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re PR middle-end/59630 (ICE converting the return type of a builtin function)

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2014-01-08  Richard Biener  <rguenther@suse.de>

	PR middle-end/59630
	* gimple.h (is_gimple_builtin_call): Remove.
	(gimple_builtin_call_types_compatible_p): New.
	(gimple_call_builtin_p): New overload.
	* gimple.c (is_gimple_builtin_call): Remove.
	(validate_call): Rename to ...
	(gimple_builtin_call_types_compatible_p): ... this and export.  Also
	check return types.
	(validate_type): New static function.
	(gimple_call_builtin_p): New overload and adjust.
	* gimple-fold.c (gimple_fold_builtin): Fold the return value.
	(gimple_fold_call): Likewise.  Use gimple_call_builtin_p.
	(gimple_fold_stmt_to_constant_1): Likewise.
	* tsan.c (instrument_gimple): Use gimple_call_builtin_p.

	* gcc.dg/pr59630.c: New testcase.

From-SVN: r206421
This commit is contained in:
Richard Biener 2014-01-08 09:06:27 +00:00 committed by Richard Biener
parent 0bd34ae421
commit 5c944c6cb8
7 changed files with 89 additions and 38 deletions
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17
gcc/ChangeLog
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@ -1,3 +1,20 @@
2014-01-08 Richard Biener <rguenther@suse.de>
PR middle-end/59630
* gimple.h (is_gimple_builtin_call): Remove.
(gimple_builtin_call_types_compatible_p): New.
(gimple_call_builtin_p): New overload.
* gimple.c (is_gimple_builtin_call): Remove.
(validate_call): Rename to ...
(gimple_builtin_call_types_compatible_p): ... this and export. Also
check return types.
(validate_type): New static function.
(gimple_call_builtin_p): New overload and adjust.
* gimple-fold.c (gimple_fold_builtin): Fold the return value.
(gimple_fold_call): Likewise. Use gimple_call_builtin_p.
(gimple_fold_stmt_to_constant_1): Likewise.
* tsan.c (instrument_gimple): Use gimple_call_builtin_p.
2014-01-08 Richard Biener <rguenther@suse.de>
PR middle-end/59471

20
gcc/gimple-fold.c
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@ -879,8 +879,6 @@ gimple_fold_builtin (gimple stmt)
int nargs;
location_t loc = gimple_location (stmt);
gcc_assert (is_gimple_call (stmt));
ignore = (gimple_call_lhs (stmt) == NULL);
/* First try the generic builtin folder. If that succeeds, return the
@ -890,6 +888,8 @@ gimple_fold_builtin (gimple stmt)
{
if (ignore)
STRIP_NOPS (result);
else
result = fold_convert (gimple_call_return_type (stmt), result);
return result;
}
@ -1206,8 +1206,7 @@ gimple_fold_call (gimple_stmt_iterator *gsi, bool inplace)
/* Check for builtins that CCP can handle using information not
available in the generic fold routines. */
callee = gimple_call_fndecl (stmt);
if (callee && DECL_BUILT_IN (callee))
if (gimple_call_builtin_p (stmt))
{
tree result = gimple_fold_builtin (stmt);
if (result)
@ -1216,7 +1215,7 @@ gimple_fold_call (gimple_stmt_iterator *gsi, bool inplace)
gimplify_and_update_call_from_tree (gsi, result);
changed = true;
}
else if (DECL_BUILT_IN_CLASS (callee) == BUILT_IN_MD)
else if (gimple_call_builtin_p (stmt, BUILT_IN_MD))
changed |= targetm.gimple_fold_builtin (gsi);
}
@ -2726,7 +2725,9 @@ gimple_fold_stmt_to_constant_1 (gimple stmt, tree (*valueize) (tree))
fn = (*valueize) (gimple_call_fn (stmt));
if (TREE_CODE (fn) == ADDR_EXPR
&& TREE_CODE (TREE_OPERAND (fn, 0)) == FUNCTION_DECL
&& DECL_BUILT_IN (TREE_OPERAND (fn, 0)))
&& DECL_BUILT_IN (TREE_OPERAND (fn, 0))
&& gimple_builtin_call_types_compatible_p (stmt,
TREE_OPERAND (fn, 0)))
{
tree *args = XALLOCAVEC (tree, gimple_call_num_args (stmt));
tree call, retval;
@ -2738,8 +2739,11 @@ gimple_fold_stmt_to_constant_1 (gimple stmt, tree (*valueize) (tree))
fn, gimple_call_num_args (stmt), args);
retval = fold_call_expr (EXPR_LOCATION (call), call, false);
if (retval)
/* fold_call_expr wraps the result inside a NOP_EXPR. */
STRIP_NOPS (retval);
{
/* fold_call_expr wraps the result inside a NOP_EXPR. */
STRIP_NOPS (retval);
retval = fold_convert (gimple_call_return_type (stmt), retval);
}
return retval;
}
return NULL_TREE;

