Test C++ out-of-line operator functions

[MForster]

Add a test to verify that C++ out-of-line operator functions are imported correctly.

This is part of addressing SR-12748.

[MForster]

@swift-ci Please test

[gribozavr]

Could you add SILGen and IRGen tests for just one of the operators?

[MForster]

Could you add SILGen and IRGen tests for just one of the operators?

Done.

[MForster]

@swift-ci Please test

[gribozavr]

@swift-ci Please test

[gribozavr]

@swift-ci Please test Windows

[gribozavr]

@swift-ci Please test

[gribozavr]

@MForster Please update the tests to pass with MSVC mangled names on Windows.

[MForster]

@swift-ci Please test

[swift-ci]

Build failed
Swift Test OS X Platform
Git Sha - 176d7c4

[swift-ci]

Build failed
Swift Test Linux Platform
Git Sha - 6c5da9e

[MForster]

@swift-ci Please test Windows Platform

[aschwaighofer]

@MForster Hi Michael, the test:

Interop/Cxx/operators/non-member-out-of-line-irgen.swift

fails on armv7 on this bot https://ci.swift.org/job/oss-swift_tools-RA_stdlib-DA_test-device-non_executable/104

[MForster]

Sorry for the breakage. Reverting.

[aschwaighofer]

The output on armv7 is

  %12 = call i32 @_Zpl6IntBoxS_([1 x i32] %6, [1 x i32] %10)

arm64 (coercion to i64 happens before that):

  %12 = call i64 @_Zpl6IntBoxS_(i64 %6, i64 %10)

The quickest way to run these tests on different architectures if you have access to a mac OS X machine is to invoke the build script with --ios --watchos --reconfigure and invoke lit directly:

.../llvm-project/llvm/utils/lit/lit.py -sv --param swift_test_mode=only_non_executable ./build-master/swift-macosx-x86_64/test-iphoneos-armv7/Interop/Cxx/operators/non-member-out-of-line-irgen.swift
.../llvm-project/llvm/utils/lit/lit.py -sv --param swift_test_mode=only_non_executable ./build-master/swift-macosx-x86_64/test-iphoneos-arm64/Interop/Cxx/operators/non-member-out-of-line-irgen.swift
.../llvm-project/llvm/utils/lit/lit.py -sv --param swift_test_mode=only_non_executable ./build-master/swift-macosx-x86_64/test-watchos-armv7k/Interop/Cxx/operators/non-member-out-of-line-irgen.swift

[MForster]

Thanks, Arnold. This is very helpful. I was able to fix armv7 before I saw your reply, but arm64 would have been another roundtrip!