40 lines
1.7 KiB
LLVM
40 lines
1.7 KiB
LLVM
; RUN: opt -S -debug-only=loop-vectorize -loop-vectorize -instcombine < %s 2>&1 | FileCheck %s
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; REQUIRES: asserts
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target datalayout = "e-m:e-i64:64-i128:128-n32:64-S128"
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target triple = "armv8--linux-gnueabihf"
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@AB = common global [1024 x i8] zeroinitializer, align 4
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@CD = common global [1024 x i8] zeroinitializer, align 4
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define void @test_byte_interleaved_cost(i8 %C, i8 %D) {
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entry:
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br label %for.body
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; 8xi8 and 16xi8 are valid i8 vector types, so the cost of the interleaved
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; access group is 2.
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; CHECK: LV: Found an estimated cost of 2 for VF 8 For instruction: %tmp = load i8, i8* %arrayidx0, align 4
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; CHECK: LV: Found an estimated cost of 2 for VF 16 For instruction: %tmp = load i8, i8* %arrayidx0, align 4
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for.body: ; preds = %for.body, %entry
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%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
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%arrayidx0 = getelementptr inbounds [1024 x i8], [1024 x i8]* @AB, i64 0, i64 %indvars.iv
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%tmp = load i8, i8* %arrayidx0, align 4
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%tmp1 = or i64 %indvars.iv, 1
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%arrayidx1 = getelementptr inbounds [1024 x i8], [1024 x i8]* @AB, i64 0, i64 %tmp1
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%tmp2 = load i8, i8* %arrayidx1, align 4
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%add = add nsw i8 %tmp, %C
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%mul = mul nsw i8 %tmp2, %D
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%arrayidx2 = getelementptr inbounds [1024 x i8], [1024 x i8]* @CD, i64 0, i64 %indvars.iv
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store i8 %add, i8* %arrayidx2, align 4
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%arrayidx3 = getelementptr inbounds [1024 x i8], [1024 x i8]* @CD, i64 0, i64 %tmp1
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store i8 %mul, i8* %arrayidx3, align 4
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 2
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%cmp = icmp slt i64 %indvars.iv.next, 1024
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br i1 %cmp, label %for.body, label %for.end
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for.end: ; preds = %for.body
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ret void
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}
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