ff171acf84
This change has 2 components: Target-independent: add a method getDwarfFrameBase to TargetFrameLowering. It describes how the Dwarf frame base will be encoded. That can be a register (the default), the CFA (which replaces NVPTX-specific logic in DwarfCompileUnit), or a DW_OP_WASM_location descriptr. WebAssembly: Allow WebAssemblyFunctionInfo::getFrameRegister to return the correct virtual register instead of FP32/SP32 after WebAssemblyReplacePhysRegs has run. Make WebAssemblyExplicitLocals store the local it allocates for the frame register. Use this local information to implement getDwarfFrameBase The result is that the DW_AT_frame_base attribute is correctly encoded for each subprogram, and each param and local variable has a correct DW_AT_location that uses DW_OP_fbreg to refer to the frame base. This is a reland of rG3a05c3969c18 with fixes for the expensive-checks and Windows builds Differential Revision: https://reviews.llvm.org/D71681
89 lines
3.4 KiB
Plaintext
89 lines
3.4 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_frame_base
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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_frame_base
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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 (0x000000a1 "int[2]")
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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 (0x000000a1 "int[2]")
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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_frame_base
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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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