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llvm-6502/test/CodeGen/ARM/2010-08-04-StackVariable.ll
Duncan P. N. Exon Smith 1ef70ff39b IR: Make metadata typeless in assembly 
Now that `Metadata` is typeless, reflect that in the assembly.  These
are the matching assembly changes for the metadata/value split in
r223802.

  - Only use the `metadata` type when referencing metadata from a call
    intrinsic -- i.e., only when it's used as a `Value`.

  - Stop pretending that `ValueAsMetadata` is wrapped in an `MDNode`
    when referencing it from call intrinsics.

So, assembly like this:

    define @foo(i32 %v) {
      call void @llvm.foo(metadata !{i32 %v}, metadata !0)
      call void @llvm.foo(metadata !{i32 7}, metadata !0)
      call void @llvm.foo(metadata !1, metadata !0)
      call void @llvm.foo(metadata !3, metadata !0)
      call void @llvm.foo(metadata !{metadata !3}, metadata !0)
      ret void, !bar !2
    }
    !0 = metadata !{metadata !2}
    !1 = metadata !{i32* @global}
    !2 = metadata !{metadata !3}
    !3 = metadata !{}

turns into this:

    define @foo(i32 %v) {
      call void @llvm.foo(metadata i32 %v, metadata !0)
      call void @llvm.foo(metadata i32 7, metadata !0)
      call void @llvm.foo(metadata i32* @global, metadata !0)
      call void @llvm.foo(metadata !3, metadata !0)
      call void @llvm.foo(metadata !{!3}, metadata !0)
      ret void, !bar !2
    }
    !0 = !{!2}
    !1 = !{i32* @global}
    !2 = !{!3}
    !3 = !{}

I wrote an upgrade script that handled almost all of the tests in llvm
and many of the tests in cfe (even handling many `CHECK` lines).  I've
attached it (or will attach it in a moment if you're speedy) to PR21532
to help everyone update their out-of-tree testcases.

This is part of PR21532.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224257 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-15 19:07:53 +00:00