72
gcc/gimple.c
View File

@ -2351,27 +2351,37 @@ gimple_ior_addresses_taken (bitmap addresses_taken, gimple stmt)
}
/* Return TRUE iff stmt is a call to a built-in function. */
bool
is_gimple_builtin_call (gimple stmt)
{
tree callee;
if (is_gimple_call (stmt)
&& (callee = gimple_call_fndecl (stmt))
&& is_builtin_fn (callee)
&& DECL_BUILT_IN_CLASS (callee) == BUILT_IN_NORMAL)
return true;
return false;
}
/* Return true when STMTs arguments match those of FNDECL. */
/* Return true if TYPE1 and TYPE2 are compatible enough for builtin
processing. */
static bool
validate_call (gimple stmt, tree fndecl)
validate_type (tree type1, tree type2)
{
if (INTEGRAL_TYPE_P (type1)
&& INTEGRAL_TYPE_P (type2))
;
else if (POINTER_TYPE_P (type1)
&& POINTER_TYPE_P (type2))
;
else if (TREE_CODE (type1)
!= TREE_CODE (type2))
return false;
return true;
}
/* Return true when STMTs arguments and return value match those of FNDECL,
a decl of a builtin function. */
bool
gimple_builtin_call_types_compatible_p (gimple stmt, tree fndecl)
{
gcc_checking_assert (DECL_BUILT_IN_CLASS (fndecl) != NOT_BUILT_IN);
tree ret = gimple_call_lhs (stmt);
if (ret
&& !validate_type (TREE_TYPE (ret), TREE_TYPE (TREE_TYPE (fndecl))))
return false;
tree targs = TYPE_ARG_TYPES (TREE_TYPE (fndecl));
unsigned nargs = gimple_call_num_args (stmt);
for (unsigned i = 0; i < nargs; ++i)
@ -2380,14 +2390,7 @@ validate_call (gimple stmt, tree fndecl)
if (!targs)
return true;
tree arg = gimple_call_arg (stmt, i);
if (INTEGRAL_TYPE_P (TREE_TYPE (arg))
&& INTEGRAL_TYPE_P (TREE_VALUE (targs)))
;
else if (POINTER_TYPE_P (TREE_TYPE (arg))
&& POINTER_TYPE_P (TREE_VALUE (targs)))
;
else if (TREE_CODE (TREE_TYPE (arg))
!= TREE_CODE (TREE_VALUE (targs)))
if (!validate_type (TREE_TYPE (arg), TREE_VALUE (targs)))
return false;
targs = TREE_CHAIN (targs);
}
@ -2396,6 +2399,19 @@ validate_call (gimple stmt, tree fndecl)
return true;
}
/* Return true when STMT is builtins call. */
bool
gimple_call_builtin_p (gimple stmt)
{
tree fndecl;
if (is_gimple_call (stmt)
&& (fndecl = gimple_call_fndecl (stmt)) != NULL_TREE
&& DECL_BUILT_IN_CLASS (fndecl) != NOT_BUILT_IN)
return gimple_builtin_call_types_compatible_p (stmt, fndecl);
return false;
}
/* Return true when STMT is builtins call to CLASS. */
bool
@ -2405,7 +2421,7 @@ gimple_call_builtin_p (gimple stmt, enum built_in_class klass)
if (is_gimple_call (stmt)
&& (fndecl = gimple_call_fndecl (stmt)) != NULL_TREE
&& DECL_BUILT_IN_CLASS (fndecl) == klass)
return validate_call (stmt, fndecl);
return gimple_builtin_call_types_compatible_p (stmt, fndecl);
return false;
}
@ -2419,7 +2435,7 @@ gimple_call_builtin_p (gimple stmt, enum built_in_function code)
&& (fndecl = gimple_call_fndecl (stmt)) != NULL_TREE
&& DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_NORMAL
&& DECL_FUNCTION_CODE (fndecl) == code)
return validate_call (stmt, fndecl);
return gimple_builtin_call_types_compatible_p (stmt, fndecl);
return false;
}

3
gcc/gimple.h
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@ -1253,7 +1253,8 @@ extern tree gimple_unsigned_type (tree);
extern tree gimple_signed_type (tree);
extern alias_set_type gimple_get_alias_set (tree);
extern bool gimple_ior_addresses_taken (bitmap, gimple);
extern bool is_gimple_builtin_call (gimple stmt);
extern bool gimple_builtin_call_types_compatible_p (gimple, tree);
extern bool gimple_call_builtin_p (gimple);
extern bool gimple_call_builtin_p (gimple, enum built_in_class);
extern bool gimple_call_builtin_p (gimple, enum built_in_function);
extern bool gimple_asm_clobbers_memory_p (const_gimple);

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2014-01-08 Richard Biener <rguenther@suse.de>
PR middle-end/59630
* gcc.dg/pr59630.c: New testcase.
2014-01-08 Richard Biener <rguenther@suse.de>
PR middle-end/59471

8
gcc/testsuite/gcc.dg/pr59630.c Normal file
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@ -0,0 +1,8 @@
/* { dg-do compile } */
/* { dg-options "-O" } */
_Bool foo()
{
_Bool (*f)(int) = __builtin_abs; /* { dg-warning "" } */
return f(0);
}

2
gcc/tsan.c
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@ -609,7 +609,7 @@ instrument_gimple (gimple_stmt_iterator *gsi)
&& (gimple_call_fndecl (stmt)
!= builtin_decl_implicit (BUILT_IN_TSAN_INIT)))
{
if (is_gimple_builtin_call (stmt))
if (gimple_call_builtin_p (stmt, BUILT_IN_NORMAL))
instrument_builtin_call (gsi);
return true;
}