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target-insns.def (can_extend, ptr_extend): New targetm instruction patterns. 

gcc/
	* target-insns.def (can_extend, ptr_extend): New targetm instruction
	patterns.
	* optabs.c (can_extend_p): Use them instead of HAVE_*/gen_* interface.
	* simplify-rtx.c (simplify_unary_operation_1): Likewise.
	* emit-rtl.c (set_reg_attrs_from_value): Likewise.
	* rtlanal.c (nonzero_bits1): Likewise.
	(num_sign_bit_copies1): Likewise.

From-SVN: r226324
This commit is contained in:
Richard Sandiford 2015-07-28 19:59:40 +00:00 committed by Richard Sandiford
parent 3b0b0013f6
commit 2a870875df
6 changed files with 30 additions and 15 deletions
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10
gcc/ChangeLog
View File

@ -1,3 +1,13 @@
2015-07-28 Richard Sandiford <richard.sandiford@arm.com>
* target-insns.def (can_extend, ptr_extend): New targetm instruction
patterns.
* optabs.c (can_extend_p): Use them instead of HAVE_*/gen_* interface.
* simplify-rtx.c (simplify_unary_operation_1): Likewise.
* emit-rtl.c (set_reg_attrs_from_value): Likewise.
* rtlanal.c (nonzero_bits1): Likewise.
(num_sign_bit_copies1): Likewise.
2015-07-28 Richard Sandiford <richard.sandiford@arm.com>
* target-insns.def (eh_return): New targetm instruction pattern.

7
gcc/emit-rtl.c
View File

@ -1159,9 +1159,10 @@ set_reg_attrs_from_value (rtx reg, rtx x)
|| GET_CODE (x) == TRUNCATE
|| (GET_CODE (x) == SUBREG && subreg_lowpart_p (x)))
{
#if defined(POINTERS_EXTEND_UNSIGNED) && !defined(HAVE_ptr_extend)
if ((GET_CODE (x) == SIGN_EXTEND && POINTERS_EXTEND_UNSIGNED)
|| (GET_CODE (x) != SIGN_EXTEND && ! POINTERS_EXTEND_UNSIGNED))
#if defined(POINTERS_EXTEND_UNSIGNED)
if (((GET_CODE (x) == SIGN_EXTEND && POINTERS_EXTEND_UNSIGNED)
|| (GET_CODE (x) != SIGN_EXTEND && ! POINTERS_EXTEND_UNSIGNED))
&& !targetm.have_ptr_extend ())
can_be_reg_pointer = false;
#endif
x = XEXP (x, 0);

6
gcc/optabs.c
View File

@ -4851,10 +4851,8 @@ can_extend_p (machine_mode to_mode, machine_mode from_mode,
int unsignedp)
{
convert_optab tab;
#ifdef HAVE_ptr_extend
if (unsignedp < 0)
return CODE_FOR_ptr_extend;
#endif
if (unsignedp < 0 && targetm.have_ptr_extend ())
return targetm.code_for_ptr_extend;
tab = unsignedp ? zext_optab : sext_optab;
return convert_optab_handler (tab, to_mode, from_mode);

10
gcc/rtlanal.c
View File

@ -4278,7 +4278,7 @@ nonzero_bits1 (const_rtx x, machine_mode mode, const_rtx known_x,
switch (code)
{
case REG:
#if defined(POINTERS_EXTEND_UNSIGNED) && !defined(HAVE_ptr_extend)
#if defined(POINTERS_EXTEND_UNSIGNED)
/* If pointers extend unsigned and this is a pointer in Pmode, say that
all the bits above ptr_mode are known to be zero. */
/* As we do not know which address space the pointer is referring to,
@ -4286,7 +4286,8 @@ nonzero_bits1 (const_rtx x, machine_mode mode, const_rtx known_x,
or address modes depending on the address space. */
if (target_default_pointer_address_modes_p ()
&& POINTERS_EXTEND_UNSIGNED && GET_MODE (x) == Pmode
&& REG_POINTER (x))
&& REG_POINTER (x)
&& !targetm.have_ptr_extend ())
nonzero &= GET_MODE_MASK (ptr_mode);
#endif
@ -4785,7 +4786,7 @@ num_sign_bit_copies1 (const_rtx x, machine_mode mode, const_rtx known_x,
{
case REG:
#if defined(POINTERS_EXTEND_UNSIGNED) && !defined(HAVE_ptr_extend)
#if defined(POINTERS_EXTEND_UNSIGNED)
/* If pointers extend signed and this is a pointer in Pmode, say that
all the bits above ptr_mode are known to be sign bit copies. */
/* As we do not know which address space the pointer is referring to,
@ -4793,7 +4794,8 @@ num_sign_bit_copies1 (const_rtx x, machine_mode mode, const_rtx known_x,
or address modes depending on the address space. */
if (target_default_pointer_address_modes_p ()
&& ! POINTERS_EXTEND_UNSIGNED && GET_MODE (x) == Pmode
&& mode == Pmode && REG_POINTER (x))
&& mode == Pmode && REG_POINTER (x)
&& !targetm.have_ptr_extend ())
return GET_MODE_PRECISION (Pmode) - GET_MODE_PRECISION (ptr_mode) + 1;
#endif

10
gcc/simplify-rtx.c
View File

@ -1431,7 +1431,7 @@ simplify_unary_operation_1 (enum rtx_code code, machine_mode mode, rtx op)
}
}
#if defined(POINTERS_EXTEND_UNSIGNED) && !defined(HAVE_ptr_extend)
#if defined(POINTERS_EXTEND_UNSIGNED)
/* As we do not know which address space the pointer is referring to,
we can do this only if the target does not support different pointer
or address modes depending on the address space. */
@ -1442,7 +1442,8 @@ simplify_unary_operation_1 (enum rtx_code code, machine_mode mode, rtx op)
|| (GET_CODE (op) == SUBREG
&& REG_P (SUBREG_REG (op))
&& REG_POINTER (SUBREG_REG (op))
&& GET_MODE (SUBREG_REG (op)) == Pmode)))
&& GET_MODE (SUBREG_REG (op)) == Pmode))
&& !targetm.have_ptr_extend ())
return convert_memory_address (Pmode, op);
#endif
break;
@ -1552,7 +1553,7 @@ simplify_unary_operation_1 (enum rtx_code code, machine_mode mode, rtx op)
GET_MODE (SUBREG_REG (op)));
}
#if defined(POINTERS_EXTEND_UNSIGNED) && !defined(HAVE_ptr_extend)
#if defined(POINTERS_EXTEND_UNSIGNED)
/* As we do not know which address space the pointer is referring to,
we can do this only if the target does not support different pointer
or address modes depending on the address space. */
@ -1563,7 +1564,8 @@ simplify_unary_operation_1 (enum rtx_code code, machine_mode mode, rtx op)
|| (GET_CODE (op) == SUBREG
&& REG_P (SUBREG_REG (op))
&& REG_POINTER (SUBREG_REG (op))
&& GET_MODE (SUBREG_REG (op)) == Pmode)))
&& GET_MODE (SUBREG_REG (op)) == Pmode))
&& !targetm.have_ptr_extend ())
return convert_memory_address (Pmode, op);
#endif
break;

2
gcc/target-insns.def
View File

@ -34,6 +34,7 @@ DEF_TARGET_INSN (allocate_stack, (rtx x0, rtx x1))
DEF_TARGET_INSN (builtin_longjmp, (rtx x0))
DEF_TARGET_INSN (builtin_setjmp_receiver, (rtx x0))
DEF_TARGET_INSN (builtin_setjmp_setup, (rtx x0))
DEF_TARGET_INSN (can_extend, (rtx x0, rtx x1))
DEF_TARGET_INSN (canonicalize_funcptr_for_compare, (rtx x0, rtx x1))
DEF_TARGET_INSN (casesi, (rtx x0, rtx x1, rtx x2, rtx x3, rtx x4))
DEF_TARGET_INSN (check_stack, (rtx x0))
@ -58,6 +59,7 @@ DEF_TARGET_INSN (prefetch, (rtx x0, rtx x1, rtx x2))
DEF_TARGET_INSN (probe_stack, (rtx x0))
DEF_TARGET_INSN (probe_stack_address, (rtx x0))
DEF_TARGET_INSN (prologue, (void))
DEF_TARGET_INSN (ptr_extend, (rtx x0, rtx x1))
DEF_TARGET_INSN (restore_stack_block, (rtx x0, rtx x1))
DEF_TARGET_INSN (restore_stack_function, (rtx x0, rtx x1))
DEF_TARGET_INSN (restore_stack_nonlocal, (rtx x0, rtx x1))