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Move c6x REGNO_REG_CLASS out of line

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I have a series of patches that hides call_used_regs from target-
independent code, a knock-on effect of which is that (public) target
macros can't use call_used_regs either.  This patch fixes the only
case in which that was a problem.

2019-09-10  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
	* config/c6x/c6x-protos.h (c6x_set_return_address): Declare.
	* config/c6x/c6x.h (REGNO_REG_CLASS): Move implementation to
	* config/c6x/c6x.c (c6x_regno_reg_class): ...this new function.

From-SVN: r275597
This commit is contained in:
Richard Sandiford 2019-09-10 18:56:21 +00:00 • committed by Richard Sandiford
parent 0f8b14ee8a
commit 031e885788
4 changed files with 31 additions and 6 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2019-09-10 Richard Sandiford <richard.sandiford@arm.com>
* config/c6x/c6x-protos.h (c6x_set_return_address): Declare.
* config/c6x/c6x.h (REGNO_REG_CLASS): Move implementation to
* config/c6x/c6x.c (c6x_regno_reg_class): ...this new function.
2019-09-10 Richard Sandiford <richard.sandiford@arm.com>
* rtl.h (get_call_rtx_from): Take a const rtx_insn * instead of an rtx.

2
gcc/config/c6x/c6x-protos.h
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@ -53,6 +53,8 @@ extern void c6x_expand_epilogue (bool);
extern rtx c6x_return_addr_rtx (int);
extern void c6x_set_return_address (rtx, rtx);
enum reg_class c6x_regno_reg_class (int);
#endif
extern void c6x_override_options (void);

22
gcc/config/c6x/c6x.c
View file

@ -6677,6 +6677,28 @@ c6x_modes_tieable_p (machine_mode mode1, machine_mode mode2)
&& GET_MODE_SIZE (mode2) <= UNITS_PER_WORD));
}
/* Implement REGNO_REG_CLASS. */
enum reg_class
c6x_regno_reg_class (int reg)
{
if (reg >= REG_A1 && reg <= REG_A2)
return PREDICATE_A_REGS;
if (reg == REG_A0 && TARGET_INSNS_64)
return PREDICATE_A_REGS;
if (reg >= REG_B0 && reg <= REG_B2)
return PREDICATE_B_REGS;
if (A_REGNO_P (reg))
return NONPREDICATE_A_REGS;
if (call_used_regs[reg])
return CALL_USED_B_REGS;
return B_REGS;
}
/* Target Structure. */

7
gcc/config/c6x/c6x.h
View file

@ -259,12 +259,7 @@ enum reg_class
#define CROSS_OPERANDS(X0,X1) \
(A_REG_P (X0) == A_REG_P (X1) ? CROSS_N : CROSS_Y)
#define REGNO_REG_CLASS(reg) \
((reg) >= REG_A1 && (reg) <= REG_A2 ? PREDICATE_A_REGS \
: (reg) == REG_A0 && TARGET_INSNS_64 ? PREDICATE_A_REGS \
: (reg) >= REG_B0 && (reg) <= REG_B2 ? PREDICATE_B_REGS \
: A_REGNO_P (reg) ? NONPREDICATE_A_REGS \
: call_used_regs[reg] ? CALL_USED_B_REGS : B_REGS)
#define REGNO_REG_CLASS(reg) c6x_regno_reg_class (reg)
#define BASE_REG_CLASS ALL_REGS
#define INDEX_REG_CLASS ALL_REGS