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i965/fs: Simplify byte_offset().

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In the most common case this can now be implemented as a simple
addition because the offset is already encoded as a single scalar
value in bytes.

Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
This commit is contained in:
Francisco Jerez
2016-09-01 19:27:12 -07:00
parent bae3a41171
commit ee930c0435
1 changed files with 4 additions and 8 deletions
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src/mesa/drivers/dri/i965/brw_ir_fs.h
+4 -8
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@@ -79,17 +79,13 @@ byte_offset(fs_reg reg, unsigned delta)
break;
case VGRF:
case ATTR:
case UNIFORM: {
const unsigned reg_size = (reg.file == UNIFORM ? 4 : REG_SIZE);
const unsigned suboffset = reg.offset % reg_size + delta;
reg.offset += ROUND_DOWN_TO(suboffset, reg_size);
reg.offset = ROUND_DOWN_TO(reg.offset, reg_size) + suboffset % reg_size;
case UNIFORM:
reg.offset += delta;
break;
}
case MRF: {
const unsigned suboffset = reg.offset % REG_SIZE + delta;
const unsigned suboffset = reg.offset + delta;
reg.nr += suboffset / REG_SIZE;
reg.offset = ROUND_DOWN_TO(reg.offset, REG_SIZE) + suboffset % REG_SIZE;
reg.offset = suboffset % REG_SIZE;
break;
}
case ARF: