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llvm-6502/test/Transforms/ObjCARC/path-overflow.ll
Dan Gohman 0d1bc5f916 Detect overflow in the path count computation. rdar://12277446. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163739 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-12 20:45:17 +00:00

330 lines
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LLVM
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; RUN: opt -objc-arc -S < %s
; rdar://12277446
; The total number of paths grows exponentially with the number of branches, and a
; computation of this number can overflow any reasonable fixed-sized integer.
target datalayout = "e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:32:64-v128:32:128-a0:0:32-n32-S32"
target triple = "thumbv7-apple-ios5.0.0"
%struct.NSConstantString.11.33.55.77.99.121.143.332.1130.1340.2768 = type { i32*, i32, i8*, i32 }
@_unnamed_cfstring_591 = external constant %struct.NSConstantString.11.33.55.77.99.121.143.332.1130.1340.2768, section "__DATA,__cfstring"
declare i8* @objc_retain(i8*) nonlazybind
declare void @objc_release(i8*) nonlazybind
define hidden void @foo() {
entry:
br i1 undef, label %msgSend.nullinit, label %msgSend.call
msgSend.call: ; preds = %entry
br label %msgSend.cont
msgSend.nullinit: ; preds = %entry
br label %msgSend.cont
msgSend.cont: ; preds = %msgSend.nullinit, %msgSend.call
%0 = bitcast %struct.NSConstantString.11.33.55.77.99.121.143.332.1130.1340.2768* @_unnamed_cfstring_591 to i8*
%1 = call i8* @objc_retain(i8* %0) nounwind
br i1 undef, label %msgSend.nullinit33, label %msgSend.call32
msgSend.call32: ; preds = %if.end10
br label %msgSend.cont34
msgSend.nullinit33: ; preds = %if.end10
br label %msgSend.cont34
msgSend.cont34: ; preds = %msgSend.nullinit33, %msgSend.call32
br i1 undef, label %msgSend.nullinit38, label %msgSend.call37
msgSend.call37: ; preds = %msgSend.cont34
br label %msgSend.cont39
msgSend.nullinit38: ; preds = %msgSend.cont34
br label %msgSend.cont39
msgSend.cont39: ; preds = %msgSend.nullinit38, %msgSend.call37
br i1 undef, label %msgSend.nullinit49, label %msgSend.call48
msgSend.call48: ; preds = %msgSend.cont39
br label %msgSend.cont50
msgSend.nullinit49: ; preds = %msgSend.cont39
br label %msgSend.cont50
msgSend.cont50: ; preds = %msgSend.nullinit49, %msgSend.call48
br i1 undef, label %msgSend.nullinit61, label %msgSend.call60
msgSend.call60: ; preds = %msgSend.cont50
br label %msgSend.cont62
msgSend.nullinit61: ; preds = %msgSend.cont50
br label %msgSend.cont62
msgSend.cont62: ; preds = %msgSend.nullinit61, %msgSend.call60
br i1 undef, label %msgSend.nullinit67, label %msgSend.call66
msgSend.call66: ; preds = %msgSend.cont62
br label %msgSend.cont68
msgSend.nullinit67: ; preds = %msgSend.cont62
br label %msgSend.cont68
msgSend.cont68: ; preds = %msgSend.nullinit67, %msgSend.call66
br i1 undef, label %msgSend.nullinit84, label %msgSend.call83
msgSend.call83: ; preds = %msgSend.cont68
br label %msgSend.cont85
msgSend.nullinit84: ; preds = %msgSend.cont68
br label %msgSend.cont85
msgSend.cont85: ; preds = %msgSend.nullinit84, %msgSend.call83
br i1 undef, label %msgSend.nullinit90, label %msgSend.call89
msgSend.call89: ; preds = %msgSend.cont85
br label %msgSend.cont91
msgSend.nullinit90: ; preds = %msgSend.cont85
br label %msgSend.cont91
msgSend.cont91: ; preds = %msgSend.nullinit90, %msgSend.call89
br i1 undef, label %msgSend.nullinit104, label %msgSend.call103
msgSend.call103: ; preds = %msgSend.cont91
