This means that we know when accessing the modes that the size is
a compile-time constant, even for SVE. It also enables stricter
type safety in later patches.
gcc/
2016-11-24 Richard Sandiford <richard.sandif...@arm.com>
Alan Hayward <alan.hayw...@arm.com>
David Sherwood <david.sherw...@arm.com>
* machmode.h (mode_iterator::start): Provide overload for opt_modes.
(mode_iterator::iterate_p): Likewise.
(mode_iterator::get_wider): Likewise.
* expr.c (init_expr_target): Use opt_scalar_float_mode.
gcc/ada/
2016-11-24 Richard Sandiford <richard.sandif...@arm.com>
Alan Hayward <alan.hayw...@arm.com>
David Sherwood <david.sherw...@arm.com>
* gcc-interface/misc.c (fp_prec_to_size): Use opt_scalar_float_mode.
(fp_size_to_prec): Likewise.
gcc/c-family/
2016-11-24 Richard Sandiford <richard.sandif...@arm.com>
Alan Hayward <alan.hayw...@arm.com>
David Sherwood <david.sherw...@arm.com>
* c-cppbuiltin.c (c_cpp_builtins): Use opt_scalar_float_mode.
gcc/fortran/
2016-11-24 Richard Sandiford <richard.sandif...@arm.com>
Alan Hayward <alan.hayw...@arm.com>
David Sherwood <david.sherw...@arm.com>
* trans-types.c (gfc_init_kinds): Use opt_scalar_float_mode
and FOR_EACH_MODE_IN_CLASS.
diff --git a/gcc/ada/gcc-interface/misc.c b/gcc/ada/gcc-interface/misc.c
index 4bb22ed..cef8d84 100644
--- a/gcc/ada/gcc-interface/misc.c
+++ b/gcc/ada/gcc-interface/misc.c
@@ -1278,11 +1278,11 @@ enumerate_modes (void (*f) (const char *, int, int,
int, int, int, int, int))
int
fp_prec_to_size (int prec)
{
- machine_mode mode;
+ opt_scalar_float_mode mode;
FOR_EACH_MODE_IN_CLASS (mode, MODE_FLOAT)
- if (GET_MODE_PRECISION (mode) == prec)
- return GET_MODE_BITSIZE (mode);
+ if (GET_MODE_PRECISION (*mode) == prec)
+ return GET_MODE_BITSIZE (*mode);
gcc_unreachable ();
}
@@ -1292,11 +1292,11 @@ fp_prec_to_size (int prec)
int
fp_size_to_prec (int size)
{
- machine_mode mode;
+ opt_scalar_float_mode mode;
FOR_EACH_MODE_IN_CLASS (mode, MODE_FLOAT)
- if (GET_MODE_BITSIZE (mode) == size)
- return GET_MODE_PRECISION (mode);
+ if (GET_MODE_BITSIZE (*mode) == size)
+ return GET_MODE_PRECISION (*mode);
gcc_unreachable ();
}
diff --git a/gcc/c-family/c-cppbuiltin.c b/gcc/c-family/c-cppbuiltin.c
index 0d6f538..32a999a 100644
--- a/gcc/c-family/c-cppbuiltin.c
+++ b/gcc/c-family/c-cppbuiltin.c
@@ -1184,9 +1184,10 @@ c_cpp_builtins (cpp_reader *pfile)
if (flag_building_libgcc)
{
/* Properties of floating-point modes for libgcc2.c. */
- machine_mode mode;
- FOR_EACH_MODE_IN_CLASS (mode, MODE_FLOAT)
+ opt_scalar_float_mode mode_iter;
+ FOR_EACH_MODE_IN_CLASS (mode_iter, MODE_FLOAT)
{
+ scalar_float_mode mode = *mode_iter;
const char *name = GET_MODE_NAME (mode);
char *macro_name
= (char *) alloca (strlen (name)
diff --git a/gcc/expr.c b/gcc/expr.c
index a3a3e86..d277a88 100644
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -110,7 +110,6 @@ void
