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re PR target/80210 (ICE in in extract_insn, at recog.c:2311 on ppc64 for with __builtin_pow)

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gcc/
	PR target/80210
	* config/rs6000/rs6000.c (rs6000_activate_target_options): New function.
	(rs6000_set_current_function): Rewrite function to use it.

gcc/testsuite/
	PR target/80210
	* gcc.target/powerpc/pr80210.c: New test.

From-SVN: r251190
This commit is contained in:
Peter Bergner 2017-08-18 18:41:41 -05:00 committed by Peter Bergner
parent b66d36128f
commit b1eb28d140
4 changed files with 75 additions and 45 deletions
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6
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
2017-08-18 Peter Bergner <bergner@vnet.ibm.com>
PR target/80210
* config/rs6000/rs6000.c (rs6000_activate_target_options): New function.
(rs6000_set_current_function): Rewrite function to use it.
2017-08-18 H.J. Lu <hongjiu.lu@intel.com>
PR c/53037

99
gcc/config/rs6000/rs6000.c
View File

@ -36664,23 +36664,30 @@ rs6000_pragma_target_parse (tree args, tree pop_target)
/* Remember the last target of rs6000_set_current_function. */
static GTY(()) tree rs6000_previous_fndecl;
/* Restore target's globals from NEW_TREE and invalidate the
rs6000_previous_fndecl cache. */
static void
rs6000_activate_target_options (tree new_tree)
{
cl_target_option_restore (&global_options, TREE_TARGET_OPTION (new_tree));
if (TREE_TARGET_GLOBALS (new_tree))
restore_target_globals (TREE_TARGET_GLOBALS (new_tree));
else if (new_tree == target_option_default_node)
restore_target_globals (&default_target_globals);
else
TREE_TARGET_GLOBALS (new_tree) = save_target_globals_default_opts ();
rs6000_previous_fndecl = NULL_TREE;
}
/* Establish appropriate back-end context for processing the function
FNDECL. The argument might be NULL to indicate processing at top
level, outside of any function scope. */
static void
rs6000_set_current_function (tree fndecl)
{
tree old_tree = (rs6000_previous_fndecl
? DECL_FUNCTION_SPECIFIC_TARGET (rs6000_previous_fndecl)
: NULL_TREE);
tree new_tree = (fndecl
? DECL_FUNCTION_SPECIFIC_TARGET (fndecl)
: NULL_TREE);
if (TARGET_DEBUG_TARGET)
{
bool print_final = false;
fprintf (stderr, "\n==================== rs6000_set_current_function");
if (fndecl)
@ -36693,58 +36700,60 @@ rs6000_set_current_function (tree fndecl)
fprintf (stderr, ", prev_fndecl (%p)", (void *)rs6000_previous_fndecl);
fprintf (stderr, "\n");
}
/* Only change the context if the function changes. This hook is called
several times in the course of compiling a function, and we don't want to
slow things down too much or call target_reinit when it isn't safe. */
if (fndecl == rs6000_previous_fndecl)
return;
tree old_tree;
if (rs6000_previous_fndecl == NULL_TREE)
old_tree = target_option_current_node;
else if (DECL_FUNCTION_SPECIFIC_TARGET (rs6000_previous_fndecl))
old_tree = DECL_FUNCTION_SPECIFIC_TARGET (rs6000_previous_fndecl);
else
old_tree = target_option_default_node;
tree new_tree;
if (fndecl == NULL_TREE)
{
if (old_tree != target_option_current_node)
new_tree = target_option_current_node;
else
new_tree = NULL_TREE;
}
else
{
new_tree = DECL_FUNCTION_SPECIFIC_TARGET (fndecl);
if (new_tree == NULL_TREE)
new_tree = target_option_default_node;
}
if (TARGET_DEBUG_TARGET)
{
if (new_tree)
{
fprintf (stderr, "\nnew fndecl target specific options:\n");
debug_tree (new_tree);
print_final = true;
}
if (old_tree)
{
fprintf (stderr, "\nold fndecl target specific options:\n");
debug_tree (old_tree);
print_final = true;
}
if (print_final)
if (old_tree != NULL_TREE || new_tree != NULL_TREE)
fprintf (stderr, "--------------------\n");
}
/* Only change the context if the function changes. This hook is called
several times in the course of compiling a function, and we don't want to
slow things down too much or call target_reinit when it isn't safe. */
if (fndecl && fndecl != rs6000_previous_fndecl)
{
rs6000_previous_fndecl = fndecl;
if (old_tree == new_tree)
;
if (new_tree && old_tree != new_tree)
rs6000_activate_target_options (new_tree);
else if (new_tree && new_tree != target_option_default_node)
{
cl_target_option_restore (&global_options,
TREE_TARGET_OPTION (new_tree));
if (TREE_TARGET_GLOBALS (new_tree))
restore_target_globals (TREE_TARGET_GLOBALS (new_tree));
else
TREE_TARGET_GLOBALS (new_tree)
= save_target_globals_default_opts ();
}
else if (old_tree && old_tree != target_option_default_node)
{
new_tree = target_option_current_node;
cl_target_option_restore (&global_options,
TREE_TARGET_OPTION (new_tree));
if (TREE_TARGET_GLOBALS (new_tree))
restore_target_globals (TREE_TARGET_GLOBALS (new_tree));
else if (new_tree == target_option_default_node)
restore_target_globals (&default_target_globals);
else
TREE_TARGET_GLOBALS (new_tree)
= save_target_globals_default_opts ();
}
}
if (fndecl)
rs6000_previous_fndecl = fndecl;
}

5
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,8 @@
2017-08-18 Peter Bergner <bergner@vnet.ibm.com>
PR target/80210
* gcc.target/powerpc/pr80210.c: New test.
2017-08-18 David Malcolm <dmalcolm@redhat.com>
PR c++/81514

10
gcc/testsuite/gcc.target/powerpc/pr80210.c Normal file
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@ -0,0 +1,10 @@
/* Test for ICE arising from GCC target pragma. */
/* { dg-do compile } */
/* { dg-options "-O2" } */
double
foo (double a)
{
return __builtin_sqrt (a);
}
#pragma GCC target "no-powerpc-gpopt"