Could not compile `codspeed` with `cranelift`

[chirizxc]

OS: Windows 10
rustc version: nightly-x86_64-pc-windows-msvc | rustc 1.92.0-nightly (9725c4baa 2025-10-09)

cargo.toml:

[package]
name = "untitled"
version = "0.1.0"
edition = "2024"

[dependencies]
codspeed = "4.0.4"

C:\Users\chiri\.cargo\config.toml

[unstable]
codegen-backend = true
profile-rustflags = true

[build]
incremental = true
rustc-wrapper = "C:/Users/chiri/scoop/shims/sccache"

[profile.dev]
opt-level = 1
strip = "debuginfo"
codegen-backend = "cranelift"

[profile.dev.package."*"]
opt-level = 3

❯ rustup override set nightly                                                                                                                         
info: override toolchain for 'C:\Users\chiri\Desktop\untitled' set to 'nightly-x86_64-pc-windows-msvc'        

❯ cargo build
   Compiling codspeed v4.0.4                                                                                                                          
error: unknown token in expression                                                                                                                   
   |
note: instantiated into assembly here
  --> <inline asm>:12:10
   |
12 | rol rdi, $$3
   |          ^

error: unknown token in expression
   |
note: instantiated into assembly here
  --> <inline asm>:13:10
   |
13 | rol rdi, $$13
   |          ^

error: unknown token in expression
   |
note: instantiated into assembly here
  --> <inline asm>:14:10
   |
14 | rol rdi, $$61
   |          ^

error: unknown token in expression
   |
note: instantiated into assembly here
  --> <inline asm>:15:10
   |
15 | rol rdi, $$51
   |          ^

error: unknown token in expression
   |
note: instantiated into assembly here
  --> <inline asm>:33:10
   |
33 | rol rdi, $$3
   |          ^

error: unknown token in expression
   |
note: instantiated into assembly here
  --> <inline asm>:34:10
   |
34 | rol rdi, $$13
   |          ^

error: unknown token in expression
   |
note: instantiated into assembly here
  --> <inline asm>:35:10
   |
35 | rol rdi, $$61
   |          ^

error: unknown token in expression
   |
note: instantiated into assembly here
  --> <inline asm>:36:10
   |
36 | rol rdi, $$51
   |          ^

error: aborting due to 8 previous errors

error: Failed to assemble `.globl __inline_asm_codspeed__737a3f072d152e79_cgu__07_n0
       __inline_asm_codspeed__737a3f072d152e79_cgu__07_n0:
       .intel_syntax noprefix
           push rbp
           mov rbp,rsp
           push rbx
           mov rbx,rdi
           mov rax, [rbx+0x8]
           mov rdx, [rbx+0x0]
       rol rdi, $$3
       rol rdi, $$13
       rol rdi, $$61
       rol rdi, $$51
       xchg rbx, rbx
           mov [rbx+0x0], rdx
           pop rbx
           pop rbp
           ret
       .att_syntax
       
       
       .globl __inline_asm_codspeed__737a3f072d152e79_cgu__07_n1
       __inline_asm_codspeed__737a3f072d152e79_cgu__07_n1:
       .intel_syntax noprefix
           push rbp
           mov rbp,rsp
           push rbx
           mov rbx,rdi
           mov rax, [rbx+0x8]
           mov rdx, [rbx+0x0]
       rol rdi, $$3
       rol rdi, $$13
       rol rdi, $$61
       rol rdi, $$51
       xchg rbx, rbx
           mov [rbx+0x0], rdx
           pop rbx
           pop rbp
           ret
       .att_syntax
       
       
       `

error: could not compile `codspeed` (lib) due to 1 previous error

[bjorn3]

There seems to be a weird thing where LLVM accept $ (which should only be used with AT&T syntax, not the default intel syntax), but only in asm!() and not global_asm!(). Given that cg_clif implements inline asm by generating global_asm!() to pass to cg_llvm, compilation fails. codspeed should be changed to remove the extraneous $. I guess they were copy pasted from somewhere that used the now removed llvm_asm!(), which did default to AT&T syntax and required escaping $ with another $.

[chirizxc]

https://github.com/CodSpeedHQ/codspeed-rust/blob/d71bcc0ad404a3db27115c8f86db6311437b5964/crates/codspeed/src/request/arch/x86_64.rs#L9