This patch introduces a pass that uses the Attributor to deduce AMDGPU specific attributes.
Reviewed By: jdoerfert, arsenm
Differential Revision: https://reviews.llvm.org/D104997
* ELF supports `nodeduplicate`.
* ELF calls the concept "section group". `GRP_COMDAT` emulates the PE COMDAT deduplication feature.
* "COMDAT group" is an ELF term. Avoid it for PE/COFF.
* WebAssembly supports comdat but only supports the `any` selection kind. https://bugs.llvm.org/show_bug.cgi?id=50531
* A comdat must be included or omitted as a unit. Both the compiler and the linker must obey this rule.
* A global object can be a member of at most one comdat.
* COFF requires a non-local linkage for non-`nodeduplicate` selection kinds.
* llvm.global_ctors/.llvm.global_dtors: if the third field is used on ELF, it must reference a global variable or function in a comdat
Reviewed By: rnk
Differential Revision: https://reviews.llvm.org/D106300
checkForAllInstructions was not handling declarations correctly.
It should have been returning false when it gets called on a declaration
The patch also fixes a test case for AAFunctionReachability for it to be able
to pass after the changes to the checkForAllinstructions.
Differential Revision: https://reviews.llvm.org/D106625
This is referenced in several of the cmake files that are part of an llvm install and it is also useful by downstream components such as onnx-mlir.
Differential Revision: https://reviews.llvm.org/D106686
Eli pointed out the issue when reviewing D104140. The max trip count logic makes an assumption that the value of IV changes. When the step is zero, the nowrap fact becomes trivial, and thus there's nothing preventing the loop from being nearly infinite. (The "nearly" part is because mustprogress may disallow an infinite loop while still allowing 999999999 iterations before RHS happens to allow an exit.)
This is very difficult to see in practice. You need a means to produce a loop varying RHS in a mustprogress loop which doesn't allow the loop to be infinite. In most cases, LICM or SCEV are smart enough to remove the loop varying expressions.
Differential Revision: https://reviews.llvm.org/D106327
This was previously combining indices even though they operate on
different types. For non-opaque pointers, the condition is
automatically satisfied based on the pointer types being equal.
Replace the clang builtins and LLVM intrinsics for {f32x4,f64x2}.{pmin,pmax}
with standard codegen patterns. Since wasm_simd128.h uses an integer vector as
the standard single vector type, the IR for the pmin and pmax intrinsic
functions contains bitcasts that would not be there otherwise. Add extra codegen
patterns that can still select the pmin and pmax instructions in the presence of
these bitcasts.
Differential Revision: https://reviews.llvm.org/D106612
Otherwise e.g. the FoldTwoEntryPHINode() has to do a lot of legwork
to re-deduce what is the dominant block (i.e. for which block
is this branch the terminator).
The check for sinking instructions past the load + cmp sequence
currently checks for side-effects, which includes writing to memory
and unwinding. However, I don't believe we care about sinking the
instructions past an unwind (as they don't have any side-effects
themselves).
Differential Revision: https://reviews.llvm.org/D106591
This matches what MS rc.exe allows in practice. I'm not aware of
any legal syntax case that are broken by allowing dashes as part
of what the tokenizer considers an Identifier - but I'm not
very well versed in the RC syntax either, can @amccarth think of
any case that would be broken by this?
This fixes downstream bug
https://github.com/msys2/MINGW-packages/issues/9180.
Additionally, rc.exe allows such resource name strings to be surrounded
by quotes, ending up with e.g.
Resource name (string): "QUOTEDNAME"
(i.e., the quotes end up as part of the string), which llvm-rc doesn't
support yet either. (I'm not aware of such cases in the wild though,
but resource string names with dashes do exist.)
This also allows including files with unquoted paths, with filenames
containing dashes (which fixes
https://github.com/msys2/MINGW-packages/issues/9130, which has been
worked around differently so far).
Differential Revision: https://reviews.llvm.org/D106598
Avoid buffering just to copy the buffered data, in 'development
mode', when logging. Instead, just populate the underlying protobuf.
Differential Revision: https://reviews.llvm.org/D106592
Since we are using assumed information now, the logic should be refined to avoid
unncessary assertion.
Reviewed By: jdoerfert
Differential Revision: https://reviews.llvm.org/D106630
This patch adds a reduced test case which identifies an illegal vsetvli
inserted by the compiler. The compiler emits a vsetvli which is intended
to preserve VL with the SEW/LMUL ratio e32/m1 when in fact the VL could
have been set by e64/m2 in a predecessor block.
