These said test_f32_olt_s for the type of an overloaded intrinsic.
But the parser doesn't use that part of the name and just uses
the types of the arguments.

This avoids new warnings due to D68912 adds -Wrange-loop-analysis to -Wall.

Differential Revision: https://reviews.llvm.org/D71815

This avoids new warnings due to D68912 adds -Wrange-loop-analysis to -Wall.

Differential Revision: https://reviews.llvm.org/D71814

This avoids new warnings due to D68912 adds -Wrange-loop-analysis to -Wall.

Also removed the top-level const as requested by Aaron Ballman in similar
patches.

Differential Revision: https://reviews.llvm.org/D71812

This avoids new warnings due to D68912 adds -Wrange-loop-analysis to -Wall.

Differential Revision: https://reviews.llvm.org/D71811

This avoids new warnings due to D68912 adds -Wrange-loop-analysis to -Wall.

Differential Revision: https://reviews.llvm.org/D71810

This avoids new warnings due to D68912 adds -Wrange-loop-analysis to -Wall.

Differential Revision: https://reviews.llvm.org/D71809

This avoids new warnings due to D68912 adds -Wrange-loop-analysis to -Wall.

Differential Revision: https://reviews.llvm.org/D71808

This avoids new warnings due to D68912 adds -Wrange-loop-analysis to -Wall.

Differential Revision: https://reviews.llvm.org/D71807

This is in the context of the automatic padding work for the jcc erratum mitigation.  These are example cases we need to *not* pad for correctness.  Exact mechanism to suppress is still TBD, but saving the tests which have come up.

This is another optimization suggested in PRPR44153:
https://bugs.llvm.org/show_bug.cgi?id=44153

Summary:
This is documented as the appropriate template modifier for call operands.
Fixes PR44272, and adds a regression test.

Also adds support for operand modifiers in Intel-style inline assembly.

Reviewers: rnk

Reviewed By: rnk

Subscribers: merge_guards_bot, hiraditya, cfe-commits, llvm-commits

Tags: #clang, #llvm

Differential Revision: https://reviews.llvm.org/D71677

This is another potential regression exposed by D63815.

Here we peek through a bitcast to find an extract subvector and
scale the splat offset based on that:
splat (bitcast (extract X, C)), LaneC --> duplane (bitcast X), LaneC'

Differential Revision: https://reviews.llvm.org/D71672

Implement the C++17 sequencing rules for the built-in operators <<, >>, .*,
 ->*, = and op=.

Differential Revision: https://reviews.llvm.org/D58297

Reviewed By: rsmith

The current handling of the operators ||, && and ?: has a number of false
positive and false negative. The issues for operator || and && are:

1. We need to add sequencing regions for the LHS and RHS as is done for the
   comma operator. Not doing so causes false positives in expressions like
   `((a++, false) || (a++, false))` (from PR39779, see PR22197 for another
    example).

2. In the current implementation when the evaluation of the LHS fails, the RHS
   is added to a worklist to be processed later. This results in false negatives
   in expressions like `(a && a++) + a`.

Fix these issues by introducing sequencing regions for the LHS and RHS, and by
not deferring the visitation of the RHS.

The issues with the ternary operator ?: are similar, with the added twist that
we should not warn on expressions like `(x ? y += 1 : y += 2)` since exactly
one of the 2nd and 3rd expression is going to be evaluated, but we should still
warn on expressions like `(x ? y += 1 : y += 2) = y`.

Differential Revision: https://reviews.llvm.org/D57747

Reviewed By: rsmith

NFCs factored out of the following patches:
- Change all of the `Expr *` to `const Expr *` in SequenceChecker for
  const-correctness. SequenceChecker should not modify AST nodes.
- Add some comments.
- clang-format

Differential Revision: https://reviews.llvm.org/D57659

Reviewed By: xbolva00

Added support for constraint satisfaction checking and partial ordering of constraints in constrained partial specialization and function template overloads.
Re-commit after fixing some crashes and warnings.

