!fixup only update InductionBypassValues if there's a bypass.

fhahn · fhahn · commit ad1f578aa486 · 2024-11-10T10:28:00.000Z
diff --git a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
@@ -2647,8 +2647,9 @@ void InnerLoopVectorizer::createInductionResumeValue(
     }
   }
 
-  InductionBypassValues[OrigPhi] = {AdditionalBypass.first,
-                                    EndValueFromAdditionalBypass};
+  if (AdditionalBypass.first)
+    InductionBypassValues[OrigPhi] = {AdditionalBypass.first,
+                                      EndValueFromAdditionalBypass};
 }
 
 /// Return the expanded step for \p ID using \p ExpandedSCEVs to look up SCEV

Original file line number	Diff line number	Diff line change
`@@ -2647,8 +2647,9 @@ void InnerLoopVectorizer::createInductionResumeValue(`
`2647`	`2647`	`}`
`2648`	`2648`	`}`
`2649`	`2649`
`2650`		`- InductionBypassValues[OrigPhi] = {AdditionalBypass.first,`
`2651`		`- EndValueFromAdditionalBypass};`
	`2650`	`+ if (AdditionalBypass.first)`
	`2651`	`+ InductionBypassValues[OrigPhi] = {AdditionalBypass.first,`
	`2652`	`+ EndValueFromAdditionalBypass};`
`2652`	`2653`	`}`
`2653`	`2654`
`2654`	`2655`	`/// Return the expanded step for \p ID using \p ExpandedSCEVs to look up SCEV`