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vc4: Also deal with VPM reads at thread end. 

Prevents a regression with QPU scheduling, which happens to put the no-op
reads for unused VPM contents end up at the end of the program.
This commit is contained in:
Eric Anholt 2014-11-30 15:13:40 -08:00
parent a7b1a93137
commit 334036fb64
1 changed files with 6 additions and 2 deletions
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8
src/gallium/drivers/vc4/vc4_qpu_emit.c
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@ -596,11 +596,15 @@ vc4_generate_code(struct vc4_context *vc4, struct vc4_compile *c)
serialize_insts(c);
/* thread end can't have VPM write */
/* thread end can't have VPM write or read */
if (QPU_GET_FIELD(c->qpu_insts[c->qpu_inst_count - 1],
QPU_WADDR_ADD) == QPU_W_VPM ||
QPU_GET_FIELD(c->qpu_insts[c->qpu_inst_count - 1],
QPU_WADDR_MUL) == QPU_W_VPM) {
QPU_WADDR_MUL) == QPU_W_VPM ||
QPU_GET_FIELD(c->qpu_insts[c->qpu_inst_count - 1],
QPU_RADDR_A) == QPU_R_VPM ||
QPU_GET_FIELD(c->qpu_insts[c->qpu_inst_count - 1],
QPU_RADDR_B) == QPU_R_VPM) {
serialize_one_inst(c, qpu_NOP());
}