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LoopVectorize: Fix a bug in the initialization of reduction variables. AND needs to start at all-one

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while XOR, and OR need to start at zero.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167032 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nadav Rotem
2012-10-30 18:12:36 +00:00
parent c197a55019
commit cc03331caa
2 changed files with 22 additions and 7 deletions
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test/Transforms/LoopVectorize/reduction.ll
+1
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@@ -151,6 +151,7 @@ for.end: ; preds = %for.body, %entry
;CHECK: @reduction_and
;CHECK: and <4 x i32>
;CHECK: <i32 -1, i32 -1, i32 -1, i32 -1>
;CHECK: ret i32
define i32 @reduction_and(i32 %n, i32* nocapture %A, i32* nocapture %B) nounwind uwtable readonly {
entry: