EntryExitInstrumenter: skip available_externally linkage

gnu::always_inline functions, which lower to available_externally, may
not have definitions external to the module. -finstrument-function
fam

EntryExitInstrumenter: skip available_externally linkage

gnu::always_inline functions, which lower to available_externally, may
not have definitions external to the module. -finstrument-function
family options instrumentating the function (which takes the function
address) may lead to a linker error if the function is not optimized
out, e.g.

```
// -std=c++17 or above with libstdc++
#include <string>
std::string str;
int main() {}
```

Simplified reproduce:
```
template <typename T>
struct A {
[[gnu::always_inline]] T bar(T a) { return a * 2; }
};
extern template class A<int>;
int main(int argc, char **argv) {
return A<int>().bar(argc);
}
```

GCC's -finstrument-function instrumentation skips such functions
(https://gcc.gnu.org/PR78333). Let's skip such functions
(available_externally) as well.

Fix #50742

Pull Request: https://github.com/llvm/llvm-project/pull/121452

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[test][EntryExitInstrumenter] Update/add tests

Use UTC. Add test coverage for AIX.

EntryExitInstrumenter: skip naked functions

The asm in a naked function may reasonably expect the argument registers and the
return address register (if present) to be live.

When using -pg and -fin

EntryExitInstrumenter: skip naked functions

The asm in a naked function may reasonably expect the argument registers and the
return address register (if present) to be live.

When using -pg and -finstrument-functions, functions are instrumented by adding
a function call to `_mcount/__cyg_profile_func_enter/__cyg_profile_func_enter_bare`/etc,
which will clobber these registers. If the return address register is clobbered,
the function will be unable to return to the caller, possibly causing an
infinite loop.

```
__attribute__((naked)) void g() {
#if defined(__arm__)
__asm__("bx lr");
#else
__asm__("ret");
#endif
}

int main() { g(); }
```

It seems that the only one reasonable way to handle the combination is to
disable instrumenting for naked functions.

GCC PR: https://gcc.gnu.org/PR109707
Close https://github.com/llvm/llvm-project/issues/62504

Reviewed By: hans

Differential Revision: https://reviews.llvm.org/D149721

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[EntryExitInstrumenter] Convert test to opaque pointers (NFC)

[NewPM] Use parameterized syntax for a couple of more passes

A couple of passes that are parameterized in new-PM used different
pass names (in cmd line interface) while using the same pass class
nam

[NewPM] Use parameterized syntax for a couple of more passes

A couple of passes that are parameterized in new-PM used different
pass names (in cmd line interface) while using the same pass class
name. This patch updates the PassRegistry to model pass parameters
more properly using PASS_WITH_PARAMS.

Reason for the change is to ensure that we have a 1-1 mapping
between class name and pass name (when disregarding the params).
With a 1-1 mapping it is more obvious which pass name to use in
options such as -debug-only, -print-after etc.

The opt -passes syntax is changed for the following passes:
early-cse-memssa => early-cse<memssa>
post-inline-ee-instrument => ee-instrument<post-inline>
loop-extract-single => loop-extract<single>
lower-matrix-intrinsics-minimal => lower-matrix-intrinsics<minimal>

This patch is not updating pass names in docs/Passes.rst. Not quite
sure what the status is for that document (e.g. when it comes to
listing pass paramters). It is only loop-extract-single that is
mentioned in Passes.rst today, out of the passes mentioned above.

Differential Revision: https://reviews.llvm.org/D108362

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Re-land "[PowerPC] Remove QPX/A2Q BGQ/BGP CNK support"

This reverts commit bf544fa1c3cb80f24d85e84559fb11193846259f.

Fixed the typo in PPCInstrInfo.cpp.

Revert "[PowerPC] Remove QPX/A2Q BGQ/BGP CNK support"

This reverts commit adffce71538e219aab4eeb024819baa7687262ff.

This is breaking test-suite, revert while investigation.

[PowerPC] Remove QPX/A2Q BGQ/BGP CNK support

Per RFC http://lists.llvm.org/pipermail/llvm-dev/2020-April/141295.html
no one is making use of QPX/A2Q/BGQ/BGP CNK anymore.

This patch remove the suppo

[PowerPC] Remove QPX/A2Q BGQ/BGP CNK support

Per RFC http://lists.llvm.org/pipermail/llvm-dev/2020-April/141295.html
no one is making use of QPX/A2Q/BGQ/BGP CNK anymore.

This patch remove the support of QPX/A2Q in llvm, BGQ/BGP in clang,
CNK support in openmp/polly.

Reviewed By: hfinkel

Differential Revision: https://reviews.llvm.org/D83915

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[llvm] Fix missing FileCheck directive colons

https://reviews.llvm.org/D77352

Reland "[ARM] push LR before __gnu_mcount_nc"

This relands r369147 with fixes to unit tests.

https://reviews.llvm.org/D65019

llvm-svn: 369173

Revert "Temporarily Revert "Add basic loop fusion pass.""

The reversion apparently deleted the test/Transforms directory.

Will be re-reverting again.

llvm-svn: 358552

EntryExitInstrumenter: Handle musttail calls

Inserting instrumentation between a musttail call and ret instruction
would create invalid IR. Instead, treat musttail calls as function
exits.

llvm-svn

EntryExitInstrumenter: Handle musttail calls

Inserting instrumentation between a musttail call and ret instruction
would create invalid IR. Instead, treat musttail calls as function
exits.

llvm-svn: 329385

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Rename test/Transforms/CountingFunctionInserter -> EntryExitInstrumenter

The pass was renamed in r318195.

llvm-svn: 318784