[llvm] [DebugInfo] Add clang flag to enable function-level debug line attribution (PR #93985)

[via llvm-commits]

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@@ -0,0 +1,68 @@
+; RUN: llc -mtriple=i686-w64-mingw32 -o %t -filetype=obj %s
+; RUN: llvm-dwarfdump -v -all %t | FileCheck %s -check-prefix=NO_STMT_SEQ
+
+; RUN: llc -mtriple=i686-w64-mingw32 -o %t -filetype=obj %s -emit-func-debug-line-table-offsets
+; RUN: llvm-dwarfdump -v -all %t | FileCheck %s -check-prefix=STMT_SEQ
+
+; NO_STMT_SEQ-NOT:      DW_AT_META_stmt_sequence
+
+; STMT_SEQ:   [2] DW_TAG_subprogram
+; STMT_SEQ:  	       DW_AT_META_stmt_sequence    DW_FORM_sec_offset
+; STMT_SEQ:   DW_TAG_subprogram [2]
+; STMT_SEQ:       DW_AT_META_stmt_sequence [DW_FORM_sec_offset]	(0x00000028)
+; STMT_SEQ:   DW_AT_name {{.*}}func01
+; STMT_SEQ:   DW_TAG_subprogram [2]
+; STMT_SEQ:       DW_AT_META_stmt_sequence [DW_FORM_sec_offset]	(0x00000038)
+; STMT_SEQ:   DW_AT_name {{.*}}main
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alx32 wrote:

Seems we can rely on the offsets being stable and match them as absolute values: https://github.com/llvm/llvm-project/blob/main/llvm/test/tools/llvm-dwarfdump/X86/verbose.test#L15-L30

https://github.com/llvm/llvm-project/pull/93985