traversal, consider nodes for which the only successors are backedges
which the traversal is ignoring to be exit nodes. This fixes a problem
where the bottom-up traversal was failing to visit split blocks along
split loop backedges. This fixes rdar://10989035.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152421 91177308-0d34-0410-b5e6-96231b3b80d8
~0U might be i32 on 32-bit hosts, then (uint64_t)~0U might not be expected as (i64)0xFFFFFFFF_FFFFFFFF, but as (i64)0x00000000_FFFFFFFF.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152407 91177308-0d34-0410-b5e6-96231b3b80d8
negative switch cases if the branch condition is known to be positive.
Inspired by a recent improvement to GCC's VRP.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152405 91177308-0d34-0410-b5e6-96231b3b80d8
This contains a semi-functional skeleton for the implementation of the
LLVM bindings for Python.
The API for the Object.h interface is roughly designed but not
implemented. MemoryBufferRef is implemented and actually appears to
work!
The ObjectFile unit test fails with a segmentation fault because the
LLVM library isn't being properly initialized. The build system doesn't
know about this code yet, so no alerts should fire.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152397 91177308-0d34-0410-b5e6-96231b3b80d8
caused several clients to select the slow variation. =[ This is extra
annoying because we don't have any realistic way of testing this -- by
design, these two functions *must* compute the same value.
Found while inspecting the output of some benchmarks I'm working on.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152369 91177308-0d34-0410-b5e6-96231b3b80d8
introduced. Specifically, there are cost reductions for all
constant-operand icmp instructions against an alloca, regardless of
whether the alloca will in fact be elligible for SROA. That means we
don't want to abort the icmp reduction computation when we abort the
SROA reduction computation. That in turn frees us from the need to keep
a separate worklist and defer the ICmp calculations.
Use this new-found freedom and some judicious function boundaries to
factor the innards of computing the cost factor of any given instruction
out of the loop over the instructions and into static helper functions.
This greatly simplifies the code, and hopefully makes it more clear what
is happening here.
Reviewed by Eric Christopher. There is some concern that we'd like to
ensure this doesn't get out of hand, and I plan to benchmark the effects
of this change over the next few days along with some further fixes to
the inline cost.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152368 91177308-0d34-0410-b5e6-96231b3b80d8
Original commit message from r147481:
DAGCombine for transforming 128->256 casts into a vmovaps, rather
then a vxorps + vinsertf128 pair if the original vector came from a load.
Fix:
Unaligned loads need to generate a vmovups.
rdar://10974078
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152366 91177308-0d34-0410-b5e6-96231b3b80d8
The test fell back to the C backend, making it useless and it started to fail
on configurations that don't build the C backend.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152342 91177308-0d34-0410-b5e6-96231b3b80d8
buildbots. Original commit message:
[ADT] Change the trivial FoldingSetNodeID::Add* methods to be inline, reapplied
with a fix for the longstanding over-read of 32-bit pointer values.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152304 91177308-0d34-0410-b5e6-96231b3b80d8
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20120130/136146.html
Implemented CaseIterator and it solves almost all described issues: we don't need to mix operand/case/successor indexing anymore. Base iterator class is implemented as a template since it may be initialized either from "const SwitchInst*" or from "SwitchInst*".
ConstCaseIt is just a read-only iterator.
CaseIt is read-write iterator; it allows to change case successor and case value.
Usage of iterator allows totally remove resolveXXXX methods. All indexing convertions done automatically inside the iterator's getters.
Main way of iterator usage looks like this:
SwitchInst *SI = ... // intialize it somehow
for (SwitchInst::CaseIt i = SI->caseBegin(), e = SI->caseEnd(); i != e; ++i) {
BasicBlock *BB = i.getCaseSuccessor();
ConstantInt *V = i.getCaseValue();
// Do something.
}
If you want to convert case number to TerminatorInst successor index, just use getSuccessorIndex iterator's method.
If you want initialize iterator from TerminatorInst successor index, use CaseIt::fromSuccessorIndex(...) method.
There are also related changes in llvm-clients: klee and clang.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152297 91177308-0d34-0410-b5e6-96231b3b80d8
Original commit message:
Use uint16_t to store InstrNameIndices in MCInstrInfo. Add asserts to protect all 16-bit string table offsets. Also make sure the string to offset table string is not larger than 65536 characters since larger string literals aren't portable.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152296 91177308-0d34-0410-b5e6-96231b3b80d8
For example, this pattern
(select (setcc lhs, rhs, cc), true, 0)
is transformed to this one:
(select (setcc lhs, rhs, inverse(cc)), 0, true)
This enables MipsDAGToDAGISel::ReplaceUsesWithZeroReg (added in r152280) to
replace 0 with $zero.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152285 91177308-0d34-0410-b5e6-96231b3b80d8
analysis to be methods on the cost analysis's function info object
instead of the code metrics object. These really are just users of the
code metrics, they're building the information for the function's
analysis.
This is the first step of growing the amount of information we collect
about a function in order to cope with pair-wise simplifications due to
allocas.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152283 91177308-0d34-0410-b5e6-96231b3b80d8
For example, the first instruction in the code below can be eliminated if the
use of $vr0 is replaced with $zero:
addiu $vr0, $zero, 0
add $vr2, $vr1, $vr0
add $vr2, $vr1, $zero
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152280 91177308-0d34-0410-b5e6-96231b3b80d8
Allow targets to provide their own schedulers (subclass of
ScheduleDAGInstrs) to the misched pass. Select schedulers using
-misched=...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152278 91177308-0d34-0410-b5e6-96231b3b80d8
The ARM code generator makes aggressive assumptions about the encodings
being selected for branches which MCRelaxAll invalidates.
rdar://11006355
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152268 91177308-0d34-0410-b5e6-96231b3b80d8
code that will be relocated into another memory space.
Now when relocations are resolved, the address of
the relocation in the host memory (where the JIT is)
is passed separately from the address that the
relocation will be at in the target memory (where
the code will run).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152264 91177308-0d34-0410-b5e6-96231b3b80d8
ScheduleDAGInstrs will be the main interface for MI-level
schedulers. Make sure it's readable: one page of protected fields, one
page of public methids.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152258 91177308-0d34-0410-b5e6-96231b3b80d8
This fixes a build failure in webkit. Copying all elements shouldn't be
necessary, I'll look out for a better fix soon.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152252 91177308-0d34-0410-b5e6-96231b3b80d8
