1 ; RUN: llc -filetype=asm %s -o - | FileCheck %s
2 ; Test large integral function arguments passed in multiple registers.
4 ; Generated from (-Os):
7 ; void write(signed long long offset);
8 ; signed long long foo(signed long long offset) {
13 source_filename = "test.ii"
14 target datalayout = "e-m:o-p:32:32-i64:64-a:0:32-n32-S128"
15 target triple = "thumbv7k-apple-watchos2.0.0"
17 @g = local_unnamed_addr global i64 0, align 8, !dbg !0
19 ; Function Attrs: optsize ssp
20 define i64 @_Z3foox(i64 returned) local_unnamed_addr #0 !dbg !13 {
21 tail call void @llvm.dbg.value(metadata i64 %0, metadata !17, metadata !DIExpression()), !dbg !18
22 ; CHECK: @DEBUG_VALUE: foo:offset <- [DW_OP_LLVM_fragment 0 32] $r5
23 ; CHECK: @DEBUG_VALUE: foo:offset <- [DW_OP_LLVM_fragment 32 32] $r4
25 %2 = load i64, i64* @g, align 8, !dbg !19, !tbaa !21
26 %3 = icmp eq i64 %2, %0, !dbg !19
27 br i1 %3, label %5, label %4, !dbg !25
29 ; <label>:4: ; preds = %1
30 tail call void @_Z5writex(i64 %0) #3, !dbg !26
33 ; <label>:5: ; preds = %1, %4
37 ; Function Attrs: optsize
38 declare void @_Z5writex(i64) local_unnamed_addr #1
40 ; Function Attrs: nounwind readnone speculatable
41 declare void @llvm.dbg.value(metadata, metadata, metadata) #2
43 attributes #0 = { optsize ssp }
44 attributes #1 = { optsize }
45 attributes #2 = { nounwind readnone speculatable }
46 attributes #3 = { optsize }
49 !llvm.module.flags = !{!7, !8, !9, !10, !11}
51 !0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
52 !1 = distinct !DIGlobalVariable(name: "g", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true)
53 !2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "clang version 6.0.0 (trunk 312148) (llvm/trunk 312165)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5)
54 !3 = !DIFile(filename: "test.ii", directory: "/")
57 !6 = !DIBasicType(name: "long long int", size: 64, encoding: DW_ATE_signed)
58 !7 = !{i32 2, !"Dwarf Version", i32 4}
59 !8 = !{i32 2, !"Debug Info Version", i32 3}
60 !9 = !{i32 1, !"wchar_size", i32 4}
61 !10 = !{i32 1, !"min_enum_size", i32 4}
62 !11 = !{i32 7, !"PIC Level", i32 2}
63 !13 = distinct !DISubprogram(name: "foo", linkageName: "_Z3foox", scope: !3, file: !3, line: 3, type: !14, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: true, unit: !2, retainedNodes: !16)
64 !14 = !DISubroutineType(types: !15)
67 !17 = !DILocalVariable(name: "offset", arg: 1, scope: !13, file: !3, line: 3, type: !6)
68 !18 = !DILocation(line: 3, scope: !13)
69 !19 = !DILocation(line: 4, scope: !20)
70 !20 = distinct !DILexicalBlock(scope: !13, file: !3, line: 4)
71 !21 = !{!22, !22, i64 0}
72 !22 = !{!"long long", !23, i64 0}
73 !23 = !{!"omnipotent char", !24, i64 0}
74 !24 = !{!"Simple C++ TBAA"}
75 !25 = !DILocation(line: 4, scope: !13)
76 !26 = !DILocation(line: 5, scope: !20)
77 !27 = !DILocation(line: 6, scope: !13)