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2007-11-28Work around a GCC bug, producing this code:Chris Lattner
unsigned char *llvm_cbe_X; ... llvm_cbe_X = 0; *((void**)&llvm_cbe_X) = __builtin_stack_save(); instead of: llvm_cbe_X = __builtin_stack_save(); See PR1809 for details. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44415 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-28Implement ExpandOperationResult for ppc i64 fp->int, which fixesChris Lattner
CodeGen/Generic/fp_to_int.ll among others. Its unclear why this just started failing... git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44407 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-28for consistency, allow a fallthrough if the final check returns null.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44406 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-28Add some convenience methods for querying attributes, andDuncan Sands
use them. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44403 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-28My compiler complains that "x always evaluates to true"Duncan Sands
in this call: Result.IntVal = APInt(80, 2, x); What is x? uint16_t x[8]; I deduce that the APInt constructor being used is this one: APInt(uint32_t numBits, uint64_t val, bool isSigned = false); rather than this one: APInt(uint32_t numBits, uint32_t numWords, const uint64_t bigVal[]); That doesn't seem right! This fix compiles but is otherwise completely untested. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44400 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-28Add missing newlines at EOF.Duncan Sands
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44399 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-28Recover compile time regression.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44386 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-27Add MachineLoopInfo. This is not yet tested.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44384 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-27several entries got significantly better, though they still aren't done.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44382 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-27implement a trivial readme entry.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44380 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-27Fix a crash on invalid code due to memcpy lowering.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44378 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-27Make this actually work on systems that support ppc long double.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44374 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-27Unbreak all of the darwin/ppc32 JIT failures having to do Chris Lattner
with not being able to find printf. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44373 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-27Support returning non-power-of-2 vectors to unblock some workNate Begeman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44371 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-27something wrong with this optAndrew Lenharth
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44370 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-27Unbreak backwards compatibility with bytecode format. RegressionChris Lattner
introduced by this patch: http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20071126/055824.html git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44364 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
2007-11-27err, no really.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44352 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-27don't depend on ADL.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44351 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-27Make LoopInfoBase more generic, in preparation for having MachineLoopInfo. ↵Owen Anderson
This involves a small interface change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44348 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-26Don't lower srem/urem X%C to X-X/C*C unless the division is actuallyDan Gohman
optimized. This avoids creating illegal divisions when the combiner is running after legalize; this fixes PR1815. Also, it produces better code in the included testcase by avoiding the subtract and multiply when the division isn't optimized. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44341 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-26Fix another bug that was causing siod to fail.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44325 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-26Fix a silly bug that Nicholas noticed.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44324 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-26Allow GVN to eliminate read-only function calls when it can detect that they ↵Owen Anderson
are redundant. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44323 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-25Remove another leak. Due to some reason AliasSetTracker didn't had any dtor...Anton Korobeynikov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44320 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-25Add new SCEV, SCEVSMax. This allows LLVM to analyze do-while loops.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44319 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-25Implement PR1822Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44318 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-25Fix PR1816. If a bitcast of a function only exists because of aDuncan Sands
trivial difference in function attributes, allow calls to it to be converted to direct calls. Based on a patch by Török Edwin. While there, move the various lists of mutually incompatible parameters etc out of the verifier and into ParameterAttributes.h. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44315 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-25Fix a long standing deficiency in the X86 backend: we wouldChris Lattner
