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tgsi_exec: Drop unused destination dimension support.

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As you can see, nothing used the index2d value we computed.  Turns out
this does remove some unused code from release builds.

Reviewed-by: Adam Jackson <ajax@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10605>
This commit is contained in:
Eric Anholt
2021-05-03 21:07:53 -07:00
committed by Marge Bot
parent 31369987ff
commit 367729a732
1 changed files with 0 additions and 72 deletions
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src/gallium/auxiliary/tgsi/tgsi_exec.c
-72
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@@ -1734,7 +1734,6 @@ store_dest_dstret(struct tgsi_exec_machine *mach,
{
static union tgsi_exec_channel null;
union tgsi_exec_channel *dst;
union tgsi_exec_channel index2D;
int offset = 0; /* indirection offset */
int index;
@@ -1775,77 +1774,6 @@ store_dest_dstret(struct tgsi_exec_machine *mach,
offset = indir_index.i[0];
}
/* There is an extra source register that is a second
* subscript to a register file. Effectively it means that
* the register file is actually a 2D array of registers.
*
* file[3][1],
* where:
* [3] = Dimension.Index
*/
if (reg->Register.Dimension) {
index2D.i[0] =
index2D.i[1] =
index2D.i[2] =
index2D.i[3] = reg->Dimension.Index;
/* Again, the second subscript index can be addressed indirectly
* identically to the first one.
* Nothing stops us from indirectly addressing the indirect register,
* but there is no need for that, so we won't exercise it.
*
* file[ind[4].y+3][1],
* where:
* ind = DimIndirect.File
* [4] = DimIndirect.Index
* .y = DimIndirect.SwizzleX
*/
if (reg->Dimension.Indirect) {
union tgsi_exec_channel index2;
union tgsi_exec_channel indir_index;
const uint execmask = mach->ExecMask;
unsigned swizzle;
uint i;
index2.i[0] =
index2.i[1] =
index2.i[2] =
index2.i[3] = reg->DimIndirect.Index;
swizzle = reg->DimIndirect.Swizzle;
fetch_src_file_channel(mach,
reg->DimIndirect.File,
swizzle,
&index2,
&ZeroVec,
&indir_index);
index2D.i[0] += indir_index.i[0];
index2D.i[1] += indir_index.i[1];
index2D.i[2] += indir_index.i[2];
index2D.i[3] += indir_index.i[3];
/* for disabled execution channels, zero-out the index to
* avoid using a potential garbage value.
*/
for (i = 0; i < TGSI_QUAD_SIZE; i++) {
if ((execmask & (1 << i)) == 0) {
index2D.i[i] = 0;
}
}
}
/* If by any chance there was a need for a 3D array of register
* files, we would have to check whether Dimension is followed
* by a dimension register and continue the saga.
*/
} else {
index2D.i[0] =
index2D.i[1] =
index2D.i[2] =
index2D.i[3] = 0;
}
switch (reg->Register.File) {
case TGSI_FILE_NULL:
dst = &null;