init_expr_target (void)
{
rtx pat;
- machine_mode mode;
int num_clobbers;
rtx mem, mem1;
rtx reg;
@@ -129,7 +128,7 @@ init_expr_target (void)
pat = gen_rtx_SET (NULL_RTX, NULL_RTX);
PATTERN (insn) = pat;
- for (mode = VOIDmode; (int) mode < NUM_MACHINE_MODES;
+ for (machine_mode mode = VOIDmode; (int) mode < NUM_MACHINE_MODES;
mode = (machine_mode_enum) ((int) mode + 1))
{
int regno;
@@ -175,9 +174,11 @@ init_expr_target (void)
mem = gen_rtx_MEM (VOIDmode, gen_raw_REG (Pmode, LAST_VIRTUAL_REGISTER + 1));
- FOR_EACH_MODE_IN_CLASS (mode, MODE_FLOAT)
+ opt_scalar_float_mode mode_iter;
+ FOR_EACH_MODE_IN_CLASS (mode_iter, MODE_FLOAT)
{
- machine_mode srcmode;
+ scalar_float_mode mode = *mode_iter;
+ scalar_float_mode srcmode;
FOR_EACH_MODE_UNTIL (srcmode, mode)
{
enum insn_code ic;
diff --git a/gcc/fortran/trans-types.c b/gcc/fortran/trans-types.c
index c0d1a17..4c69237 100644
--- a/gcc/fortran/trans-types.c
+++ b/gcc/fortran/trans-types.c
@@ -348,6 +348,7 @@ void
gfc_init_kinds (void)
{
machine_mode_enum mode;
+ opt_scalar_float_mode float_mode_iter;
int i_index, r_index, kind;
bool saw_i4 = false, saw_i8 = false;
bool saw_r4 = false, saw_r8 = false, saw_r10 = false, saw_r16 = false;
@@ -403,9 +404,10 @@ gfc_init_kinds (void)
/* Set the maximum integer kind. Used with at least BOZ constants. */
gfc_max_integer_kind = gfc_integer_kinds[i_index - 1].kind;
- for (r_index = 0, mode = MIN_MODE_FLOAT; mode <= MAX_MODE_FLOAT;
- mode = (machine_mode_enum) ((int) mode + 1))
+ r_index = 0;
+ FOR_EACH_MODE_IN_CLASS (float_mode_iter, MODE_FLOAT)
{
+ scalar_float_mode mode = *float_mode_iter;
const struct real_format *fmt = REAL_MODE_FORMAT (mode);
int kind;
diff --git a/gcc/machmode.h b/gcc/machmode.h
index 41a3a00..2f4b076 100644
--- a/gcc/machmode.h
+++ b/gcc/machmode.h
@@ -628,6 +628,16 @@ namespace mode_iterator
{
/* Start mode iterator *ITER at the first mode in class MCLASS, if any. */
+ template<typename T>
+ inline void
+ start (opt_mode<T> *iter, enum mode_class mclass)
+ {
+ if (GET_CLASS_NARROWEST_MODE (mclass) == E_VOIDmode)
+ *iter = opt_mode<T> ();
+ else
+ *iter = as_a<T> (GET_CLASS_NARROWEST_MODE (mclass));
+ }
+
inline void
start (machine_mode *iter, enum mode_class mclass)
{
@@ -636,6 +646,13 @@ namespace mode_iterator
/* Return true if mode iterator *ITER has not reached the end. */
+ template<typename T>
+ inline bool
+ iterate_p (opt_mode<T> *iter)
+ {
+ return iter->exists ();
+ }
+
inline bool
iterate_p (machine_mode *iter)
{
@@ -645,6 +662,13 @@ namespace mode_iterator
/* Set mode iterator *ITER to the next widest mode in the same class,
if any. */
+ template<typename T>
+ inline void
+ get_wider (opt_mode<T> *iter)
+ {
+ *iter = GET_MODE_WIDER_MODE (**iter);
+ }
+
inline void
get_wider (machine_mode *iter)
{