br label %msgSend.cont105
msgSend.nullinit104: ; preds = %msgSend.cont91
br label %msgSend.cont105
msgSend.cont105: ; preds = %msgSend.nullinit104, %msgSend.call103
br i1 undef, label %land.lhs.true, label %if.end123
land.lhs.true: ; preds = %msgSend.cont105
br i1 undef, label %if.then117, label %if.end123
if.then117: ; preds = %land.lhs.true
br label %if.end123
if.end123: ; preds = %if.then117, %land.lhs.true, %msgSend.cont105
br i1 undef, label %msgSend.nullinit132, label %msgSend.call131
msgSend.call131: ; preds = %if.end123
br label %msgSend.cont133
msgSend.nullinit132: ; preds = %if.end123
br label %msgSend.cont133
msgSend.cont133: ; preds = %msgSend.nullinit132, %msgSend.call131
br i1 undef, label %msgSend.nullinit139, label %msgSend.call138
msgSend.call138: ; preds = %msgSend.cont133
br label %msgSend.cont140
msgSend.nullinit139: ; preds = %msgSend.cont133
br label %msgSend.cont140
msgSend.cont140: ; preds = %msgSend.nullinit139, %msgSend.call138
br i1 undef, label %if.then151, label %if.end157
if.then151: ; preds = %msgSend.cont140
br label %if.end157
if.end157: ; preds = %if.then151, %msgSend.cont140
br i1 undef, label %msgSend.nullinit164, label %msgSend.call163
msgSend.call163: ; preds = %if.end157
br label %msgSend.cont165
msgSend.nullinit164: ; preds = %if.end157
br label %msgSend.cont165
msgSend.cont165: ; preds = %msgSend.nullinit164, %msgSend.call163
br i1 undef, label %msgSend.nullinit176, label %msgSend.call175
msgSend.call175: ; preds = %msgSend.cont165
br label %msgSend.cont177
msgSend.nullinit176: ; preds = %msgSend.cont165
br label %msgSend.cont177
msgSend.cont177: ; preds = %msgSend.nullinit176, %msgSend.call175
br i1 undef, label %land.lhs.true181, label %if.end202
land.lhs.true181: ; preds = %msgSend.cont177
br i1 undef, label %if.then187, label %if.end202
if.then187: ; preds = %land.lhs.true181
br i1 undef, label %msgSend.nullinit199, label %msgSend.call198
msgSend.call198: ; preds = %if.then187
br label %msgSend.cont200
msgSend.nullinit199: ; preds = %if.then187
br label %msgSend.cont200
msgSend.cont200: ; preds = %msgSend.nullinit199, %msgSend.call198
br label %if.end202
if.end202: ; preds = %msgSend.cont200, %land.lhs.true181, %msgSend.cont177
br i1 undef, label %msgSend.nullinit236, label %msgSend.call235
msgSend.call235: ; preds = %if.end202
br label %msgSend.cont237
msgSend.nullinit236: ; preds = %if.end202
br label %msgSend.cont237
msgSend.cont237: ; preds = %msgSend.nullinit236, %msgSend.call235
br i1 undef, label %msgSend.nullinit254, label %msgSend.call253
msgSend.call253: ; preds = %msgSend.cont237
br label %msgSend.cont255
msgSend.nullinit254: ; preds = %msgSend.cont237
br label %msgSend.cont255
msgSend.cont255: ; preds = %msgSend.nullinit254, %msgSend.call253
br i1 undef, label %msgSend.nullinit269, label %msgSend.call268
msgSend.call268: ; preds = %msgSend.cont255
br label %msgSend.cont270
msgSend.nullinit269: ; preds = %msgSend.cont255
br label %msgSend.cont270
msgSend.cont270: ; preds = %msgSend.nullinit269, %msgSend.call268
br i1 undef, label %msgSend.nullinit281, label %msgSend.call280
msgSend.call280: ; preds = %msgSend.cont270
br label %msgSend.cont282
msgSend.nullinit281: ; preds = %msgSend.cont270
br label %msgSend.cont282
msgSend.cont282: ; preds = %msgSend.nullinit281, %msgSend.call280
br i1 undef, label %msgSend.nullinit287, label %msgSend.call286
msgSend.call286: ; preds = %msgSend.cont282
br label %msgSend.cont288
msgSend.nullinit287: ; preds = %msgSend.cont282
