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

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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15
src/mesa/drivers/dri/i965/brw_vec4.cpp
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@ -1143,15 +1143,12 @@ vec4_visitor::split_virtual_grfs()
* to split.
*/
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
* contiguous.
*/
if (inst->is_send_from_grf()) {
for (int i = 0; i < 3; i++) {
if (inst->src[i].file == GRF) {
split_grf[inst->src[i].reg] = false;
}
}
if (inst->dst.file == GRF && inst->regs_written > 1)
split_grf[inst->dst.reg] = false;
for (int i = 0; i < 3; i++) {
if (inst->src[i].file == GRF && inst->regs_read(i) > 1)
split_grf[inst->src[i].reg] = false;
}
}