[Coverage] Support loading multiple binaries into a CoverageMapping

Add support for loading multiple coverage readers into a single
CoverageMapping instance. This should make it easier to prepare a

[Coverage] Support loading multiple binaries into a CoverageMapping

Add support for loading multiple coverage readers into a single
CoverageMapping instance. This should make it easier to prepare a
unified coverage report for multiple binaries.

Differential Revision: https://reviews.llvm.org/D25535

llvm-svn: 284251

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[Coverage] Factor out logic to create FunctionRecords (NFC)

llvm-svn: 284063

[Coverage] Mark a few more methods const (NFC)

llvm-svn: 275514

[Coverage] Mark a few methods const (NFC)

llvm-svn: 275337

Revert "[Coverage] Clarify ownership of a MemoryBuffer in the reader (NFC)"

This reverts commit 1037ef2574adde2103ad221d63834c3e1df4a776.

llvm-svn: 274105

[Coverage] Clarify ownership of a MemoryBuffer in the reader (NFC)

Pass a `MemoryBuffer &` to BinaryCoverageReader::create() instead of a
`std::unique_ptr<MemoryBuffer> &`. This makes it easier to r

[Coverage] Clarify ownership of a MemoryBuffer in the reader (NFC)

Pass a `MemoryBuffer &` to BinaryCoverageReader::create() instead of a
`std::unique_ptr<MemoryBuffer> &`. This makes it easier to reason about
the ownership of the buffer at a glance.

llvm-svn: 273326

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Add FIXMEs to all derived classes of std::error_category.

This helps make clear that we're moving away from std::error_code.

Differential Revision: http://reviews.llvm.org/D20592

llvm-svn: 270604

Retry^3 "[ProfileData] (llvm) Use Error in InstrProf and Coverage, NFC"

Transition InstrProf and Coverage over to the stricter Error/Expected
interface.

Changes since the initial commit:
- Fix erro

Retry^3 "[ProfileData] (llvm) Use Error in InstrProf and Coverage, NFC"

Transition InstrProf and Coverage over to the stricter Error/Expected
interface.

Changes since the initial commit:
- Fix error message printing in llvm-profdata.
- Check errors in loadTestingFormat() + annotateAllFunctions().
- Defer error handling in InstrProfIterator to InstrProfReader.
- Remove the base ProfError class to work around an MSVC ICE.

Differential Revision: http://reviews.llvm.org/D19901

llvm-svn: 270020

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Revert "Retry^2 "[ProfileData] (llvm) Use Error in InstrProf and Coverage, NFC""

This reverts commit r269694. MSVC says:

error C2086: 'char llvm::ProfErrorInfoBase<enum llvm::instrprof_error>::ID'

Revert "Retry^2 "[ProfileData] (llvm) Use Error in InstrProf and Coverage, NFC""

This reverts commit r269694. MSVC says:

error C2086: 'char llvm::ProfErrorInfoBase<enum llvm::instrprof_error>::ID' : redefinition

llvm-svn: 269700

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Retry^2 "[ProfileData] (llvm) Use Error in InstrProf and Coverage, NFC"

Transition InstrProf and Coverage over to the stricter Error/Expected
interface.

Changes since the initial commit:
- Address

Retry^2 "[ProfileData] (llvm) Use Error in InstrProf and Coverage, NFC"

Transition InstrProf and Coverage over to the stricter Error/Expected
interface.

Changes since the initial commit:
- Address undefined-var-template warning.
- Fix error message printing in llvm-profdata.
- Check errors in loadTestingFormat() + annotateAllFunctions().
- Defer error handling in InstrProfIterator to InstrProfReader.

Differential Revision: http://reviews.llvm.org/D19901

llvm-svn: 269694

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Revert "Retry "[ProfileData] (llvm) Use Error in InstrProf and Coverage, NFC""

This reverts commit r269491. It triggers warnings with Clang, breaking
builds for -Werror users including several build

Revert "Retry "[ProfileData] (llvm) Use Error in InstrProf and Coverage, NFC""

This reverts commit r269491. It triggers warnings with Clang, breaking
builds for -Werror users including several build bots.

llvm-svn: 269547

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Retry "[ProfileData] (llvm) Use Error in InstrProf and Coverage, NFC"

Transition InstrProf and Coverage over to the stricter Error/Expected
interface.

Changes since the initial commit:
- Fix error

Retry "[ProfileData] (llvm) Use Error in InstrProf and Coverage, NFC"

Transition InstrProf and Coverage over to the stricter Error/Expected
interface.

Changes since the initial commit:
- Fix error message printing in llvm-profdata.
- Check errors in loadTestingFormat() + annotateAllFunctions().
- Defer error handling in InstrProfIterator to InstrProfReader.

Differential Revision: http://reviews.llvm.org/D19901

llvm-svn: 269491

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Revert "(HEAD -> master, origin/master, origin/HEAD) [ProfileData] (llvm) Use Error in InstrProf and Coverage, NFC"

This reverts commit r269462. It fails two llvm-profdata tests.

llvm-svn: 269466

[ProfileData] (llvm) Use Error in InstrProf and Coverage, NFC

Transition InstrProf and Coverage over to the stricter Error/Expected
interface.

Differential Revision: http://reviews.llvm.org/D19901

[ProfileData] (llvm) Use Error in InstrProf and Coverage, NFC

Transition InstrProf and Coverage over to the stricter Error/Expected
interface.

Differential Revision: http://reviews.llvm.org/D19901

llvm-svn: 269462

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[Coverage] Combine counts of expansion regions if there are no code regions for the same area.

Differential Revision: http://reviews.llvm.org/D18831

llvm-svn: 268620

Move coverage related code into a separate library.

Differential Revision: http://reviews.llvm.org/D19333

llvm-svn: 268089