[llvm] r201267 - DebugInfo: Demonstrate that we're not currently uniquing address table entries in fission

[David Blaikie]

Author: dblaikie
Date: Wed Feb 12 17:03:54 2014
New Revision: 201267

URL: http://llvm.org/viewvc/llvm-project?rev=201267&view=rev
Log:
DebugInfo: Demonstrate that we're not currently uniquing address table entries in fission

Since I just discovered this while poking at other things, here's the
test case so I have it to come back to later.

Modified:
    llvm/trunk/test/DebugInfo/X86/tls.ll

Modified: llvm/trunk/test/DebugInfo/X86/tls.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/DebugInfo/X86/tls.ll?rev=201267&r1=201266&r2=201267&view=diff
==============================================================================
--- llvm/trunk/test/DebugInfo/X86/tls.ll (original)
+++ llvm/trunk/test/DebugInfo/X86/tls.ll Wed Feb 12 17:03:54 2014
@@ -13,7 +13,7 @@
 ; FISSION: .section    .debug_info.dwo,
 ; 3 bytes of data in this DW_FORM_block1 representation of the location of 'tls'
 ; FISSION: .byte 3{{ *}}# DW_AT_location
-; DW_OP_const_index (0xfx == 252) to refer to the debug_addr table
+; DW_OP_GNU_const_index (0xfx == 252) to refer to the debug_addr table
 ; FISSION-NEXT: .byte 252
 ; an index of zero into the debug_addr table
 ; FISSION-NEXT: .byte 0
@@ -33,21 +33,72 @@
 ; DW_OP_GNU_push_tls_address
 ; CHECK-NEXT: .byte 224
 
+; FISSION: DW_TAG_variable
+; FISSION: .byte 2 # DW_AT_location
+; DW_OP_GNU_addr_index
+; FISSION-NEXT: .byte 251
+; FISSION-NEXT: .byte 1
+
+; FISSION: DW_TAG_template_value_parameter
+; FISSION: .byte 3 # DW_AT_location
+; DW_OP_GNU_addr_index
+; FISSION-NEXT: .byte 251
+; FIXME: This should be '1' to share the address table entry with the variable location above
+; FISSION-NEXT: .byte 2
+; DW_OP_stack_value
+; FISSION-NEXT: .byte 159
+
 ; check that the expected TLS address description is the first thing in the debug_addr section
 ; FISSION: .section    .debug_addr
 ; FISSION-NEXT: .quad  tls at DTPOFF
+; FISSION-NEXT: .quad  glbl
+; FIXME: Deduplicate the debug_addr list
+; FISSION-NEXT: .quad  glbl
+
+; Generated from:
+
+; __thread int tls;
+; int glbl;
+;
+; template <int *I>
+; int func() {
+;   return 0;
+; }
+;
+; template int func<&glbl>(); // create a second reference to 'glbl'
+
 
 @tls = thread_local global i32 0, align 4
+ at glbl = global i32 0, align 4
+
+; Function Attrs: nounwind uwtable
+define weak_odr i32 @_Z4funcIXadL_Z4glblEEEiv() #0 {
+entry:
+  ret i32 0, !dbg !18
+}
+
+attributes #0 = { 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" }
 
 !llvm.dbg.cu = !{!0}
-!llvm.module.flags = !{!7, !8}
+!llvm.module.flags = !{!15, !16}
+!llvm.ident = !{!17}
 
-!0 = metadata !{i32 786449, metadata !1, i32 4, metadata !"clang version 3.4 ", i1 false, metadata !"", i32 0, metadata !2, metadata !2, metadata !2, metadata !3, metadata !2, metadata !"tls.dwo"} ; [ DW_TAG_compile_unit ] [/tmp/tls.cpp] [DW_LANG_C_plus_plus]
-!1 = metadata !{metadata !"tls.cpp", metadata !"/tmp"}
+!0 = metadata !{i32 786449, metadata !1, i32 4, metadata !"clang version 3.5 ", i1 false, metadata !"", i32 0, metadata !2, metadata !2, metadata !3, metadata !12, metadata !2, metadata !"-.dwo"} ; [ DW_TAG_compile_unit ] [/tmp/dbginfo/tls.cpp] [DW_LANG_C_plus_plus]
+!1 = metadata !{metadata !"tls.cpp", metadata !"/tmp/dbginfo"}
 !2 = metadata !{}
 !3 = metadata !{metadata !4}
-!4 = metadata !{i32 786484, i32 0, null, metadata !"tls", metadata !"tls", metadata !"", metadata !5, i32 1, metadata !6, i32 0, i32 1, i32* @tls, null} ; [ DW_TAG_variable ] [tls] [line 1] [def]
-!5 = metadata !{i32 786473, metadata !1}          ; [ DW_TAG_file_type ] [/tmp/tls.cpp]
-!6 = metadata !{i32 786468, null, null, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed]
-!7 = metadata !{i32 2, metadata !"Dwarf Version", i32 3}
-!8 = metadata !{i32 1, metadata !"Debug Info Version", i32 1}
+!4 = metadata !{i32 786478, metadata !1, metadata !5, metadata !"func<&glbl>", metadata !"func<&glbl>", metadata !"_Z4funcIXadL_Z4glblEEEiv", i32 5, metadata !6, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, i32 ()* @_Z4funcIXadL_Z4glblEEEiv, metadata !9, null, metadata !2, i32 5} ; [ DW_TAG_subprogram ] [line 5] [def] [func<&glbl>]
+!5 = metadata !{i32 786473, metadata !1}          ; [ DW_TAG_file_type ] [/tmp/dbginfo/tls.cpp]
+!6 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !7, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!7 = metadata !{metadata !8}
+!8 = metadata !{i32 786468, null, null, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed]
+!9 = metadata !{metadata !10}
+!10 = metadata !{i32 786480, null, metadata !"I", metadata !11, i32* @glbl, null, i32 0, i32 0} ; [ DW_TAG_template_value_parameter ]
+!11 = metadata !{i32 786447, null, null, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 0, metadata !8} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from int]
+!12 = metadata !{metadata !13, metadata !14}
+!13 = metadata !{i32 786484, i32 0, null, metadata !"tls", metadata !"tls", metadata !"", metadata !5, i32 1, metadata !8, i32 0, i32 1, i32* @tls, null} ; [ DW_TAG_variable ] [tls] [line 1] [def]
+!14 = metadata !{i32 786484, i32 0, null, metadata !"glbl", metadata !"glbl", metadata !"", metadata !5, i32 2, metadata !8, i32 0, i32 1, i32* @glbl, null} ; [ DW_TAG_variable ] [glbl] [line 2] [def]
+!15 = metadata !{i32 2, metadata !"Dwarf Version", i32 4}
+!16 = metadata !{i32 1, metadata !"Debug Info Version", i32 1}
+!17 = metadata !{metadata !"clang version 3.5 "}
+!18 = metadata !{i32 6, i32 0, metadata !4, null}