sometimes emit "zero" and "all one" vectors multiple times, for example: _test2: pcmpeqd %mm0, %mm0 movq %mm0, _M1 pcmpeqd %mm0, %mm0 movq %mm0, _M2 ret instead of: _test2: pcmpeqd %mm0, %mm0 movq %mm0, _M1 movq %mm0, _M2 ret This patch fixes this by always arranging for zero/one vectors to be defined as v4i32 or v2i32 (SSE/MMX) instead of letting them be any random type. This ensures they get trivially CSE'd on the dag. This fix is also important for LegalizeDAGTypes, as it gets unhappy when the x86 backend wants BUILD_VECTOR(i64 0) to be legal even when 'i64' isn't legal. This patch makes the following changes: 1) X86TargetLowering::LowerBUILD_VECTOR now lowers 0/1 vectors into their canonical types. 2) The now-dead patterns are removed from the SSE/MMX .td files. 3) All the patterns in the .td file that referred to immAllOnesV or immAllZerosV in the wrong form now use *_bc to match them with a bitcast wrapped around them. 4) X86DAGToDAGISel::SelectScalarSSELoad is generalized to handle bitcast'd zero vectors, which simplifies the code actually. 5) getShuffleVectorZeroOrUndef is updated to generate a shuffle that is legal, instead of generating one that is illegal and expecting a later legalize pass to clean it up. 6) isZeroShuffle is generalized to handle bitcast of zeros. 7) several other minor tweaks. This patch is definite goodness, but has the potential to cause random code quality regressions. Please be on the lookout for these and let me know if they happen. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44310 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-24Implement expand support for MERGE_VALUEs that only produces one result.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44304 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-24add a immAllZerosV_bc pattern fragment for consistency with others.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44303 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-24remove bogus assertion that broke CodeGen/Generic/cast-fp.ll on x86Chris Lattner
among others. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44302 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-24Implement support for custom legalization in DAGTypeLegalizer::ExpandOperand.Chris Lattner
Improve a comment. Unbreak Duncan's carefully written path compression where I didn't realize what was happening! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44301 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-24Several changes:Chris Lattner
1) Change the interface to TargetLowering::ExpandOperationResult to take and return entire NODES that need a result expanded, not just the value. This allows us to handle things like READCYCLECOUNTER, which returns two values. 2) Implement (extremely limited) support in LegalizeDAG::ExpandOp for MERGE_VALUES. 3) Reimplement custom lowering in LegalizeDAGTypes in terms of the new ExpandOperationResult. This makes the result simpler and fully general. 4) Implement (fully general) expand support for MERGE_VALUES in LegalizeDAGTypes. 5) Implement ExpandOperationResult support for ARM f64->i64 bitconvert and ARM i64 shifts, allowing them to work with LegalizeDAGTypes. 6) Implement ExpandOperationResult support for X86 READCYCLECOUNTER and FP_TO_SINT, allowing them to work with LegalizeDAGTypes. LegalizeDAGTypes now passes several more X86 codegen tests when enabled and when type legalization in LegalizeDAG is ifdef'd out. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44300 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-24add a noteChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44299 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-23Fix PR1816, by correcting the broken definition of APInt::countTrailingZeros.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44296 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-23simplify some code.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44295 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-23Fix APInt::countTrailingZeros to return BitWidth if the input is zero ↵Chris Lattner
instead of returning some random large number. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44294 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-23add a comment.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44293 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-23splice some lines together, no functionality change.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44292 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-23Ding dong, the DoesntAccessMemoryFns andDuncan Sands
OnlyReadsMemoryFns tables are dead! We get more, and more accurate, information from gcc via the readnone and readonly function attributes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44288 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-23Remove some logic I thoughtlessly copied overDuncan Sands
from the old ADCE implementation (there it was correct because the transform was being done for read-only functions). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44287 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-23Fix a bug where we'd try to find a scev value for a bitcast operand,Chris Lattner
even though the bitcast operand did not have integer type. This fixes PR1814. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44286 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-22Fix PR1817.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44284 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
2007-11-22Turn invokes of nounwind functions into ordinary calls.Duncan Sands
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44280 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-22Teach alias analysis about readnone/readonly functions.Duncan Sands
Based on a patch by Török Edwin. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44279 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-22Readonly/readnone functions are allowed to throwDuncan Sands
exceptions, so don't turn invokes of them into calls. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44278 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-22Rename the 'const' parameter attribute to 'readnone',Duncan Sands
and the 'pure' parameter attribute to 'readonly'. Names suggested by DannyB. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44273 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-22Instead of calculating constant factors, calculate the number of trailingNick Lewycky
bits. Patch from Wojciech Matyjewicz. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44268 91177308-0d34-0410-b5e6-96231b3b80d8
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