| author | VinÃcius Tinti <viniciustinti@gmail.com> | 2017-04-24 20:04:58 (GMT) |
|---|---|---|
| committer | Greg Hackmann <ghackmann@google.com> | 2017-10-16 22:30:37 (GMT) |
| commit | 30c02b6d50d7c1714a8df450f5eadf68a24a997a (patch) | |
| tree | a073113a431070dadd0eedd44f80460c01670b75 | |
| parent | 5db0ac53e751f236c065323c503445ce6c9a5177 (diff) | |
| download | common-30c02b6d50d7c1714a8df450f5eadf68a24a997a.zip common-30c02b6d50d7c1714a8df450f5eadf68a24a997a.tar.gz common-30c02b6d50d7c1714a8df450f5eadf68a24a997a.tar.bz2 | |
UPSTREAM: kbuild: Add support to generate LLVM assembly files
Add rules to kbuild in order to generate LLVM assembly files with the .ll
extension when using clang.
# from c code
make CC=clang kernel/pid.ll
Signed-off-by: VinÃcius Tinti <viniciustinti@gmail.com>
Signed-off-by: Behan Webster <behanw@converseincode.com>
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
(cherry picked from commit 433db3e260bc8134d4a46ddf20b3668937e12556)
| -rw-r--r-- | .gitignore | 1 | ||||
| -rw-r--r-- | Makefile | 5 | ||||
| -rw-r--r-- | scripts/Makefile.build | 8 |
3 files changed, 14 insertions, 0 deletions
@@ -33,6 +33,7 @@ *.lzo *.patch *.gcno +*.ll modules.builtin Module.symvers *.dwo @@ -1373,6 +1373,8 @@ help: @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)' @echo ' dir/ - Build all files in dir and below' @echo ' dir/file.[ois] - Build specified target only' + @echo ' dir/file.ll - Build the LLVM assembly file' + @echo ' (requires compiler support for LLVM assembly generation)' @echo ' dir/file.lst - Build specified mixed source/assembly target only' @echo ' (requires a recent binutils and recent build (System.map))' @echo ' dir/file.ko - Build module including final link' @@ -1557,6 +1559,7 @@ clean: $(clean-dirs) -o -name '*.symtypes' -o -name 'modules.order' \ -o -name modules.builtin -o -name '.tmp_*.o.*' \ -o -name '*.c.[012]*.*' \ + -o -name '*.ll' \ -o -name '*.gcno' \) -type f -print | xargs rm -f # Generate tags for editors @@ -1660,6 +1663,8 @@ endif $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) %.symtypes: %.c prepare scripts FORCE $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) +%.ll: %.c prepare scripts FORCE + $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) # Modules /: prepare scripts FORCE diff --git a/scripts/Makefile.build b/scripts/Makefile.build index 7675d11..3e3efd3 100644 --- a/scripts/Makefile.build +++ b/scripts/Makefile.build @@ -176,6 +176,14 @@ cmd_cc_symtypes_c = \ $(obj)/%.symtypes : $(src)/%.c FORCE $(call cmd,cc_symtypes_c) +# LLVM assembly +# Generate .ll files from .c +quiet_cmd_cc_ll_c = CC $(quiet_modtag) $@ + cmd_cc_ll_c = $(CC) $(c_flags) -emit-llvm -S -o $@ $< + +$(obj)/%.ll: $(src)/%.c FORCE + $(call if_changed_dep,cc_ll_c) + # C (.c) files # The C file is compiled and updated dependency information is generated. # (See cmd_cc_o_c + relevant part of rule_cc_o_c) |