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; RUN: llc < %s -mtriple=x86_64-apple-darwin11 -relocation-model=pic -disable-fp-elim -stats |& not grep ext-opt
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define fastcc i8* @S_scan_str(i8* %start, i32 %keep_quoted, i32 %keep_delims) nounwind ssp {
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switch i8 undef, label %bb6 [
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bb5: ; preds = %entry, %entry, %entry, %entry, %entry
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bb6: ; preds = %bb5, %entry
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br i1 undef, label %bb7, label %bb9
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%0 = load i8* undef, align 1 ; <i8> [#uses=3]
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br i1 undef, label %bb12, label %bb10
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br i1 undef, label %bb12, label %bb11
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bb12: ; preds = %bb10, %bb9
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br i1 undef, label %bb13, label %bb14
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store i8 %0, i8* undef, align 1
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%1 = zext i8 %0 to i32 ; <i32> [#uses=1]
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bb18: ; preds = %bb14, %bb13
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%termcode.0 = phi i32 [ %1, %bb13 ], [ undef, %bb14 ] ; <i32> [#uses=2]
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%2 = icmp eq i8 %0, 0 ; <i1> [#uses=1]
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br i1 %2, label %bb21, label %bb19
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br i1 undef, label %bb21, label %bb20
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bb21: ; preds = %bb20, %bb19, %bb18
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%termcode.1 = phi i32 [ %termcode.0, %bb18 ], [ %termcode.0, %bb19 ], [ undef, %bb20 ] ; <i32> [#uses=0]