By the way, this existed at one point. Early versions of the Go
toolchain included C compilers (6c, 8c, etc.) designed to work together
nicely with Go code. If I remember right, most of the Go runtime was
written in C, and compiled with these compilers. But they used an
unusual dialect of C (which came from Plan 9) instead of ANSI C, so they
couldn't compile most C libraries.
When the Go runtime was translated from C to Go, these compilers were
dropped.
If you wanted to revive them and make them ANSI compliant, you would
need to write a new libc that calls into the Go standard library for its
system calls—because C code compiled with this compiler would not be
able to call into the system libc without CGo!
Andy
On 3/13/21 10:57 PM, Jason E. Aten wrote:
I was noodling about how to minimize the cost of crossing the CGO
barrier from Go code into C code and back.
Then I thought, what if I look at this the other way around.
Instead of teaching the Go compiler how to better run C code, what if
a C compiler (e.g. clang) was taught to generate code that used the Go
stack and calling conventions.
Theoretically, the cc output "in Go convention" could be linked with
Go code without paying the CGO penalty, no?
How crazy is this? :)
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