X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=Makefile.in;h=0a64fc10e5b053f9ea265033a5157e57179cf46e;hb=b467efaa91d270f8d057bbae9ab915d068a90ec4;hp=a52ff56e5c5fd97f9ca05e58338cc29075baa4f3;hpb=50ad1254d5030d0804cbf89c758359ae202e8d55;p=binutils-gdb.git

diff --git a/Makefile.in b/Makefile.in
index a52ff56e5c5..0a64fc10e5b 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -412,6 +412,49 @@ CXXFLAGS = @CXXFLAGS@
 LIBCXXFLAGS = $(CXXFLAGS) -fno-implicit-templates
 GOCFLAGS = $(CFLAGS)
 
+# Pass additional PGO and LTO compiler options to the PGO build.
+BUILD_CFLAGS = $(PGO_BUILD_CFLAGS) $(PGO_BUILD_LTO_CFLAGS)
+override CFLAGS += $(BUILD_CFLAGS)
+override CXXFLAGS += $(BUILD_CFLAGS)
+
+# Additional PGO and LTO compiler options to generate profiling data
+# for the PGO build.
+PGO_BUILD_GEN_FLAGS_TO_PASS = \
+	PGO_BUILD_CFLAGS="@PGO_BUILD_GEN_CFLAGS@" \
+	PGO_BUILD_LTO_CFLAGS="@PGO_BUILD_LTO_CFLAGS@"
+
+# NB: Filter out any compiler options which may fail PGO training runs.
+PGO_BUILD_TRAINING_CFLAGS:= \
+	$(filter-out -Werror=%,$(CFLAGS))
+PGO_BUILD_TRAINING_CXXFLAGS:=\
+	$(filter-out -Werror=%,$(CXXFLAGS))
+PGO_BUILD_TRAINING_CFLAGS:= \
+	$(filter-out -Wall,$(PGO_BUILD_TRAINING_CFLAGS))
+PGO_BUILD_TRAINING_CXXFLAGS:= \
+	$(filter-out -Wall,$(PGO_BUILD_TRAINING_CXXFLAGS))
+PGO_BUILD_TRAINING_CFLAGS:= \
+	$(filter-out -specs=%,$(PGO_BUILD_TRAINING_CFLAGS))
+PGO_BUILD_TRAINING_CXXFLAGS:= \
+	$(filter-out -specs=%,$(PGO_BUILD_TRAINING_CXXFLAGS))
+PGO_BUILD_TRAINING_FLAGS_TO_PASS = \
+	PGO_BUILD_TRAINING=yes \
+	CFLAGS_FOR_TARGET="$(PGO_BUILD_TRAINING_CFLAGS)" \
+	CXXFLAGS_FOR_TARGET="$(PGO_BUILD_TRAINING_CXXFLAGS)"
+
+# Ignore "make check" errors in PGO training runs.
+PGO_BUILD_TRAINING_MFLAGS = -i
+
+# Additional PGO and LTO compiler options to use profiling data for the
+# PGO build.
+PGO_BUILD_USE_FLAGS_TO_PASS = \
+	PGO_BUILD_CFLAGS="@PGO_BUILD_USE_CFLAGS@" \
+	PGO_BUILD_LTO_CFLAGS="@PGO_BUILD_LTO_CFLAGS@"
+
+# PGO training targets for the PGO build.  FIXME: Add gold tests to
+# training.
+PGO-TRAINING-TARGETS = binutils gas gdb ld sim
+PGO_BUILD_TRAINING = $(addprefix maybe-check-,$(PGO-TRAINING-TARGETS))
+
 CREATE_GCOV = create_gcov
 
 TFLAGS =
@@ -985,6 +1028,12 @@ configure-target:  \
 
 # The target built for a native non-bootstrap build.
 .PHONY: all
+
+# --enable-pgo-build enables the PGO build.
+# 1. First build with -fprofile-generate.
+# 2. Use "make maybe-check-*" to generate profiling data.
+# 3. Use "make clean" to remove the previous build.
+# 4. Rebuild with -fprofile-use.
 all:
 @if gcc-bootstrap
 	[ -f stage_final ] || echo stage3 > stage_final
@@ -993,7 +1042,7 @@ all:
 	$(MAKE) $(RECURSE_FLAGS_TO_PASS) `cat stage_final`-bubble
 @endif gcc-bootstrap
 	@: $(MAKE); $(unstage)
-	@r=`${PWD_COMMAND}`; export r; \
+	+@r=`${PWD_COMMAND}`; export r; \
 	s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
 @if gcc-bootstrap
 	if [ -f stage_last ]; then \
@@ -1001,7 +1050,17 @@ all:
 	  $(MAKE) $(TARGET_FLAGS_TO_PASS) all-host all-target; \
 	else \
 @endif gcc-bootstrap
-	  $(MAKE) $(RECURSE_FLAGS_TO_PASS) all-host all-target \
+	  $(MAKE) $(RECURSE_FLAGS_TO_PASS) \
+		$(PGO_BUILD_GEN_FLAGS_TO_PASS) all-host all-target \
+@if pgo-build
+	&& $(MAKE) $(RECURSE_FLAGS_TO_PASS) \
+		$(PGO_BUILD_TRAINING_MFLAGS) \
+		$(PGO_BUILD_TRAINING_FLAGS_TO_PASS) \
+		$(PGO_BUILD_TRAINING) \
+	&& $(MAKE) $(RECURSE_FLAGS_TO_PASS) clean \
+	&& $(MAKE) $(RECURSE_FLAGS_TO_PASS) \
+		$(PGO_BUILD_USE_FLAGS_TO_PASS) all-host all-target \
+@endif pgo-build
 @if gcc-bootstrap
 	    ; \
 	fi \
@@ -52111,6 +52170,7 @@ all-stage3-ld: maybe-all-stage3-libctf
 all-stage4-ld: maybe-all-stage4-libctf
 all-stageprofile-ld: maybe-all-stageprofile-libctf
 all-stagefeedback-ld: maybe-all-stagefeedback-libctf
+install-ld: maybe-install-libctf
 install-binutils: maybe-install-opcodes
 install-strip-binutils: maybe-install-strip-opcodes
 install-opcodes: maybe-install-bfd