Use LSC for spill when it is on slot#1

Gang Y Chen · igcbot · commit cc91c3e41fff · 2022-03-07T21:47:56.000+01:00
Force to use LSC for spill/fill if it is on scratch-surface#1
diff --git a/IGC/Compiler/CISACodeGen/CISABuilder.cpp b/IGC/Compiler/CISACodeGen/CISABuilder.cpp
@@ -4584,7 +4584,12 @@ namespace IGC
             SaveOption(vISA_LSCEnableHalfSIMD, true);
         }
 
-        if (IGC_IS_FLAG_ENABLED(LscForceSpillNonStackcall)) {
+        if (IGC_IS_FLAG_ENABLED(LscForceSpillNonStackcall) ||
+            // workaround visa issue of using legacy send on slot1
+            (m_program->m_ScratchSpaceSize > 0 &&
+             m_program->m_Platform->hasScratchSurface() &&
+             m_program->m_DriverInfo->supportsSeparatingSpillAndPrivateScratchMemorySpace()))
+        {
             SaveOption(vISA_lscNonStackSpill, true);
         }
 

Original file line number	Diff line number	Diff line change
`@@ -4584,7 +4584,12 @@ namespace IGC`
`4584`	`4584`	`SaveOption(vISA_LSCEnableHalfSIMD, true);`
`4585`	`4585`	`}`
`4586`	`4586`
`4587`		`- if (IGC_IS_FLAG_ENABLED(LscForceSpillNonStackcall)) {`
	`4587`	`+ if (IGC_IS_FLAG_ENABLED(LscForceSpillNonStackcall) \|\|`
	`4588`	`+ // workaround visa issue of using legacy send on slot1`
	`4589`	`+ (m_program->m_ScratchSpaceSize > 0 &&`
	`4590`	`+ m_program->m_Platform->hasScratchSurface() &&`
	`4591`	`+ m_program->m_DriverInfo->supportsSeparatingSpillAndPrivateScratchMemorySpace()))`
	`4592`	`+ {`
`4588`	`4593`	`SaveOption(vISA_lscNonStackSpill, true);`
`4589`	`4594`	`}`
`4590`	`4595`