[PATCH] D55314: AMDGPU: Turn on the DPP combiner by default

[Valery Pykhtin via Phabricator via llvm-commits]

vpykhtin updated this revision to Diff 176811.

Repository:
  rL LLVM

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D55314/new/

https://reviews.llvm.org/D55314

Files:
  lib/Target/AMDGPU/AMDGPUTargetMachine.cpp
  test/CodeGen/AMDGPU/llvm.amdgcn.update.dpp.ll


Index: test/CodeGen/AMDGPU/llvm.amdgcn.update.dpp.ll
===================================================================
--- test/CodeGen/AMDGPU/llvm.amdgcn.update.dpp.ll
+++ test/CodeGen/AMDGPU/llvm.amdgcn.update.dpp.ll
@@ -1,5 +1,5 @@
-; RUN: llc -march=amdgcn -mcpu=tonga -mattr=-flat-for-global -verify-machineinstrs -show-mc-encoding < %s | FileCheck -check-prefix=VI -check-prefix=VI-OPT %s
-; RUN: llc -O0 -march=amdgcn -mcpu=tonga -mattr=-flat-for-global -verify-machineinstrs -show-mc-encoding < %s | FileCheck -check-prefix=VI -check-prefix=VI-NOOPT %s
+; RUN: llc -march=amdgcn -mcpu=tonga -mattr=-flat-for-global -amdgpu-dpp-combine=false -verify-machineinstrs -show-mc-encoding < %s | FileCheck -check-prefix=VI -check-prefix=VI-OPT %s
+; RUN: llc -O0 -march=amdgcn -mcpu=tonga -mattr=-flat-for-global -amdgpu-dpp-combine=false -verify-machineinstrs -show-mc-encoding < %s | FileCheck -check-prefix=VI -check-prefix=VI-NOOPT %s
 
 ; VI-LABEL: {{^}}dpp_test:
 ; VI: v_mov_b32_e32 v0, s{{[0-9]+}}
Index: lib/Target/AMDGPU/AMDGPUTargetMachine.cpp
===================================================================
--- lib/Target/AMDGPU/AMDGPUTargetMachine.cpp
+++ lib/Target/AMDGPU/AMDGPUTargetMachine.cpp
@@ -109,7 +109,7 @@
 static cl::opt<bool> EnableDPPCombine(
   "amdgpu-dpp-combine",
   cl::desc("Enable DPP combiner"),
-  cl::init(false));
+  cl::init(true));
 
 // Enable address space based alias analysis
 static cl::opt<bool> EnableAMDGPUAliasAnalysis("enable-amdgpu-aa", cl::Hidden,


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