1; RUN: llc -O2 < %s | FileCheck %s 2; RUN: llc -O2 -regalloc=basic < %s | FileCheck %s 3target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64" 4target triple = "x86_64-apple-darwin10" 5 6%struct.a = type { i32, %struct.a* } 7 8@llvm.used = appending global [1 x i8*] [i8* bitcast (i8* (%struct.a*)* @bar to i8*)], section "llvm.metadata" ; <[1 x i8*]*> [#uses=0] 9 10define i8* @bar(%struct.a* %myvar) nounwind optsize noinline ssp { 11entry: 12 tail call void @llvm.dbg.value(metadata %struct.a* %myvar, i64 0, metadata !8, metadata !{!"0x102"}) 13 %0 = getelementptr inbounds %struct.a* %myvar, i64 0, i32 0, !dbg !28 ; <i32*> [#uses=1] 14 %1 = load i32* %0, align 8, !dbg !28 ; <i32> [#uses=1] 15 tail call void @foo(i32 %1) nounwind optsize noinline ssp, !dbg !28 16 %2 = bitcast %struct.a* %myvar to i8*, !dbg !30 ; <i8*> [#uses=1] 17 ret i8* %2, !dbg !30 18} 19 20declare void @foo(i32) nounwind optsize noinline ssp 21 22declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnone 23 24!llvm.dbg.cu = !{!2} 25!llvm.module.flags = !{!38} 26 27!0 = !{!"0x34\00ret\00ret\00\007\000\001", !1, !1, !3, null, null} ; [ DW_TAG_variable ] 28!1 = !{!"0x29", !36} ; [ DW_TAG_file_type ] 29!2 = !{!"0x11\001\004.2.1 (Based on Apple Inc. build 5658) (LLVM build)\001\00\000\00\001", !36, !37, !37, !32, !31, !37} ; [ DW_TAG_compile_unit ] 30!3 = !{!"0x24\00int\000\0032\0032\000\000\005", !36, !1} ; [ DW_TAG_base_type ] 31!4 = !{!"0x101\00x\0012\000", !5, !1, !3} ; [ DW_TAG_arg_variable ] 32!5 = !{!"0x2e\00foo\00foo\00foo\0013\000\001\000\006\000\001\0013", !36, !1, !6, null, void (i32)* @foo, null, null, !33} ; [ DW_TAG_subprogram ] 33!6 = !{!"0x15\00\000\000\000\000\000\000", !36, !1, null, !7, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ] 34!7 = !{null, !3} 35!8 = !{!"0x101\00myvar\0017\000", !9, !1, !13} ; [ DW_TAG_arg_variable ] 36!9 = !{!"0x2e\00bar\00bar\00bar\0017\000\001\000\006\000\001\0017", !36, !1, !10, null, i8* (%struct.a*)* @bar, null, null, !34} ; [ DW_TAG_subprogram ] 37!10 = !{!"0x15\00\000\000\000\000\000\000", !36, !1, null, !11, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ] 38!11 = !{!12, !13} 39!12 = !{!"0xf\00\000\0064\0064\000\000", !36, !1, null} ; [ DW_TAG_pointer_type ] 40!13 = !{!"0xf\00\000\0064\0064\000\000", !36, !1, !14} ; [ DW_TAG_pointer_type ] 41!14 = !{!"0x13\00a\002\00128\0064\000\000\000", !36, !1, null, !15, null, null, null} ; [ DW_TAG_structure_type ] [a] [line 2, size 128, align 64, offset 0] [def] [from ] 42!15 = !{!16, !17} 43!16 = !{!"0xd\00c\003\0032\0032\000\000", !36, !14, !3} ; [ DW_TAG_member ] 44!17 = !{!"0xd\00d\004\0064\0064\0064\000", !36, !14, !13} ; [ DW_TAG_member ] 45!18 = !{!"0x101\00argc\0022\000", !19, !1, !3} ; [ DW_TAG_arg_variable ] 46!19 = !{!"0x2e\00main\00main\00main\0022\000\001\000\006\000\001\0022", !36, !1, !20, null, null, null, null, !35} ; [ DW_TAG_subprogram ] 47!20 = !{!"0x15\00\000\000\000\000\000\000", !36, !1, null, !21, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ] 48!21 = !{!3, !3, !22} 49!22 = !{!"0xf\00\000\0064\0064\000\000", !36, !1, !23} ; [ DW_TAG_pointer_type ] 50!23 = !{!"0xf\00\000\0064\0064\000\000", !36, !1, !24} ; [ DW_TAG_pointer_type ] 51!24 = !{!"0x24\00char\000\008\008\000\000\006", !36, !1} ; [ DW_TAG_base_type ] 52!25 = !{!"0x101\00argv\0022\000", !19, !1, !22} ; [ DW_TAG_arg_variable ] 53!26 = !{!"0x100\00e\0023\000", !27, !1, !14} ; [ DW_TAG_auto_variable ] 54!27 = !{!"0xb\0022\000\000", !36, !19} ; [ DW_TAG_lexical_block ] 55!28 = !MDLocation(line: 18, scope: !29) 56!29 = !{!"0xb\0017\000\001", !36, !9} ; [ DW_TAG_lexical_block ] 57!30 = !MDLocation(line: 19, scope: !29) 58!31 = !{!0} 59!32 = !{!5, !9, !19} 60!33 = !{!4} 61!34 = !{!8} 62!35 = !{!18, !25, !26} 63!36 = !{!"foo.c", !"/tmp/"} 64!37 = !{} 65 66; The variable bar:myvar changes registers after the first movq. 67; It is cobbered by popq %rbx 68; CHECK: movq 69; CHECK-NEXT: [[LABEL:Ltmp[0-9]*]] 70; CHECK: .loc 1 19 0 71; CHECK: popq 72; CHECK-NEXT: [[CLOBBER:Ltmp[0-9]*]] 73 74 75; CHECK: Ldebug_loc0: 76; CHECK-NEXT: [[SET1:.*]] = Lfunc_begin0-Lfunc_begin0 77; CHECK-NEXT: .quad [[SET1]] 78; CHECK-NEXT: [[SET2:.*]] = [[LABEL]]-Lfunc_begin0 79; CHECK-NEXT: .quad [[SET2]] 80; CHECK-NEXT: Lset{{.*}} = Ltmp{{.*}}-Ltmp{{.*}} ## Loc expr size 81; CHECK-NEXT: .short Lset{{.*}} 82; CHECK-NEXT: Ltmp{{.*}}: 83; CHECK-NEXT: .byte 85 84; CHECK-NEXT: Ltmp{{.*}}: 85; CHECK-NEXT: [[SET3:.*]] = [[LABEL]]-Lfunc_begin0 86; CHECK-NEXT: .quad [[SET3]] 87; CHECK-NEXT: [[SET4:.*]] = [[CLOBBER]]-Lfunc_begin0 88; CHECK-NEXT: .quad [[SET4]] 89; CHECK-NEXT: Lset{{.*}} = Ltmp{{.*}}-Ltmp{{.*}} ## Loc expr size 90; CHECK-NEXT: .short Lset{{.*}} 91; CHECK-NEXT: Ltmp{{.*}}: 92; CHECK-NEXT: .byte 83 93; CHECK-NEXT: Ltmp{{.*}}: 94!38 = !{i32 1, !"Debug Info Version", i32 2} 95