[llvm] [llvm-nm] Introduce synthetic flag (PR #138232)

[Vladislav Khmelevsky via llvm-commits]

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@@ -0,0 +1,90 @@
+## Test --synthetic flag.
+
+# RUN: yaml2obj %s -o %t
+
+# RUN: llvm-nm %t | count 0
+# RUN: llvm-nm %t --synthetic | FileCheck %s
+
+--- !ELF
+FileHeader:
+  Class:           ELFCLASS64
+  Data:            ELFDATA2LSB
+  Type:            ET_DYN
+  Machine:         EM_AARCH64
+Sections:
+  - Name:            .rela.plt
+    Type:            SHT_RELA
+    Flags:           [ SHF_ALLOC, SHF_INFO_LINK ]
+    Address:         0x540
+    Link:            .dynsym
+    AddressAlign:    0x8
+    Info:            .got
+    Relocations:
+      - Offset:          0x10FA8
+        Symbol:          __libc_start_main
+        Type:            R_AARCH64_JUMP_SLOT
+      - Offset:          0x10FB0
+        Symbol:          __cxa_finalize
+        Type:            R_AARCH64_JUMP_SLOT
+      - Offset:          0x10FB8
+        Symbol:          __gmon_start__
+        Type:            R_AARCH64_JUMP_SLOT
+      - Offset:          0x10FC0
+        Symbol:          abort
+        Type:            R_AARCH64_JUMP_SLOT
+      - Offset:          0x10FC8
+        Symbol:          puts
+        Type:            R_AARCH64_JUMP_SLOT
+  - Name:            .plt
+    Type:            SHT_PROGBITS
+    Flags:           [ SHF_ALLOC, SHF_EXECINSTR ]
+    Address:         0x5D0
+    AddressAlign:    0x10
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+  - Name:            .text
+    Type:            SHT_PROGBITS
+    Flags:           [ SHF_ALLOC, SHF_EXECINSTR ]
+    Address:         0x640
+  - Name:            .dynamic
+    Type:            SHT_DYNAMIC
+    Flags:           [ SHF_WRITE, SHF_ALLOC ]
+    Address:         0x10DA0
+    Link:            .dynstr
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+    Entries:
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+      - Tag:             DT_NULL
+        Value:           0x0
+  - Name:            .got
+    Type:            SHT_PROGBITS
+    Flags:           [ SHF_WRITE, SHF_ALLOC ]
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+DynamicSymbols:
+  - Name:            __libc_start_main
+    Type:            STT_FUNC
+    Binding:         STB_GLOBAL
+  - Name:            __cxa_finalize
+    Type:            STT_FUNC
+    Binding:         STB_WEAK
+  - Name:            __gmon_start__
+    Binding:         STB_WEAK
+  - Name:            abort
+    Type:            STT_FUNC
+    Binding:         STB_GLOBAL
+  - Name:            puts
+    Type:            STT_FUNC
+    Binding:         STB_GLOBAL
+
+# CHECK:      0000000000000600 T __cxa_finalize at plt
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yota9 wrote:

I agree, if it is a major thing I would do it, just didn't want to waste time on this since 5 seems to be not a big issue :)

https://github.com/llvm/llvm-project/pull/138232