diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index ca176fc5e393c1c4afe44d8f29a9b8663d09158a..23648780ce4a9d554cbe8c519f2c93faed5971cd 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,21 @@
+2017-08-30 Richard Sandiford <richard.sandiford@linaro.org>
+ Alan Hayward <alan.hayward@arm.com>
+ David Sherwood <david.sherwood@arm.com>
+
+ * rtl.h (rtl_hooks::reg_nonzero_bits): Add a scalar_int_mode
+ parameter for the mode of "x". Remove the "known_x", "known_mode"
+ and "known_ret" arguments. Change the type of the mode argument
+ to scalar_int_mode.
+ (rtl_hooks:reg_num_sign_bit_copies): Likewise.
+ * combine.c (reg_nonzero_bits_for_combine): Update accordingly.
+ (reg_num_sign_bit_copies_for_combine): Likewise.
+ * rtlanal.c (nonzero_bits1): Likewise.
+ (num_sign_bit_copies1): Likewise.
+ * rtlhooks-def.h (reg_nonzero_bits_general): Likewise.
+ (reg_num_sign_bit_copies_general): Likewise.
+ * rtlhooks.c (reg_num_sign_bit_copies_general): Likewise.
+ (reg_nonzero_bits_general): Likewise.
+
2017-08-30 Richard Sandiford <richard.sandiford@linaro.org>
Alan Hayward <alan.hayward@arm.com>
David Sherwood <david.sherwood@arm.com>
diff --git a/gcc/combine.c b/gcc/combine.c
index 5eeeeda55b607b18b2de7f2d95e9a3abc52f7f30..85a2f50bca6254938ad33741737d9e406acfd05a 100644
--- a/gcc/combine.c
+++ b/gcc/combine.c
@@ -414,13 +414,12 @@ static struct undobuf undobuf;
static int n_occurrences;
-static rtx reg_nonzero_bits_for_combine (const_rtx, machine_mode, const_rtx,
- machine_mode,
- unsigned HOST_WIDE_INT,
+static rtx reg_nonzero_bits_for_combine (const_rtx, scalar_int_mode,
+ scalar_int_mode,
unsigned HOST_WIDE_INT *);
-static rtx reg_num_sign_bit_copies_for_combine (const_rtx, machine_mode, const_rtx,
- machine_mode,
- unsigned int, unsigned int *);
+static rtx reg_num_sign_bit_copies_for_combine (const_rtx, scalar_int_mode,
+ scalar_int_mode,
+ unsigned int *);
static void do_SUBST (rtx *, rtx);
static void do_SUBST_INT (int *, int);
static void init_reg_last (void);
@@ -10035,17 +10034,15 @@ simplify_and_const_int (rtx x, scalar_int_mode mode, rtx varop,
return x;
}
-/* Given a REG, X, compute which bits in X can be nonzero.
+/* Given a REG X of mode XMODE, compute which bits in X can be nonzero.
We don't care about bits outside of those defined in MODE.
