Fixed the bug in CleanupBindless which may introduce infinit spill for address regsiter

bcheng0127 · igcbot · commit 20850928f6a7 · 2021-07-14T10:16:24.000+02:00
diff --git a/visa/Optimizer.cpp b/visa/Optimizer.cpp
@@ -5864,7 +5864,15 @@ bool Optimizer::foldPseudoAndOr(G4_BB* bb, INST_LIST_ITER& ii)
                 }
                 else
                 {
-                    values.deleteValue(inst);
+                    G4_DstRegRegion* dst = inst->getDst();
+                    if (dst && dst->isAddress()) // If the address register is used for none extdesc
+                    {
+                        values.clear();
+                    }
+                    else
+                    {
+                        values.deleteValue(inst);
+                    }
                 }
                 ++iter;
             }

Original file line number	Diff line number	Diff line change
`@@ -5864,7 +5864,15 @@ bool Optimizer::foldPseudoAndOr(G4_BB* bb, INST_LIST_ITER& ii)`
`5864`	`5864`	`}`
`5865`	`5865`	`else`
`5866`	`5866`	`{`
`5867`		`- values.deleteValue(inst);`
	`5867`	`+ G4_DstRegRegion* dst = inst->getDst();`
	`5868`	`+ if (dst && dst->isAddress()) // If the address register is used for none extdesc`
	`5869`	`+ {`
	`5870`	`+ values.clear();`
	`5871`	`+ }`
	`5872`	`+ else`
	`5873`	`+ {`
	`5874`	`+ values.deleteValue(inst);`
	`5875`	`+ }`
`5868`	`5876`	`}`
`5869`	`5877`	`++iter;`
`5870`	`5878`	`}`