Differential Revision: https://reviews.llvm.org/D41910

Previously, SWIG was only a hard dependency if python bindings were
enabled.

Since bf03e17c, scripts/CMakeLists.txt
is included unconditionally, while that file adds the hard dependency
on SWIG.

Instead, only include that file if either python or lua bindings are
enabled.

gcc/config/{i386,s390} support -mnop-mcount. We currently only support
-mnop-mcount for SystemZ. The function attribute "mnop-mcount" is
ignored on other targets.

gcc/config/{i386,s390} support -mfentry. We currently only support
-mfentry for X86 and SystemZ. TargetOpcode::FENTRY_CALL is not handled
on other targets.

  % clang -target aarch64 -pg -mfentry a.c -c
  fatal error: error in backend: Not supported instr: <MCInst 21>

-mfentry, -mrecord-mcount, and -mnop-mcount were invented for Linux
ftrace. Linux uses $(call cc-option-yn,-mrecord-mcount) to detect if the
specific feature is available. Reject unsupported features so that Linux
build system will not wrongly consider them available and cause
build/runtime failures.

Note, GCC has stricter checks that we do not implement, e.g. -fpic/-fpie
-fnop-mcount is not allowed on x86, -fpic/-fpie -mfentry is not allowed
on x86-32.

GCC's x86 and s390 ports support -mrecord-mcount. Other ports reject the
option.

  aarch64-linux-gnu-gcc: error: unrecognized command line option ‘-mrecord-mcount’

Allowing this option can cause failures when building Linux kernel for
aarch64, powerpc64, etc, which will think the feature is available if
the clang command returns 0.

Fix the nonsensical error messages for when breakpoint and watchpoint
callbacks are not supported.

This ensures that watchpoint command honors the scripting language
passed with `-s`. Currently the argument ignores the actual language and
only uses it to differentiate between lldb and script commands.

 - Fix enum entry order.
 - Fix missing enum case in CommandObjectBreakpointCommand.
 - Add Lua entry to swtich in LanguageToString and simplify the code.

When a function is used as a breakpoint command, use to the debugger's
default scripting language, unless a language is explicitly specified.

This now defines HAVE_VCS_VERSION_INC for all files in Basic,
but now the BUILD.gn file has only a single "sources" field again,
and the automerger requires that. Having the automerger work for
clang/lib/Basic is a very nice to have, and the downside seems tiny.

getLastArgIntValue is a useful utility function to get command line argument as an integer.
Currently it is in Frontend so that it can only be used by clang -cc1. Move it to basic so
that it can also be used by clang driver.

Differential Revision: https://reviews.llvm.org/D71080

This ensures that breakpoint command honors the scripting language
passed with `-s`. Currently the argument ignores the actual language and
only uses it to differentiate between lldb and script commands.

Fixes a bogus enum value for the scripting language options, adds an
entry for Lua and refactored the code to use an exhaustive switch.

Rather than holding on to one script interpreter, it should be possible
to request a script interpreter for a specific scripting language. The
GetScriptInterpreter method now takes an optional scripting language
argument.

(NFC)

Don't create a new lua state on every operation. Share a single state
across the lifetime of the script interpreter. Add simple locking to
prevent two threads from modifying the state concurrently.

ClangASTContext::getASTContext() currently returns a ptr but we have an assert there since a
while that the ASTContext is not a nullptr. This causes that we still have a lot of code
that is doing nullptr checks on the result of getASTContext() which is all unreachable code.

This patch changes the return value to a reference to make it clear this can't be a nullptr
and deletes all the nullptr checks.

This patch uses SWIG to generate the Lua bindings for the SB API. It
covers most of the API, but some methods require a type map similar to
Python.

Discussion on the mailing list:
http://lists.llvm.org/pipermail/lldb-dev/2019-December/015812.html

Differential revision: https://reviews.llvm.org/D71235

Makes sure that the script works fine both in python2 and python3.

Patch by Pavel Samolysov!

Differential Revision: https://reviews.llvm.org/D71746