Differential Revision: https://reviews.llvm.org/D106286
Since we're changing VTYPE, we may change VLMAX which could
invalidate the previous VL. If we can't tell if it is safe we
should use an AVL of 1 instead of keeping the old VL.
This is a quick fix. We may want to thread VL to the pseudo
instruction instead of making up a value. That will require ISD
opcode changes and changes to the C intrinsic interface.
This fixes the issue raised in D106286.
Reviewed By: frasercrmck
Differential Revision: https://reviews.llvm.org/D106403
This code tries to form a TEST from CMP+AND with an optional
truncate in between. If we looked through the truncate, we may
have extra bits in the AND mask that shouldn't participate in
the checks. Normally SimplifyDemendedBits takes care of this, but
the AND may have another user. So manually mask out any extra bits.
Fixes PR51175.
Differential Revision: https://reviews.llvm.org/D106634
This patch is the initial support, it implements translation from object file to JIT link graph, and very few relocations were supported. Currently, the test file ELF_pc_indirect.s is passed, the HelloWorld program(compiled with mno-relax flag) can be linked correctly and run on instruction emulator correctly.
In the downstream implementation, I have implemented the GOT, PLT function, and EHFrame and some optimization will be implement soon. I will organize the code in to patches, then gradually send it to upstream.
Differential Revision: https://reviews.llvm.org/D105429
Most modern tools only accept two-dash long options. Remove one-dash
long options which are not recognized by GNU style `getopt_long`.
This ensures long options cannot collide with grouped short options.
Note: llvm-symbolizer has `-demangle={true,false}` for pprof compatibility
(for a while). They are kept.
Reviewed By: jhenderson
Differential Revision: https://reviews.llvm.org/D106377
By replacing a lambda expression with a functor class instance, this
patch works around an issue encountered on AIX where the IBM XL compiler
appears to make no progress for many hours.
Reviewed By: jsji
Differential Revision: https://reviews.llvm.org/D106554
This is not the transform direction we want in general,
but by the time we have a CMOV, we've already tried
everything else that could be better.
The transform increases the uses of the other add operand,
but that is safe according to Alive2:
https://alive2.llvm.org/ce/z/Yn6p-A
We could probably extend this to other binops (not just add).
This is the motivating pattern discussed in:
https://llvm.org/PR51069
The test with i8 shows a missed fold because there's a trunc
sitting in front of the add. That can be handled with a small
follow-up.
Differential Revision: https://reviews.llvm.org/D106607
This adds custom lowering for truncating stores when operating on
fixed length vectors in SVE. It also includes a DAG combine to
fold extends followed by truncating stores into non-truncating
stores in order to prevent this pattern appearing once truncating
stores are supported.
Currently truncating stores are not used in certain cases where
the size of the vector is larger than the target vector width.
Differential Revision: https://reviews.llvm.org/D104471
Deduplication in OpenMPOpt finds redundant OpenMP runtime calls and replaces them with a single call placed in the earliest safe location in the IR. When deduplication happens in a target region this patch makes sure replacement calls are put after target_init.
Reviewed By: jdoerfert
Differential Revision: https://reviews.llvm.org/D106556
This adds some missing single source shuffle costs for AArch64, of i16
and i8 vectors. v4i16 are the same as v4i32 with a worse case cost of 3
coming from the perfect shuffle tables. The larger vector sizes expand
into a constant pool, plus a load (and adrp) and a tbl. I arbitrarily
chose 8 for the cost to be expensive but not too expensive.
Differential Revision: https://reviews.llvm.org/D106241
Constfold constrained variants of operations fadd, fsub, fmul, fdiv,
frem, fma and fmuladd.
The change also sets up some means to support for removal of unused
constrained intrinsics. They are declared as accessing memory to model
interaction with floating point environment, so they were not removed,
as they have side effect. Now constrained intrinsics that have
"fpexcept.ignore" as exception behavior are removed if they have no uses.
As for intrinsics that have exception behavior other than "fpexcept.ignore",
they can be removed if it is known that they do not raise floating point
exceptions. It happens when doing constant folding, attributes of such
intrinsic are changed so that the intrinsic is not claimed as accessing
memory.
Differential Revision: https://reviews.llvm.org/D102673
