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2008-06-18XOR32rr, etc. are not AsCheapAsMove, but MOV32ri, etc. are.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52454 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-18Reapply r52396, it was unrelated to the breakage (that was caused by r52397, myMatthijs Kooijman
commit after this). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52453 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-18Complete support for two-address pass rematerialization. Now *almost* always ↵Evan Cheng
a win. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52452 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-18Add MachineRegisterInfo::use_empty.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52451 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-18Cosmetic.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52450 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-18If compiling for PPC on an i386 box, the LTO wouldn't get the altivec (andBill Wendling
other) feature information. The workaround is inelegant and could be cleaned up if this information were available some other way (say, in the IR). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52447 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-18implement some simple bswap optimizations, rdar://5992453Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52442 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-18temporarily revert this testcase since its patch was reverted.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52441 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-18make truncate/sext elimination capable of changing phi's. This Chris Lattner
implements rdar://6013816 and the testcase in Transforms/InstCombine/sext-misc.ll. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52440 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-18Unbreak DECLARE isel in pic mode.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52439 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-18Preserve dominance frontier while trivially unswitching loop.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52438 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-18Check empty dominance frontier.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52437 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-17Auto-upgrade code for multiple-value return statements. This codeDan Gohman
isn't actually called yet. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52435 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-17In InsertValueInst's copy ctor, actually copy the operands.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52434 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-17We don't want to find dependencies within the same block in this case. It ↵Owen Anderson
leads to incorrect results because we're detecting something at or after the call we're querying on. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52433 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-17Implement the ExtractValueInst::getIndexedType that accepts oneDan Gohman
index value. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52432 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-17Live-through live interval is [mbb start, mbb end+1].Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52431 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-17When extending a liveinterval by commuting, don't throw away the live ranges ↵Evan Cheng
that are not affected. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52430 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-17Consistently set "Buckets[NumBuckets] = reinterpret_cast<void*>(-1)" ↵Ted Kremenek
throughout FoldingSet.cpp. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52425 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-17Add an insertBefore method for attaching previously unattached instructions,Owen Anderson
such as those created by clone(), to a basic block. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52424 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-17Fix use of placement new to actually use an address. Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52423 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-17It's not safe to remove SUBREG_TO_REG that looks like identity copies, e.g. ↵Evan Cheng
movl %eax, %eax on x86-64 actually does a zero-extend. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52421 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-17Add one more 'magic' define :)Anton Korobeynikov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52420 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-17Unbreak non-PPC buildsAnton Korobeynikov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52419 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-17Provide generic hooks for icache invalidation. Add PPC implementation.Anton Korobeynikov
Patch by Gary Benson! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52418 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-17revert recent patch which is causing widespread breakage.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52415 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-17Don't forget to initialize SymbolSearchingDisabled.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52414 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-17Fix typo that changed the logic to something wrong.Duncan Sands
Spotted by Nick Lewycky. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52411 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-17Split type expansion into ExpandInteger and ExpandFloatDuncan Sands
rather than bundling them together. Rename FloatToInt to PromoteFloat (better, if not perfect). Reorganize files by types rather than by operations. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52408 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-17Forgot to commit the ValueTracking header file along with r52396.Matthijs Kooijman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52401 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-17Learn IPConstProp to propagate arguments that are directly returned. StrictlyMatthijs Kooijman
speaking these are not constant values. However, when a function always returns one of its arguments, then from the point of view of each caller the return value is constant (or at least a known value) and can be replaced. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52397 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-17Learn IPConstProp to look at individual return values and propagate themMatthijs Kooijman
individually. Also learn IPConstProp how returning first class aggregates work, in addition to old style multiple return instructions. Modify the return-constants testscase to confirm this behaviour. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52396 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-1780 column fixes.Matthijs Kooijman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52391 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-17Use a SmallVector instead of an array, since auto_ptr doesn't handle arraysMatthijs Kooijman
properly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52390 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-17add a new -enable-value-prop flag for llcbeta, that enables propagationChris Lattner
of value info (sign/zero ext info) from one MBB to another. This doesn't handle much right now because of two limitations: 1) only handles zext/sext, not random bit propagation (no assert exists for this) 2) doesn't handle phis. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52383 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-17Fix spelling.Duncan Sands
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52381 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-17Rather than avoiding to wrap ISD::DECLARE GV operand in X86ISD::Wrapper, ↵Evan Cheng
simply handle it at dagisel time with x86 specific isel code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52377 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-16Add a missing ~ (dtor became ctor) which caused crashes on a bunch of stuff.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52374 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-16Do not issue identity copies.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52373 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-16Refine the change in r52258 for avoiding use-before-def conditionsDan Gohman
when changing the stride of a comparison so that it's slightly more precise, by having it scan the instruction list to determine if there is a use of the condition after the point where the condition will be inserted. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52371 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-16switch TypeHasCycleThroughItself from using an std::set to using a SmallPtrSet,Chris Lattner
this speeds up the linking testcase in PR1860 by 44% (.379 -> 0.263) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52365 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-16stop making PATypeHolder's so crazily.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52364 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-16Horizontal-add instructions are not commutative.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52363 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-16Switch over to SetVector to ensure same order of iterations do not vary ↵Evan Cheng
across runs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52361 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-16Move some documentation from the header file into ProgrammersManual. About ↵Gabor Greif
to improve. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52360 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-16use a real associative container for type association instead of usingChris Lattner
a vector with a linear search. This speeds up the linking testcase in PR1860 from 0.965s to 0.385s on my system. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52357 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-16- Add "Commutative" property to intrinsics. This allows tblgen to generate ↵Evan Cheng
the commuted variants for dagisel matching code. - Mark lots of X86 intrinsics as "Commutative" to allow load folding. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52353 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-16mpsadbw is commutable.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52352 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-16bail out sooner if we have two concrete but different types.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52351 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-16simplify some code.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52350 91177308-0d34-0410-b5e6-96231b3b80d8
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