llvm/test/CodeGen/X86/no-compact-unwind.ll

; RUN: llc < %s -mtriple x86_64-apple-macosx10.8.0 -disable-cfi | FileCheck %s

%"struct.dyld::MappedRanges" = type { [400 x %struct.anon], %"struct.dyld::MappedRanges"* }
%struct.anon = type { %class.ImageLoader*, i64, i64 }
%class.ImageLoader = type { i32 (...)**, i8*, i8*, i32, i64, i64, i32, i32, %"struct.ImageLoader::recursive_lock"*, i16, i16, [4 x i8] }
%"struct.ImageLoader::recursive_lock" = type { i32, i32 }

@G1 = external hidden global %"struct.dyld::MappedRanges", align 8

declare void @OSMemoryBarrier() optsize

; This compact unwind encoding indicates that we could not generate correct
; compact unwind encodings for this function. This then defaults to using the
; DWARF EH frame.
;
; CHECK: .section __LD,__compact_unwind,regular,debug
; CHECK: .quad _func
; CHECK: .long 67108864                ## Compact Unwind Encoding: 0x4000000
; CHECK: .quad 0                       ## Personality Function
; CHECK: .quad 0                       ## LSDA
;
define void @func(%class.ImageLoader* %image) optsize ssp uwtable {
entry:
  br label %for.cond1.preheader

for.cond1.preheader:                              ; preds = %for.inc10, %entry
  %p.019 = phi %"struct.dyld::MappedRanges"* [ @G1, %entry ], [ %1, %for.inc10 ]
  br label %for.body3

for.body3:                                        ; preds = %for.inc, %for.cond1.preheader
  %indvars.iv = phi i64 [ 0, %for.cond1.preheader ], [ %indvars.iv.next, %for.inc ]
  %image4 = getelementptr inbounds %"struct.dyld::MappedRanges"* %p.019, i64 0, i32 0, i64 %indvars.iv, i32 0
  %0 = load %class.ImageLoader** %image4, align 8
  %cmp5 = icmp eq %class.ImageLoader* %0, %image
  br i1 %cmp5, label %if.then, label %for.inc

if.then:                                          ; preds = %for.body3
  tail call void @OSMemoryBarrier() optsize
  store %class.ImageLoader* null, %class.ImageLoader** %image4, align 8
  br label %for.inc

for.inc:                                          ; preds = %if.then, %for.body3
  %indvars.iv.next = add i64 %indvars.iv, 1
  %lftr.wideiv = trunc i64 %indvars.iv.next to i32
  %exitcond = icmp eq i32 %lftr.wideiv, 400
  br i1 %exitcond, label %for.inc10, label %for.body3

for.inc10:                                        ; preds = %for.inc
  %next = getelementptr inbounds %"struct.dyld::MappedRanges"* %p.019, i64 0, i32 1
  %1 = load %"struct.dyld::MappedRanges"** %next, align 8
  %cmp = icmp eq %"struct.dyld::MappedRanges"* %1, null
  br i1 %cmp, label %for.end11, label %for.cond1.preheader

for.end11:                                        ; preds = %for.inc10
  ret void
}