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i965/vec4: Fix handling of multiple register reads and writes in split_virtual_grfs().

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Reviewed-by: Matt Turner <mattst88@gmail.com>
This commit is contained in:
Francisco Jerez 2015-03-18 19:45:40 +02:00
parent 9304f60cbe
commit 588859e18c
1 changed files with 6 additions and 9 deletions
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11
src/mesa/drivers/dri/i965/brw_vec4.cpp
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@ -1143,17 +1143,14 @@ vec4_visitor::split_virtual_grfs()
* to split. * to split.
*/ */
foreach_block_and_inst(block, vec4_instruction, inst, cfg) { foreach_block_and_inst(block, vec4_instruction, inst, cfg) {
/* If there's a SEND message loading from a GRF on gen7+, it needs to be if (inst->dst.file == GRF && inst->regs_written > 1)
* contiguous. split_grf[inst->dst.reg] = false;
*/
if (inst->is_send_from_grf()) {
for (int i = 0; i < 3; i++) { for (int i = 0; i < 3; i++) {
if (inst->src[i].file == GRF) { if (inst->src[i].file == GRF && inst->regs_read(i) > 1)
split_grf[inst->src[i].reg] = false; split_grf[inst->src[i].reg] = false;
} }
} }
}
}
/* Allocate new space for split regs. Note that the virtual /* Allocate new space for split regs. Note that the virtual
* numbers will be contiguous. * numbers will be contiguous.