Fix autoprofiledbootstrap build

1. Fix gcov version
2. Merge perf data collected when compiling the compiler and runtime libraries
3. Fix documentation typo

Tested on x86_64-pc-linux-gnu.

ChangeLog:

	* Makefile.in: Define PROFILE_MERGER
	* Makefile.tpl: Define PROFILE_MERGER

gcc/c/ChangeLog:

	* Make-lang.in: Merge perf data collected when compiling cc1 and runtime libraries

gcc/cp/ChangeLog:

	* Make-lang.in: Merge perf data collected when compiling cc1plus and runtime libraries

gcc/lto/ChangeLog:

	* Make-lang.in: Merge perf data collected when compiling lto1 and runtime libraries

gcc/ChangeLog:

	* doc/install.texi: Fix documentation typo

Makefile.in

@@ -491,6 +491,7 @@ PGO-TRAINING-TARGETS = binutils gas gdb ld sim
 PGO_BUILD_TRAINING = $(addprefix maybe-check-,$(PGO-TRAINING-TARGETS))
 
 CREATE_GCOV = create_gcov
+PROFILE_MERGER = profile_merger
 
 TFLAGS =
 
@@ -971,7 +972,8 @@ EXTRA_HOST_FLAGS = \
 	'STRIP=$(STRIP)' \
 	'WINDRES=$(WINDRES)' \
 	'WINDMC=$(WINDMC)' \
-	'CREATE_GCOV=$(CREATE_GCOV)'
+	'CREATE_GCOV=$(CREATE_GCOV)' \
+	'PROFILE_MERGER=$(PROFILE_MERGER)'
 
 FLAGS_TO_PASS = $(BASE_FLAGS_TO_PASS) $(EXTRA_HOST_FLAGS)
 

Makefile.tpl

@@ -494,6 +494,7 @@ PGO-TRAINING-TARGETS = binutils gas gdb ld sim
 PGO_BUILD_TRAINING = $(addprefix maybe-check-,$(PGO-TRAINING-TARGETS))
 
 CREATE_GCOV = create_gcov
+PROFILE_MERGER = profile_merger
 
 TFLAGS =
 
@@ -728,7 +729,8 @@ EXTRA_HOST_FLAGS = \
 	'STRIP=$(STRIP)' \
 	'WINDRES=$(WINDRES)' \
 	'WINDMC=$(WINDMC)' \
-	'CREATE_GCOV=$(CREATE_GCOV)'
+	'CREATE_GCOV=$(CREATE_GCOV)' \
+	'PROFILE_MERGER=$(PROFILE_MERGER)'
 
 FLAGS_TO_PASS = $(BASE_FLAGS_TO_PASS) $(EXTRA_HOST_FLAGS)
 

gcc/c/Make-lang.in

@@ -88,9 +88,34 @@ cc1$(exeext): $(C_OBJS) cc1-checksum.o $(BACKEND) $(LIBDEPS)
 	  cc1-checksum.o $(BACKEND) $(LIBS) $(BACKENDLIBS)
 	@$(call LINK_PROGRESS,$(INDEX.c),end)
 
-cc1.fda: ../stage1-gcc/cc1$(exeext) ../prev-gcc/$(PERF_DATA)
+components_in_prev = "bfd opcodes binutils fixincludes gas gcc gmp mpfr mpc isl gold intl ld libbacktrace libcpp libcody libdecnumber libiberty libiberty-linker-plugin libiconv zlib lto-plugin libctf libsframe"
-	$(CREATE_GCOV) -binary ../stage1-gcc/cc1$(exeext) -gcov cc1.fda -profile ../prev-gcc/$(PERF_DATA) -gcov_version 1
+components_in_prev_target = "libstdc++-v3 libsanitizer libvtv libgcc libbacktrace libphobos zlib libgomp libatomic"
 
