1 ; RUN: llc < %s | FileCheck %s
3 ; The test code is generated from the following source code:
5 ; 1 extern int bar(int x);
7 ; 3 int foo(int *begin, int *end) {
21 ; CHECK-NOT: # %for.body
23 ; CHECK-NEXT: je [[BB:.LBB[^ ]+]]
25 ; CHECK: xorl %ebp, %ebp
26 ; CHECK-NEXT: .LBB{{.*}} # %for.end
28 target triple = "x86_64-unknown-linux-gnu"
30 define i32 @foo(i32* readonly %begin, i32* readnone %end) !dbg !4 {
32 %cmp6 = icmp eq i32* %begin, %end, !dbg !9
33 br i1 %cmp6, label %for.end, label %for.body.preheader, !dbg !12
35 for.body.preheader: ; preds = %entry
36 br label %for.body, !dbg !13
38 for.body: ; preds = %for.body.preheader, %for.body
39 %ret.08 = phi i32 [ %add, %for.body ], [ 0, %for.body.preheader ]
40 %i.07 = phi i32* [ %incdec.ptr, %for.body ], [ %begin, %for.body.preheader ]
41 %0 = load i32, i32* %i.07, align 4, !dbg !13, !tbaa !15
42 %call = tail call i32 @bar(i32 %0), !dbg !19
43 %add = add nsw i32 %call, %ret.08, !dbg !20
44 %incdec.ptr = getelementptr inbounds i32, i32* %i.07, i64 1, !dbg !21
45 %cmp = icmp eq i32* %incdec.ptr, %end, !dbg !9
46 br i1 %cmp, label %for.end.loopexit, label %for.body, !dbg !12, !llvm.loop !22
48 for.end.loopexit: ; preds = %for.body
49 br label %for.end, !dbg !24
51 for.end: ; preds = %for.end.loopexit, %entry
52 %ret.0.lcssa = phi i32 [ 0, %entry ], [ %add, %for.end.loopexit ]
53 ret i32 %ret.0.lcssa, !dbg !24
59 !llvm.module.flags = !{!2, !3}
61 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, emissionKind: FullDebug)
62 !1 = !DIFile(filename: "foo.c", directory: "b/")
63 !2 = !{i32 2, !"Dwarf Version", i32 4}
64 !3 = !{i32 2, !"Debug Info Version", i32 3}
65 !4 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 3, type: !5, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: true, unit: !0)
66 !5 = !DISubroutineType(types: !6)
68 !7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
69 !8 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !7, size: 64)
70 !9 = !DILocation(line: 8, column: 9, scope: !10)
71 !10 = distinct !DILexicalBlock(scope: !11, file: !1, line: 6, column: 3)
72 !11 = distinct !DILexicalBlock(scope: !4, file: !1, line: 6, column: 3)
73 !12 = !DILocation(line: 6, column: 3, scope: !11)
74 !13 = !DILocation(line: 11, column: 18, scope: !14)
75 !14 = distinct !DILexicalBlock(scope: !10, file: !1, line: 10, column: 3)
76 !15 = !{!16, !16, i64 0}
77 !16 = !{!"int", !17, i64 0}
78 !17 = !{!"omnipotent char", !18, i64 0}
79 !18 = !{!"Simple C/C++ TBAA"}
80 !19 = !DILocation(line: 11, column: 14, scope: !14)
81 !20 = !DILocation(line: 11, column: 11, scope: !14)
82 !21 = !DILocation(line: 9, column: 8, scope: !10)
83 !22 = distinct !{!22, !12, !23}
84 !23 = !DILocation(line: 12, column: 3, scope: !11)
85 !24 = !DILocation(line: 13, column: 3, scope: !4)