[libc][NFC] Remove all trailing spaces from libc (#82831)

Summary:
There are a lot of random training spaces on various lines. This patch
just got rid of all of them with `sed 's/\ \+$//g'.

Author: jhuber6

libc/AOR_v20.02/string/arm/memchr.S

@@ -49,7 +49,7 @@ __memchr_arm:
 	and	r1,r1,#0xff	@ Don't think we can trust the caller to actually pass a char
 
 	cmp	r2,#16		@ If it's short don't bother with anything clever
-	blt	20f 
+	blt	20f
 
 	tst	r0, #7		@ If it's already aligned skip the next bit
 	beq	10f
@@ -62,7 +62,7 @@ __memchr_arm:
 	beq	50f		@ If it matches exit found
 	tst	r0, #7
 	bne	5b		@ If not aligned yet then do next byte
-	
+
 10:
 	@ At this point, we are aligned, we know we have at least 8 bytes to work with
 	push	{r4,r5,r6,r7}
@@ -71,7 +71,7 @@ __memchr_arm:
 	bic	r4, r2, #7	@ Number of double words to work with
 	mvns	r7, #0		@ all F's
 	movs	r3, #0
-	
+
 15:
 	ldmia	r0!,{r5,r6}
 	subs	r4, r4, #8
@@ -87,7 +87,7 @@ __memchr_arm:
 	pop	{r4,r5,r6,r7}
 	and	r1,r1,#0xff	@ Get r1 back to a single character from the expansion above
 	and	r2,r2,#7	@ Leave the count remaining as the number after the double words have been done
- 
+
 20:
 	cbz	r2, 40f		@ 0 length or hit the end already then not found
 

libc/CMakeLists.txt

@@ -162,7 +162,7 @@ elseif(LIBC_CMAKE_VERBOSE_LOGGING)
   message(STATUS "Path for config files is: ${LIBC_CONFIG_PATH}")
 endif()
 
-# option(LIBC_ENABLE_WIDE_CHARACTERS 
+# option(LIBC_ENABLE_WIDE_CHARACTERS
 # "Whether to enable wide character functions on supported platforms. This may
 # also set flags to enable or disable wide character support within other
 # functions (e.g. printf)." ON)

