31 lines
1.2 KiB
LLVM
31 lines
1.2 KiB
LLVM
; RUN: opt < %s -loop-vectorize -force-vector-interleave=1 -force-vector-width=4 -instcombine -S | FileCheck %s
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
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;CHECK-LABEL: @start_at_nonzero(
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;CHECK: mul nuw <4 x i32>
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;CHECK: ret i32
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define i32 @start_at_nonzero(i32* nocapture %a, i32 %start, i32 %end) nounwind uwtable ssp {
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entry:
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%cmp3 = icmp slt i32 %start, %end
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br i1 %cmp3, label %for.body.lr.ph, label %for.end
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for.body.lr.ph: ; preds = %entry
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%0 = sext i32 %start to i64
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br label %for.body
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for.body: ; preds = %for.body.lr.ph, %for.body
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%indvars.iv = phi i64 [ %0, %for.body.lr.ph ], [ %indvars.iv.next, %for.body ]
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%arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv
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%1 = load i32, i32* %arrayidx, align 4
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%mul = mul nuw i32 %1, 333
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store i32 %mul, i32* %arrayidx, align 4
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%indvars.iv.next = add i64 %indvars.iv, 1
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%2 = trunc i64 %indvars.iv.next to i32
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%cmp = icmp slt i32 %2, %end
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br i1 %cmp, label %for.body, label %for.end
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for.end: ; preds = %for.body, %entry
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ret i32 4
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}
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