From 28bb1b3ff6f7bafb685df07a818d963a50fd48c5 Mon Sep 17 00:00:00 2001
From: Iago Toral Quiroga <itoral@igalia.com>
Date: Wed, 6 Oct 2021 13:58:00 +0200
Subject: [PATCH] broadcom/compiler: add a v3d71_qpu_writes_waddr_explicitly
 helper
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Reviewed-by: Alejandro Piñeiro <apinheiro@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/25450>
---
 src/broadcom/qpu/qpu_instr.c | 28 ++++++++++++++++++++++++++++
 src/broadcom/qpu/qpu_instr.h |  3 +++
 2 files changed, 31 insertions(+)

diff --git a/src/broadcom/qpu/qpu_instr.c b/src/broadcom/qpu/qpu_instr.c
index e8bbb2141b0..feb6b343c1c 100644
--- a/src/broadcom/qpu/qpu_instr.c
+++ b/src/broadcom/qpu/qpu_instr.c
@@ -968,6 +968,34 @@ v3d71_qpu_reads_raddr(const struct v3d_qpu_instr *inst, uint8_t raddr)
                (mul_nsrc > 1 && inst->alu.mul.b.raddr == raddr);
 }
 
+bool
+v3d71_qpu_writes_waddr_explicitly(const struct v3d_device_info *devinfo,
+                                  const struct v3d_qpu_instr *inst,
+                                  uint8_t waddr)
+{
+        if (inst->type != V3D_QPU_INSTR_TYPE_ALU)
+                return false;
+
+        if (v3d_qpu_add_op_has_dst(inst->alu.add.op) &&
+            !inst->alu.add.magic_write &&
+            inst->alu.add.waddr == waddr) {
+                return true;
+        }
+
+        if (v3d_qpu_mul_op_has_dst(inst->alu.mul.op) &&
+            !inst->alu.mul.magic_write &&
+            inst->alu.mul.waddr == waddr) {
+                return true;
+        }
+
+        if (v3d_qpu_sig_writes_address(devinfo, &inst->sig) &&
+            !inst->sig_magic && inst->sig_addr == waddr) {
+                return true;
+        }
+
+        return false;
+}
+
 bool
 v3d_qpu_sig_writes_address(const struct v3d_device_info *devinfo,
                            const struct v3d_qpu_sig *sig)
diff --git a/src/broadcom/qpu/qpu_instr.h b/src/broadcom/qpu/qpu_instr.h
index 9f7582ab06d..50a69ce8c3a 100644
--- a/src/broadcom/qpu/qpu_instr.h
+++ b/src/broadcom/qpu/qpu_instr.h
@@ -496,4 +496,7 @@ bool v3d_qpu_unpacks_f16(const struct v3d_qpu_instr *inst) ATTRIBUTE_CONST;
 bool v3d_qpu_is_nop(struct v3d_qpu_instr *inst) ATTRIBUTE_CONST;
 
 bool v3d71_qpu_reads_raddr(const struct v3d_qpu_instr *inst, uint8_t raddr);
+bool v3d71_qpu_writes_waddr_explicitly(const struct v3d_device_info *devinfo,
+                                       const struct v3d_qpu_instr *inst,
+                                       uint8_t waddr);
 #endif