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2008-01-17DAE bug fix. Don't lose parameter attributes on vararg arguments.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46113 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-17Fix arg promotion to propagate the correct attrs on the calls toChris Lattner
promoted functions. This is important for varargs calls in particular. Thanks to duncan for providing a great testcase. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46108 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-16Handle attribute(used) global variables that are i8.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46090 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-16Do not strip llvm.used values.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46045 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-14Fix the miscompilation of MiBench/consumer-lame that was exposed by Evan'sChris Lattner
byval work. This miscompilation is due to the program indexing an array out of range and us doing a transformation that broke this. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45949 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-14The isNotSuitableForSRA property is now dead, don't compute it.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45948 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-14Change SRAGlobal to not depend on isNotSuitableForSRA, which makes it very Chris Lattner
difficult to understand the invariants. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45947 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-14Make the 'shrink global to bool' optimization more self contained, and thus Chris Lattner
easier to show that its safe. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45946 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-13Small simplification.Duncan Sands
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45932 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-12Allow clients to specify the inline threshold when creatingChris Lattner
the inliner pass. Patch by Robert Zeh. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45903 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11When DAE drops the varargs part of a function, ensure anyDuncan Sands
attributes on the vararg call arguments are also dropped. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45892 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11Teach argpromote to ruthlessly hack small byval structs when it canChris Lattner
get away with it, which exposes opportunities to eliminate the memory objects entirely. For example, we now compile byval.ll to: define internal void @f1(i32 %b.0, i64 %b.1) { entry: %tmp2 = add i32 %b.0, 1 ; <i32> [#uses=0] ret void } define i32 @main() nounwind { entry: call void @f1( i32 1, i64 2 ) ret i32 0 } This seems like it would trigger a lot for code that passes around small structs (e.g. SDOperand's or _Complex)... git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45886 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11Use smallptrset instead of std::set for efficiency.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45878 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11a byval argument is guaranteed to be valid to load.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45877 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11Update this code to use eraseFromParent where possible. ComputeChris Lattner
whether an argument is byval and pass into isSafeToPromoteArgument. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45876 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11replace a loop with a constant time check.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45875 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11another minor datastructure tweak.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45874 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11start using smallvector to avoid vector heap thrashing.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45873 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07Small cleanup for handling of type/parameter attributeDuncan Sands
incompatibility. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45704 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-06The transform that tries to turn calls to bitcast functions intoDuncan Sands
direct calls bails out unless caller and callee have essentially equivalent parameter attributes. This is illogical - the callee's attributes should be of no relevance here. Rework the logic, which incidentally fixes a crash when removed arguments have attributes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45658 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-04Fix PR1896Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45568 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-02add missing #includeChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45516 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-29Remove attribution from file headers, per discussion on llvmdev.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45418 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-29remove attribution from lib Makefiles.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45415 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-25Fixing several transforms which would drop the collector attributeGordon Henriksen
when copying functions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45356 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-21Make DAE not wipe out attributes on calls, and not dropDuncan Sands
return attributes on the floor. In the case of a call to a varargs function where the varargs arguments are being removed, any call attributes on those arguments need to be dropped. I didn't do this because I plan to make it illegal to have such attributes (see next patch). With this change, compiling the gcc filter2 eh test at -O0 and then running opt -std-compile-opts on it results in a correctly working program (compiling at -O1 or higher results in the test failing due to a problem with how we output eh info into the IR). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45285 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-19When inlining through an 'nounwind' call, mark inlinedDuncan Sands
calls 'nounwind'. It is important for correct C++ exception handling that nounwind markings do not get lost, so this transformation is actually needed for correctness. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45218 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-18Rename isNoReturn to doesNotReturn, and isNoUnwind toDuncan Sands
doesNotThrow. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45160 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-17Change the PointerType api for creating pointer types. The old functionality ↵Christopher Lamb
of PointerType::get() has become PointerType::getUnqual(), which returns a pointer in the generic address space. The new prototype of PointerType::get() requires both a type and an address space. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45082 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-10Make PruneEH update the nounwind/noreturn attributesDuncan Sands
on functions as it calculates them. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44802 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-03Rather than having special rules like "intrinsics cannotDuncan Sands
throw exceptions", just mark intrinsics with the nounwind attribute. Likewise, mark intrinsics as readnone/readonly and get rid of special aliasing logic (which didn't use anything more than this anyway). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44544 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-27Fix PR1146: parameter attributes are longer part ofDuncan Sands
the function type, instead they belong to functions and function calls. This is an updated and slightly corrected version of Reid Spencer's original patch. The only known problem is that auto-upgrading of bitcode files doesn't seem to work properly (see test/Bitcode/AutoUpgradeIntrinsics.ll). Hopefully a bitcode guru (who might that be? :) ) will fix it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44359 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-22Don't crash on bogus llvm.noinline. This is first part of PR1817 (preventing ↵Anton Korobeynikov
reduction) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44281 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-15Fix PR1788 by taking the approach suggested by Richard Smith.Chris Lattner
Thanks to him for his detailed analysis of the problem. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44162 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-14Allow the block extractor take to take a list of basic blocks to not extractNick Lewycky
from a file containing Function/BasicBlock pairings. This is not safe against anonymous or abnormally-named Funcs or BBs. Make bugpoint use this interface to pass the BBs list to the child bugpoint. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44101 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-13Fix the regression on Transforms/GlobalOpt/deadglobal-2.ll from myChris Lattner
patch on friday. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44068 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-09Tighten up a check for folding away loads from (newly constant) globals. ThisChris Lattner
fixes a crash on Transforms/GlobalOpt/2007-11-09-GEP-GEP-Crash.ll and rdar://5585488. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43949 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-05Deleting redundant copy of block extractor pass. See also PR1775.Gordon Henriksen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43694 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-04Finishing initial docs for all transformations in Passes.html.Gordon Henriksen
Also cleaned up some comments in source files. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43674 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-01Executive summary: getTypeSize -> getTypeStoreSize / getABITypeSize.Duncan Sands
The meaning of getTypeSize was not clear - clarifying it is important now that we have x86 long double and arbitrary precision integers. The issue with long double is that it requires 80 bits, and this is not a multiple of its alignment. This gives a primitive type for which getTypeSize differed from getABITypeSize. For arbitrary precision integers it is even worse: there is the minimum number of bits needed to hold the type (eg: 36 for an i36), the maximum number of bits that will be overwriten when storing the type (40 bits for i36) and the ABI size (i.e. the storage size rounded up to a multiple of the alignment; 64 bits for i36). This patch removes getTypeSize (not really - it is still there but deprecated to allow for a gradual transition). Instead there is: (1) getTypeSizeInBits - a number of bits that suffices to hold all values of the type. For a primitive type, this is the minimum number of bits. For an i36 this is 36 bits. For x86 long double it is 80. This corresponds to gcc's TYPE_PRECISION. (2) getTypeStoreSizeInBits - the maximum number of bits that is written when storing the type (or read when reading it). For an i36 this is 40 bits, for an x86 long double it is 80 bits. This is the size alias analysis is interested in (getTypeStoreSize returns the number of bytes). There doesn't seem to be anything corresponding to this in gcc. (3) getABITypeSizeInBits - this is getTypeStoreSizeInBits rounded up to a multiple of the alignment. For an i36 this is 64, for an x86 long double this is 96 or 128 depending on the OS. This is the spacing between consecutive elements when you form an array out of this type (getABITypeSize returns the number of bytes). This is TYPE_SIZE in gcc. Since successive elements in a SequentialType (arrays, pointers and vectors) need to be aligned, the spacing between them will be given by getABITypeSize. This means that the size of an array is the length times the getABITypeSize. It also means that GEP computations need to use getABITypeSize when computing offsets. Furthermore, if an alloca allocates several elements at once then these too need to be aligned, so the size of the alloca has to be the number of elements multiplied by getABITypeSize. Logically speaking this doesn't have to be the case when allocating just one element, but it is simpler to also use getABITypeSize in this case. So alloca's and mallocs should use getABITypeSize. Finally, since gcc's only notion of size is that given by getABITypeSize, if you want to output assembler etc the same as gcc then getABITypeSize is the size you want. Since a store will overwrite no more than getTypeStoreSize bytes, and a read will read no more than that many bytes, this is the notion of size appropriate for alias analysis calculations. In this patch I have corrected all type size uses except some of those in ScalarReplAggregates, lib/Codegen, lib/Target (the hard cases). I will get around to auditing these too at some point, but I could do with some help. Finally, I made one change which I think wise but others might consider pointless and suboptimal: in an unpacked struct the amount of space allocated for a field is now given by the ABI size rather than getTypeStoreSize. I did this because every other place that reserves memory for a type (eg: alloca) now uses getABITypeSize, and I didn't want to make an exception for unpacked structs, i.e. I did it to make things more uniform. This only effects structs containing long doubles and arbitrary precision integers. If someone wants to pack these types more tightly they can always use a packed struct. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43620 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-26More fleshing out of docs/Passes.html, plus some typo fixes andGordon Henriksen
improved wording in source files. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43377 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-24Fix off by 1 bug in printf->puts lowering.Dale Johannesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43309 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-18Fix PR1735 and Transforms/DeadArgElim/2007-10-18-VarargsReturn.ll byChris Lattner
fixing some obviously broken code :( git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43141 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-17Do not raise free() call that is called through invoke instruction.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43083 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-03Use empty() member functions when that's what's being tested for insteadDan Gohman
of comparing begin() and end(). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42585 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-03Fix PR1719, by not marking llvm.global.annotations internal.Tanya Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42578 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-03Fix PR1719, by not marking llvm.noinline internal.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42565 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-28minor long double related changesDale Johannesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42439 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-14Fix a logic error in ValueIsOnlyUsedLocallyOrStoredToOneGlobal that caused Chris Lattner
miscompilation of 188.ammp. Reject select and bitcast in ValueIsOnlyUsedLocallyOrStoredToOneGlobal because RewriteHeapSROALoadUser can't handle it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41950 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-13Teach GlobalLoadUsesSimpleEnoughForHeapSRA and the SROA rewriter how to handleChris Lattner
a limited form of PHI nodes. This finally fixes PR1639, speeding 179.art up from 7.84s to 3.13s on PPC. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41933 91177308-0d34-0410-b5e6-96231b3b80d8
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