forked from OSchip/llvm-project
50 lines
2.1 KiB
LLVM
50 lines
2.1 KiB
LLVM
; RUN: opt -loop-vectorize -force-vector-width=2 -S < %s
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;
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; Cleaned up version of fe_tools.all_dimensions.ll from PR36311.
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; Forcing VF=2 to trigger vector code gen
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;
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; This is a test case that let's vectorizer's code gen to modify CFG and get
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; DomTree out of date, such that an assert from SCEV would trigger if
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; reanalysis of SCEV happens subsequently. Once vector code gen starts,
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; vectorizer should not invoke recomputation of Analysis.
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$test = comdat any
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declare i32 @__gxx_personality_v0(...)
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; Function Attrs: uwtable
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define dso_local void @test() local_unnamed_addr #0 comdat align 2 personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
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entry:
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br label %for.body51
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for.body51: ; preds = %for.body51, %entry
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br i1 undef, label %for.body51, label %for.body89.lr.ph
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for.cond80.loopexit: ; preds = %for.body89
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%inc94.lcssa = phi i32 [ %inc94, %for.body89 ]
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br i1 undef, label %for.body89.lr.ph, label %nrvo.skipdtor.loopexit
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for.body89.lr.ph: ; preds = %for.cond80.loopexit, %for.body51
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%i79.0179 = phi i32 [ %add90, %for.cond80.loopexit ], [ 0, %for.body51 ]
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%next_index.4178 = phi i32 [ %inc94.lcssa, %for.cond80.loopexit ], [ undef, %for.body51 ]
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%add90 = add nuw i32 %i79.0179, 1
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%mul91 = mul i32 %add90, undef
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br label %for.body89
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for.body89: ; preds = %for.body89, %for.body89.lr.ph
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%j.0175 = phi i32 [ 0, %for.body89.lr.ph ], [ %add92, %for.body89 ]
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%next_index.5174 = phi i32 [ %next_index.4178, %for.body89.lr.ph ], [ %inc94, %for.body89 ]
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%add92 = add nuw i32 %j.0175, 1
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%add93 = add i32 %add92, %mul91
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%inc94 = add i32 %next_index.5174, 1
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%conv95 = zext i32 %next_index.5174 to i64
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%arrayidx.i160 = getelementptr inbounds i32, i32* undef, i64 %conv95
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store i32 %add93, i32* %arrayidx.i160, align 4
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;, !tbaa !1
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%cmp87 = icmp ult i32 %add92, undef
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br i1 %cmp87, label %for.body89, label %for.cond80.loopexit
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nrvo.skipdtor.loopexit: ; preds = %for.cond80.loopexit
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ret void
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}
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