replaceWithUniquedUnresolved
replaceWithUniquedUnresolvedChangedOperand
=>
replaceWithUniquedResolvingOperand
replaceWithUniquedChangingOperand
I find the new names less confusing; they're also more accurate. Sorry
for the churn.
llvm-svn: 233759
Even at -O0, we fall back to SDAG when we hit intrinsics, and if the intrinsic
is a memset/memcpy/etc. we might normally use vector types. At -O0, this is
probably not a good idea (because, if there is a bug in the lowering code,
there would be no good way to turn it off). At -O0, only use scalar preferred
types.
Related to PR22754.
llvm-svn: 233755
extended loads.
Implement the related target lowering hook so that the optimization has a better
estimation of the cost of an extension.
rdar://problem/19267165
llvm-svn: 233753
Uniqued nodes have more complete registration with
`ReplaceableMetadataImpl` so that they can update themselves when
operands change. Fix a bug where `MDNode::replaceWithUniqued()` wasn't
enabling these callbacks.
The two most obvious ways missing callbacks causes problems is that
auto-resolution fails and re-uniquing (on changed operands) just doesn't
happen. I've added tests for both -- in both cases, I confirmed that
the final check was failing before the fix.
rdar://problem/20365935
llvm-svn: 233751
The existing code in getMemsetValue only handled integer-preferred types when
the fill value was not a constant. Make this more robust in two ways:
1. If the preferred type is a floating-point value, do the mul-splat trick on
the corresponding integer type and then bitcast.
2. If the preferred type is a vector, do the mul-splat trick on one vector
element, and then build a vector out of them.
Fixes PR22754 (although, we should also turn off use of vector types at -O0).
llvm-svn: 233749
This patch fixes MCJIT::addGlobalMapping by changing the implementation of the
ExecutionEngineState class. The new implementation maintains a bidirectional
mapping between symbol names (std::strings) and addresses (uint64_ts), rather
than a mapping between Value*s and void*s.
This has fix has been made for backwards compatibility, however the strongly
preferred way to resolve unknown symbols is by writing a custom
RuntimeDyld::SymbolResolver (formerly RTDyldMemoryManager) and overriding the
findSymbol method. The addGlobalMapping method is a hangover from the legacy JIT
(which has was removed in 3.6), and may be deprecated in a future release as
part of a clean-up of the ExecutionEngine interface.
Patch by Murat Bolat. Thanks Murat!
llvm-svn: 233747
Specify an allocation order with a register class. This is used by register
allocators with a greedy heuristic. This is usefull as it is sometimes
beneficial to color more constrained classes first.
Differential Revision: http://reviews.llvm.org/D8626
llvm-svn: 233743
When allocating live intervals in linear order and all of them are local
to a single basic block you get an optimal coloring. This is also true
if you reverse the order, but it is not true if you sort live ranges
beginnings in reverse order, change to sort live range endings in
reverse order. Take the following live ranges for example:
|---| |--------|
|----------| |-------|
They get colored suboptimally with 3 registers if you sort the live range
starting points in reverse order (but optimally with live range begins in order,
or live range ends in reverse order).
Apparently the previous strategy was intentional because of allocation
time considerations. I am having a hard time replicating these effects,
while I see substantial improvements in allocation quality with this
change.
No testcase as none of the (in tree) targets use reverse order mode.
Differential Revision: http://reviews.llvm.org/D8625
llvm-svn: 233742
Change lowerCTPOP to:
- Gracefully handle a known-zero input value
- Simplify computation of significant bit size
Thanks to Jay Foad for the review!
llvm-svn: 233736
These regression tests are supposed to test small code model support, but have
been XFAIL'd because we don't have an in-tree memory manager that can guarantee
a small-code-model compatible memory layout. Unfortunately, they can
occasionally pass if they get lucky with memory allocation, causing unexpected
passes on the bots. That's not very helpful.
I'm going to remove these until we have the infrastructure (small-code-model
compatible memory manager) to run them properly.
llvm-svn: 233722
I suggested this change in D7898 (http://llvm.org/viewvc/llvm-project?view=revision&revision=231354)
It improves the v4i64 case although not optimally. This AVX codegen:
vmovq {{.*#+}} xmm0 = mem[0],zero
vxorpd %ymm1, %ymm1, %ymm1
vblendpd {{.*#+}} ymm0 = ymm0[0],ymm1[1,2,3]
Becomes:
vmovsd {{.*#+}} xmm0 = mem[0],zero
Unfortunately, this doesn't completely solve PR22685. There are still at least 2 problems under here:
We're not handling v32i8 / v16i16.
