[Sanitizers] Disable armv7* sanitizers slice for ios

[usama54321]

Summary

Disable arvm7* sanitizer slice for ios as part of an effort to reduce toolchain size

rdar://104059106

[rsundahl]

LGTM (see note)

compiler-rt/cmake/Modules/CompilerRTDarwinUtils.cmake

155

This looks good to me provided you are intentionally very narrowly targeting ios only.

[usama54321]

compiler-rt/cmake/Modules/CompilerRTDarwinUtils.cmake

155

Yes that is intended

[thetruestblue]

You could probably use FILTER to remove all arm7* variants in one command, but there's no real need to do that.

LGTM

[usama54321]

use filter instead of remove

compiler-rt/cmake/Modules/CompilerRTDarwinUtils.cmake

if(${os} MATCHES "^(iossim|tvossim|watchossim)$")
     list(REMOVE_ITEM archs "x86_64h")
   endif()
 
   if(${os} MATCHES "iossim")
     message(STATUS "Disabling i386 slice for iossim")
     list(REMOVE_ITEM archs "i386")
   endif()
 
+  if(${os} MATCHES "^ios$")
+    message(STATUS "Disabling sanitizers armv7* slice for ios")
+    list(FILTER archs EXCLUDE REGEX "armv7.*")
+  endif()
+
   set(working_archs)
   foreach(arch ${archs})
    
     set(arch_linker_flags "-arch ${arch} ${os_linker_flags}")
     if(TEST_COMPILE_ONLY)
       # `-w` is used to surpress compiler warnings which `try_compile_only()` treats as an error.
       try_compile_only(CAN_TARGET_${os}_${arch} FLAGS -v -arch ${arch} ${DARWIN_${os}_CFLAGS} -w)
     else()
       set(SAVED_CMAKE_EXE_LINKER_FLAGS ${CMAKE_EXE_LINKER_FLAGS})