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assembler: Factor out the destination register validation

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The goal is to use brw_set_dest(), so let's start by validating the
register we have before generating the opcode.

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
This commit is contained in:
Damien Lespiau 2013-01-24 12:21:13 +00:00
parent 9d5a87a096
commit 5e0da9f854
1 changed files with 19 additions and 12 deletions
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31
assembler/gram.y
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@ -29,6 +29,7 @@
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stdbool.h>
#include <assert.h>
#include "gen4asm.h"
#include "brw_defines.h"
@ -159,6 +160,21 @@ static int resolve_dst_region(struct declared_register *reference, int region)
return resolved;
}
static bool validate_dst_reg(struct brw_instruction *insn, struct brw_reg *reg)
{
if (reg->address_mode == BRW_ADDRESS_DIRECT &&
insn->header.access_mode == BRW_ALIGN_1 &&
reg->dw1.bits.writemask != 0 &&
reg->dw1.bits.writemask != BRW_WRITEMASK_XYZW)
{
fprintf(stderr, "error: write mask set in align1 instruction\n");
return false;
}
return true;
}
%}
%start ROOT
@ -2803,6 +2819,9 @@ static void reset_instruction_src_region(struct brw_instruction *instr,
int set_instruction_dest(struct brw_instruction *instr,
struct brw_reg *dest)
{
if (!validate_dst_reg(instr, dest))
return 1;
if (dest->address_mode == BRW_ADDRESS_DIRECT &&
instr->header.access_mode == BRW_ALIGN_1) {
instr->bits1.da1.dest_reg_file = dest->file;
@ -2811,12 +2830,6 @@ int set_instruction_dest(struct brw_instruction *instr,
instr->bits1.da1.dest_reg_nr = dest->nr;
instr->bits1.da1.dest_horiz_stride = dest->hstride;
instr->bits1.da1.dest_address_mode = dest->address_mode;
if (dest->dw1.bits.writemask != 0 &&
dest->dw1.bits.writemask != BRW_WRITEMASK_XYZW) {
fprintf(stderr, "error: write mask set in align1 "
"instruction\n");
return 1;
}
} else if (dest->address_mode == BRW_ADDRESS_DIRECT) {
instr->bits1.da16.dest_reg_file = dest->file;
instr->bits1.da16.dest_reg_type = dest->type;
@ -2832,12 +2845,6 @@ int set_instruction_dest(struct brw_instruction *instr,
instr->bits1.ia1.dest_horiz_stride = dest->hstride;
instr->bits1.ia1.dest_indirect_offset = dest->dw1.bits.indirect_offset;
instr->bits1.ia1.dest_address_mode = dest->address_mode;
if (dest->dw1.bits.writemask != 0 &&
dest->dw1.bits.writemask != BRW_WRITEMASK_XYZW) {
fprintf(stderr, "error: write mask set in align1 "
"instruction\n");
return 1;
}
} else {
instr->bits1.ia16.dest_reg_file = dest->file;
instr->bits1.ia16.dest_reg_type = dest->type;