Properly enable WaveAllJointReduction by default

Enable WaveAllJointReduction by default

Author: bowenxue-intel

IGC/common/igc_flags.h

@@ -331,7 +331,7 @@ DECLARE_IGC_REGKEY(bool, DisableLoopSplitWidePHIs, false, "Disable splitting of
 DECLARE_IGC_REGKEY(bool, EnableBarrierControlFlowOptimizationPass, false, "Enable barrier control flow optimization pass", false)
 DECLARE_IGC_REGKEY(bool, EnableWaveShuffleIndexSinking, true, "Hoist identical instructions operating on WaveShuffleIndex instructions with the same source and a constant lane/channel", false)
 DECLARE_IGC_REGKEY(DWORD, WaveShuffleIndexSinkingMaxIterations, 3, "Max number of iterations to run iterative WaveShuffleIndexSinking", false)
-DECLARE_IGC_REGKEY(bool, EnableWaveAllJointReduction, false, "Enable Joint Reduction Optimization.", true)
+DECLARE_IGC_REGKEY(bool, EnableWaveAllJointReduction, true, "Enable Joint Reduction Optimization.", false)
 
 DECLARE_IGC_GROUP("Shader debugging")
 DECLARE_IGC_REGKEY(bool, CopyA0ToDBG0,                  false, " Copy a0 used for extended msg descriptor to dbg0 to help debug", false)