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; RUN: opt -deadargelim -S < %s | FileCheck %s
; PR14016
; Built with clang (then manually running -mem2reg with opt) from the following source:
; static void f1(int, ...) {
; }
;
; void f2() {
; f1(1);
; }
; Test both varargs removal and removal of a traditional dead arg together, to
; test both the basic functionality, and a particular wrinkle involving updating
; the function->debug info mapping on update to ensure it's accurate when used
; again for the next removal.
; CHECK: void ()* @_ZL2f1iz, {{.*}} ; [ DW_TAG_subprogram ] {{.*}} [f1]
; Check that debug info metadata for subprograms stores pointers to
; updated LLVM functions.
; Function Attrs: uwtable
define void @_Z2f2v() #0 {
entry:
call void (i32, ...)* @_ZL2f1iz(i32 1), !dbg !15
ret void, !dbg !16
}
; Function Attrs: nounwind uwtable
define internal void @_ZL2f1iz(i32, ...) #1 {
entry:
call void @llvm.dbg.value(metadata i32 %0, i64 0, metadata !17, metadata !18), !dbg !19
ret void, !dbg !20
}
; Function Attrs: nounwind readnone
declare void @llvm.dbg.declare(metadata, metadata, metadata) #2
; Function Attrs: nounwind readnone
declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #2
attributes #0 = { uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { nounwind uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #2 = { nounwind readnone }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!12, !13}
!llvm.ident = !{!14}
!0 = !{!"0x11\004\00clang version 3.6.0 \000\00\000\00\001", !1, !2, !2, !3, !2, !2} ; [ DW_TAG_compile_unit ] [/tmp/dbginfo/dbg.cpp] [DW_LANG_C_plus_plus]
!1 = !{!"dbg.cpp", !"/tmp/dbginfo"}
!2 = !{}
!3 = !{!4, !8}
!4 = !{!"0x2e\00f2\00f2\00_Z2f2v\004\000\001\000\000\00256\000\004", !1, !5, !6, null, void ()* @_Z2f2v, null, null, !2} ; [ DW_TAG_subprogram ] [line 4] [def] [f2]
!5 = !{!"0x29", !1} ; [ DW_TAG_file_type ] [/tmp/dbginfo/dbg.cpp]
!6 = !{!"0x15\00\000\000\000\000\000\000", null, null, null, !7, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!7 = !{null}
!8 = !{!"0x2e\00f1\00f1\00_ZL2f1iz\001\001\001\000\000\00256\000\001", !1, !5, !9, null, void (i32, ...)* @_ZL2f1iz, null, null, !2} ; [ DW_TAG_subprogram ] [line 1] [local] [def] [f1]
!9 = !{!"0x15\00\000\000\000\000\000\000", null, null, null, !10, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!10 = !{null, !11, null}
!11 = !{!"0x24\00int\000\0032\0032\000\000\005", null, null} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed]
!12 = !{i32 2, !"Dwarf Version", i32 4}
!13 = !{i32 2, !"Debug Info Version", i32 2}
!14 = !{!"clang version 3.6.0 "}
!15 = !MDLocation(line: 5, column: 3, scope: !4)
!16 = !MDLocation(line: 6, column: 1, scope: !4)
!17 = !{!"0x101\00\0016777217\000", !8, !5, !11} ; [ DW_TAG_arg_variable ] [line 1]
!18 = !{!"0x102"} ; [ DW_TAG_expression ]
!19 = !MDLocation(line: 1, column: 19, scope: !8)
!20 = !MDLocation(line: 2, column: 1, scope: !8)
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