+.PHONY: create_fdas_for_cc1
+
+cc1.fda: create_fdas_for_cc1
+	$(PROFILE_MERGER) $(shell ls -ha cc1_*.fda) --output_file cc1.fda -gcov_version 2
+
+create_fdas_for_cc1: ../stage1-gcc/cc1$(exeext) ../prev-gcc/$(PERF_DATA)
+	for component_in_prev in "$(components_in_prev)"; do \
+	  perf_path=../prev-$$component_in_prev/$(PERF_DATA); \
+	  echo "Perf path:"; \
+	  echo $$perf_path; \
+	  if [ -f $$perf_path ]; then \
+	    profile_name=cc1_$$component_in_prev.fda; \
+	    $(CREATE_GCOV) -binary ../stage1-gcc/cc1$(exeext) -gcov $$profile_name -profile $$perf_path -gcov_version 2; \
+	  fi; \
+	done;
+
+	for component_in_prev_target in "$(components_in_prev_target)"; do \
+	  perf_path=../prev-$(TARGET_SUBDIR)/$$component_in_prev_target/$(PERF_DATA); \
+	  echo "Perf path:"; \
+	  echo $$perf_path; \
+	  if [ -f $$perf_path ]; then \
+	    profile_name=cc1_$$component_in_prev_target.fda; \
+	    $(CREATE_GCOV) -binary ../stage1-gcc/cc1$(exeext) -gcov $$profile_name -profile $$perf_path -gcov_version 2; \
+	  fi; \
+	done;
 #
 # Build hooks:
 
@@ -181,6 +206,7 @@ c.mostlyclean:
 	-rm -f c/*$(objext)
 	-rm -f c/*$(coverageexts)
 	-rm -f cc1.fda
+	-rm -f cc1_*.fda
 c.clean:
 c.distclean:
 	-rm -f c/config.status c/Makefile

gcc/cp/Make-lang.in

@@ -186,9 +186,34 @@ endif
 # This is the file that depends on the generated header file.
 cp/name-lookup.o: $(srcdir)/cp/std-name-hint.h
 
-cc1plus.fda: ../stage1-gcc/cc1plus$(exeext) ../prev-gcc/$(PERF_DATA)
+components_in_prev = "bfd opcodes binutils fixincludes gas gcc gmp mpfr mpc isl gold intl ld libbacktrace libcpp libcody libdecnumber libiberty libiberty-linker-plugin libiconv zlib lto-plugin libctf libsframe"
-	$(CREATE_GCOV) -binary ../stage1-gcc/cc1plus$(exeext) -gcov cc1plus.fda -profile ../prev-gcc/$(PERF_DATA) -gcov_version 1
+components_in_prev_target = "libstdc++-v3 libsanitizer libvtv libgcc libbacktrace libphobos zlib libgomp libatomic"
 
+.PHONY: create_fdas_for_cc1plus
+
+cc1plus.fda: create_fdas_for_cc1plus
+	$(PROFILE_MERGER) $(shell ls -ha cc1plus_*.fda) --output_file cc1plus.fda -gcov_version 2
+
+create_fdas_for_cc1plus: ../stage1-gcc/cc1plus$(exeext) ../prev-gcc/$(PERF_DATA)
+	for component_in_prev in "$(components_in_prev)"; do \
+	  perf_path=../prev-$$component_in_prev/$(PERF_DATA); \
+	  echo "Perf path:"; \
+	  echo $$perf_path; \
+	  if [ -f $$perf_path ]; then \
+	    profile_name=cc1plus_$$component_in_prev.fda; \
+	    $(CREATE_GCOV) -binary ../stage1-gcc/cc1plus$(exeext) -gcov $$profile_name -profile $$perf_path -gcov_version 2; \
+	  fi; \
+	done;
+
+	for component_in_prev_target in "$(components_in_prev_target)"; do \
+	  perf_path=../prev-$(TARGET_SUBDIR)/$$component_in_prev_target/$(PERF_DATA); \
+	  echo "Perf path:"; \
+	  echo $$perf_path; \
+	  if [ -f $$perf_path ]; then \
+	    profile_name=cc1plus_$$component_in_prev_target.fda; \
+	    $(CREATE_GCOV) -binary ../stage1-gcc/cc1plus$(exeext) -gcov $$profile_name -profile $$perf_path -gcov_version 2; \
+	  fi; \
+	done;
 #
 # Build hooks:
 
@@ -335,7 +360,7 @@ c++.mostlyclean:
 	-rm -f doc/g++.1
 	-rm -f cp/*$(objext)
 	-rm -f cp/*$(coverageexts)
-	-rm -f xg++$(exeext) g++-cross$(exeext) cc1plus$(exeext) cc1plus.fda
+	-rm -f xg++$(exeext) g++-cross$(exeext) cc1plus$(exeext) cc1plus*.fda
 c++.clean:
 c++.distclean:
 	-rm -f cp/config.status cp/Makefile

gcc/doc/install.texi

@@ -3119,7 +3119,7 @@ It is recommended to only use GCC for this.
 
