Stack realignment occurs after the prolog, not during, for Win64.
Because of this, don't factor in the maximum stack alignment when
establishing a frame pointer.
This fixes PR22572.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230113 91177308-0d34-0410-b5e6-96231b3b80d8
Parse (and write) symbolic constants in debug info `flags:` fields.
This prevents a readability (and CHECK-ability) regression with the new
debug info hierarchy.
Old (well, current) assembly, with pretty-printing:
!{!"...\\0016387", ...} ; ... [public] [rvalue reference]
Flags field without this change:
!MDDerivedType(flags: 16387, ...)
Flags field with this change:
!MDDerivedType(flags: DIFlagPublic | DIFlagRValueReference, ...)
As discussed in the review thread, this isn't a final state. Most of
these flags correspond to `DW_AT_` symbolic constants, and we might
eventually want to support arbitrary attributes in some form. However,
as it stands now, some of the flags correspond to other concepts (like
`FlagStaticMember`); until things are refactored this is the simplest
way to move forward without regressing assembly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230111 91177308-0d34-0410-b5e6-96231b3b80d8
Split debug info 'flags' bitfield over a vector so the current flags can
be iterated over. This API (in combination with r230107) will be used
for assembly support for symbolic constants.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230108 91177308-0d34-0410-b5e6-96231b3b80d8
Add `DIDescriptor::getFlag(StringRef)` and
`DIDescriptor::getFlagString(unsigned)`. The latter only converts exact
matches; I'll add separate API for breaking the flags bitfield up into
parts.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230107 91177308-0d34-0410-b5e6-96231b3b80d8
Leverage `StringRef` inside keyword comparison macros. There's no
reason to be so low-level here, and I'm about to add another
`startswith()` use, so let's make it easy to read.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230100 91177308-0d34-0410-b5e6-96231b3b80d8
Previously, this pass ran over every function in the Module if added to the pass order. With this change, it runs only over those with a GC attribute where the GC explicitly opts in. A GC can also choose which of entry safepoint polls, backedge safepoint polls, and call safepoints it wants. I hope to get these exposed as checks on the GCStrategy at some point, but for now, the checks are manual string comparisons.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230097 91177308-0d34-0410-b5e6-96231b3b80d8
`do { ... } while (false)` is standard macro etiquette for forcing
instantiations into a single statement and requiring a `;` afterwards,
making statement-like macros easier to reason about (and harder to use
incorrectly).
I'm about to modify the macros in `LexIdentifier()`. I noticed that the
`KEYWORD` macro *does* follow the rule, so I thought I'd clean up the
other macros to match (otherwise might not be worth changing, since the
benefits of this pattern are fairly irrelevant here).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230095 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
Letting them begin at the PHI instruction slightly simplifies the code
but more importantly avoids breaking the assumption that live ranges
starting at the block begin are also live at the end of the predecessor
blocks. The MachineVerifier checks that but was apparently never run in
the few instances where liveranges are calculated for machine-SSA
functions.
Reviewers: qcolombet
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D7779
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230093 91177308-0d34-0410-b5e6-96231b3b80d8
These are internal options. I need to go through, evaluate which are worth keeping and which not. Many of them should probably be renamed as well. Until I have time to do that, we can at least stop poluting the standard opt -help output.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230088 91177308-0d34-0410-b5e6-96231b3b80d8
It is not correctly detecting the situations where the test is
unsupported. Reverting until we can figure it out.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230085 91177308-0d34-0410-b5e6-96231b3b80d8
This should be the last cleanup on non-llvm preferred data structures. I left one use of std::set in an assertion; DenseSet didn't seem to have a tombstone for CallSite defined. That might be worth fixing, but wasn't worth it for a debug only use.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230084 91177308-0d34-0410-b5e6-96231b3b80d8
I'd done the work of extracting the typedef in a previous commit, but didn't actually change it. Hopefully this will make any subtle changes easier to isolate.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230081 91177308-0d34-0410-b5e6-96231b3b80d8
The expansion code does the same thing. Since
the operands were not defined with the correct
types, this has the side effect of fixing operand
folding since the expanded pseudo would never use
SGPRs or inline immediates.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230072 91177308-0d34-0410-b5e6-96231b3b80d8
This enables a few useful combines that used to only
use fma.
Also since v_mad_f32 apparently does not support denormals,
disable the existing cases that are custom handled if they are
requested.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230071 91177308-0d34-0410-b5e6-96231b3b80d8
This allows sharing of FMA forming combines to work
with instructions that have the same semantics as a separate
multiply and add.
This is expand by default, and only formed post legalization
so it shouldn't have much impact on targets that do not want it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230070 91177308-0d34-0410-b5e6-96231b3b80d8
Use llvm_unreachable where appropriate, use SmallVector where easy to do so, introduce typedefs for planned type migrations.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230068 91177308-0d34-0410-b5e6-96231b3b80d8
The notion of a range of inserted safepoint related code is no longer really applicable. This survived over from an earlier implementation. Just saving the inserted gc.statepoint and working from that is far clearer given the current code structure. Particularly when invokable statepoints get involved.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230063 91177308-0d34-0410-b5e6-96231b3b80d8
Yet another chapter in the endless story. While this looks like we leave
the loop in a non-canonical state this replicates the logic in
LoopSimplify so it doesn't diverge from the canonical form in any way.