For most X this is simply GET_MODE_MASK (GET_MODE (MODE)), but if X is
a shift, AND, or zero_extract, we can do better. */
static rtx
-reg_nonzero_bits_for_combine (const_rtx x, machine_mode mode,
- const_rtx known_x ATTRIBUTE_UNUSED,
- machine_mode known_mode ATTRIBUTE_UNUSED,
- unsigned HOST_WIDE_INT known_ret ATTRIBUTE_UNUSED,
+reg_nonzero_bits_for_combine (const_rtx x, scalar_int_mode xmode,
+ scalar_int_mode mode,
unsigned HOST_WIDE_INT *nonzero)
{
rtx tem;
@@ -10086,8 +10083,7 @@ reg_nonzero_bits_for_combine (const_rtx x, machine_mode mode,
if (tem)
{
if (SHORT_IMMEDIATES_SIGN_EXTEND)
- tem = sign_extend_short_imm (tem, GET_MODE (x),
- GET_MODE_PRECISION (mode));
+ tem = sign_extend_short_imm (tem, xmode, GET_MODE_PRECISION (mode));
return tem;
}
@@ -10096,9 +10092,9 @@ reg_nonzero_bits_for_combine (const_rtx x, machine_mode mode,
{
unsigned HOST_WIDE_INT mask = rsp->nonzero_bits;
- if (GET_MODE_PRECISION (GET_MODE (x)) < GET_MODE_PRECISION (mode))
+ if (GET_MODE_PRECISION (xmode) < GET_MODE_PRECISION (mode))
/* We don't know anything about the upper bits. */
- mask |= GET_MODE_MASK (mode) ^ GET_MODE_MASK (GET_MODE (x));
+ mask |= GET_MODE_MASK (mode) ^ GET_MODE_MASK (xmode);
*nonzero &= mask;
}
@@ -10106,17 +10102,14 @@ reg_nonzero_bits_for_combine (const_rtx x, machine_mode mode,
return NULL;
}
-/* Return the number of bits at the high-order end of X that are known to
- be equal to the sign bit. X will be used in mode MODE; if MODE is
- VOIDmode, X will be used in its own mode. The returned value will always
- be between 1 and the number of bits in MODE. */
+/* Given a reg X of mode XMODE, return the number of bits at the high-order
+ end of X that are known to be equal to the sign bit. X will be used
+ in mode MODE; the returned value will always be between 1 and the
+ number of bits in MODE. */
static rtx
-reg_num_sign_bit_copies_for_combine (const_rtx x, machine_mode mode,
- const_rtx known_x ATTRIBUTE_UNUSED,
- machine_mode known_mode
- ATTRIBUTE_UNUSED,
- unsigned int known_ret ATTRIBUTE_UNUSED,
+reg_num_sign_bit_copies_for_combine (const_rtx x, scalar_int_mode xmode,
+ scalar_int_mode mode,
unsigned int *result)
{
rtx tem;
@@ -10145,7 +10138,7 @@ reg_num_sign_bit_copies_for_combine (const_rtx x, machine_mode mode,
return tem;
if (nonzero_sign_valid && rsp->sign_bit_copies != 0
- && GET_MODE_PRECISION (GET_MODE (x)) == GET_MODE_PRECISION (mode))
+ && GET_MODE_PRECISION (xmode) == GET_MODE_PRECISION (mode))
*result = rsp->sign_bit_copies;
return NULL;
diff --git a/gcc/rtl.h b/gcc/rtl.h
index 39425778536c3219868968272821d22bdcff8918..9e16b9b179fca39a9db459b55475948e7fc9d09a 100644
--- a/gcc/rtl.h
+++ b/gcc/rtl.h
@@ -3779,10 +3779,10 @@ struct rtl_hooks
{
rtx (*gen_lowpart) (machine_mode, rtx);
rtx (*gen_lowpart_no_emit) (machine_mode, rtx);
- rtx (*reg_nonzero_bits) (const_rtx, machine_mode, const_rtx, machine_mode,
- unsigned HOST_WIDE_INT, unsigned HOST_WIDE_INT *);
- rtx (*reg_num_sign_bit_copies) (const_rtx, machine_mode, const_rtx, machine_mode,
- unsigned int, unsigned int *);
+ rtx (*reg_nonzero_bits) (const_rtx, scalar_int_mode, scalar_int_mode,
+ unsigned HOST_WIDE_INT *);