 On Linux/x86_64 hosts with some restrictions (no virtualization) it is
 also possible to do autofdo build with @samp{make
-autoprofiledback}. This uses Linux perf to sample branches in the
+autoprofiledbootstrap}. This uses Linux perf to sample branches in the
 binary and then rebuild it with feedback derived from the profile.
 Linux perf and the @code{autofdo} toolkit needs to be installed for
 this.

gcc/lto/Make-lang.in

@@ -74,7 +74,7 @@ lto.srcinfo:
 lto.install-plugin:
 
 lto.mostlyclean:
-	rm -f $(LTO_OBJS) $(LTO_EXE) lto1.fda $(LTO_DUMP_OBJS) $(LTO_DUMP_EXE) lto-dump.fda
+	rm -f $(LTO_OBJS) $(LTO_EXE) lto1*.fda $(LTO_DUMP_OBJS) $(LTO_DUMP_EXE) lto-dump.fda
 
 lto.clean:
 lto.distclean:
@@ -105,8 +105,34 @@ $(LTO_DUMP_EXE): $(LTO_DUMP_OBJS) $(BACKEND) $(LIBDEPS) $(lto2.prev)
 
 lto/lto-dump.o: $(LTO_OBJS)
 
-lto1.fda: ../prev-gcc/lto1$(exeext) ../prev-gcc/$(PERF_DATA)
+components_in_prev = "bfd opcodes binutils fixincludes gas gcc gmp mpfr mpc isl gold intl ld libbacktrace libcpp libcody libdecnumber libiberty libiberty-linker-plugin libiconv zlib lto-plugin libctf libsframe"
-	$(CREATE_GCOV) -binary ../prev-gcc/lto1$(exeext) -gcov lto1.fda -profile ../prev-gcc/$(PERF_DATA) -gcov_version 1
+components_in_prev_target = "libstdc++-v3 libsanitizer libvtv libgcc libbacktrace libphobos zlib libgomp libatomic"
+
+.PHONY: create_fdas_for_lto1
+
+lto1.fda: create_fdas_for_lto1
+	$(PROFILE_MERGER) $(shell ls -ha lto1_*.fda) --output_file lto1.fda -gcov_version 2
+
+create_fdas_for_lto1: ../stage1-gcc/lto1$(exeext) ../prev-gcc/$(PERF_DATA)
+	for component_in_prev in "$(components_in_prev)"; do \
+	  perf_path=../prev-$$component_in_prev/$(PERF_DATA); \
+	  echo "Perf path:"; \
+	  echo $$perf_path; \
+	  if [ -f $$perf_path ]; then \
+	    profile_name=lto1_$$component_in_prev.fda; \
+	    $(CREATE_GCOV) -binary ../stage1-gcc/lto1$(exeext) -gcov $$profile_name -profile $$perf_path -gcov_version 2; \
+	  fi; \
+	done;
+
+	for component_in_prev_target in "$(components_in_prev_target)"; do \
+	  perf_path=../prev-$(TARGET_SUBDIR)/$$component_in_prev_target/$(PERF_DATA); \
+	  echo "Perf path:"; \
+	  echo $$perf_path; \
+	  if [ -f $$perf_path ]; then \
+	    profile_name=lto1_$$component_in_prev_target.fda; \
+	    $(CREATE_GCOV) -binary ../stage1-gcc/lto1$(exeext) -gcov $$profile_name -profile $$perf_path -gcov_version 2; \
+	  fi; \
+	done;
 
 # LTO testing is done as part of C/C++/Fortran etc. testing.
 check-lto: