1 ; RUN: opt -loop-reduce -S < %s | FileCheck %s 2 ; 3 ; <rdar://10701050> "Cannot split an edge from an IndirectBrInst" assert. 4 5 target 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-n8:16:32:64" 6 target triple = "x86_64-apple-darwin10.0.0" 7 8 ; while.cond197 is a dominates the simplified loop while.cond238 but 9 ; has no with no preheader. 10 ; 11 ; CHECK: @nopreheader 12 ; CHECK: %while.cond238 13 ; CHECK: phi i64 14 ; CHECK-NOT: phi 15 ; CHECK: indirectbr 16 define void @nopreheader(i8* %end) nounwind { 17 entry: 18 br label %while.cond179 19 20 while.cond179: ; preds = %if.end434, %if.end369, %if.end277, %if.end165 21 %s.1 = phi i8* [ undef, %if.end434 ], [ %incdec.ptr356, %if.end348 ], [ undef, %entry ] 22 indirectbr i8* undef, [label %land.rhs184, label %while.end453] 23 24 land.rhs184: ; preds = %while.cond179 25 indirectbr i8* undef, [label %while.end453, label %while.cond197] 26 27 while.cond197: ; preds = %land.rhs202, %land.rhs184 28 %0 = phi i64 [ %indvar.next11, %land.rhs202 ], [ 0, %land.rhs184 ] 29 indirectbr i8* undef, [label %land.rhs202, label %while.end215] 30 31 land.rhs202: ; preds = %while.cond197 32 %indvar.next11 = add i64 %0, 1 33 indirectbr i8* undef, [label %while.end215, label %while.cond197] 34 35 while.end215: ; preds = %land.rhs202, %while.cond197 36 indirectbr i8* undef, [label %PREMATURE, label %if.end221] 37 38 if.end221: ; preds = %while.end215 39 indirectbr i8* undef, [label %while.cond238.preheader, label %lor.lhs.false227] 40 41 lor.lhs.false227: ; preds = %if.end221 42 indirectbr i8* undef, [label %while.cond238.preheader, label %if.else] 43 44 while.cond238.preheader: ; preds = %lor.lhs.false227, %if.end221 45 %tmp16 = add i64 %0, 2 46 indirectbr i8* undef, [label %while.cond238] 47 48 while.cond238: ; preds = %land.rhs243, %while.cond238.preheader 49 %1 = phi i64 [ %indvar.next15, %land.rhs243 ], [ 0, %while.cond238.preheader ] 50 %tmp36 = add i64 %tmp16, %1 51 %s.3 = getelementptr i8* %s.1, i64 %tmp36 52 %cmp241 = icmp ult i8* %s.3, %end 53 indirectbr i8* undef, [label %land.rhs243, label %while.end256] 54 55 land.rhs243: ; preds = %while.cond238 56 %indvar.next15 = add i64 %1, 1 57 indirectbr i8* undef, [label %while.end256, label %while.cond238] 58 59 while.end256: ; preds = %land.rhs243, %while.cond238 60 indirectbr i8* undef, [label %PREMATURE] 61 62 if.else: ; preds = %lor.lhs.false227 63 indirectbr i8* undef, [label %if.then297, label %if.else386] 64 65 if.then297: ; preds = %if.else 66 indirectbr i8* undef, [label %PREMATURE, label %if.end307] 67 68 if.end307: ; preds = %if.then297 69 indirectbr i8* undef, [label %if.end314, label %FAIL] 70 71 if.end314: ; preds = %if.end307 72 indirectbr i8* undef, [label %if.end340] 73 74 if.end340: ; preds = %while.end334 75 indirectbr i8* undef, [label %PREMATURE, label %if.end348] 76 77 if.end348: ; preds = %if.end340 78 %incdec.ptr356 = getelementptr inbounds i8* undef, i64 2 79 indirectbr i8* undef, [label %while.cond179] 80 81 if.else386: ; preds = %if.else 82 indirectbr i8* undef, [label %while.end453, label %if.end434] 83 84 if.end434: ; preds = %if.then428, %if.end421 85 indirectbr i8* undef, [label %while.cond179] 86 87 while.end453: ; preds = %if.else386, %land.rhs184, %while.cond179 88 indirectbr i8* undef, [label %PREMATURE, label %if.end459] 89 90 if.end459: ; preds = %while.end453 91 indirectbr i8* undef, [label %if.then465, label %FAIL] 92 93 if.then465: ; preds = %if.end459 94 indirectbr i8* undef, [label %return, label %if.then479] 95 96 if.then479: ; preds = %if.then465 97 indirectbr i8* undef, [label %return] 98 99 FAIL: ; preds = %if.end459, %if.end307, %land.lhs.true142, %land.lhs.true131, %while.end 100 indirectbr i8* undef, [label %DECL_FAIL] 101 102 PREMATURE: ; preds = %while.end453, %while.end415, %if.end340, %while.end334, %if.then297, %while.end256, %while.end215 103 indirectbr i8* undef, [label %return, label %if.then495] 104 105 if.then495: ; preds = %PREMATURE 106 indirectbr i8* undef, [label %return] 107 108 DECL_FAIL: ; preds = %if.then488, %FAIL, %land.lhs.true99, %lor.lhs.false, %if.end83, %if.then39, %if.end 109 indirectbr i8* undef, [label %return] 110 111 return: ; preds = %if.then512, %if.end504, %DECL_FAIL, %if.then495, %PREMATURE, %if.then479, %if.then465, %if.then69, %if.end52, %if.end19, %if.then 112 ret void 113 } 114