PR21968
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230058 91177308-0d34-0410-b5e6-96231b3b80d8
In the old (well, current) schema, there are two types of file
references: untagged and tagged (the latter references the former).
!0 = !{!"filename", !"/directory"}
!1 = !{!"0x29", !1} ; DW_TAG_file_type [filename] [/directory]
The interface to `DIBuilder` universally takes the tagged version,
described by `DIFile`. However, most `file:` references actually use
the untagged version directly.
In the new hierarchy, I'm merging this into a single node: `MDFile`.
Originally I'd planned to keep the old schema unchanged until after I
moved the new hierarchy into place.
However, it turns out to be trivial to make `MDFile` match both nodes at
the same time.
- Anyone referencing !1 does so through `DIFile`, whose implementation
I need to gut anyway (as I do the rest of the `DIDescriptor`s).
- Anyone referencing !0 just references an `MDNode`, and expects a
node with two `MDString` operands.
This commit achieves that, and updates all the testcases for the parts
of the new hierarchy that used the two-node schema (I've replaced the
untagged nodes with `distinct !{}` to make the diff clear (otherwise the
metadata all gets renumbered); it might be worthwhile to come back and
delete those nodes and renumber the world, not sure).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230057 91177308-0d34-0410-b5e6-96231b3b80d8
This patch introduces a new mechanism that allows IR modules to co-operatively
build pointer sets corresponding to addresses within a given set of
globals. One particular use case for this is to allow a C++ program to
efficiently verify (at each call site) that a vtable pointer is in the set
of valid vtable pointers for the class or its derived classes. One way of
doing this is for a toolchain component to build, for each class, a bit set
that maps to the memory region allocated for the vtables, such that each 1
bit in the bit set maps to a valid vtable for that class, and lay out the
vtables next to each other, to minimize the total size of the bit sets.
The patch introduces a metadata format for representing pointer sets, an
'@llvm.bitset.test' intrinsic and an LTO lowering pass that lays out the globals
and builds the bitsets, and documents the new feature.
Differential Revision: http://reviews.llvm.org/D7288
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230054 91177308-0d34-0410-b5e6-96231b3b80d8
usage of instruction ADDU16 by CodeGen. For this instruction an improper
register is allocated, i.e. the register that is not from register set defined
for the instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230053 91177308-0d34-0410-b5e6-96231b3b80d8
changes to remove non-Function based subtargets out of the asm
printer. For module level emission we'll need to construct up
an MCSubtargetInfo so that we can encode instructions for
emission.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230050 91177308-0d34-0410-b5e6-96231b3b80d8
When doing style cleanup, I noticed a minor bug in this code. If we have a pointer that we think is unused after a statepoint and thus doesn't need relocation, we store a null pointer into the alloca we're about to promote. This helps turn a mistake in liveness analysis into an easily debuggable crash. It turned out this code had never been updated to handle invoke statepoints.
There's no test for this. Without a bug in liveness, it appears impossible to make this trigger in a way which is visible in the resulting IR. We might store the null, but when promoting the alloca, there will be no uses and thus nothing to test against. Suggestions on how to test are very welcome.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230047 91177308-0d34-0410-b5e6-96231b3b80d8
This patch teaches X86FastISel how to select intrinsic 'convert_from_fp16' and
intrinsic 'convert_to_fp16'.
If the target has F16C, we can select VCVTPS2PHrr for a float-half conversion,
and VCVTPH2PSrr for a half-float conversion.
Differential Revision: http://reviews.llvm.org/D7673
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230043 91177308-0d34-0410-b5e6-96231b3b80d8
Starting to update variable naming and types to match LLVM style. This will be an incremental process to minimize the chance of breakage as I work. Step one, rename member variables to LLVM CamelCase and use llvm's ADT. Much more to come.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230042 91177308-0d34-0410-b5e6-96231b3b80d8
Summary: Turns out if you don't set CMAKE_BUILD_TYPE the default is an empty string. This results in some of the behaviors of debug builds, but not all of them. For example ENABLE_ASSERTIONS is false.
Reviewers: rnk
Reviewed By: rnk
Subscribers: chapuni, llvm-commits
Differential Revision: http://reviews.llvm.org/D7360
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230041 91177308-0d34-0410-b5e6-96231b3b80d8
Before calling Function::getGC to test for enablement, we need to make sure there's actually a GC at all via Function::hasGC. Otherwise, we'd crash on functions without a GC. Thankfully, this only mattered if you manually scheduled the pass, but still, oops. :(
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230040 91177308-0d34-0410-b5e6-96231b3b80d8
EmitFunctionStubs is called from doFinalization and so can't
depend on the Subtarget existing. It's also irrelevant as
we know we're darwin since we're in the darwin asm printer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230039 91177308-0d34-0410-b5e6-96231b3b80d8
This canonicalization step saves us 3 pattern matching possibilities * 4 math ops
for scalar FP math that uses xmm regs. The backend can re-commute the operands
post-instruction-selection if that makes register allocation better.
The tests in llvm/test/CodeGen/X86/sse-scalar-fp-arith.ll cover this scenario already,
so there are no new tests with this patch.
Differential Revision: http://reviews.llvm.org/D7777
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230024 91177308-0d34-0410-b5e6-96231b3b80d8
It would be nice to get rid of the version checks here, but that will
have to wait until libstdc++ is upgraded to 5.0 everywhere ...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230021 91177308-0d34-0410-b5e6-96231b3b80d8