libc/benchmarks/automemcpy/README.md

@@ -17,7 +17,7 @@ git clone https://github.com/Z3Prover/z3.git
 python scripts/mk_make.py --prefix=<Z3_INSTALL_DIR>
 cd build
 make -j
-make install 
+make install
 ```
 
 ## Configuration
@@ -68,7 +68,7 @@ Make sure to save the results of the benchmark as a json file.
      By default, each function is benchmarked for at least one second, here we lower it to 200ms.
 
  - `--benchmark_filter="BM_Memset|BM_Bzero"`
- 
+
      By default, all functions are benchmarked, here we restrict them to `memset` and `bzero`.
 
 Other options might be useful, use `--help` for more information.

libc/cmake/modules/CheckCompilerFeatures.cmake

@@ -57,7 +57,7 @@ foreach(feature IN LISTS ALL_COMPILER_FEATURES)
     if(${feature} STREQUAL "float128")
       set(LIBC_COMPILER_HAS_FLOAT128 TRUE)
     elseif(${feature} STREQUAL "fixed_point")
-      set(LIBC_COMPILER_HAS_FIXED_POINT TRUE)      
+      set(LIBC_COMPILER_HAS_FIXED_POINT TRUE)
     endif()
   endif()
 endforeach()

libc/cmake/modules/LLVMLibCCompileOptionRules.cmake

@@ -6,7 +6,7 @@ function(_get_compile_options_from_flags output_var)
   endif()
   check_flag(ADD_SSE4_2_FLAG ${ROUND_OPT_FLAG} ${flags})
   check_flag(ADD_EXPLICIT_SIMD_OPT_FLAG ${EXPLICIT_SIMD_OPT_FLAG} ${flags})
-  
+
   if(LLVM_COMPILER_IS_GCC_COMPATIBLE)
     if(ADD_FMA_FLAG)
       if(LIBC_TARGET_ARCHITECTURE_IS_X86)

libc/cmake/modules/LLVMLibCLibraryRules.cmake

@@ -125,7 +125,7 @@ function(add_gpu_entrypoint_library target_name base_target_name)
       OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/binary/${name}.gpubin"
       COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_CURRENT_BINARY_DIR}/binary
       COMMAND ${LIBC_CLANG_OFFLOAD_PACKAGER}
-              "${prefix},file=$<JOIN:${object},,file=>" -o 
+              "${prefix},file=$<JOIN:${object},,file=>" -o
               ${CMAKE_CURRENT_BINARY_DIR}/binary/${name}.gpubin
       DEPENDS ${dep} ${base_target_name}
       COMMENT "Packaging LLVM offloading binary for '${object}'"
@@ -142,7 +142,7 @@ function(add_gpu_entrypoint_library target_name base_target_name)
       COMMAND ${CMAKE_COMMAND} -E touch ${CMAKE_CURRENT_BINARY_DIR}/stubs/${name}.cpp
       DEPENDS ${dep} ${dep}.__gpubin__ ${base_target_name}
     )
-    add_custom_target(${dep}.__stub__ 
+    add_custom_target(${dep}.__stub__
                       DEPENDS ${dep}.__gpubin__ "${CMAKE_CURRENT_BINARY_DIR}/stubs/${name}.cpp")
 
     add_library(${dep}.__fatbin__
@@ -151,9 +151,9 @@ function(add_gpu_entrypoint_library target_name base_target_name)
     )
 
     # This is always compiled for the LLVM host triple instead of the native GPU
-    # triple that is used by default in the build. 
+    # triple that is used by default in the build.
     target_compile_options(${dep}.__fatbin__ BEFORE PRIVATE -nostdlib)
-    target_compile_options(${dep}.__fatbin__ PRIVATE 
+    target_compile_options(${dep}.__fatbin__ PRIVATE
       --target=${LLVM_HOST_TRIPLE}
       "SHELL:-Xclang -fembed-offload-object=${CMAKE_CURRENT_BINARY_DIR}/binary/${name}.gpubin")
     add_dependencies(${dep}.__fatbin__

libc/cmake/modules/LLVMLibCObjectRules.cmake

@@ -284,7 +284,7 @@ function(create_entrypoint_object fq_target_name)
 
   # The NVPTX target cannot use LTO for the internal targets used for testing.
   if(LIBC_TARGET_ARCHITECTURE_IS_NVPTX)
-    target_compile_options(${internal_target_name} PRIVATE 
+    target_compile_options(${internal_target_name} PRIVATE
                            -fno-lto -march=${LIBC_GPU_TARGET_ARCHITECTURE})
   endif()
 

libc/cmake/modules/LLVMLibCTestRules.cmake

@@ -318,8 +318,8 @@ function(add_libc_fuzzer target_name)
   target_include_directories(${fq_target_name} SYSTEM PRIVATE ${LIBC_INCLUDE_DIR})
   target_include_directories(${fq_target_name} PRIVATE ${LIBC_SOURCE_DIR})
 
-  target_link_libraries(${fq_target_name} PRIVATE 
-    ${link_object_files} 
+  target_link_libraries(${fq_target_name} PRIVATE
+    ${link_object_files}
     ${LIBC_FUZZER_LINK_LIBRARIES}
   )
 
@@ -352,7 +352,7 @@ endif()
 # system libc are linked in to the final executable. The final exe is fully
 # statically linked. The libc that the final exe links to consists of only
 # the object files of the DEPENDS targets.
-# 
+#
 # Usage:
 #   add_integration_test(
 #     <target name>
@@ -462,15 +462,15 @@ function(add_integration_test test_name)
   target_compile_options(${fq_build_target_name} PRIVATE ${compile_options})
 
   if(LIBC_TARGET_ARCHITECTURE_IS_AMDGPU)
-    target_link_options(${fq_build_target_name} PRIVATE 
+    target_link_options(${fq_build_target_name} PRIVATE
       ${LIBC_COMPILE_OPTIONS_DEFAULT}
       -mcpu=${LIBC_GPU_TARGET_ARCHITECTURE} -flto
       "-Wl,-mllvm,-amdgpu-lower-global-ctor-dtor=0" -nostdlib -static
       "-Wl,-mllvm,-amdhsa-code-object-version=${LIBC_GPU_CODE_OBJECT_VERSION}")
   elseif(LIBC_TARGET_ARCHITECTURE_IS_NVPTX)
     # We need to use the internal object versions for NVPTX.
     set(internal_suffix ".__internal__")
-    target_link_options(${fq_build_target_name} PRIVATE 
+    target_link_options(${fq_build_target_name} PRIVATE
       ${LIBC_COMPILE_OPTIONS_DEFAULT}
       "-Wl,--suppress-stack-size-warning"
       -march=${LIBC_GPU_TARGET_ARCHITECTURE} -nostdlib -static
@@ -645,15 +645,15 @@ function(add_libc_hermetic_test test_name)
   endforeach()
 
   if(LIBC_TARGET_ARCHITECTURE_IS_AMDGPU)
-    target_link_options(${fq_build_target_name} PRIVATE 
+    target_link_options(${fq_build_target_name} PRIVATE
       ${LIBC_COMPILE_OPTIONS_DEFAULT}
       -mcpu=${LIBC_GPU_TARGET_ARCHITECTURE} -flto
       "-Wl,-mllvm,-amdgpu-lower-global-ctor-dtor=0" -nostdlib -static
       "-Wl,-mllvm,-amdhsa-code-object-version=${LIBC_GPU_CODE_OBJECT_VERSION}")
   elseif(LIBC_TARGET_ARCHITECTURE_IS_NVPTX)
     # We need to use the internal object versions for NVPTX.
     set(internal_suffix ".__internal__")
-    target_link_options(${fq_build_target_name} PRIVATE 
+    target_link_options(${fq_build_target_name} PRIVATE
       ${LIBC_COMPILE_OPTIONS_DEFAULT}
       "-Wl,--suppress-stack-size-warning"
       -march=${LIBC_GPU_TARGET_ARCHITECTURE} -nostdlib -static

libc/config/darwin/x86_64/entrypoints.txt

@@ -16,7 +16,7 @@ set(TARGET_LIBC_ENTRYPOINTS
     libc.src.ctype.toascii
     libc.src.ctype.tolower
     libc.src.ctype.toupper
-    
+
     # string.h entrypoints
     libc.src.string.bcmp
     libc.src.string.bzero

libc/config/linux/x86_64/exclude.txt

@@ -9,12 +9,12 @@ try_compile(
 )
 
 if(NOT has_sys_random)
-  list(APPEND TARGET_LLVMLIBC_REMOVED_ENTRYPOINTS 
+  list(APPEND TARGET_LLVMLIBC_REMOVED_ENTRYPOINTS
     libc.src.sys.stat.stat
   )
   # If we're doing a fullbuild we provide the random header ourselves.
   if(NOT LLVM_LIBC_FULL_BUILD)
-    list(APPEND TARGET_LLVMLIBC_REMOVED_ENTRYPOINTS 
+    list(APPEND TARGET_LLVMLIBC_REMOVED_ENTRYPOINTS
       libc.src.sys.random.getrandom
     )
   endif()