gpu-compute: parametrize Wavefront size

Eliminate the VSZ constant that defined the Wavefront size (in numbers of work
items); replaced it with a parameter in the GPU.py configuration script.
Changed all data structures dependent on the Wavefront size to be dynamically
sized. Legal values of Wavefront size are 16, 32, 64 for now and checked at
initialization time.

1 files changed, 2 insertions, 16 deletions

diff --git a/src/gpu-compute/compute_unit.hh b/src/gpu-compute/compute_unit.hh
index f47c27a0a..a234cbeb5 100644
--- a/src/gpu-compute/compute_unit.hh
+++ b/src/gpu-compute/compute_unit.hh
@@ -161,22 +161,8 @@ class ComputeUnit : public MemObject
     // if fixed-stride prefetching, this is the stride.
     int prefetchStride;
 
-    class LastVaddrWave
-    {
-      public:
-        Addr vaddrs[VSZ];
-        Addr& operator[](int idx) {
-            return vaddrs[idx];
-        }
-
-        LastVaddrWave() {
-            for (int i = 0; i < VSZ; ++i)
-                vaddrs[i] = 0;
-        }
-    };
-
-    LastVaddrWave lastVaddrCU;
-    std::vector<LastVaddrWave> lastVaddrPhase;
+    std::vector<Addr> lastVaddrCU;
+    std::vector<std::vector<Addr>> lastVaddrSimd;
     std::vector<std::vector<std::vector<Addr>>> lastVaddrWF;
     Enums::PrefetchType prefetchType;
     EXEC_POLICY exec_policy;