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[cmake] Make SwiftCompilerSources support debug info in RelWithDebInfoMode and use -Os instead of -O with MinSizeRel. #84516

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Merged
merged 1 commit into from
Sep 25, 2025
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[cmake] Make SwiftCompilerSources support debug info in RelWithDebInfoMode and use -Os instead of -O with MinSizeRel. #84516

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17 changes: 14 additions & 3 deletions SwiftCompilerSources/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,8 @@
# See http://swift.org/LICENSE.txt for license information
# See http://swift.org/CONTRIBUTORS.txt for Swift project authors

include(SwiftUtils)

# Following function are needed as a workaround until it's possible to compile
# swift code with cmake's builtin swift support.

Expand Down Expand Up @@ -121,10 +123,19 @@ function(add_swift_compiler_modules_library name)
list(APPEND swift_compile_options "-Xfrontend" "-cxx-interop-use-opaque-pointer-for-moveonly")
endif()

if(CMAKE_BUILD_TYPE STREQUAL "Debug")
is_build_type_with_debuginfo("${CMAKE_BUILD_TYPE}" debug)
if (debug)
list(APPEND swift_compile_options "-g")
else()
list(APPEND swift_compile_options "-O" "-cross-module-optimization")
endif()

is_build_type_optimized("${CMAKE_BUILD_TYPE}" optimized)
if (optimized)
if("${CMAKE_BUILD_TYPE}" STREQUAL "MinSizeRel")
list(APPEND swift_compile_options "-Osize")
else()
list(APPEND swift_compile_options "-O")
endif()
list(APPEND swift_compile_options "-cross-module-optimization")
endif()

if(LLVM_ENABLE_ASSERTIONS)
Expand Down