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; RUN: llc -O0 -mtriple=arm-apple-darwin < %s | grep DW_OP_breg
; Use DW_OP_breg in variable's location expression if the variable is in a stack slot.
%struct.SVal = type { i8*, i32 }
define i32 @_Z3fooi4SVal(i32 %i, %struct.SVal* noalias %location) nounwind ssp {
entry:
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
call void @llvm.dbg.value(metadata i32 %i, i64 0, metadata !23, metadata !{!"0x102"}), !dbg !24
call void @llvm.dbg.value(metadata %struct.SVal* %location, i64 0, metadata !25, metadata !{!"0x102"}), !dbg !24
%0 = icmp ne i32 %i, 0, !dbg !27 ; <i1> [#uses=1]
br i1 %0, label %bb, label %bb1, !dbg !27
bb: ; preds = %entry
%1 = getelementptr inbounds %struct.SVal* %location, i32 0, i32 1, !dbg !29 ; <i32*> [#uses=1]
%2 = load i32* %1, align 8, !dbg !29 ; <i32> [#uses=1]
%3 = add i32 %2, %i, !dbg !29 ; <i32> [#uses=1]
br label %bb2, !dbg !29
bb1: ; preds = %entry
%4 = getelementptr inbounds %struct.SVal* %location, i32 0, i32 1, !dbg !30 ; <i32*> [#uses=1]
%5 = load i32* %4, align 8, !dbg !30 ; <i32> [#uses=1]
%6 = sub i32 %5, 1, !dbg !30 ; <i32> [#uses=1]
br label %bb2, !dbg !30
bb2: ; preds = %bb1, %bb
%.0 = phi i32 [ %3, %bb ], [ %6, %bb1 ] ; <i32> [#uses=1]
br label %return, !dbg !29
return: ; preds = %bb2
ret i32 %.0, !dbg !29
}
define linkonce_odr void @_ZN4SValC1Ev(%struct.SVal* %this) nounwind ssp align 2 {
entry:
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
call void @llvm.dbg.value(metadata %struct.SVal* %this, i64 0, metadata !31, metadata !{!"0x102"}), !dbg !34
%0 = getelementptr inbounds %struct.SVal* %this, i32 0, i32 0, !dbg !34 ; <i8**> [#uses=1]
store i8* null, i8** %0, align 8, !dbg !34
%1 = getelementptr inbounds %struct.SVal* %this, i32 0, i32 1, !dbg !34 ; <i32*> [#uses=1]
store i32 0, i32* %1, align 8, !dbg !34
br label %return, !dbg !34
return: ; preds = %entry
ret void, !dbg !35
}
declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone
define i32 @main() nounwind ssp {
entry:
%0 = alloca %struct.SVal ; <%struct.SVal*> [#uses=3]
%v = alloca %struct.SVal ; <%struct.SVal*> [#uses=4]
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
call void @llvm.dbg.declare(metadata %struct.SVal* %v, metadata !38, metadata !{!"0x102"}), !dbg !41
call void @_ZN4SValC1Ev(%struct.SVal* %v) nounwind, !dbg !41
%1 = getelementptr inbounds %struct.SVal* %v, i32 0, i32 1, !dbg !42 ; <i32*> [#uses=1]
store i32 1, i32* %1, align 8, !dbg !42
%2 = getelementptr inbounds %struct.SVal* %0, i32 0, i32 0, !dbg !43 ; <i8**> [#uses=1]
%3 = getelementptr inbounds %struct.SVal* %v, i32 0, i32 0, !dbg !43 ; <i8**> [#uses=1]
%4 = load i8** %3, align 8, !dbg !43 ; <i8*> [#uses=1]
store i8* %4, i8** %2, align 8, !dbg !43
%5 = getelementptr inbounds %struct.SVal* %0, i32 0, i32 1, !dbg !43 ; <i32*> [#uses=1]
%6 = getelementptr inbounds %struct.SVal* %v, i32 0, i32 1, !dbg !43 ; <i32*> [#uses=1]
%7 = load i32* %6, align 8, !dbg !43 ; <i32> [#uses=1]
store i32 %7, i32* %5, align 8, !dbg !43
%8 = call i32 @_Z3fooi4SVal(i32 2, %struct.SVal* noalias %0) nounwind, !dbg !43 ; <i32> [#uses=0]
call void @llvm.dbg.value(metadata i32 %8, i64 0, metadata !44, metadata !{!"0x102"}), !dbg !43
br label %return, !dbg !45
return: ; preds = %entry
ret i32 0, !dbg !45
}
declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnone
!llvm.dbg.cu = !{!3}
!llvm.module.flags = !{!49}
!0 = !{!"0x2e\00SVal\00SVal\00\0011\000\000\000\006\000\000\000", !48, !1, !14, null, null, null, null, null} ; [ DW_TAG_subprogram ]
