1f58dda4e4
Original commit r311077 of D32871 was reverted in r311304 due to failures reported in PR34248. This recommit fixes PR34248 by restricting the packing of predicated scalars into vectors only when vectorizing, avoiding doing so when unrolling w/o vectorizing. Added a test derived from the reproducer of PR34248. llvm-svn: 311849
34 lines
1.1 KiB
LLVM
34 lines
1.1 KiB
LLVM
; REQUIRES: asserts
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; RUN: opt -mtriple=s390x-unknown-linux -mcpu=z13 -loop-vectorize \
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; RUN: -force-vector-width=4 -debug-only=loop-vectorize \
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; RUN: -disable-output -enable-interleaved-mem-accesses=false < %s 2>&1 | \
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; RUN: FileCheck %s
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;
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; Check that a scalarized load/store does not get a cost for insterts/
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; extracts, since z13 supports element load/store.
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define void @fun(i32* %data, i64 %n) {
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entry:
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br label %for.body
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for.body:
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%i = phi i64 [ 0, %entry ], [ %i.next, %for.body ]
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%tmp0 = getelementptr inbounds i32, i32* %data, i64 %i
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%tmp1 = load i32, i32* %tmp0, align 4
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%tmp2 = add i32 %tmp1, 1
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store i32 %tmp2, i32* %tmp0, align 4
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%i.next = add nuw nsw i64 %i, 2
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%cond = icmp slt i64 %i.next, %n
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br i1 %cond, label %for.body, label %for.end
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for.end:
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ret void
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; CHECK: LV: Scalarizing: %tmp1 = load i32, i32* %tmp0, align 4
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; CHECK: LV: Scalarizing: store i32 %tmp2, i32* %tmp0, align 4
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; CHECK: LV: Found an estimated cost of 4 for VF 4 For instruction: %tmp1 = load i32, i32* %tmp0, align 4
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; CHECK: LV: Found an estimated cost of 4 for VF 4 For instruction: store i32 %tmp2, i32* %tmp0, align 4
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}
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