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benchmark: Build drivers with N_AST symtab entries (for debugging) (#30777)

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On Darwin, we pass the *.swiftmodule paths transitively referenced by
the driver executable to ld64. ld64 inserts N_AST references to these
modules into the program, for later use by lldb.

This change should let us exercise much more lldb functionality via
`stepper` testing.
This commit is contained in:
Vedant Kumar
2020-04-02 16:12:05 -07:00
committed by GitHub
parent a87369b53c
commit 829f2588b3
1 changed files with 18 additions and 3 deletions
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21
benchmark/cmake/modules/AddSwiftBenchmarkSuite.cmake
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@@ -166,7 +166,7 @@ macro(configure_sdks)
endif()
endmacro()
function (add_swift_benchmark_library objfile_out sibfile_out)
function (add_swift_benchmark_library objfile_out sibfile_out swiftmodule_out)
cmake_parse_arguments(BENCHLIB "" "MODULE_PATH;SOURCE_DIR;OBJECT_DIR" "SOURCES;LIBRARY_FLAGS;DEPENDS" ${ARGN})
precondition(BENCHLIB_MODULE_PATH)
@@ -197,6 +197,7 @@ function (add_swift_benchmark_library objfile_out sibfile_out)
"-o" "${objfile}"
${sources})
set(${objfile_out} "${objfile}" PARENT_SCOPE)
set(${swiftmodule_out} "${swiftmodule}" PARENT_SCOPE)
if(SWIFT_BENCHMARK_EMIT_SIB)
precondition(sibfile_out)
@@ -401,12 +402,13 @@ function (swift_benchmark_compile_archopts)
endif()
set(bench_library_objects)
set(bench_library_sibfiles)
set(bench_library_swiftmodules)
set(opt_view_dirs)
# Build libraries used by the driver and benchmarks.
foreach(module_name_path ${BENCH_LIBRARY_MODULES})
set(sources "${srcdir}/${module_name_path}.swift")
add_swift_benchmark_library(objfile_out sibfile_out
add_swift_benchmark_library(objfile_out sibfile_out swiftmodule_out
MODULE_PATH "${module_name_path}"
SOURCE_DIR "${srcdir}"
OBJECT_DIR "${objdir}"
@@ -414,6 +416,7 @@ function (swift_benchmark_compile_archopts)
LIBRARY_FLAGS ${common_swift4_options})
precondition(objfile_out)
list(APPEND bench_library_objects "${objfile_out}")
list(APPEND bench_library_swiftmodules "${swiftmodule_out}")
if (SWIFT_BENCHMARK_EMIT_SIB)
precondition(sibfile_out)
list(APPEND bench_library_sibfiles "${sibfile_out}")
@@ -433,7 +436,7 @@ function (swift_benchmark_compile_archopts)
set(objfile_out)
set(sibfile_out)
add_swift_benchmark_library(objfile_out sibfile_out
add_swift_benchmark_library(objfile_out sibfile_out swiftmodule_out
MODULE_PATH "${module_name_path}"
SOURCE_DIR "${srcdir}"
OBJECT_DIR "${objdir}"
@@ -442,6 +445,7 @@ function (swift_benchmark_compile_archopts)
DEPENDS ${bench_library_objects})
precondition(objfile_out)
list(APPEND bench_driver_objects "${objfile_out}")
list(APPEND bench_library_swiftmodules "${swiftmodule_out}")
if (SWIFT_BENCHMARK_EMIT_SIB)
precondition(sibfile_out)
list(APPEND bench_driver_sibfiles "${sibfile_out}")
@@ -464,6 +468,7 @@ function (swift_benchmark_compile_archopts)
set(swiftmodule "${objdir}/${module_name}.swiftmodule")
set(source "${srcdir}/${module_name_path}.swift")
list(APPEND SWIFT_BENCH_OBJFILES "${objfile}")
list(APPEND bench_library_swiftmodules "${swiftmodule}")
if ("${bench_flags}" MATCHES "-whole-module.*")
set(output_option "-o" "${objfile}")
@@ -622,6 +627,15 @@ function (swift_benchmark_compile_archopts)
else()
set(SWIFT_LINK_RPATH "${SWIFT_RPATH_BASE}/${BENCH_COMPILE_ARCHOPTS_PLATFORM}")
endif()
# On Darwin, we pass the *.swiftmodule paths transitively referenced by the
# driver executable to ld64. ld64 inserts N_AST references to these modules
# into the program, for later use by lldb.
set(ld64_add_ast_path_opts)
foreach(ast_path ${bench_library_swiftmodules})
list(APPEND ld64_add_ast_path_opts "-Wl,-add_ast_path,${ast_path}")
endforeach()
add_custom_command(
OUTPUT "${OUTPUT_EXEC}"
DEPENDS
@@ -647,6 +661,7 @@ function (swift_benchmark_compile_archopts)
"-Xlinker" "${SWIFT_LINK_RPATH}"
${bench_library_objects}
${bench_driver_objects}
${ld64_add_ast_path_opts}
${SWIFT_BENCH_OBJFILES}
${objcfile}
"-o" "${OUTPUT_EXEC}"