From 7a47f9cd62902d960a989a920d882f3b77fe7b2a Mon Sep 17 00:00:00 2001
From: Tor Aamodt <aamodt@ece.ubc.ca>
Date: Mon, 29 Nov 2010 19:53:45 -0800
Subject: make an explicit read operands stage

[git-p4: depot-paths = "//depot/gpgpu_sim_research/fermi/distribution/": change = 8174]
---
 src/gpgpu-sim/shader.cc | 7 ++++++-
 src/gpgpu-sim/shader.h  | 2 ++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/gpgpu-sim/shader.cc b/src/gpgpu-sim/shader.cc
index 10845e5..169adbe 100644
--- a/src/gpgpu-sim/shader.cc
+++ b/src/gpgpu-sim/shader.cc
@@ -692,6 +692,11 @@ void shader_core_ctx::decode()
         m_stats->shader_cycle_distro[2]++; // pipeline stalled
 }
 
+void shader_core_ctx::read_operands()
+{
+    m_operand_collector.step();
+}
+
 address_type coalesced_segment(address_type addr, unsigned segment_size_lg2bytes)
 {
    return  (addr >> segment_size_lg2bytes);
@@ -1470,7 +1475,7 @@ void shader_core_ctx::cycle()
 {
     writeback();
     execute();
-    m_operand_collector.step();
+    read_operands();
     decode();
     fetch();
 }
diff --git a/src/gpgpu-sim/shader.h b/src/gpgpu-sim/shader.h
index e015b11..c312d62 100644
--- a/src/gpgpu-sim/shader.h
+++ b/src/gpgpu-sim/shader.h
@@ -1168,6 +1168,8 @@ private:
     void issue_warp( warp_inst_t *&warp, const warp_inst_t *pI, const active_mask_t &active_mask, unsigned warp_id );
     void func_exec_inst( warp_inst_t &inst );
     address_type translate_local_memaddr(address_type localaddr, unsigned tid, unsigned num_shader );
+
+    void read_operands();
     
     void execute();
     
-- 
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