1 # RUN: llc -emit-call-site-info -start-before=livedebugvalues -filetype=obj -o - %s \
2 # RUN: | llvm-dwarfdump - | FileCheck %s --implicit-check-not=DW_TAG_GNU_call_site_parameter
5 target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
6 target triple = "x86_64-unknown-linux-gnu"
8 ; Function Attrs: nounwind uwtable
9 define void @foo() #0 !dbg !12 {
11 call void @call(i32 123, i32 undef), !dbg !15
15 declare !dbg !4 void @call(i32, i32)
17 attributes #0 = { nounwind uwtable }
20 !llvm.module.flags = !{!8, !9, !10}
23 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 11.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3, splitDebugInlining: false, nameTableKind: None)
24 !1 = !DIFile(filename: "clobber.c", directory: "/")
27 !4 = !DISubprogram(name: "call", scope: !1, file: !1, line: 1, type: !5, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
28 !5 = !DISubroutineType(types: !6)
30 !7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
31 !8 = !{i32 7, !"Dwarf Version", i32 4}
32 !9 = !{i32 2, !"Debug Info Version", i32 3}
33 !10 = !{i32 1, !"wchar_size", i32 4}
34 !11 = !{!"clang version 11.0.0"}
35 !12 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 3, type: !13, scopeLine: 3, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)
36 !13 = !DISubroutineType(types: !14)
38 !15 = !DILocation(line: 5, scope: !12)
39 !16 = !DILocation(line: 6, scope: !12)
45 - { bb: 0, offset: 4, fwdArgRegs:
46 - { arg: 0, reg: '$edi' }
47 - { arg: 1, reg: '$esi' } }
50 frame-setup PUSH64r undef $rax, implicit-def $rsp, implicit $rsp
51 CFI_INSTRUCTION def_cfa_offset 16
52 $esi = MOV32ri 123, debug-location !15
53 $edi = MOV32rr $esi, implicit-def $esi, debug-location !15
54 CALL64pcrel32 @call, csr_64, implicit $rsp, implicit $ssp, implicit killed $edi, implicit undef $esi, implicit-def $rsp, implicit-def $ssp, debug-location !15
55 $rax = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !16
56 CFI_INSTRUCTION def_cfa_offset 8, debug-location !16
57 RETQ debug-location !16
61 # In this test an implicit-def has been added to the MOV32rr instruction to
62 # simulate a situation where one instruction defines two call site worklist
63 # registers, and where we end up with one of the registers being described by
64 # the previous value of the other register that is clobbered by this
67 # In this reproducer we should end up with only one call site entry, with that
70 # This test uses an implicit CHECK-NOT to verify that only one call site
71 # parameter entry is emitted.
73 # A somewhat more realistic scenario would for example be the following in a
77 # $r0, $r1 = mvri $r1, <undescribable value>
80 # CHECK: DW_TAG_GNU_call_site_parameter
81 # CHECK-NEXT: DW_AT_location (DW_OP_reg5 RDI)
82 # CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_constu 0x7b)