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[lldb] Remove a redundant semicolon. NFC.

This fixes the following warning, repeated multiple times:

    llvm-project/lldb/include/lldb/Host/windows/PseudoConsole.h:69:2: warning: extra ';' outside of a function is incompatible with C++98 [-Wc++98-compat-extra-semi]
       69 | }; // namespace lldb_private
          |  ^

[lldb] Fix compilation for 32 bit platforms

This fixes the following error on 32 bit platforms, if compiling with Clang:

    llvm-project/lldb/source/Utility/VirtualDataExtractor.cpp:211:55: error: non-constant-expression cannot be narrowed from type 'SizeType' (aka 'unsigned long long') to 'size_t' (aka 'unsigned int') in initializer list [-Wc++11-narrowing]
      211 |   return {m_start + static_cast<size_t>(entry->data), entry->size};
          |                                                       ^~~~~~~~~~~
    llvm-project/lldb/source/Utility/VirtualDataExtractor.cpp:211:55: note: insert an explicit cast to silence this issue
      211 |   return {m_start + static_cast<size_t>(entry->data), entry->size};
          |                                                       ^~~~~~~~~~~
          |                                                       static_cast<size_t>( )

propagate flags into fma queries

Add comment

fix too conservative

ValueTracking: Improve nan tracking for fma square special case

In the square multiply case, we can infer if the add of opposite
sign infinities can occur.

Fix comment

update tests

Address comment nan lhs

frem self

InstCombine: Handle fdiv in SimplifyDemandedFPClass

DAG: Use correct shift type for big endian store forwarding case

Theoretically the shift amount type could differ, it just happens
none of the big endian targets do this.

InstCombine: Fold known-qnan results to a literal nan (#176123)

Previously we only considered fcNan to fold to qnan for canonicalizing
results, ignoring the simpler case where we know the nan is already
quiet.

ValueTracking: Improve handling for fma/fmuladd (#175614)

The handling for fma was very basic and only handled the
repeated input case. Re-use the fmul and fadd handling for more
accurate sign bit and nan handling.

[test][NFC] Add more keys to test SDKSettings files (#177749)

Additional visionOS changes.

regenerate new tests

InstCombine: Use SimplifyDemandedFPClass epilog helper function for fma

NFC refactor to use shared code for fold to constant or set fast math
flags.

InstCombine: Infer fast math flags for sqrt

Add comment

propagate flags into fma queries

InstCombine: Implement SimplifyDemandedFPClass for fma

This can't do much filtering on the sources, except for nans.
We can also attempt to introduce ninf/nnan.

fix too conservative

InstCombine: Add baseline fma tests for SimplifyDemandedFPClass

ValueTracking: Improve nan tracking for fma square special case

In the square multiply case, we can infer if the add of opposite
sign infinities can occur.

regenerate tests

Check IsCanonicalizing

Move isAggregateType, although this can't break for any existing case

ValueTracking: Improve handling for fma/fmuladd

The handling for fma was very basic and only handled the
repeated input case. Re-use the fmul and fadd handling for more
accurate sign bit and nan handling.

InstCombine: Fold known-qnan results to a literal nan

Previously we only considered fcNan to fold to qnan for canonicalizing
results, ignoring the simpler case where we know the nan is already
quiet.

ValueTracking: Detect cases with no underflow for fadd (#177746)

In the case where both operands have the same sign,
as long as one of the operands is normal or infinity,
the result cannot underflow to a zero.

Pre-committing for #175614