We're not getting the FP / int domains right for instruction selection.
But since this patch alone appears to do no harm, reduces code duplication, and helps v4i64,
I'm submitting this patch ahead of fixing the above.
Differential Revision: http://reviews.llvm.org/D8341
llvm-svn: 233704
So far, we do not yet support any instruction specific to zEC12.
Most of the facilities added with zEC12 are indeed not very useful
to compiler code generation, but there is one exception: the
miscellaneous-extensions facility provides the RISBGN instruction,
which is a variant of RISBG that does not set the condition code.
Add support for this facility, MC support for RISBGN, and CodeGen
support for prefering RISBGN over RISBG on zEC12, unless we can
actually make use of the condition code set by RISBG.
llvm-svn: 233690
We already exploit a number of instructions specific to z196,
but not yet POPCNT. Add support for the population-count
facility, MC support for the POPCNT instruction, CodeGen
support for using POPCNT, and implement the getPopcntSupport
TargetTransformInfo hook.
llvm-svn: 233689
This hooks up the TargetTransformInfo machinery for SystemZ,
and provides an implementation of getIntImmCost.
In addition, the patch adds the isLegalICmpImmediate and
isLegalAddImmediate TargetLowering overrides, and updates
a couple of test cases where we now generate slightly
better code.
llvm-svn: 233688
it more liberally.
SplitVecOp_TRUNCATE has logic for recursively splitting oversize vectors
that need more than one round of splitting to become legal. There are many
other ISD nodes that could benefit from this logic, so factor it out and
use it for FP_TO_UINT,FP_TO_SINT,SINT_TO_FP,UINT_TO_FP and FTRUNC.
llvm-svn: 233681
This is necessary for x86 where not all Sandybridge, Ivybrige, Haswell, and Broadwell CPUs support AVX. Currently we modify the CPU name back to Nehalem for this case, but that turns off additional features for these CPUs.
llvm-svn: 233673
We used to miss non-Q YMM integer vectors, and, non-Q/D XMM integer
vectors.
While there, change the v4i32 patterns to prefer MOVNTDQ.
llvm-svn: 233668
Unify the error messages for the various tools when `verifyModule()`
fails on an input module. The "brave new way" is:
lltool: path/to/input.ll: error: input module is broken!
llvm-svn: 233667
We'll no longer crash in the `verifyTypeRefs()` (used to be called
`verifyDebugInfo()`), so there's no reason to return early here. Remove
the `EverBroken` member since this was the only use!
llvm-svn: 233665
`verifyDebugInfo()` was doing two things:
- Asserting on unresolved type references.
- Calling `Verify()` functions for various types of debug info.
The `Verify()` functions have been gutted, so rename the function to
`verifyTypeRefs()` and explicitly check those. Instead of assertions,
we get nice error messages now.
llvm-svn: 233664
Move over the remaining (somewhat complicated) check from
`DISubprogram::Verify()`. I suspect this check could be optimized --
e.g., it would be nice not to do another full traversal here -- but it's
not exactly obvious how. For now, just bring it over as is.
Once we have a better model for the "canonical" subprogram of a
`Function`, we should enforce that all `!dbg` attachments lead to the
canonical one.
llvm-svn: 233663
Simplify implementation of `llvm::getDISubprogram()`. I might go
through and see how difficult it is to update the users, since this
function doesn't really seem necessary anymore.
llvm-svn: 233662
Remove the helper macros `RETURN_FROM_RAW()`,
`RETURN_DESCRIPTOR_FROM_RAW()`, and `RETURN_REF_FROM_RAW()`, since they
don't do anything too special anymore. This loses an `assert(get())`,
but I'm hoping any crashes were shaken out when r232844 landed a few
weeks ago.
llvm-svn: 233660
Most of these checks were already in the `Verifier` so this is more of a
cleanup. Now almost everything is over there.
Now that require a `name:` for `MDGlobalVariable`, add a check in
`LLParser` for it.
llvm-svn: 233657
Move definition of the debug info flags to the new hierarchy, but leave
them duplicated in `DIDescriptor` for now to reduce code churn. My
current plan is to remove `DIDescriptor` entirely, so the duplication
should go away naturally.
llvm-svn: 233656
