[llvm] [Offload] Make olMemcpy src parameter const (PR #143161)

[Callum Fare via llvm-commits]

https://github.com/callumfare created https://github.com/llvm/llvm-project/pull/143161

None

>From 1dffe0eebc1baa6dd7b946cb712af8cee25fd6ca Mon Sep 17 00:00:00 2001
From: Callum Fare <callum at codeplay.com>
Date: Fri, 6 Jun 2025 16:20:49 +0100
Subject: [PATCH] [Offload] Make olMemcpy src parameter const

---
 offload/liboffload/API/Memory.td       | 2 +-
 offload/liboffload/src/OffloadImpl.cpp | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/offload/liboffload/API/Memory.td b/offload/liboffload/API/Memory.td
index 9cd1ef6362e15..029975c448295 100644
--- a/offload/liboffload/API/Memory.td
+++ b/offload/liboffload/API/Memory.td
@@ -57,7 +57,7 @@ def : Function {
         Param<"ol_queue_handle_t", "Queue", "handle of the queue.", PARAM_IN_OPTIONAL>,
         Param<"void*", "DstPtr", "pointer to copy to", PARAM_IN>,
         Param<"ol_device_handle_t", "DstDevice", "device that DstPtr belongs to", PARAM_IN>,
-        Param<"void*", "SrcPtr", "pointer to copy from", PARAM_IN>,
+        Param<"const void*", "SrcPtr", "pointer to copy from", PARAM_IN>,
         Param<"ol_device_handle_t", "SrcDevice", "device that SrcPtr belongs to", PARAM_IN>,
         Param<"size_t", "Size", "size in bytes of data to copy", PARAM_IN>,
         Param<"ol_event_handle_t*", "EventOut", "optional recorded event for the enqueued operation", PARAM_OUT_OPTIONAL>
diff --git a/offload/liboffload/src/OffloadImpl.cpp b/offload/liboffload/src/OffloadImpl.cpp
index 7b67cbba43e68..d2b331905ab77 100644
--- a/offload/liboffload/src/OffloadImpl.cpp
+++ b/offload/liboffload/src/OffloadImpl.cpp
@@ -399,7 +399,7 @@ ol_event_handle_t makeEvent(ol_queue_handle_t Queue) {
 }
 
 Error olMemcpy_impl(ol_queue_handle_t Queue, void *DstPtr,
-                    ol_device_handle_t DstDevice, void *SrcPtr,
+                    ol_device_handle_t DstDevice, const void *SrcPtr,
                     ol_device_handle_t SrcDevice, size_t Size,
                     ol_event_handle_t *EventOut) {
   if (DstDevice == HostDevice() && SrcDevice == HostDevice()) {