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RISC-V: Remove unnecessary register class.

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Avoid VL_REGS, VTYPE_REGS join register allocation.

gcc/ChangeLog:

	* config/riscv/riscv.h: Remove VL_REGS, VTYPE_REGS class.
	* config/riscv/riscv.cc: Ditto.
This commit is contained in:
Monk Chiang 2023-02-03 12:58:51 +08:00 • committed by Kito Cheng
parent f3a10f4fff
commit 167b04b9b8
2 changed files with 2 additions and 14 deletions
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8
gcc/config/riscv/riscv.cc
View file

@ -293,7 +293,7 @@ const enum reg_class riscv_regno_to_class[FIRST_PSEUDO_REGISTER] = {
FP_REGS, FP_REGS, FP_REGS, FP_REGS,
FP_REGS, FP_REGS, FP_REGS, FP_REGS,
FP_REGS, FP_REGS, FP_REGS, FP_REGS,
FRAME_REGS, FRAME_REGS, VL_REGS, VTYPE_REGS,
FRAME_REGS, FRAME_REGS, NO_REGS, NO_REGS,
NO_REGS, NO_REGS, NO_REGS, NO_REGS,
NO_REGS, NO_REGS, NO_REGS, NO_REGS,
NO_REGS, NO_REGS, NO_REGS, NO_REGS,
@ -5831,12 +5831,6 @@ riscv_class_max_nregs (reg_class_t rclass, machine_mode mode)
if (reg_class_subset_p (rclass, V_REGS))
return riscv_hard_regno_nregs (V_REG_FIRST, mode);
if (reg_class_subset_p (rclass, VL_REGS))
return 1;
if (reg_class_subset_p (rclass, VTYPE_REGS))
return 1;
return 0;
}

8
gcc/config/riscv/riscv.h
View file

@ -462,8 +462,6 @@ enum reg_class
GR_REGS, /* integer registers */
FP_REGS, /* floating-point registers */
FRAME_REGS, /* arg pointer and frame pointer */
VL_REGS, /* vl register */
VTYPE_REGS, /* vtype register */
VM_REGS, /* v0.t registers */
VD_REGS, /* vector registers except v0.t */
V_REGS, /* vector registers */
@ -487,8 +485,6 @@ enum reg_class
"GR_REGS", \
"FP_REGS", \
"FRAME_REGS", \
"VL_REGS", \
"VTYPE_REGS", \
"VM_REGS", \
"VD_REGS", \
"V_REGS", \
@ -514,12 +510,10 @@ enum reg_class
{ 0xffffffff, 0x00000000, 0x00000000, 0x00000000 }, /* GR_REGS */ \
{ 0x00000000, 0xffffffff, 0x00000000, 0x00000000 }, /* FP_REGS */ \
{ 0x00000000, 0x00000000, 0x00000003, 0x00000000 }, /* FRAME_REGS */ \
{ 0x00000000, 0x00000000, 0x00000004, 0x00000000 }, /* VL_REGS */ \
{ 0x00000000, 0x00000000, 0x00000008, 0x00000000 }, /* VTYPE_REGS */ \
{ 0x00000000, 0x00000000, 0x00000000, 0x00000001 }, /* V0_REGS */ \
{ 0x00000000, 0x00000000, 0x00000000, 0xfffffffe }, /* VNoV0_REGS */ \
{ 0x00000000, 0x00000000, 0x00000000, 0xffffffff }, /* V_REGS */ \
{ 0xffffffff, 0xffffffff, 0x0000000f, 0xffffffff } /* ALL_REGS */ \
{ 0xffffffff, 0xffffffff, 0x00000003, 0xffffffff } /* ALL_REGS */ \
}
/* A C expression whose value is a register class containing hard