610ac3bd42
When a symbol is GC'd it can still be references by relocations in the debug sections, but such symbols are not assigned virtual addresses. This change adds a new global data symbol which gets GC'd but should still appears in the output debug info, albeit with a 0 address. Fixes 37555 Differential Revision: https://reviews.llvm.org/D47238 llvm-svn: 333047
86 lines
3.2 KiB
Plaintext
86 lines
3.2 KiB
Plaintext
RUN: llc -filetype=obj %p/Inputs/debuginfo1.ll -o %t.debuginfo1.o
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RUN: llc -filetype=obj %p/Inputs/debuginfo2.ll -o %t.debuginfo2.o
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RUN: wasm-ld -o %t.wasm %t.debuginfo1.o %t.debuginfo2.o
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RUN: llvm-dwarfdump %t.wasm | FileCheck %s
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CHECK: file format WASM
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CHECK: .debug_info contents:
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CHECK: DW_TAG_compile_unit
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CHECK-NEXT: DW_AT_producer ("clang version 7.0.0 (trunk {{.*}})")
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CHECK-NEXT: DW_AT_language (DW_LANG_C99)
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CHECK-NEXT: DW_AT_name ("hi.c")
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CHECK: DW_TAG_subprogram
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CHECK-NEXT: DW_AT_low_pc
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CHECK-NEXT: DW_AT_high_pc
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CHECK-NEXT: DW_AT_name ("test")
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CHECK-NEXT: DW_AT_decl_file ("/Users/yury/llvmwasm{{(/|\\)}}hi.c")
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CHECK-NEXT: DW_AT_decl_line (3)
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CHECK-NEXT: DW_AT_prototyped (true)
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CHECK: DW_TAG_formal_parameter
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CHECK-NEXT: DW_AT_name ("t")
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CHECK-NEXT: DW_AT_decl_file ("/Users/yury/llvmwasm{{(/|\\)}}hi.c")
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CHECK-NEXT: DW_AT_decl_line (3)
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CHECK: DW_TAG_subprogram
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CHECK-NEXT: DW_AT_low_pc
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CHECK-NEXT: DW_AT_high_pc
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CHECK-NEXT: DW_AT_name ("_start")
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CHECK-NEXT: DW_AT_decl_file ("/Users/yury/llvmwasm{{(/|\\)}}hi.c")
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CHECK-NEXT: DW_AT_decl_line (7)
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CHECK: DW_TAG_base_type
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CHECK-NEXT: DW_AT_name ("int")
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CHECK-NEXT: DW_AT_encoding (DW_ATE_signed)
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CHECK-NEXT: DW_AT_byte_size (0x04)
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CHECK: DW_TAG_compile_unit
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CHECK-NEXT: DW_AT_producer ("clang version 7.0.0 (trunk {{.*}})")
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CHECK-NEXT: DW_AT_language (DW_LANG_C99)
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CHECK-NEXT: DW_AT_name ("hi_foo.c")
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CHECK: DW_TAG_variable
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CHECK-NEXT: DW_AT_name ("y")
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CHECK-NEXT: DW_AT_type (0x00000097 "int[]")
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CHECK-NEXT: DW_AT_external (true)
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CHECK-NEXT: DW_AT_decl_file ("{{.*}}hi_foo.c")
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CHECK-NEXT: DW_AT_decl_line (1)
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CHECK: DW_AT_location (DW_OP_addr 0x400)
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CHECK: DW_TAG_array_type
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CHECK: DW_TAG_subrange_type
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CHECK: DW_TAG_base_type
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CHECK-NEXT: DW_AT_name ("int")
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CHECK-NEXT: DW_AT_encoding (DW_ATE_signed)
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CHECK-NEXT: DW_AT_byte_size (0x04)
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CHECK: DW_TAG_base_type
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CHECK-NEXT: DW_AT_name ("__ARRAY_SIZE_TYPE__")
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CHECK-NEXT: DW_AT_byte_size (0x08)
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CHECK-NEXT: DW_AT_encoding (DW_ATE_unsigned)
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CHECK: DW_TAG_variable
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CHECK-NEXT: DW_AT_name ("z")
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CHECK-NEXT: DW_AT_type (0x00000097 "int[]")
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CHECK-NEXT: DW_AT_external (true)
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CHECK-NEXT: DW_AT_decl_file ("{{.*}}hi_foo.c")
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CHECK-NEXT: DW_AT_decl_line (8)
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CHECK-NEXT: DW_AT_location (DW_OP_addr 0x0)
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CHECK: DW_TAG_subprogram
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CHECK-NEXT: DW_AT_low_pc
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CHECK-NEXT: DW_AT_high_pc
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CHECK-NEXT: DW_AT_name ("foo")
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CHECK-NEXT: DW_AT_decl_file ("{{.*}}hi_foo.c")
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CHECK-NEXT: DW_AT_decl_line (3)
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CHECK: DW_TAG_formal_parameter
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CHECK-NEXT: DW_AT_name ("p")
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CHECK-NEXT: DW_AT_decl_file ("{{.*}}hi_foo.c")
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CHECK-NEXT: DW_AT_decl_line (3)
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