c1c5b854ad
A set of microbenchmarks (https://github.com/llvm/llvm-test-suite/pull/26) showed that loop interleaving can be beneficial for loops with low trip count as well. Loop interleaving count computation is updated accordingly in prior patches while this patch removes the loop trip count threshold for interleaving.
22 lines
558 B
LLVM
22 lines
558 B
LLVM
; RUN: opt -S -passes=loop-vectorize -mtriple=s390x-linux-gnu -vectorizer-min-trip-count=8 < %s | FileCheck %s
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define i32 @main(i32 %arg, ptr nocapture readnone %arg1) #0 {
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;CHECK: vector.body:
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entry:
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%0 = alloca i8, align 1
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br label %loop
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loop:
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%storemerge.i.i = phi i8 [ 0, %entry ], [ %tmp12.i.i, %loop ]
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store i8 %storemerge.i.i, ptr %0, align 2
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%tmp8.i.i = icmp ult i8 %storemerge.i.i, 8
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%tmp12.i.i = add nuw nsw i8 %storemerge.i.i, 1
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br i1 %tmp8.i.i, label %loop, label %ret
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ret:
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ret i32 0
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}
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attributes #0 = { "target-cpu"="z13" }
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