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; RUN: opt %loadPolly -S -polly-codegen < %s | FileCheck %s
;
; Check that we do not crash as described here: http://llvm.org/PR21167
;
; In case the pieceweise affine function used to create an isl_ast_expr
; had empty cases (e.g., with contradicting constraints on the
; parameters), it was possible that the condition of the isl_ast_expr
; select was not a comparison but a constant (thus of type i64).
; However, we shouldn't crash in such a case :)
;
; CHECK: polly.split_new_and_old
;
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
; Function Attrs: nounwind uwtable
define void @dradb4(i32 %ido, i32 %l1, ptr %cc, ptr %ch, ptr %wa1, ptr %wa3) #0 {
entry:
%mul = mul nsw i32 %l1, %ido
br i1 undef, label %for.end256, label %if.end
if.end: ; preds = %entry
br i1 undef, label %L105, label %for.cond45.preheader
for.cond45.preheader: ; preds = %if.end
br i1 undef, label %for.body47, label %for.end198
for.body47: ; preds = %for.inc096, %for.cond45.preheader
br i1 undef, label %for.body53.lr.ph, label %for.inc096
for.body53.lr.ph: ; preds = %for.body47
br label %for.body53
for.body53: ; preds = %for.body53, %for.body53.lr.ph
%t7.014 = phi i32 [ 0, %for.body53.lr.ph ], [ %add58, %for.body53 ]
%i.013 = phi i32 [ 2, %for.body53.lr.ph ], [ %add193, %for.body53 ]
%add58 = add nsw i32 %t7.014, 2
store float undef, ptr %ch, align 4
%add129 = add nsw i32 %add58, %mul
%idxprom142 = sext i32 %add129 to i64
%arrayidx143 = getelementptr inbounds float, ptr %ch, i64 %idxprom142
store float undef, ptr %arrayidx143, align 4
%add153 = add nsw i32 %add129, %mul
%add177 = add nsw i32 %add153, %mul
%sub178 = add nsw i32 %add177, -1
%idxprom179 = sext i32 %sub178 to i64
%arrayidx180 = getelementptr inbounds float, ptr %ch, i64 %idxprom179
store float undef, ptr %arrayidx180, align 4
%0 = load float, ptr %wa3, align 4
%mul184 = fmul float undef, %0
%add189 = fadd float %mul184, 0.000000e+00
%idxprom190 = sext i32 %add177 to i64
%arrayidx191 = getelementptr inbounds float, ptr %ch, i64 %idxprom190
store float %add189, ptr %arrayidx191, align 4
%add193 = add nsw i32 %i.013, 2
%cmp52 = icmp slt i32 %add193, %ido
br i1 %cmp52, label %for.body53, label %for.inc096
for.inc096: ; preds = %for.body53, %for.body47
br i1 undef, label %for.body47, label %for.end198
for.end198: ; preds = %for.inc096, %for.cond45.preheader
br i1 false, label %for.end256, label %L105
L105: ; preds = %for.end198, %if.end
br label %for.end256
for.end256: ; preds = %L105, %for.end198, %entry
ret void
}
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