rust/compiler/rustc_codegen_ssa/src/traits/debuginfo.rs, branch try-perf

codegen: Generate `dbg_value` for the ref statement

2025-10-02T06:55:51+00:00

Revert "Preserve the .debug_gdb_scripts section"

2025-08-06T18:01:07+00:00

This reverts commit 868bdde25b030e0b71a29a5dbc04a891036e702e.

Preserve the .debug_gdb_scripts section

2025-08-05T08:55:07+00:00

Make sure that compiler and linker don't optimize the section's contents away by adding the global holding the data to "llvm.used". The volatile load in the main shim is retained because "llvm.used", which translates to SHF_GNU_RETAIN on ELF targets, requires a reasonably recent linker; emitting the volatile load ensures compatibility with older linkers, at least when libstd is used. Pretty printers in dylib dependencies are now emitted by the main crate instead of the dylib; apart from matching how rlibs are handled, this approach has the advantage that `omit_gdb_pretty_printer_section` keeps working with dylib dependencies.

Remove get_dbg_loc from DebugInfoBuilderMethods

2025-06-03T10:00:11+00:00

It is only used within cg_llvm.

Use ExistentialTraitRef throughout codegen

2025-01-30T15:34:00+00:00

CFI: Append debug location to CFI blocks

2024-11-11T09:17:43+00:00

compiler: Directly use rustc_abi in codegen

2024-11-03T20:30:32+00:00

Reformat using the new identifier sorting from rustfmt

2024-09-22T23:11:29+00:00

Rename supertraits of `CodegenMethods`.

2024-09-17T00:24:43+00:00

Supertraits of `BuilderMethods` are all called `XyzBuilderMethods`. Supertraits of `CodegenMethods` are all called `XyzMethods`. This commit changes the latter to `XyzCodegenMethods`, for consistency.

Don't leave debug locations for constants sitting on the builder indefinitely.

2024-09-06T23:12:18+00:00

Because constants are currently emitted *before* the prologue, leaving the debug location on the IRBuilder spills onto other instructions in the prologue and messes up both line numbers as well as the point LLVM chooses to be the prologue end. Example LLVM IR (irrelevant IR elided): Before: define internal { i64, i64 } @_ZN3tmp3Foo18var_return_opt_try17he02116165b0fc08cE(ptr align 8 %self) !dbg !347 { start: %self.dbg.spill = alloca [8 x i8], align 8 %_0 = alloca [16 x i8], align 8 %residual.dbg.spill = alloca [0 x i8], align 1 #dbg_declare(ptr %residual.dbg.spill, !353, !DIExpression(), !357) store ptr %self, ptr %self.dbg.spill, align 8, !dbg !357 #dbg_declare(ptr %self.dbg.spill, !350, !DIExpression(), !358) After: define internal { i64, i64 } @_ZN3tmp3Foo18var_return_opt_try17h00b17d08874ddd90E(ptr align 8 %self) !dbg !347 { start: %self.dbg.spill = alloca [8 x i8], align 8 %_0 = alloca [16 x i8], align 8 %residual.dbg.spill = alloca [0 x i8], align 1 #dbg_declare(ptr %residual.dbg.spill, !353, !DIExpression(), !357) store ptr %self, ptr %self.dbg.spill, align 8 #dbg_declare(ptr %self.dbg.spill, !350, !DIExpression(), !358) Note in particular how !357 from %residual.dbg.spill's dbg_declare no longer falls through onto the store to %self.dbg.spill. This fixes argument values at entry when the constant is a ZST (e.g.