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1; RUN: opt < %s -passes=gvn | llvm-dis2; PR33583target 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"4target triple = "x86_64-unknown-linux-gnu"5 %struct.re_pattern_buffer = type { ptr, i64, i64, i64, ptr, ptr, i64, i8 }6 %struct.re_registers = type { i32, ptr, ptr }7 8define fastcc i32 @byte_re_match_2_internal(ptr nocapture %bufp, ptr %string1, i32 %size1, ptr %string2, i32 %size2, i32 %pos, ptr %regs, i32 %stop) nounwind {9entry:10 br label %bb15911 12succeed_label: ; preds = %bb15913 ret i32 014 15bb159: ; preds = %bb664, %bb554, %bb159, %bb159, %bb159, %entry16 %d.0 = phi ptr [ null, %entry ], [ %d.0, %bb159 ], [ %d.0, %bb554 ], [ %d.0, %bb159 ], [ %d.0, %bb159 ], [ %d.12, %bb664 ] ; <ptr> [#uses=5]17 switch i32 0, label %bb661 [18 i32 0, label %bb15919 i32 1, label %succeed_label20 i32 13, label %bb15921 i32 14, label %bb15922 i32 16, label %bb41123 i32 24, label %bb62224 i32 28, label %bb54325 ]26 27bb411: ; preds = %bb411, %bb15928 br label %bb41129 30bb543: ; preds = %bb15931 br i1 false, label %bb549, label %bb55032 33bb549: ; preds = %bb54334 br label %bb55435 36bb550: ; preds = %bb54337 br i1 false, label %bb554, label %bb55238 39bb552: ; preds = %bb55040 %0 = load i8, ptr %d.0, align 8 ; <i8> [#uses=0]41 br label %bb55442 43bb554: ; preds = %bb552, %bb550, %bb54944 br i1 false, label %bb159, label %bb66145 46bb622: ; preds = %bb622, %bb15947 br label %bb62248 49bb661: ; preds = %bb554, %bb15950 %d.12 = select i1 false, ptr null, ptr null ; <ptr> [#uses=1]51 br label %bb66452 53bb664: ; preds = %bb664, %bb66154 br i1 false, label %bb159, label %bb66455}56