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db2367512e
LCSSA PHIs may have undef values. The vectorizer updates values that are used by outside users such as PHIs. The bug happened because undefs are not loop values. This patch handles these PHIs. PR14725 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171251 91177308-0d34-0410-b5e6-96231b3b80d8
30 lines
910 B
LLVM
30 lines
910 B
LLVM
; RUN: opt < %s -loop-vectorize -force-vector-width=4
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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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target triple = "x86_64-unknown-linux-gnu"
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%type1 = type { %type2 }
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%type2 = type { [0 x i8*], i8**, i32, i32, i32 }
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define void @test() nounwind uwtable align 2 {
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br label %for.body.lr.ph.i.i.i
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for.body.lr.ph.i.i.i:
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br label %for.body.i.i.i
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for.body.i.i.i:
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%indvars.iv = phi i64 [ %indvars.iv.next, %for.inc.i.i.i ], [ 0, %for.body.lr.ph.i.i.i ]
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br label %for.inc.i.i.i
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for.inc.i.i.i:
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%indvars.iv.next = add i64 %indvars.iv, 1
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%lftr.wideiv = trunc i64 %indvars.iv.next to i32
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%exitcond = icmp ne i32 %lftr.wideiv, undef
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br i1 %exitcond, label %for.body.i.i.i, label %for.end.i.i.i
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for.end.i.i.i:
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%lcssa = phi %type1* [ undef, %for.inc.i.i.i ]
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unreachable
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}
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