From: Stanislav Mekhanoshin <Stanislav.Mekhanoshin@amd.com>
Date: Tue, 14 May 2019 16:04:03 +0000 (+0000)
Subject: [AMDGPU] gfx1010 Strengthen some SMEM WAR hazard unit tests. NFC.
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=b280cac155c96215099a4a1ddbed0f15e046fcee;p=llvm

[AMDGPU] gfx1010 Strengthen some SMEM WAR hazard unit tests. NFC.

Tighten conditions on SMEM WAR hazard unit tests to ensure rejection
of workaround insertion where a s_waitcnt is present in dependency
chain. The current workaround code already conforms to these revise
tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@360686 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/test/CodeGen/AMDGPU/smem-war-hazard.mir b/test/CodeGen/AMDGPU/smem-war-hazard.mir
index eab4c42decf..e53d16a98fa 100644
--- a/test/CodeGen/AMDGPU/smem-war-hazard.mir
+++ b/test/CodeGen/AMDGPU/smem-war-hazard.mir
@@ -31,8 +31,8 @@ body: |
 
 # GCN-LABEL: name: hazard_smem_war_related_clause
 # GCN:      S_LOAD_DWORD_IMM
-# GCN:      S_WAITCNT
-# GCN:      S_ADD_U32
+# GCN-NEXT: S_WAITCNT
+# GCN-NEXT: S_ADD_U32
 # GCN-NEXT: V_CMP_EQ_F32
 ---
 name: hazard_smem_war_related_clause
@@ -46,6 +46,23 @@ body: |
     S_ENDPGM 0
 ...
 
+# GCN-LABEL: name: hazard_smem_war_related_clause_vmcnt
+# GCN:      S_LOAD_DWORD_IMM
+# GCN-NEXT: S_WAITCNT 3952{{$}}
+# GCN-NEXT: S_ADD_U32
+# GCN-NEXT: V_CMP_EQ_F32
+---
+name: hazard_smem_war_related_clause_vmcnt
+body: |
+  bb.0:
+    liveins: $sgpr0, $sgpr1, $sgpr4, $vgpr0, $vgpr1
+    $sgpr2 = S_LOAD_DWORD_IMM $sgpr0_sgpr1, 0, 0, 0
+    S_WAITCNT 3952
+    $sgpr3 = S_ADD_U32 $sgpr2, $sgpr4, implicit-def $scc
+    $sgpr0_sgpr1 = V_CMP_EQ_F32_e64 0, $vgpr0, 0, $vgpr1, 1, implicit $exec
+    S_ENDPGM 0
+...
+
 # GCN-LABEL: name: hazard_smem_war_branch
 # GCN:      S_LOAD_DWORD_IMM
 # GCN:      $sgpr_null = S_MOV_B32 0