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assembler/bdw: Add the support of align1 register-indirect addressing mode on Gen8

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Otherwise it can't compile the following GPU shader that uses the
register-indirect addressing mode.
  >add.sat (16) r[a0.5,0]<1>:uw     r[a0.5,0]<16;16,1>:uw  0x0080:uw
  >add.sat (16) r[a0.5,32]<1>:uw    r[a0.5,32]<16;16,1>:uw 0x0080:uw

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
This commit is contained in:
Zhao Yakui 2013-04-09 09:59:15 +08:00 committed by Ben Widawsky
parent 60c9b41e11
commit 88e5f1fdf8
3 changed files with 101 additions and 15 deletions
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64
assembler/gen8_instruction.c
View File

@ -47,8 +47,7 @@ gen8_set_dst(struct gen8_instruction *inst, struct brw_reg reg)
gen8_set_dst_reg_file(inst, reg.file);
gen8_set_dst_reg_type(inst, reg.type);
assert(reg.address_mode == BRW_ADDRESS_DIRECT);
if (reg.address_mode == BRW_ADDRESS_DIRECT) {
gen8_set_dst_da_reg_nr(inst, reg.nr);
if (gen8_access_mode(inst) == BRW_ALIGN_1) {
@ -65,6 +64,22 @@ gen8_set_dst(struct gen8_instruction *inst, struct brw_reg reg)
gen8_set_dst_da16_subreg_nr(inst, reg.subnr >> 4);
gen8_set_da16_writemask(inst, reg.dw1.bits.writemask);
}
} else {
/* Indirect mode */
assert (gen8_access_mode(inst) == BRW_ALIGN_1);
gen8_set_dst_addr_mode(inst, BRW_ADDRESS_REGISTER_INDIRECT_REGISTER);
/* Set Dst.HorzStride */
if (reg.hstride == BRW_HORIZONTAL_STRIDE_0)
reg.hstride = BRW_HORIZONTAL_STRIDE_1;
gen8_set_dst_da1_hstride(inst, reg.hstride);
gen8_set_dst_ida1_sub_nr(inst, reg.subnr);
gen8_set_dst_ida1_imm8(inst, (reg.dw1.bits.indirect_offset & IMM8_MASK));
if ((reg.dw1.bits.indirect_offset & IMM9_MASK) == IMM9_MASK)
gen8_set_dst_ida1_imm9(inst, 1);
else
gen8_set_dst_ida1_imm9(inst, 0);
}
/* Generators should set a default exec_size of either 8 (SIMD4x2 or SIMD8)
* or 16 (SIMD16), as that's normally correct. However, when dealing with
@ -160,7 +175,6 @@ gen8_set_src0(struct gen8_instruction *inst, struct brw_reg reg)
gen8_set_src0_abs(inst, reg.abs);
gen8_set_src0_negate(inst, reg.negate);
assert(reg.address_mode == BRW_ADDRESS_DIRECT);
if (reg.file == BRW_IMMEDIATE_VALUE) {
inst->data[3] = reg.dw1.ud;
@ -168,7 +182,7 @@ gen8_set_src0(struct gen8_instruction *inst, struct brw_reg reg)
/* Required to set some fields in src1 as well: */
gen8_set_src1_reg_file(inst, 0); /* arf */
gen8_set_src1_reg_type(inst, reg.type);
} else {
} else if (reg.address_mode == BRW_ADDRESS_DIRECT) {
gen8_set_src0_da_reg_nr(inst, reg.nr);
if (gen8_access_mode(inst) == BRW_ALIGN_1) {
@ -211,6 +225,25 @@ gen8_set_src0(struct gen8_instruction *inst, struct brw_reg reg)
else
gen8_set_src0_vert_stride(inst, reg.vstride);
}
} else if (reg.address_mode == BRW_ADDRESS_REGISTER_INDIRECT_REGISTER) {
assert (gen8_access_mode(inst) == BRW_ALIGN_1);
if (reg.width == BRW_WIDTH_1 &&
gen8_exec_size(inst) == BRW_EXECUTE_1) {
gen8_set_src0_da1_hstride(inst, BRW_HORIZONTAL_STRIDE_0);
gen8_set_src0_vert_stride(inst, BRW_VERTICAL_STRIDE_0);
} else {
gen8_set_src0_da1_hstride(inst, reg.hstride);
gen8_set_src0_vert_stride(inst, reg.vstride);
}
gen8_set_src0_da1_width(inst, reg.width);
gen8_set_src0_ida1_sub_nr(inst, reg.subnr);
gen8_set_src0_addr_mode(inst, BRW_ADDRESS_REGISTER_INDIRECT_REGISTER);
gen8_set_src0_ida1_imm8(inst, (reg.dw1.bits.indirect_offset & IMM8_MASK));
if ((reg.dw1.bits.indirect_offset & IMM9_MASK) == IMM9_MASK)
gen8_set_src0_ida1_imm9(inst, 1);
else
gen8_set_src0_ida1_imm9(inst, 0);
}
}
@ -236,11 +269,9 @@ gen8_set_src1(struct gen8_instruction *inst, struct brw_reg reg)
/* Only src1 can be an immediate in two-argument instructions. */
assert(gen8_src0_reg_file(inst) != BRW_IMMEDIATE_VALUE);
assert(reg.address_mode == BRW_ADDRESS_DIRECT);
if (reg.file == BRW_IMMEDIATE_VALUE) {
inst->data[3] = reg.dw1.ud;
} else {
} else if (reg.address_mode == BRW_ADDRESS_DIRECT) {
gen8_set_src1_da_reg_nr(inst, reg.nr);
if (gen8_access_mode(inst) == BRW_ALIGN_1) {
@ -282,6 +313,25 @@ gen8_set_src1(struct gen8_instruction *inst, struct brw_reg reg)
else
gen8_set_src1_vert_stride(inst, reg.vstride);
}
} else if (reg.address_mode == BRW_ADDRESS_REGISTER_INDIRECT_REGISTER) {
assert (gen8_access_mode(inst) == BRW_ALIGN_1);
if (reg.width == BRW_WIDTH_1 &&
gen8_exec_size(inst) == BRW_EXECUTE_1) {
gen8_set_src1_da1_hstride(inst, BRW_HORIZONTAL_STRIDE_0);
gen8_set_src1_vert_stride(inst, BRW_VERTICAL_STRIDE_0);
} else {
gen8_set_src1_da1_hstride(inst, reg.hstride);
gen8_set_src1_vert_stride(inst, reg.vstride);
}
gen8_set_src1_da1_width(inst, reg.width);
gen8_set_src1_ida1_sub_nr(inst, reg.subnr);
gen8_set_src1_addr_mode(inst, BRW_ADDRESS_REGISTER_INDIRECT_REGISTER);
gen8_set_src1_ida1_imm8(inst, (reg.dw1.bits.indirect_offset & IMM8_MASK));
if ((reg.dw1.bits.indirect_offset & IMM9_MASK) == IMM9_MASK)
gen8_set_src1_ida1_imm9(inst, 1);
else
gen8_set_src1_ida1_imm9(inst, 0);
}
}

24
assembler/gen8_instruction.h
View File

@ -224,8 +224,32 @@ F(cre_message_type, 110, 109)
F(cre_binding_table_index, 103, 96)
/** @} */
/* Addr Mode */
F(dst_addr_mode, 63, 63)
F(src0_addr_mode, 79, 79)
F(src1_addr_mode, 111, 111)
/* Indirect access mode for Align1. */
F(dst_ida1_sub_nr, 60, 57)
F(src0_ida1_sub_nr, 76, 73)
F(src1_ida1_sub_nr, 108, 105)
/* Imm[8:0] of Immediate addr offset under Indirect mode */
F(dst_ida1_imm8, 56, 48)
F(src0_ida1_imm8, 72, 64)
F(src1_ida1_imm8, 104, 96)
/* Imm Bit9 of Immediate addr offset under Indirect mode */
F(dst_ida1_imm9, 47, 47)
F(src0_ida1_imm9, 95, 95)
F(src1_ida1_imm9, 121, 121)
#undef F
#define IMM8_MASK 0x1FF
#define IMM9_MASK 0x200
/**
* Flow control instruction bits:
* @{

12
assembler/gram.y
View File

@ -294,6 +294,12 @@ static bool validate_dst_reg(struct brw_program_instruction *insn, struct brw_re
return false;
}
if (reg->address_mode == BRW_ADDRESS_REGISTER_INDIRECT_REGISTER &&
access_mode(insn) == BRW_ALIGN_16) {
fprintf(stderr, "error: indirect Dst addr mode in align16 instruction\n");
return false;
}
return true;
}
@ -317,6 +323,12 @@ static bool validate_src_reg(struct brw_program_instruction *insn,
return false;
}
if (reg.address_mode == BRW_ADDRESS_REGISTER_INDIRECT_REGISTER &&
access_mode(insn) == BRW_ALIGN_16) {
fprintf(stderr, "error: indirect Source addr mode in align16 instruction\n");
return false;
}
assert(reg.hstride >= 0 && reg.hstride < ARRAY_SIZE(hstride_for_reg));
hstride = hstride_for_reg[reg.hstride];