Disable MultiSource/UnitTests/C++11/frame_layout on SPARC

[ro]

Summary

frame_layout.cpp doesn't compile on SPARC (both Solaris/sparcv9 and Linux/sparc64):

FAILED: MultiSource/UnitTests/C++11/frame_layout/CMakeFiles/frame_layout.dir/frame_layout.cpp.o
[...]
fatal error: error in backend: Function "_Z10test_frameILj4096ELb1ELj2048ELb0ELb0EJEEvDpT4_jPKcP13trace_elementd": over-aligned dynamic alloca not supported.
void test_frame<4096u, true, 2048u, false, false>(, unsigned int, char const*, trace_element*, double)

Therefore, this patch disables the test on SPARC.

Tested on sparc64-unknown-linux-gnu (only 3 testsuite failures remaining) and sparcv9-sun-solaris2.11 (11 failures once a couple of Solaris-specific bugs are fixed).

[fhahn]

Sounds good to me, but could you file an issue for the failure?

[ro]

Sure, done: Issue #57626.

[fhahn]

LGTM, thanks!

Sure, done: Issue #57626.

Would be good to also link to the commit disabling support, so it will get re-enabled once the issue is fixed.

[ro]

In D133493#3777132, @fhahn wrote:

Would be good to also link to the commit disabling support, so it will get re-enabled once the issue is fixed.

That's difficult because changes are all over the place: the initial enabling landed with the Solaris sanitizer port (both sparc and x86), later parts of compiler-rt were enabled with sparc support disabled. Would take some time do dig up. I'll certainly revert those once someone implements the necessary support.

[MaskRay]

If you filed a bug for the issue, it might be good to refer to it in CMakeLists.txt:)

[ro]

In D133493#3777633, @MaskRay wrote:

If you filed a bug for the issue, it might be good to refer to it in CMakeLists.txt:)

True: that's what I did in the committed summary ;-) Just was too lazy to update the review first...

MultiSource/UnitTests/C++11/CMakeLists.txt

 list(APPEND CXXFLAGS -std=c++11)
 
-if(NOT MIPS_IS_MIPS16_ENABLED)
+if(NOT (MIPS_IS_MIPS16_ENABLED OR ARCH MATCHES "Sparc"))
   add_subdirectory(frame_layout)
 endif()