forked from OSchip/llvm-project
34 lines
1.4 KiB
LLVM
34 lines
1.4 KiB
LLVM
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; RUN: opt < %s -loop-vectorize -force-vector-width=4 -S | FileCheck %s
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target datalayout = "e-m:e-i64:64-i128:128-n32:64-S128"
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; This testcase causes SCEV to return a pointer-typed exit value.
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; CHECK: @f
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; Expect that the pointer indvar has been converted into an integer indvar.
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; CHECK: %index.next = add i64 %index, 4
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define i32 @f(i32* readonly %a, i32* readnone %b) #0 {
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entry:
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%cmp.6 = icmp ult i32* %a, %b
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br i1 %cmp.6, label %while.body.preheader, label %while.end
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while.body.preheader: ; preds = %entry
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br label %while.body
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while.body: ; preds = %while.body.preheader, %while.body
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%a.pn = phi i32* [ %incdec.ptr8, %while.body ], [ %a, %while.body.preheader ]
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%acc.07 = phi i32 [ %add, %while.body ], [ 0, %while.body.preheader ]
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%incdec.ptr8 = getelementptr inbounds i32, i32* %a.pn, i64 1
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%0 = load i32, i32* %incdec.ptr8, align 1
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%add = add nuw nsw i32 %0, %acc.07
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%exitcond = icmp eq i32* %incdec.ptr8, %b
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br i1 %exitcond, label %while.cond.while.end_crit_edge, label %while.body
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while.cond.while.end_crit_edge: ; preds = %while.body
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%add.lcssa = phi i32 [ %add, %while.body ]
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br label %while.end
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while.end: ; preds = %while.cond.while.end_crit_edge, %entry
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%acc.0.lcssa = phi i32 [ %add.lcssa, %while.cond.while.end_crit_edge ], [ 0, %entry ]
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ret i32 %acc.0.lcssa
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}
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