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; RUN: llvm-as < %s | opt -loop-unswitch -disable-output
; PR1559
target triple = "i686-pc-linux-gnu"
%struct.re_pattern_buffer = type { i8*, i32, i32, i32, i8*, i8*, i32, i8 }
define fastcc i32 @byte_regex_compile(i8* %pattern, i32 %size, i32 %syntax, %struct.re_pattern_buffer* %bufp) {
entry:
br i1 false, label %bb147, label %cond_next123
cond_next123: ; preds = %entry
ret i32 0
bb147: ; preds = %entry
switch i32 0, label %normal_char [
i32 91, label %bb1734
i32 92, label %bb5700
]
bb1734: ; preds = %bb147
br label %bb1855.outer.outer
cond_true1831: ; preds = %bb1855.outer
br i1 %tmp1837, label %cond_next1844, label %cond_true1840
cond_true1840: ; preds = %cond_true1831
ret i32 0
cond_next1844: ; preds = %cond_true1831
br i1 false, label %bb1855.outer, label %cond_true1849
cond_true1849: ; preds = %cond_next1844
br label %bb1855.outer.outer
bb1855.outer.outer: ; preds = %cond_true1849, %bb1734
%b.10.ph.ph = phi i8* [ null, %cond_true1849 ], [ null, %bb1734 ] ; <i8*> [#uses=1]
br label %bb1855.outer
bb1855.outer: ; preds = %bb1855.outer.outer, %cond_next1844
%b.10.ph = phi i8* [ null, %cond_next1844 ], [ %b.10.ph.ph, %bb1855.outer.outer ] ; <i8*> [#uses=1]
%tmp1837 = icmp eq i8* null, null ; <i1> [#uses=2]
br i1 false, label %cond_true1831, label %cond_next1915
cond_next1915: ; preds = %cond_next1961, %bb1855.outer
store i8* null, i8** null
br i1 %tmp1837, label %cond_next1929, label %cond_true1923
cond_true1923: ; preds = %cond_next1915
ret i32 0
cond_next1929: ; preds = %cond_next1915
br i1 false, label %cond_next1961, label %cond_next2009
cond_next1961: ; preds = %cond_next1929
%tmp1992 = getelementptr i8* %b.10.ph, i32 0 ; <i8*> [#uses=0]
br label %cond_next1915
cond_next2009: ; preds = %cond_next1929
ret i32 0
bb5700: ; preds = %bb147
ret i32 0
normal_char: ; preds = %bb147
ret i32 0
}
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