; <int> [#uses=1] NEW: %tmp.98 = rem uint %tmp.5.i24, 16 ; <uint> [#uses=0] OLD: %tmp.91 = rem int %tmp.5.i19, 8 ; <int> [#uses=1] NEW: %tmp.91 = rem uint %tmp.5.i19, 8 ; <uint> [#uses=0] OLD: %tmp.88 = rem int %tmp.5.i14, 8 ; <int> [#uses=1] NEW: %tmp.88 = rem uint %tmp.5.i14, 8 ; <uint> [#uses=0] OLD: %tmp.85 = rem int %tmp.5.i9, 1024 ; <int> [#uses=2] NEW: %tmp.85 = rem uint %tmp.5.i9, 1024 ; <uint> [#uses=0] OLD: %tmp.82 = rem int %tmp.5.i, 512 ; <int> [#uses=2] NEW: %tmp.82 = rem uint %tmp.5.i1, 512 ; <uint> [#uses=0] OLD: %tmp.48.i = rem int %tmp.5.i.i161, 4 ; <int> [#uses=1] NEW: %tmp.48.i = rem uint %tmp.5.i.i161, 4 ; <uint> [#uses=0] OLD: %tmp.20.i2 = rem int %tmp.5.i.i, 4 ; <int> [#uses=1] NEW: %tmp.20.i2 = rem uint %tmp.5.i.i, 4 ; <uint> [#uses=0] it also occurs 9 times in gcc, but with odd constant divisors (1009 and 61) so the payoff isn't as great. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24189 91177308-0d34-0410-b5e6-96231b3b80d8
2005-11-02make this 64 bit clean, fixed test30 of ↵Andrew Lenharth
/Regression/Transforms/InstCombine/add.ll git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24158 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-31Limit the search depth of MaskedValueIsZero to 6 instructions, to avoidChris Lattner
bad cases. This fixes Markus's second testcase in PR639, and should seal it for good. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24123 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-29This pass is now obsolete since all targets have moved to the SelectionDAGChris Lattner
infrastructure and the simple isels have been removed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24090 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-29Remove dead #includeChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24083 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-29Now that instcombine does this xform, remove it from the -raise passChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24082 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-29Pull some code out into a function, give it the ability to see through +.Chris Lattner
This allows us to turn code like malloc(4*x+4) -> malloc int, (x+1) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24081 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-29Remove a special case, allowing the general case to handle it. No functionalityChris Lattner
change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24076 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-28Fix a bit of backwards logic that broke exptree and smg2000Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24056 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-27Do not sink any instruction with side effects, including vaarg. This fixesChris Lattner
PR640 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24046 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-27Fix #include orderChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24044 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-27Move some constant folding code shared by Analysis and Transform passesJohn Criswell
into the LLVMAnalysis library. This allows LLVMTranform and LLVMTransformUtils to be archives and linked with LLVMAnalysis.a, which provides any missing definitions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24036 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-27Fix typoChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24033 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-27Teach instcombine to promote stuff like (cast (malloc sbyte, 8*X) to int*)Chris Lattner
into: malloc int, (2*X) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24032 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-27Promote cases like cast (malloc sbyte, 100) to int* intoChris Lattner
(malloc [25 x int]) directly without having to convert to (malloc [100 x sbyte]) first. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24031 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-27Minor change to this file to support obscure cases with constant array amountsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24030 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-261. Remove libraries no longer created from the list of libraries linked into theJohn Criswell
SparcV9 JIT. 2. Make LLVMTransformUtils a relinked object file and always link it before LLVMAnalysis.a. These two libraries have circular dependencies on each other which creates problem when building the SparcV9 JIT. This change fixes the dependency on all platforms problems with a minimum of fuss. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24023 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-26fold nested and's early to avoid inefficiencies in MaskedValueIsZero. ThisChris Lattner
fixes a very slow compile in PR639. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24011 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-25Stop using deprecated typesAlkis Evlogimenos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23973 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-24Handle allocations that, even after removing dead uses, still have more thanChris Lattner
one use (but one is a cast). This handles the very common case of: X = alloc [n x byte] Y = cast X to somethingbetter seteq X, null In order to avoid infinite looping when there are multiple casts, we only allow this if the xform is strictly increasing the alignment of the allocation. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23961 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-24Fix a bug where we would 'promote' an allocation from one type to anotherChris Lattner
where the second has less alignment required. If we had explicit alignment support in the IR, we could handle this case, but we can't until we do. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23960 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-24Before promoting a malloc type, remove dead uses. This makes instcombineChris Lattner
more effective at promoting these allocations, catching them earlier in the compile process. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23959 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-24Pull some code out into a function, no functionality changeChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23958 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-24Remove some beta code that no longer has an owner.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23944 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-24Do not build the ProfilePaths directory anymoreChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23943 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-24DONT_BUILD_RELINKED is gone and implied by BUILD_ARCHIVE nowChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23940 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-24Only build .a file versions of these libraries, instead of .a and .o versions.Chris Lattner
This should speed up build times. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23933 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-24Make sure that anything using the ADCE pass pulls in the UnifyFunctionExitNodesChris Lattner
code git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23931 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-23When a function takes a variable number of pointer arguments, with a zeroJeff Cohen
pointer marking the end of the list, the zero *must* be cast to the pointer type. An un-cast zero is a 32-bit int, and at least on x86_64, gcc will not extend the zero to 64 bits, thus allowing the upper 32 bits to be random junk. The new END_WITH_NULL macro may be used to annotate a such a function so that GCC (version 4 or newer) will detect the use of un-casted zero at compile time. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23888 91177308-0d34-0410-b5e6-96231b3b80d8
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