+ rtx (*reg_num_sign_bit_copies) (const_rtx, scalar_int_mode, scalar_int_mode,
+ unsigned int *);
bool (*reg_truncated_to_mode) (machine_mode, const_rtx);
/* Whenever you add entries here, make sure you adjust rtlhooks-def.h. */
diff --git a/gcc/rtlanal.c b/gcc/rtlanal.c
index 605fd973d0b129d9b991eddb9fc2996fdcd34590..3066ae20c4d4da3a6e640eadfd3339446156d798 100644
--- a/gcc/rtlanal.c
+++ b/gcc/rtlanal.c
@@ -4449,9 +4449,8 @@ nonzero_bits1 (const_rtx x, scalar_int_mode mode, const_rtx known_x,
{
unsigned HOST_WIDE_INT nonzero_for_hook = nonzero;
- rtx new_rtx = rtl_hooks.reg_nonzero_bits (x, mode, known_x,
- known_mode, known_ret,
- &nonzero_for_hook);
+ rtx new_rtx = rtl_hooks.reg_nonzero_bits (x, xmode, mode,
+ &nonzero_for_hook);
if (new_rtx)
nonzero_for_hook &= cached_nonzero_bits (new_rtx, mode, known_x,
@@ -4943,9 +4942,8 @@ num_sign_bit_copies1 (const_rtx x, scalar_int_mode mode, const_rtx known_x,
{
unsigned int copies_for_hook = 1, copies = 1;
- rtx new_rtx = rtl_hooks.reg_num_sign_bit_copies (x, mode, known_x,
- known_mode, known_ret,
- &copies_for_hook);
+ rtx new_rtx = rtl_hooks.reg_num_sign_bit_copies (x, xmode, mode,
+ &copies_for_hook);
if (new_rtx)
copies = cached_num_sign_bit_copies (new_rtx, mode, known_x,
diff --git a/gcc/rtlhooks-def.h b/gcc/rtlhooks-def.h
index 936189244eab6361e724887b7536556b299b2964..afc5c02f0e16becef4d4e2691f9cd114f36c2146 100644
--- a/gcc/rtlhooks-def.h
+++ b/gcc/rtlhooks-def.h
@@ -38,13 +38,11 @@ along with GCC; see the file COPYING3. If not see
}
extern rtx gen_lowpart_general (machine_mode, rtx);
-extern rtx reg_nonzero_bits_general (const_rtx, machine_mode, const_rtx,
- machine_mode,
- unsigned HOST_WIDE_INT,
+extern rtx reg_nonzero_bits_general (const_rtx, scalar_int_mode,
+ scalar_int_mode,
unsigned HOST_WIDE_INT *);
-extern rtx reg_num_sign_bit_copies_general (const_rtx, machine_mode, const_rtx,
- machine_mode,
- unsigned int, unsigned int *);
+extern rtx reg_num_sign_bit_copies_general (const_rtx, scalar_int_mode,
+ scalar_int_mode, unsigned int *);
extern bool reg_truncated_to_mode_general (machine_mode, const_rtx);
#endif /* GCC_RTL_HOOKS_DEF_H */
diff --git a/gcc/rtlhooks.c b/gcc/rtlhooks.c
index 9704e2a774223e6e5ebbafa410d988a57ca602a6..b008b15e78ec4a13d6d8979b4743538c80e482e3 100644
--- a/gcc/rtlhooks.c
+++ b/gcc/rtlhooks.c
@@ -86,23 +86,15 @@ gen_lowpart_general (machine_mode mode, rtx x)
}
rtx
-reg_num_sign_bit_copies_general (const_rtx x ATTRIBUTE_UNUSED,
- machine_mode mode ATTRIBUTE_UNUSED,
- const_rtx known_x ATTRIBUTE_UNUSED,
- machine_mode known_mode ATTRIBUTE_UNUSED,
- unsigned int known_ret ATTRIBUTE_UNUSED,
- unsigned int *result ATTRIBUTE_UNUSED)
+reg_num_sign_bit_copies_general (const_rtx, scalar_int_mode, scalar_int_mode,
+ unsigned int *)
{
return NULL;
}
rtx
-reg_nonzero_bits_general (const_rtx x ATTRIBUTE_UNUSED,
- machine_mode mode ATTRIBUTE_UNUSED,
- const_rtx known_x ATTRIBUTE_UNUSED,
- machine_mode known_mode ATTRIBUTE_UNUSED,
- unsigned HOST_WIDE_INT known_ret ATTRIBUTE_UNUSED,
- unsigned HOST_WIDE_INT *nonzero ATTRIBUTE_UNUSED)
+reg_nonzero_bits_general (const_rtx, scalar_int_mode, scalar_int_mode,
+ unsigned HOST_WIDE_INT *)
{
return NULL;
}