diff options
Diffstat (limited to 'src/gallium/drivers/vc4')
| -rw-r--r-- | src/gallium/drivers/vc4/vc4_opt_cse.c | 3 | ||||
| -rw-r--r-- | src/gallium/drivers/vc4/vc4_opt_dead_code.c | 3 | ||||
| -rw-r--r-- | src/gallium/drivers/vc4/vc4_opt_vpm_writes.c | 4 | ||||
| -rw-r--r-- | src/gallium/drivers/vc4/vc4_qir.c | 8 | ||||
| -rw-r--r-- | src/gallium/drivers/vc4/vc4_qir.h | 1 |
5 files changed, 15 insertions, 4 deletions
diff --git a/src/gallium/drivers/vc4/vc4_opt_cse.c b/src/gallium/drivers/vc4/vc4_opt_cse.c index 2ca736fe4d5..aff777beb47 100644 --- a/src/gallium/drivers/vc4/vc4_opt_cse.c +++ b/src/gallium/drivers/vc4/vc4_opt_cse.c @@ -133,7 +133,8 @@ qir_opt_cse(struct vc4_compile *c) foreach_s(node, t, &c->instructions) { struct qinst *inst = (struct qinst *)node; - if (qir_has_side_effects(c, inst)) { + if (qir_has_side_effects(c, inst) || + qir_has_side_effect_reads(c, inst)) { if (inst->op == QOP_TLB_DISCARD_SETUP) last_sf = NULL; continue; diff --git a/src/gallium/drivers/vc4/vc4_opt_dead_code.c b/src/gallium/drivers/vc4/vc4_opt_dead_code.c index 408bd4302b4..f555fcb600e 100644 --- a/src/gallium/drivers/vc4/vc4_opt_dead_code.c +++ b/src/gallium/drivers/vc4/vc4_opt_dead_code.c @@ -64,7 +64,8 @@ qir_opt_dead_code(struct vc4_compile *c) if (inst->dst.file == QFILE_TEMP && !used[inst->dst.index] && (!qir_has_side_effects(c, inst) || - inst->op == QOP_TEX_RESULT)) { + inst->op == QOP_TEX_RESULT) && + !(qir_has_side_effect_reads(c, inst))) { if (inst->op == QOP_TEX_RESULT) { dce_tex = true; c->num_texture_samples--; diff --git a/src/gallium/drivers/vc4/vc4_opt_vpm_writes.c b/src/gallium/drivers/vc4/vc4_opt_vpm_writes.c index 477d32605a4..0269e32494a 100644 --- a/src/gallium/drivers/vc4/vc4_opt_vpm_writes.c +++ b/src/gallium/drivers/vc4/vc4_opt_vpm_writes.c @@ -82,8 +82,10 @@ qir_opt_vpm_writes(struct vc4_compile *c) if (qir_depends_on_flags(inst)) continue; - if (qir_has_side_effects(c, inst)) + if (qir_has_side_effects(c, inst) || + qir_has_side_effect_reads(c, inst)) { continue; + } /* A QOP_TEX_RESULT destination is r4, so we can't move * accesses to it past another QOP_TEX_RESULT which would diff --git a/src/gallium/drivers/vc4/vc4_qir.c b/src/gallium/drivers/vc4/vc4_qir.c index 4f73932e233..40356c99ff3 100644 --- a/src/gallium/drivers/vc4/vc4_qir.c +++ b/src/gallium/drivers/vc4/vc4_qir.c @@ -141,6 +141,12 @@ qir_get_op_nsrc(enum qop qop) bool qir_has_side_effects(struct vc4_compile *c, struct qinst *inst) { + return qir_op_info[inst->op].has_side_effects; +} + +bool +qir_has_side_effect_reads(struct vc4_compile *c, struct qinst *inst) +{ /* We can dead-code eliminate varyings, because we only tell the VS * about the live ones at the end. But we have to preserve the * point/line coordinates reads, because they're generated by @@ -159,7 +165,7 @@ qir_has_side_effects(struct vc4_compile *c, struct qinst *inst) if (inst->dst.file == QFILE_VPM) return true; - return qir_op_info[inst->op].has_side_effects; + return false; } bool diff --git a/src/gallium/drivers/vc4/vc4_qir.h b/src/gallium/drivers/vc4/vc4_qir.h index 0c2bca93d8b..ebec7ccfbe3 100644 --- a/src/gallium/drivers/vc4/vc4_qir.h +++ b/src/gallium/drivers/vc4/vc4_qir.h @@ -377,6 +377,7 @@ struct qreg qir_get_temp(struct vc4_compile *c); int qir_get_op_nsrc(enum qop qop); bool qir_reg_equals(struct qreg a, struct qreg b); bool qir_has_side_effects(struct vc4_compile *c, struct qinst *inst); +bool qir_has_side_effect_reads(struct vc4_compile *c, struct qinst *inst); bool qir_is_multi_instruction(struct qinst *inst); bool qir_depends_on_flags(struct qinst *inst); bool qir_writes_r4(struct qinst *inst); |