From: Christian König <deathsimple@vodafone.de>
Date: Sat, 18 Dec 2010 20:32:16 +0000 (+0100)
Subject: r600g: implement replacing gpr with pv and ps
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=7b0cc9bd386f62f58c39e66ce29f1423cfccdfb7;p=mesa.git

r600g: implement replacing gpr with pv and ps
---

diff --git a/src/gallium/drivers/r600/r600_asm.c b/src/gallium/drivers/r600/r600_asm.c
index 82911e92418..c0501f5018d 100644
--- a/src/gallium/drivers/r600/r600_asm.c
+++ b/src/gallium/drivers/r600/r600_asm.c
@@ -107,7 +107,6 @@ static struct r600_bc_alu *r600_bc_alu(void)
 	if (alu == NULL)
 		return NULL;
 	LIST_INITHEAD(&alu->list);
-	LIST_INITHEAD(&alu->bs_list);
 	return alu;
 }
 
@@ -551,6 +550,63 @@ static int check_and_set_bank_swizzle(struct r600_bc *bc, struct r600_bc_alu *al
 	return -1;
 }
 
+static int replace_gpr_with_pv_ps(struct r600_bc_alu *alu_first, struct r600_bc_alu *alu_prev)
+{
+	struct r600_bc_alu *slots[5];
+	int gpr[5], chan[5];
+	int i, j, r, src, num_src;
+	
+	r = assign_alu_units(alu_prev, slots);
+	if (r)
+		return r;
+
+	for (i = 0; i < 5; ++i) {
+		if(slots[i] && slots[i]->dst.write && !slots[i]->dst.rel) {
+			gpr[i] = slots[i]->dst.sel;
+			if (is_alu_reduction_inst(slots[i]))
+				chan[i] = 0;
+			else
+				chan[i] = slots[i]->dst.chan;
+		} else
+			gpr[i] = -1;
+		
+	}
+
+	r = assign_alu_units(alu_first, slots);
+	if (r)
+		return r;
+
+	for (i = 0; i < 5; ++i) {
+		struct r600_bc_alu *alu = slots[i];
+		if(!alu)
+			continue;
+
+		num_src = r600_bc_get_num_operands(alu);
+		for (src = 0; src < num_src; ++src) {
+			if (!is_gpr(alu->src[src].sel) || alu->src[src].rel)
+				continue;
+
+			if (alu->src[src].sel == gpr[4] &&
+				alu->src[src].chan == chan[4]) {
+				alu->src[src].sel = V_SQ_ALU_SRC_PS;
+				alu->src[src].chan = 0;
+				continue;
+			}
+
+			for (j = 0; j < 4; ++j) {
+				if (alu->src[src].sel == gpr[j] &&
+					alu->src[src].chan == j) {
+					alu->src[src].sel = V_SQ_ALU_SRC_PV;
+					alu->src[src].chan = chan[j];
+					break;
+				}
+			}
+		}
+	}
+
+	return 0;
+}
+
 int r600_bc_add_alu_type(struct r600_bc *bc, const struct r600_bc_alu *alu, int type)
 {
 	struct r600_bc_alu *nalu = r600_bc_alu();
@@ -587,9 +643,6 @@ int r600_bc_add_alu_type(struct r600_bc *bc, const struct r600_bc_alu *alu, int
 	bc->cf_last->inst = (type << 3);
 	if (!bc->cf_last->curr_bs_head) {
 		bc->cf_last->curr_bs_head = nalu;
-		LIST_INITHEAD(&nalu->bs_list);
-	} else {
-		LIST_ADDTAIL(&nalu->bs_list, &bc->cf_last->curr_bs_head->bs_list);
 	}
 	/* at most 128 slots, one add alu can add 4 slots + 4 constants(2 slots)
 	 * worst case */
@@ -628,9 +681,12 @@ int r600_bc_add_alu_type(struct r600_bc *bc, const struct r600_bc_alu *alu, int
 
 	/* process cur ALU instructions for bank swizzle */
 	if (alu->last) {
+		if (bc->cf_last->prev_bs_head)
+			replace_gpr_with_pv_ps(bc->cf_last->curr_bs_head, bc->cf_last->prev_bs_head);
 		r = check_and_set_bank_swizzle(bc, bc->cf_last->curr_bs_head);
 		if (r)
 			return r;
+		bc->cf_last->prev_bs_head = bc->cf_last->curr_bs_head;
 		bc->cf_last->curr_bs_head = NULL;
 	}
 	return 0;
diff --git a/src/gallium/drivers/r600/r600_asm.h b/src/gallium/drivers/r600/r600_asm.h
index fc60079c3e0..94ba902fb5b 100644
--- a/src/gallium/drivers/r600/r600_asm.h
+++ b/src/gallium/drivers/r600/r600_asm.h
@@ -46,7 +46,6 @@ struct r600_bc_alu_dst {
 
 struct r600_bc_alu {
 	struct list_head		list;
-	struct list_head		bs_list; /* bank swizzle list */
 	struct r600_bc_alu_src		src[3];
 	struct r600_bc_alu_dst		dst;
 	unsigned			inst;
@@ -143,6 +142,7 @@ struct r600_bc_cf {
 	struct list_head		vtx;
 	struct r600_bc_output		output;
 	struct r600_bc_alu		*curr_bs_head;
+	struct r600_bc_alu		*prev_bs_head;
 };
 
 #define FC_NONE				0
diff --git a/src/gallium/drivers/r600/r600_sq.h b/src/gallium/drivers/r600/r600_sq.h
index 0573e63dc82..2401d47e2a2 100644
--- a/src/gallium/drivers/r600/r600_sq.h
+++ b/src/gallium/drivers/r600/r600_sq.h
@@ -187,6 +187,8 @@
 #define     V_SQ_ALU_SRC_M_1_INT                                     0x000000FB
 #define     V_SQ_ALU_SRC_0_5                                         0x000000FC
 #define     V_SQ_ALU_SRC_LITERAL                                     0x000000FD
+#define     V_SQ_ALU_SRC_PV                                          0x000000FE
+#define     V_SQ_ALU_SRC_PS                                          0x000000FF
 #define     V_SQ_ALU_SRC_PARAM_BASE                                  0x000001C0
 #define   S_SQ_ALU_WORD0_SRC0_REL(x)                                 (((x) & 0x1) << 9)
 #define   G_SQ_ALU_WORD0_SRC0_REL(x)                                 (((x) >> 9) & 0x1)