Makefile.in (RUN_GEN, [...]): New variables.

	* Makefile.in (RUN_GEN, VALGRIND_DRIVER_DEFINES): New variables.
	(DRIVER_DEFINES): Add $(VALGRIND_DRIVER_DEFINES).
	(executing gencheck, genconfigs, genconditions, genflags,
	gencodes, genconstants, genemit, genrecog, genopinit, genextract,
	genpeep, genattr, genattrtab, genoutput, gengenrtl, genpreds,
	gengtype, genprotos): Prepend $(RUN_GEN).
	* configure.in: Move host compiler tests before --enable-checking
	tests.
	(--enable-checking=valgrind): New.
	* config.in, configure: Regenerate.
	* cppfiles.c [!ENABLE_VALGRIND_CHECKING] (VALGRIND_DISCARD):
	Define as empty.
	(read_include_file): When doing the mmap+1 trick,
	valgrind-annotate the byte after the mmap:ed area as readable.
	(purge_cache): Remove above annotation.
	* gcc.c (execute) [ENABLE_VALGRIND_CHECKING]: Arrange to prepend
	VALGRIND_PATH -q to each command.

From-SVN: r59309

1 files changed, 27 insertions, 0 deletions

diff --git a/gcc/gcc.c b/gcc/gcc.c
index 56cb08f..c30851d 100644
--- a/gcc/gcc.c
+++ b/gcc/gcc.c
@@ -2877,6 +2877,33 @@ execute ()
 #endif /* DEBUG */
     }
 
+#ifdef ENABLE_VALGRIND_CHECKING
+  /* Run the each command through valgrind.  To simplifiy prepending the
+     path to valgrind and the option "-q" (for quiet operation unless
+     something triggers), we allocate a separate argv array.  */
+
+  for (i = 0; i < n_commands; i++)
+    {
+      const char **argv;
+      int argc;
+      int j;
+
+      for (argc = 0; commands[i].argv[argc] != NULL; argc++)
+	;
+
+      argv = alloca ((argc + 3) * sizeof (char *));
+
+      argv[0] = VALGRIND_PATH;
+      argv[1] = "-q";
+      for (j = 2; j < argc + 2; j++)
+	argv[j] = commands[i].argv[j - 2];
+      argv[j] = NULL;
+
+      commands[i].argv = argv;
+      commands[i].prog = argv[0];
+    }
+#endif
+
   /* Run each piped subprocess.  */
 
   for (i = 0; i < n_commands; i++)