Remove support for DIVariable's FlagIndirectVariable and expect

frontends to use a DIExpression with a DW_OP_deref instead.

This is not only a much more natural place for this informationl; there
is also a technical reason: The FlagIndirectVariable is used to mark a
variable that is turned into a reference by virtue of the calling
convention; this happens for example to aggregate return values.
The inliner, for example, may actually need to undo this indirection to
correctly represent the value in its new context. This is impossible to
implement because the DIVariable can't be safely modified. We can however
safely construct a new DIExpression on the fly.

llvm-svn: 226476

1 files changed, 2 insertions, 2 deletions

diff --git a/llvm/test/DebugInfo/AArch64/struct_by_value.ll b/llvm/test/DebugInfo/AArch64/struct_by_value.ll
index f66f56cef5b..9996d276927 100644
--- a/llvm/test/DebugInfo/AArch64/struct_by_value.ll
+++ b/llvm/test/DebugInfo/AArch64/struct_by_value.ll
@@ -32,7 +32,7 @@ target triple = "arm64-apple-ios3.0.0"
 ; Function Attrs: nounwind ssp
 define i32 @return_five_int(%struct.five* %f) #0 {
 entry:
-  call void @llvm.dbg.declare(metadata %struct.five* %f, metadata !17, metadata !{!"0x102"}), !dbg !18
+  call void @llvm.dbg.declare(metadata %struct.five* %f, metadata !17, metadata !{!"0x102\006"}), !dbg !18
   %a = getelementptr inbounds %struct.five* %f, i32 0, i32 0, !dbg !19
   %0 = load i32* %a, align 4, !dbg !19
   ret i32 %0, !dbg !19
@@ -64,7 +64,7 @@ attributes #1 = { nounwind readnone }
 !14 = !{!"0xd\00d\006\0032\0032\0096\000", !1, !9, !8} ; [ DW_TAG_member ] [d] [line 6, size 32, align 32, offset 96] [from int]
 !15 = !{!"0xd\00e\007\0032\0032\00128\000", !1, !9, !8} ; [ DW_TAG_member ] [e] [line 7, size 32, align 32, offset 128] [from int]
 !16 = !{i32 2, !"Dwarf Version", i32 2}
-!17 = !{!"0x101\00f\0016777229\008192", !4, !5, !9} ; [ DW_TAG_arg_variable ] [f] [line 13]
+!17 = !{!"0x101\00f\0016777229\000", !4, !5, !9} ; [ DW_TAG_arg_variable ] [f] [line 13]
 !18 = !MDLocation(line: 13, scope: !4)
 !19 = !MDLocation(line: 16, scope: !4)
 !20 = !{i32 1, !"Debug Info Version", i32 2}