getUserCost() currently returns TCC_Free for any extend of a compare (i1)
result. It seems this is only true in a limited number of cases where for
example two compares are chained. Even in those types of cases it seems
unlikely that they are generally free, while they may be in some cases.
This patch therefore removes this special handling of cast of i1. No tests
are failing because of this.
If some target want the old behavior, it could override getUserCost().
Review: Hal Finkel, Chandler Carruth, Evgeny Astigeevich, Simon Pilgrim,
Ulrich Weigand
https://reviews.llvm.org/D54742/new/
llvm-svn: 360970
This is outdated, there's a bunch of architectures missing. If we want
them to be part of this table they should be a separate row anyway.
llvm-svn: 360967
Previously "bt all " would've failed as the regex didn't match
them.
Over the shoulder review by Jonas Devlieghere.
<rdar://problem/50824935>
llvm-svn: 360966
Make sure to not unroll a vector division/remainder (with a constant splat
divisor) after type legalization, since the scalar type may then be illegal.
Review: Ulrich Weigand
https://reviews.llvm.org/D62036
llvm-svn: 360965
Summary:
Rather than duplicating code between PointerUnion, PointerUnion3, and
PointerUnion4 (and missing things from the latter cases, such as some of the
DenseMap support and operator==), convert PointerUnion to a variadic template
that can be used as a union of any number of pointers.
(This doesn't support PointerUnion<> right now. Adding a special case for that
would be possible, and perhaps even useful in some situations, but it doesn't
seem worthwhile until we have a concrete use case.)
Reviewers: dblaikie
Subscribers: dexonsmith, kristina, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D62027
llvm-svn: 360962
These are all of the ones involving the same data layout string. Remainder take a bit more consideration, but at least everything can be auto-updated now.
llvm-svn: 360961
These are valid Jcc, but aren't based on the EFLAGS condition codes (Intel 64
and IA-32 Architetcures Software Developer's Manual Vol. 1, Appendix B). These
are covered in clang/test, but not llvm/test.
llvm-svn: 360960
Summary:
Adds a call to __hwasan_handle_vfork(SP) at each landingpad entry.
Reusing __hwasan_handle_vfork instead of introducing a new runtime call
in order to be ABI-compatible with old runtime library.
Reviewers: pcc
Subscribers: kubamracek, hiraditya, #sanitizers, llvm-commits
Tags: #sanitizers, #llvm
Differential Revision: https://reviews.llvm.org/D61968
llvm-svn: 360959
The change broke some scenarios where debug information is still
needed, although MarkLive cannot see it, including the
Chromium/Android build. Reverting to unbreak that build.
llvm-svn: 360955
In Intel syntax, it's not uncommon to see a "short" modifier on Jcc conditional
jumps, which indicates the offset should be a "short jump" (8-bit immediate
offset from EIP, -128 to +127). This patch expands to all recognized Jcc
condition codes, and removes the inline restriction.
Clang already ignores "jmp short" in inline assembly. However, only "jmp" and a
couple of Jcc are actually checked, and only inline (i.e., not when using the
integrated assembler for asm sources). A quick search through asm-containing
libraries at hand shows a pretty broad range of Jcc conditions spelled with
"short."
GAS ignores the "short" modifier, and instead uses an encoding based on the
given immediate. MS inline seems to do the same, and I suspect MASM does, too.
NASM will yield an error if presented with an out-of-range immediate value.
Example of GCC 9.1 and MSVC v19.20, "jmp short" with offsets that do and do not
fit within 8 bits: https://gcc.godbolt.org/z/aFZmjY
Differential Revision: https://reviews.llvm.org/D61990
llvm-svn: 360954
This better matches the verbiage in Intel documentation, and should help avoid
confusion between these two different kinds of values, both of which are parsed
from mnemonics.
llvm-svn: 360953
Summary:
This refactors four pieces of code that create SDNodes for references to
symbols:
- normal global address lowering (LEA, MOV, etc)
- callee global address lowering (CALL)
- external symbol address lowering (LEA, MOV, etc)
- external symbol address lowering (CALL)
Each of these pieces of code need to:
- classify the reference
- lower the symbol
- emit a RIP wrapper if needed
- emit a load if needed
- add offsets if needed
I think handling them all in one place will make the code easier to
maintain in the future.
Reviewers: craig.topper, RKSimon
Subscribers: hiraditya, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D61690
llvm-svn: 360952
Summary:
This emits S_CONSTANT records for global variables.
Currently this emits records for the global variables already being tracked in the
LLVM IR metadata, which are just constant global variables; we'll also want S_CONSTANTs
for static data members and enums.
