97fa3e5936
This is groundwork for #151300, which aims to support first-faulting loads in non-tail-folded early-exit loops. Per #175900, we need a variable-length stepping transform that can shared between EVL and non-EVL loops. The idea is to have an EVL-independent counter and transform for tracking the cumulative number of processed elements. This patch renames the existing counter (VPEVLBasedIVPHIRecipe) and transform (canonicalizeEVLLoops) to be EVL-independent: - Rename VPEVLBasedIVPHIRecipe to VPCurrentIterationRecipe to reflect its general purpose of tracking processed element count. - Rename canonicalizeEVLLoops to convertToVariableLengthStep. This is NFC.
36 lines
1.3 KiB
LLVM
36 lines
1.3 KiB
LLVM
; RUN: opt -passes=loop-vectorize -debug-only=loop-vectorize \
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; RUN: -force-tail-folding-style=data-with-evl -force-vector-width=4 \
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; RUN: -force-target-supports-scalable-vectors -scalable-vectorization=on \
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; RUN: -disable-output < %s 2>&1 | FileCheck --check-prefixes=NO-VP %s
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; RUN: opt -passes=loop-vectorize -debug-only=loop-vectorize \
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; RUN: -force-tail-folding-style=none \
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; RUN: -prefer-predicate-over-epilogue=predicate-dont-vectorize \
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; RUN: -force-target-supports-scalable-vectors -scalable-vectorization=on \
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; RUN: -disable-output < %s 2>&1 | FileCheck --check-prefixes=NO-VP %s
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; The target does not support predicated vectorization.
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define void @foo(ptr noalias %a, ptr noalias %b, ptr noalias %c, i64 %N) {
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; NO-VP-NOT: CURRENT-ITERATION-PHI
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entry:
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br label %for.body
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for.body:
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%iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]
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%arrayidx = getelementptr inbounds i32, ptr %b, i64 %iv
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%0 = load i32, ptr %arrayidx, align 4
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%arrayidx2 = getelementptr inbounds i32, ptr %c, i64 %iv
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%1 = load i32, ptr %arrayidx2, align 4
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%add = add nsw i32 %1, %0
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%arrayidx4 = getelementptr inbounds i32, ptr %a, i64 %iv
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store i32 %add, ptr %arrayidx4, align 4
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%iv.next = add nuw nsw i64 %iv, 1
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%exitcond.not = icmp eq i64 %iv.next, %N
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br i1 %exitcond.not, label %for.cond.cleanup, label %for.body
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for.cond.cleanup:
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ret void
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}
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