When NoMask WA is needed, disable jmpi completely as

jgu222 · sys_zuul · commit ffc20ba45767 · 2020-02-21T07:25:27.000-08:00
there is no way to apply WA to jmpi.

So far, no issue is seen, but it could be potentially
infinite looping within a shader.

Change-Id: I8995a03837c92022fdd98a29bf45c27659f99340
diff --git a/IGC/Compiler/CISACodeGen/CISABuilder.cpp b/IGC/Compiler/CISACodeGen/CISABuilder.cpp
@@ -3991,11 +3991,14 @@ namespace IGC
 
         if (IGC_IS_FLAG_ENABLED(ForceNoMaskWA)) {
             SaveOption(vISA_forceNoMaskWA, true);
+            SaveOption(vISA_EnableScalarJmp, false);
         }
         if (m_program->m_Platform->getWATable().Wa_1407528679 != 0 &&
             IGC_GET_FLAG_VALUE(NoMaskWA) > 0)
         {
             SaveOption(vISA_noMaskWA, IGC_GET_FLAG_VALUE(NoMaskWA));
+            // turn off jmpi as there is no wa for jmpi
+            SaveOption(vISA_EnableScalarJmp, false);
         }
 
         if (IGC_IS_FLAG_ENABLED(DisableCSEL))

Original file line number	Diff line number	Diff line change
`@@ -3991,11 +3991,14 @@ namespace IGC`
`3991`	`3991`
`3992`	`3992`	`if (IGC_IS_FLAG_ENABLED(ForceNoMaskWA)) {`
`3993`	`3993`	`SaveOption(vISA_forceNoMaskWA, true);`
	`3994`	`+ SaveOption(vISA_EnableScalarJmp, false);`
`3994`	`3995`	`}`
`3995`	`3996`	`if (m_program->m_Platform->getWATable().Wa_1407528679 != 0 &&`
`3996`	`3997`	`IGC_GET_FLAG_VALUE(NoMaskWA) > 0)`
`3997`	`3998`	`{`
`3998`	`3999`	`SaveOption(vISA_noMaskWA, IGC_GET_FLAG_VALUE(NoMaskWA));`
	`4000`	`+ // turn off jmpi as there is no wa for jmpi`
	`4001`	`+ SaveOption(vISA_EnableScalarJmp, false);`
`3999`	`4002`	`}`
`4000`	`4003`
`4001`	`4004`	`if (IGC_IS_FLAG_ENABLED(DisableCSEL))`