!1 = !{!"0x13\00SVal\001\00128\0064\000\000\000", !48, null, null, !4, null, null, null} ; [ DW_TAG_structure_type ] [SVal] [line 1, size 128, align 64, offset 0] [def] [from ]
!2 = !{!"0x29", !48} ; [ DW_TAG_file_type ]
!3 = !{!"0x11\004\004.2.1 (Based on Apple Inc. build 5658) (LLVM build)\000\00\000\00\001", !48, !47, !47, !46, !47, !47} ; [ DW_TAG_compile_unit ]
!4 = !{!5, !7, !0, !9}
!5 = !{!"0xd\00Data\007\0064\0064\000\000", !48, !1, !6} ; [ DW_TAG_member ]
!6 = !{!"0xf\00\000\0064\0064\000\000", !48, null, null} ; [ DW_TAG_pointer_type ]
!7 = !{!"0xd\00Kind\008\0032\0032\0064\000", !48, !1, !8} ; [ DW_TAG_member ]
!8 = !{!"0x24\00unsigned int\000\0032\0032\000\000\007", !48, null} ; [ DW_TAG_base_type ]
!9 = !{!"0x2e\00~SVal\00~SVal\00\0012\000\000\000\006\000\000\000", !48, !1, !10, null, null, null, null, null} ; [ DW_TAG_subprogram ]
!10 = !{!"0x15\00\000\000\000\000\000\000", !48, null, null, !11, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!11 = !{null, !12, !13}
!12 = !{!"0xf\00\000\0064\0064\000\0064", !48, null, !1} ; [ DW_TAG_pointer_type ]
!13 = !{!"0x24\00int\000\0032\0032\000\000\005", !48, null} ; [ DW_TAG_base_type ]
!14 = !{!"0x15\00\000\000\000\000\000\000", !48, null, null, !15, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!15 = !{null, !12}
!16 = !{!"0x2e\00SVal\00SVal\00_ZN4SValC1Ev\0011\000\001\000\006\000\000\000", !48, !1, !14, null, void (%struct.SVal*)* @_ZN4SValC1Ev, null, null, null} ; [ DW_TAG_subprogram ]
!17 = !{!"0x2e\00foo\00foo\00_Z3fooi4SVal\0016\000\001\000\006\000\000\000", !48, !2, !18, null, i32 (i32, %struct.SVal*)* @_Z3fooi4SVal, null, null, null} ; [ DW_TAG_subprogram ]
!18 = !{!"0x15\00\000\000\000\000\000\000", !48, null, null, !19, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!19 = !{!13, !13, !1}
!20 = !{!"0x2e\00main\00main\00main\0023\000\001\000\006\000\000\000", !48, !2, !21, null, i32 ()* @main, null, null, null} ; [ DW_TAG_subprogram ]
!21 = !{!"0x15\00\000\000\000\000\000\000", !48, null, null, !22, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!22 = !{!13}
!23 = !{!"0x101\00i\0016\000", !17, !2, !13} ; [ DW_TAG_arg_variable ]
!24 = !{i32 16, i32 0, !17, null}
!25 = !{!"0x101\00location\0016\000", !17, !2, !26} ; [ DW_TAG_arg_variable ]
!26 = !{!"0x10\00SVal\000\0064\0064\000\000", !48, !2, !1} ; [ DW_TAG_reference_type ]
!27 = !{i32 17, i32 0, !28, null}
!28 = !{!"0xb\0016\000\002", !2, !17} ; [ DW_TAG_lexical_block ]
!29 = !{i32 18, i32 0, !28, null}
!30 = !{i32 20, i32 0, !28, null}
!31 = !{!"0x101\00this\0011\000", !16, !2, !32} ; [ DW_TAG_arg_variable ]
!32 = !{!"0x26\00\000\0064\0064\000\0064", !48, !2, !33} ; [ DW_TAG_const_type ]
!33 = !{!"0xf\00\000\0064\0064\000\000", !48, !2, !1} ; [ DW_TAG_pointer_type ]
!34 = !{i32 11, i32 0, !16, null}
!35 = !{i32 11, i32 0, !36, null}
!36 = !{!"0xb\0011\000\001", !48, !37} ; [ DW_TAG_lexical_block ]
!37 = !{!"0xb\0011\000\000", !48, !16} ; [ DW_TAG_lexical_block ]
!38 = !{!"0x100\00v\0024\000", !39, !2, !1} ; [ DW_TAG_auto_variable ]
!39 = !{!"0xb\0023\000\004", !48, !40} ; [ DW_TAG_lexical_block ]
!40 = !{!"0xb\0023\000\003", !48, !20} ; [ DW_TAG_lexical_block ]
!41 = !{i32 24, i32 0, !39, null}
!42 = !{i32 25, i32 0, !39, null}
!43 = !{i32 26, i32 0, !39, null}
!44 = !{!"0x100\00k\0026\000", !39, !2, !13} ; [ DW_TAG_auto_variable ]
!45 = !{i32 27, i32 0, !39, null}
!46 = !{!16, !17, !20}
!47 = !{}
!48 = !{!"small.cc", !"/Users/manav/R8248330"}
!49 = !{i32 1, !"Debug Info Version", i32 2}
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