Related to https://bugs.llvm.org/show_bug.cgi?id=41615
Reviewers: rnk
Subscribers: aprantl, hiraditya, llvm-commits, thakis
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D61926
llvm-svn: 360948
Summary:
This patch adds a libClang_shared library on *nix systems which exports the entire C++ API. In order to support this on Windows we should really refactor llvm-shlib and share code between the two.
This also uses a slightly different method for generating the shared library, which I should back-port to llvm-shlib. Instead of linking the static archives and passing linker flags to force loading the whole libraries, this patch creates object libraries for every library (which has no cost in the build system), and link the object libraries.
Reviewers: tstellar, winksaville
Subscribers: mgorny, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D61909
llvm-svn: 360946
The recent introduction of v3i32 etc as an MVT, and its use in AMDGPU
3-dword memory instructions, caused a de-optimization problem for code
with such a load that then bitcasts via vector of i8, because v12i8 is
not an MVT so it legalizes the bitcast by widening it.
This commit adds the ability to widen a bitcast using extract_subvector
on the result, so the value does not need to go via memory.
Differential Revision: https://reviews.llvm.org/D60457
Change-Id: Ie4abb7760547e54a2445961992eafc78e80d4b64
llvm-svn: 360942
Previously these sections were being generated during their
constructors. This moves the work to finalizeContent, and also does
the same for the relocation sections because their contents depends
on the final layout too.
This change is part of a larger refactor to how we deal with synthetic
sections: https://reviews.llvm.org/D61811
Differential Revision: https://reviews.llvm.org/D61971
llvm-svn: 360941
This relands commit rL360833 which caused issues on Win32
bots due to path handling/normalization differences. Now
this uses `sys::path::filename` which should handle
additional edge cases on Win32.
Original commit:
"[Clang][PP] Add the __FILE_NAME__ builtin macro"
This patch adds the __FILE_NAME__ macro that expands to the
last component of the path, similar to __FILE__ except with
a guarantee that only the last path component (without the
separator) will be rendered.
I intend to follow through with discussion of this with WG14
as a potential inclusion in the C standard or failing that,
try to discuss this with GCC developers since this extension
is desired by GCC and Clang users/developers alike.
Differential Revision: https://reviews.llvm.org/D61756
llvm-svn: 360938
Summary:
This patch implements the source location builtins `__builtin_LINE(), `__builtin_FUNCTION()`, `__builtin_FILE()` and `__builtin_COLUMN()`. These builtins are needed to implement [`std::experimental::source_location`](https://rawgit.com/cplusplus/fundamentals-ts/v2/main.html#reflection.src_loc.creation).
With the exception of `__builtin_COLUMN`, GCC also implements these builtins, and Clangs behavior is intended to match as closely as possible.
Reviewers: rsmith, joerg, aaron.ballman, bogner, majnemer, shafik, martong
Reviewed By: rsmith
Subscribers: rnkovacs, loskutov, riccibruno, mgorny, kunitoki, alexr, majnemer, hfinkel, cfe-commits
Differential Revision: https://reviews.llvm.org/D37035
llvm-svn: 360937
This fixes an unintended regression introduced by
https://reviews.llvm.org/D61451 by making sure the Objective-C runtime
is also tried when the "correct" language runtime failed to return an
object description.
rdar://problem/50791055
Differential Revision: https://reviews.llvm.org/D62015
llvm-svn: 360929
These were new tests I added in r360808. I made a mistake while converting the exisiting binary FNeg test into the new unary FNeg tests. Correct that.
llvm-svn: 360928
SymbolStringPtr used to use nullptr as its empty value and (since it performed
ref-count operations on any non-nullptr) a pointer to a special pool-entry
instance as its tombstone.
This commit changes the scheme to use two invalid pointer values as the empty
and tombstone values, and broadens the ref-count guard to prevent ref-counting
operations from being performed on these pointers. This should improve the
performance of SymbolStringPtrs used in DenseMaps/DenseSets, as ref counting
operations will no longer be performed on the tombstone.
llvm-svn: 360925
Previously we were doing this so that the 256 bit selectw builtin could be used in the implementation of the 512->256 bit conversion intrinsic.
After this commit we now use a masked convert builtin that will emit the intrinsic call and the 256-bit select from custom code in CGBuiltin. Then the header only needs to call that one intrinsic.
llvm-svn: 360924
Summary:
Make it usable outside of ASTMatchFinder. This will make it possible to
use this enum to control whether certain implicit nodes are skipped
while AST dumping for example.
Reviewers: klimek, aaron.ballman
Subscribers: cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D61836
llvm-svn: 360920
Added synchronization for possible concurrent initialization of mutexes
by multiple threads. The need of synchronization caused by commit r357927
which added the use of mutexes at threads movement to/from common pool
(earlier the mutexes were used only at suspend/resume).
Patch by Johnny Peyton.
Differential Revision: https://reviews.llvm.org/D61995
llvm-svn: 360919
Jonas Devlieghere