Fix a bug on linear scan RA

bcheng0127 · igcbot · commit 5abfe48041b3 · 2022-05-24T00:41:41.000+02:00
diff --git a/visa/LinearScanRA.cpp b/visa/LinearScanRA.cpp
@@ -2447,6 +2447,11 @@ bool globalLinearScan::canBeSpilledLR(LSLiveRange* lr)
         return false;
     }
 
+    if (lr->getTopDcl()->isDoNotSpill())
+    {
+        return false;
+    }
+
     if (lr->isCall())
     {
         return false;

Original file line number	Diff line number	Diff line change
`@@ -2447,6 +2447,11 @@ bool globalLinearScan::canBeSpilledLR(LSLiveRange* lr)`
`2447`	`2447`	`return false;`
`2448`	`2448`	`}`
`2449`	`2449`
	`2450`	`+ if (lr->getTopDcl()->isDoNotSpill())`
	`2451`	`+ {`
	`2452`	`+ return false;`
	`2453`	`+ }`
	`2454`	`+`
`2450`	`2455`	`if (lr->isCall())`
`2451`	`2456`	`{`
`2452`	`2457`	`return false;`