feat: fork callgrind as tracegrind (mechanical rename)

Pure copy of callgrind/ to tracegrind/ with symbol prefix rename
CLG_ → TG_ (expanding to vgTracegrind_), header guards updated,
public header renamed to tracegrind.h with TRACEGRIND_* macros.
No behavioral changes — output is still identical to callgrind.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: art049

Makefile.am

@@ -9,6 +9,7 @@ TOOLS = \
 		memcheck \
 		cachegrind \
 		callgrind \
+		tracegrind \
 		helgrind \
 		drd \
 		massif \

configure.ac

@@ -5807,6 +5807,8 @@ AC_CONFIG_FILES([
    callgrind/callgrind_annotate
    callgrind/callgrind_control
    callgrind/tests/Makefile
+   tracegrind/Makefile
+   tracegrind/tests/Makefile
    helgrind/Makefile
    helgrind/tests/Makefile
    drd/Makefile

tracegrind/Makefile.am

@@ -0,0 +1,82 @@
+include $(top_srcdir)/Makefile.tool.am
+
+EXTRA_DIST =
+
+#----------------------------------------------------------------------------
+# Headers, etc
+#----------------------------------------------------------------------------
+
+pkginclude_HEADERS = tracegrind.h
+
+noinst_HEADERS = \
+	costs.h \
+	events.h \
+	global.h
+
+#----------------------------------------------------------------------------
+# tracegrind-<platform>
+#----------------------------------------------------------------------------
+
+noinst_PROGRAMS  = tracegrind-@VGCONF_ARCH_PRI@-@VGCONF_OS@
+if VGCONF_HAVE_PLATFORM_SEC
+noinst_PROGRAMS += tracegrind-@VGCONF_ARCH_SEC@-@VGCONF_OS@
+endif
+
+TRACEGRIND_SOURCES_COMMON = \
+	bb.c \
+	bbcc.c \
+	callstack.c \
+	clo.c \
+	context.c \
+	costs.c \
+	debug.c \
+	dump.c \
+	events.c \
+	fn.c \
+	jumps.c \
+	main.c \
+	sim.c \
+	threads.c
+
+# We sneakily include "cg_branchpred.c" and "cg_arch.c" from cachegrind
+TRACEGRIND_CFLAGS_COMMON = -I$(top_srcdir)/cachegrind
+
+tracegrind_@VGCONF_ARCH_PRI@_@VGCONF_OS@_SOURCES      = \
+	$(TRACEGRIND_SOURCES_COMMON)
+tracegrind_@VGCONF_ARCH_PRI@_@VGCONF_OS@_CPPFLAGS     = \
+	$(AM_CPPFLAGS_@VGCONF_PLATFORM_PRI_CAPS@)
+tracegrind_@VGCONF_ARCH_PRI@_@VGCONF_OS@_CFLAGS       = $(LTO_CFLAGS) \
+	$(AM_CFLAGS_@VGCONF_PLATFORM_PRI_CAPS@) $(TRACEGRIND_CFLAGS_COMMON)
+tracegrind_@VGCONF_ARCH_PRI@_@VGCONF_OS@_DEPENDENCIES = \
+	$(TOOL_DEPENDENCIES_@VGCONF_PLATFORM_PRI_CAPS@)
+tracegrind_@VGCONF_ARCH_PRI@_@VGCONF_OS@_LDADD        = \
+	$(TOOL_LDADD_@VGCONF_PLATFORM_PRI_CAPS@)
+tracegrind_@VGCONF_ARCH_PRI@_@VGCONF_OS@_LDFLAGS      = \
+	$(TOOL_LDFLAGS_@VGCONF_PLATFORM_PRI_CAPS@)
+tracegrind_@VGCONF_ARCH_PRI@_@VGCONF_OS@_LINK = \
+	$(top_builddir)/coregrind/link_tool_exe_@VGCONF_OS@ \
+	@VALT_LOAD_ADDRESS_PRI@ \
+	$(LINK) \
+	$(tracegrind_@VGCONF_ARCH_PRI@_@VGCONF_OS@_CFLAGS) \
+	$(tracegrind_@VGCONF_ARCH_PRI@_@VGCONF_OS@_LDFLAGS)
+
+if VGCONF_HAVE_PLATFORM_SEC
+tracegrind_@VGCONF_ARCH_SEC@_@VGCONF_OS@_SOURCES      = \
+	$(TRACEGRIND_SOURCES_COMMON)
+tracegrind_@VGCONF_ARCH_SEC@_@VGCONF_OS@_CPPFLAGS     = \
+	$(AM_CPPFLAGS_@VGCONF_PLATFORM_SEC_CAPS@)
+tracegrind_@VGCONF_ARCH_SEC@_@VGCONF_OS@_CFLAGS       = $(LTO_CFLAGS) \
+	$(AM_CFLAGS_@VGCONF_PLATFORM_SEC_CAPS@) $(TRACEGRIND_CFLAGS_COMMON)
+tracegrind_@VGCONF_ARCH_SEC@_@VGCONF_OS@_DEPENDENCIES = \
+	$(TOOL_DEPENDENCIES_@VGCONF_PLATFORM_SEC_CAPS@)
+tracegrind_@VGCONF_ARCH_SEC@_@VGCONF_OS@_LDADD        = \
+	$(TOOL_LDADD_@VGCONF_PLATFORM_SEC_CAPS@)
+tracegrind_@VGCONF_ARCH_SEC@_@VGCONF_OS@_LDFLAGS      = \
+	$(TOOL_LDFLAGS_@VGCONF_PLATFORM_SEC_CAPS@)
+tracegrind_@VGCONF_ARCH_SEC@_@VGCONF_OS@_LINK = \
+	$(top_builddir)/coregrind/link_tool_exe_@VGCONF_OS@ \
+	@VALT_LOAD_ADDRESS_SEC@ \
+	$(LINK) \
+	$(tracegrind_@VGCONF_ARCH_SEC@_@VGCONF_OS@_CFLAGS) \
+	$(tracegrind_@VGCONF_ARCH_SEC@_@VGCONF_OS@_LDFLAGS)
+endif