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tgsi: Remove unused tgsi_check_soa_dependencies().

Browse source 
Acked-by: Eric Engestrom <eric@engestrom.ch>
Reviewed-By: Gert Wollny <gert.wollny@collabora.com>
This commit is contained in:
Eric Anholt 2019-08-07 11:50:07 -07:00
parent 4ebe6b2e72
commit c1dc84e71d
2 changed files with 0 additions and 59 deletions
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55
src/gallium/auxiliary/tgsi/tgsi_exec.c
View file

@ -1066,61 +1066,6 @@ tgsi_exec_set_constant_buffers(struct tgsi_exec_machine *mach,
}
}
/**
* Check if there's a potential src/dst register data dependency when
* using SOA execution.
* Example:
* MOV T, T.yxwz;
* This would expand into:
* MOV t0, t1;
* MOV t1, t0;
* MOV t2, t3;
* MOV t3, t2;
* The second instruction will have the wrong value for t0 if executed as-is.
*/
boolean
tgsi_check_soa_dependencies(const struct tgsi_full_instruction *inst)
{
uint i, chan;
uint writemask = inst->Dst[0].Register.WriteMask;
if (writemask == TGSI_WRITEMASK_X ||
writemask == TGSI_WRITEMASK_Y ||
writemask == TGSI_WRITEMASK_Z ||
writemask == TGSI_WRITEMASK_W ||
writemask == TGSI_WRITEMASK_NONE) {
/* no chance of data dependency */
return FALSE;
}
/* loop over src regs */
for (i = 0; i < inst->Instruction.NumSrcRegs; i++) {
if ((inst->Src[i].Register.File ==
inst->Dst[0].Register.File) &&
((inst->Src[i].Register.Index ==
inst->Dst[0].Register.Index) ||
inst->Src[i].Register.Indirect ||
inst->Dst[0].Register.Indirect)) {
/* loop over dest channels */
uint channelsWritten = 0x0;
for (chan = 0; chan < TGSI_NUM_CHANNELS; chan++) {
if (inst->Dst[0].Register.WriteMask & (1 << chan)) {
/* check if we're reading a channel that's been written */
uint swizzle = tgsi_util_get_full_src_register_swizzle(&inst->Src[i], chan);
if (channelsWritten & (1 << swizzle)) {
return TRUE;
}
channelsWritten |= (1 << chan);
}
}
}
}
return FALSE;
}
/**
* Initialize machine state by expanding tokens to full instructions,
* allocating temporary storage, setting up constants, etc.

4
src/gallium/auxiliary/tgsi/tgsi_exec.h
View file

@ -467,10 +467,6 @@ void
tgsi_exec_machine_free_data(struct tgsi_exec_machine *mach);
boolean
tgsi_check_soa_dependencies(const struct tgsi_full_instruction *inst);
extern void
tgsi_exec_set_constant_buffers(struct tgsi_exec_machine *mach,
unsigned num_bufs,