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i965/vec4: Simplify src/dst_reg to brw_reg conversion by using byte_offset().

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This should also have the side effect of fixing convert_to_hw_regs()
to handle sub-GRF register offsets.

Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
This commit is contained in:
Francisco Jerez
2016-09-08 18:00:11 -07:00
parent eb746a80e5
commit 230615e228
1 changed files with 8 additions and 7 deletions
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src/mesa/drivers/dri/i965/brw_vec4.cpp
+8 -7
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@@ -1851,7 +1851,7 @@ vec4_visitor::convert_to_hw_regs()
struct brw_reg reg;
switch (src.file) {
case VGRF:
reg = brw_vec8_grf(src.nr + src.offset / REG_SIZE, 0);
reg = byte_offset(brw_vec8_grf(src.nr, 0), src.offset);
reg.type = src.type;
reg.swizzle = src.swizzle;
reg.abs = src.abs;
@@ -1859,9 +1859,10 @@ vec4_visitor::convert_to_hw_regs()
break;
case UNIFORM:
reg = stride(brw_vec4_grf(prog_data->base.dispatch_grf_start_reg +
(src.nr + src.offset / 16) / 2,
((src.nr + src.offset / 16) % 2) * 4),
reg = stride(byte_offset(brw_vec4_grf(
prog_data->base.dispatch_grf_start_reg +
src.nr / 2, src.nr % 2 * 4),
src.offset),
0, 4, 1);
reg.type = src.type;
reg.swizzle = src.swizzle;
@@ -1907,14 +1908,14 @@ vec4_visitor::convert_to_hw_regs()
switch (inst->dst.file) {
case VGRF:
reg = brw_vec8_grf(dst.nr + dst.offset / REG_SIZE, 0);
reg = byte_offset(brw_vec8_grf(dst.nr, 0), dst.offset);
reg.type = dst.type;
reg.writemask = dst.writemask;
break;
case MRF:
assert(((dst.nr + dst.offset / REG_SIZE) & ~BRW_MRF_COMPR4) < BRW_MAX_MRF(devinfo->gen));
reg = brw_message_reg(dst.nr + dst.offset / REG_SIZE);
reg = byte_offset(brw_message_reg(dst.nr), dst.offset);
assert((reg.nr & ~BRW_MRF_COMPR4) < BRW_MAX_MRF(devinfo->gen));
reg.type = dst.type;
reg.writemask = dst.writemask;
break;