gpu-compute, mem-ruby, configs: Add GCN3 ISA support to GPU model

Change-Id: Ibe46970f3ba25d62ca2ade5cbc2054ad746b2254
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/29912
Reviewed-by: Anthony Gutierrez <anthony.gutierrez@amd.com>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Anthony Gutierrez <anthony.gutierrez@amd.com>
Tested-by: kokoro <noreply+kokoro@google.com>

src/gpu-compute/simple_pool_manager.cc

@@ -35,6 +35,12 @@
 
 #include "base/logging.hh"
 
+SimplePoolManager *
+SimplePoolManagerParams::create()
+{
+    return new SimplePoolManager(this);
+}
+
 // return the min number of elements that the manager can reserve given
 // a request for "size" elements
 uint32_t
@@ -64,8 +70,6 @@ SimplePoolManager::printRegion()
 bool
 SimplePoolManager::canAllocate(uint32_t numRegions, uint32_t size)
 {
-    assert(numRegions * minAllocatedElements(size) <= poolSize());
-
     return _reservedGroups == 0;
 }