76 lines
4.8 KiB
LLVM
76 lines
4.8 KiB
LLVM
; RUN: llc < %s
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target datalayout = "e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:32-f32:32:32-f64:32:32-v64:64:64-v128:128:128-a0:0:32-n32"
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target triple = "thumbv7-apple-darwin3.0.0-iphoneos"
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@length = common global i32 0, align 4 ; <i32*> [#uses=1]
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define void @x0(i8* nocapture %buf, i32 %nbytes) nounwind optsize {
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entry:
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tail call void @llvm.dbg.value(metadata !{i8* %buf}, i64 0, metadata !0), !dbg !15
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tail call void @llvm.dbg.value(metadata !{i32 %nbytes}, i64 0, metadata !8), !dbg !16
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%tmp = load i32* @length, !dbg !17 ; <i32> [#uses=3]
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%cmp = icmp eq i32 %tmp, -1, !dbg !17 ; <i1> [#uses=1]
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%cmp.not = xor i1 %cmp, true ; <i1> [#uses=1]
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%cmp3 = icmp ult i32 %tmp, %nbytes, !dbg !17 ; <i1> [#uses=1]
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%or.cond = and i1 %cmp.not, %cmp3 ; <i1> [#uses=1]
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tail call void @llvm.dbg.value(metadata !{i32 %tmp}, i64 0, metadata !8), !dbg !17
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%nbytes.addr.0 = select i1 %or.cond, i32 %tmp, i32 %nbytes ; <i32> [#uses=1]
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tail call void @llvm.dbg.value(metadata !18, i64 0, metadata !10), !dbg !19
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br label %while.cond, !dbg !20
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while.cond: ; preds = %while.body, %entry
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%0 = phi i32 [ 0, %entry ], [ %inc, %while.body ] ; <i32> [#uses=3]
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%buf.addr.0 = getelementptr i8* %buf, i32 %0 ; <i8*> [#uses=1]
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%cmp7 = icmp ult i32 %0, %nbytes.addr.0, !dbg !20 ; <i1> [#uses=1]
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br i1 %cmp7, label %land.rhs, label %while.end, !dbg !20
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land.rhs: ; preds = %while.cond
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%call = tail call i32 @x1() nounwind optsize, !dbg !20 ; <i32> [#uses=2]
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%cmp9 = icmp eq i32 %call, -1, !dbg !20 ; <i1> [#uses=1]
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br i1 %cmp9, label %while.end, label %while.body, !dbg !20
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while.body: ; preds = %land.rhs
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%conv = trunc i32 %call to i8, !dbg !21 ; <i8> [#uses=1]
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store i8 %conv, i8* %buf.addr.0, !dbg !21
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%inc = add i32 %0, 1, !dbg !23 ; <i32> [#uses=1]
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br label %while.cond, !dbg !24
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while.end: ; preds = %land.rhs, %while.cond
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ret void, !dbg !25
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}
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declare i32 @x1() optsize
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declare void @llvm.dbg.value(metadata, i64, metadata) nounwind readnone
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!llvm.dbg.lv.fn = !{!0, !8, !10, !12}
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!llvm.dbg.gv = !{!14}
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!0 = metadata !{i32 524545, metadata !1, metadata !"buf", metadata !2, i32 4, metadata !6} ; [ DW_TAG_arg_variable ]
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!1 = metadata !{i32 524334, i32 0, metadata !2, metadata !"x0", metadata !"x0", metadata !"x0", metadata !2, i32 5, metadata !4, i1 false, i1 true, i32 0, i32 0, null, i1 false, i1 false, null} ; [ DW_TAG_subprogram ]
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!2 = metadata !{i32 524329, metadata !"t.c", metadata !"/private/tmp", metadata !3} ; [ DW_TAG_file_type ]
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!3 = metadata !{i32 524305, i32 0, i32 12, metadata !"t.c", metadata !".", metadata !"clang 2.0", i1 true, i1 true, metadata !"", i32 0} ; [ DW_TAG_compile_unit ]
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!4 = metadata !{i32 524309, metadata !2, metadata !"", metadata !2, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !5, i32 0, null} ; [ DW_TAG_subroutine_type ]
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!5 = metadata !{null}
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!6 = metadata !{i32 524303, metadata !2, metadata !"", metadata !2, i32 0, i64 32, i64 32, i64 0, i32 0, metadata !7} ; [ DW_TAG_pointer_type ]
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!7 = metadata !{i32 524324, metadata !2, metadata !"unsigned char", metadata !2, i32 0, i64 8, i64 8, i64 0, i32 0, i32 8} ; [ DW_TAG_base_type ]
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!8 = metadata !{i32 524545, metadata !1, metadata !"nbytes", metadata !2, i32 4, metadata !9} ; [ DW_TAG_arg_variable ]
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!9 = metadata !{i32 524324, metadata !2, metadata !"unsigned long", metadata !2, i32 0, i64 32, i64 32, i64 0, i32 0, i32 7} ; [ DW_TAG_base_type ]
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!10 = metadata !{i32 524544, metadata !11, metadata !"nread", metadata !2, i32 6, metadata !9} ; [ DW_TAG_auto_variable ]
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!11 = metadata !{i32 524299, metadata !1, i32 5, i32 1} ; [ DW_TAG_lexical_block ]
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!12 = metadata !{i32 524544, metadata !11, metadata !"c", metadata !2, i32 7, metadata !13} ; [ DW_TAG_auto_variable ]
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!13 = metadata !{i32 524324, metadata !2, metadata !"int", metadata !2, i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ]
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!14 = metadata !{i32 524340, i32 0, metadata !2, metadata !"length", metadata !"length", metadata !"length", metadata !2, i32 1, metadata !13, i1 false, i1 true, i32* @length} ; [ DW_TAG_variable ]
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!15 = metadata !{i32 4, i32 24, metadata !1, null}
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!16 = metadata !{i32 4, i32 43, metadata !1, null}
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!17 = metadata !{i32 9, i32 2, metadata !11, null}
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!18 = metadata !{i32 0}
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!19 = metadata !{i32 10, i32 2, metadata !11, null}
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!20 = metadata !{i32 11, i32 2, metadata !11, null}
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!21 = metadata !{i32 12, i32 3, metadata !22, null}
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!22 = metadata !{i32 524299, metadata !11, i32 11, i32 45} ; [ DW_TAG_lexical_block ]
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!23 = metadata !{i32 13, i32 3, metadata !22, null}
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!24 = metadata !{i32 14, i32 2, metadata !22, null}
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!25 = metadata !{i32 15, i32 1, metadata !11, null}
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