forked from OSchip/llvm-project
42 lines
1.2 KiB
LLVM
42 lines
1.2 KiB
LLVM
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; RUN: opt -indvars -loop-vectorize -force-vector-width=2 -force-vector-interleave=1 -S < %s | FileCheck %s
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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; We must not vectorize this loop. %add55 is not reduction. Its value is used
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; multiple times.
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; PR18526
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; CHECK: multiple_use_of_value
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; CHECK-NOT: <2 x i32>
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define void @multiple_use_of_value() {
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entry:
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%n = alloca i32, align 4
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%k7 = alloca i32, align 4
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%nf = alloca i32, align 4
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%0 = load i32, i32* %k7, align 4
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%.neg1 = sub i32 0, %0
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%n.promoted = load i32, i32* %n, align 4
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%nf.promoted = load i32, i32* %nf, align 4
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br label %for.body
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for.body:
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%inc107 = phi i32 [ undef, %entry ], [ %inc10, %for.body ]
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%inc6 = phi i32 [ %nf.promoted, %entry ], [ undef, %for.body ]
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%add55 = phi i32 [ %n.promoted, %entry ], [ %add5, %for.body ]
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%.neg2 = sub i32 0, %inc6
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%add.neg = add i32 0, %add55
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%add4.neg = add i32 %add.neg, %.neg1
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%sub = add i32 %add4.neg, %.neg2
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%add5 = add i32 %sub, %add55
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%inc10 = add i32 %inc107, 1
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%cmp = icmp ult i32 %inc10, 61
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br i1 %cmp, label %for.body, label %for.end
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for.end:
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%add5.lcssa = phi i32 [ %add5, %for.body ]
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store i32 %add5.lcssa, i32* %n, align 4
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ret void
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}
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