When NoMask WA is needed, disable jmpi completely as

jgu222 · sys_zuul · commit 8e150f625ef1 · 2020-02-06T13:10:03.000-08:00
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: I7c4fdf2f89d06e78f7d709e17a19deb19f043d13
diff --git a/IGC/Compiler/CISACodeGen/CISABuilder.cpp b/IGC/Compiler/CISACodeGen/CISABuilder.cpp
@@ -3971,11 +3971,14 @@ 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
`@@ -3971,11 +3971,14 @@ namespace IGC`
`3971`	`3971`
`3972`	`3972`	`if (IGC_IS_FLAG_ENABLED(ForceNoMaskWA)) {`
`3973`	`3973`	`SaveOption(vISA_forceNoMaskWA, true);`
	`3974`	`+ SaveOption(vISA_EnableScalarJmp, false);`
`3974`	`3975`	`}`
`3975`	`3976`	`if (m_program->m_Platform->getWATable().Wa_1407528679 != 0 &&`
`3976`	`3977`	`IGC_GET_FLAG_VALUE(NoMaskWA) > 0)`
`3977`	`3978`	`{`
`3978`	`3979`	`SaveOption(vISA_noMaskWA, IGC_GET_FLAG_VALUE(NoMaskWA));`
	`3980`	`+ // turn off jmpi as there is no wa for jmpi`
	`3981`	`+ SaveOption(vISA_EnableScalarJmp, false);`
`3979`	`3982`	`}`
`3980`	`3983`
`3981`	`3984`	`if (IGC_IS_FLAG_ENABLED(DisableCSEL))`