From: Vadim Girlin <vadimgirlin@gmail.com>
Date: Wed, 10 Dec 2014 11:41:10 +0000 (+0300)
Subject: r600g/sb: fix issues with loops created for switch
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=de0fd375f6de8f3357d05decc4a7dc231c679645;p=mesa.git

r600g/sb: fix issues with loops created for switch

Signed-off-by: Dave Airlie <airlied@redhat.com>
---

diff --git a/src/gallium/drivers/r600/sb/sb_bc_finalize.cpp b/src/gallium/drivers/r600/sb/sb_bc_finalize.cpp
index f0849ca6b6b..3f362c4d787 100644
--- a/src/gallium/drivers/r600/sb/sb_bc_finalize.cpp
+++ b/src/gallium/drivers/r600/sb/sb_bc_finalize.cpp
@@ -110,6 +110,8 @@ int bc_finalizer::run() {
 
 void bc_finalizer::finalize_loop(region_node* r) {
 
+	update_nstack(r);
+
 	cf_node *loop_start = sh.create_cf(CF_OP_LOOP_START_DX10);
 	cf_node *loop_end = sh.create_cf(CF_OP_LOOP_END);
 
diff --git a/src/gallium/drivers/r600/sb/sb_bc_parser.cpp b/src/gallium/drivers/r600/sb/sb_bc_parser.cpp
index d787e5b1238..403f938092e 100644
--- a/src/gallium/drivers/r600/sb/sb_bc_parser.cpp
+++ b/src/gallium/drivers/r600/sb/sb_bc_parser.cpp
@@ -758,6 +758,8 @@ int bc_parser::prepare_loop(cf_node* c) {
 	c->insert_before(reg);
 	rep->move(c, end->next);
 
+	reg->src_loop = true;
+
 	loop_stack.push(reg);
 	return 0;
 }
diff --git a/src/gallium/drivers/r600/sb/sb_if_conversion.cpp b/src/gallium/drivers/r600/sb/sb_if_conversion.cpp
index 93edacec7af..3f2b1b1b925 100644
--- a/src/gallium/drivers/r600/sb/sb_if_conversion.cpp
+++ b/src/gallium/drivers/r600/sb/sb_if_conversion.cpp
@@ -115,13 +115,13 @@ void if_conversion::convert_kill_instructions(region_node *r,
 bool if_conversion::check_and_convert(region_node *r) {
 
 	depart_node *nd1 = static_cast<depart_node*>(r->first);
-	if (!nd1->is_depart())
+	if (!nd1->is_depart() || nd1->target != r)
 		return false;
 	if_node *nif = static_cast<if_node*>(nd1->first);
 	if (!nif->is_if())
 		return false;
 	depart_node *nd2 = static_cast<depart_node*>(nif->first);
-	if (!nd2->is_depart())
+	if (!nd2->is_depart() || nd2->target != r)
 		return false;
 
 	value* &em = nif->cond;
diff --git a/src/gallium/drivers/r600/sb/sb_ir.h b/src/gallium/drivers/r600/sb/sb_ir.h
index 85c3d06ea7f..711c2eb9e35 100644
--- a/src/gallium/drivers/r600/sb/sb_ir.h
+++ b/src/gallium/drivers/r600/sb/sb_ir.h
@@ -1089,7 +1089,8 @@ typedef std::vector<repeat_node*> repeat_vec;
 class region_node : public container_node {
 protected:
 	region_node(unsigned id) : container_node(NT_REGION, NST_LIST), region_id(id),
-			loop_phi(), phi(), vars_defined(), departs(), repeats() {}
+			loop_phi(), phi(), vars_defined(), departs(), repeats(), src_loop()
+			{}
 public:
 	unsigned region_id;
 
@@ -1101,12 +1102,16 @@ public:
 	depart_vec departs;
 	repeat_vec repeats;
 
+	// true if region was created for loop in the parser, sometimes repeat_node
+	// may be optimized away so we need to remember this information
+	bool src_loop;
+
 	virtual bool accept(vpass &p, bool enter);
 
 	unsigned dep_count() { return departs.size(); }
 	unsigned rep_count() { return repeats.size() + 1; }
 
-	bool is_loop() { return !repeats.empty(); }
+	bool is_loop() { return src_loop || !repeats.empty(); }
 
 	container_node* get_entry_code_location() {
 		node *p = first;
diff --git a/src/gallium/drivers/r600/sb/sb_sched.cpp b/src/gallium/drivers/r600/sb/sb_sched.cpp
index 14139161755..4fbdc4fd971 100644
--- a/src/gallium/drivers/r600/sb/sb_sched.cpp
+++ b/src/gallium/drivers/r600/sb/sb_sched.cpp
@@ -1527,6 +1527,9 @@ bool post_scheduler::check_copy(node *n) {
 
 	if (!s->is_prealloc()) {
 		recolor_local(s);
+
+		if (!s->chunk || s->chunk != d->chunk)
+			return false;
 	}
 
 	if (s->gpr == d->gpr) {