br label %msgSend.cont288
msgSend.cont288: ; preds = %msgSend.nullinit287, %msgSend.call286
br i1 undef, label %msgSend.nullinit303, label %msgSend.call302
msgSend.call302: ; preds = %msgSend.cont288
br label %msgSend.cont304
msgSend.nullinit303: ; preds = %msgSend.cont288
br label %msgSend.cont304
msgSend.cont304: ; preds = %msgSend.nullinit303, %msgSend.call302
br i1 undef, label %msgSend.nullinit344, label %msgSend.call343
msgSend.call343: ; preds = %msgSend.cont304
br label %msgSend.cont345
msgSend.nullinit344: ; preds = %msgSend.cont304
br label %msgSend.cont345
msgSend.cont345: ; preds = %msgSend.nullinit344, %msgSend.call343
br i1 undef, label %msgSend.nullinit350, label %msgSend.call349
msgSend.call349: ; preds = %msgSend.cont345
br label %msgSend.cont351
msgSend.nullinit350: ; preds = %msgSend.cont345
br label %msgSend.cont351
msgSend.cont351: ; preds = %msgSend.nullinit350, %msgSend.call349
br i1 undef, label %msgSend.nullinit366, label %msgSend.call365
msgSend.call365: ; preds = %msgSend.cont351
br label %msgSend.cont367
msgSend.nullinit366: ; preds = %msgSend.cont351
br label %msgSend.cont367
msgSend.cont367: ; preds = %msgSend.nullinit366, %msgSend.call365
br i1 undef, label %msgSend.nullinit376, label %msgSend.call375
msgSend.call375: ; preds = %msgSend.cont367
br label %msgSend.cont377
msgSend.nullinit376: ; preds = %msgSend.cont367
br label %msgSend.cont377
msgSend.cont377: ; preds = %msgSend.nullinit376, %msgSend.call375
br i1 undef, label %if.then384, label %if.else401
if.then384: ; preds = %msgSend.cont377
br i1 undef, label %msgSend.nullinit392, label %msgSend.call391
msgSend.call391: ; preds = %if.then384
br label %msgSend.cont393
msgSend.nullinit392: ; preds = %if.then384
br label %msgSend.cont393
msgSend.cont393: ; preds = %msgSend.nullinit392, %msgSend.call391
br label %if.end418
if.else401: ; preds = %msgSend.cont377
br i1 undef, label %msgSend.nullinit409, label %msgSend.call408
msgSend.call408: ; preds = %if.else401
br label %msgSend.cont410
msgSend.nullinit409: ; preds = %if.else401
br label %msgSend.cont410
msgSend.cont410: ; preds = %msgSend.nullinit409, %msgSend.call408
br label %if.end418
if.end418: ; preds = %msgSend.cont410, %msgSend.cont393
br i1 undef, label %msgSend.nullinit470, label %msgSend.call469
msgSend.call469: ; preds = %if.end418
br label %msgSend.cont471
msgSend.nullinit470: ; preds = %if.end418
br label %msgSend.cont471
msgSend.cont471: ; preds = %msgSend.nullinit470, %msgSend.call469
br i1 undef, label %msgSend.nullinit484, label %msgSend.call483
msgSend.call483: ; preds = %msgSend.cont471
br label %msgSend.cont485
msgSend.nullinit484: ; preds = %msgSend.cont471
br label %msgSend.cont485
msgSend.cont485: ; preds = %msgSend.nullinit484, %msgSend.call483
br i1 undef, label %msgSend.nullinit500, label %msgSend.call499
msgSend.call499: ; preds = %msgSend.cont485
br label %msgSend.cont501
msgSend.nullinit500: ; preds = %msgSend.cont485
br label %msgSend.cont501
msgSend.cont501: ; preds = %msgSend.nullinit500, %msgSend.call499
br i1 undef, label %msgSend.nullinit506, label %msgSend.call505
msgSend.call505: ; preds = %msgSend.cont501
br label %msgSend.cont507
msgSend.nullinit506: ; preds = %msgSend.cont501
br label %msgSend.cont507
msgSend.cont507: ; preds = %msgSend.nullinit506, %msgSend.call505
call void @objc_release(i8* %0) nounwind, !clang.imprecise_release !0
ret void
}
!0 = metadata !{}
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