(DRAFT) 1.26 support

[dgryski]

No description provided.

[dgryski]

New interp error building hello, world.

~/go/src/github.com/dgryski/hw $ tinygo run main.go
# syscall
/Users/dgryski/go/src/go.googlesource.com/go/src/syscall/syscall_darwin.go:414:27: interp: ptrtoint integer size does not equal pointer size
  %9 = call { i64, i64, i64 } @syscall.rawsyscalln(i64 %fn, ptr %6, i64 %7, i64 %8, ptr undef), !dbg !1069

traceback:
/Users/dgryski/go/src/go.googlesource.com/go/src/syscall/syscall_darwin.go:414:27:
  %9 = call { i64, i64, i64 } @syscall.rawsyscalln(i64 %fn, ptr %6, i64 %7, i64 %8, ptr undef), !dbg !1069
/Users/dgryski/go/src/go.googlesource.com/go/src/syscall/zsyscall_darwin_amd64.go:853:24:
  %1 = call { i64, i64, i64 } @syscall.rawSyscall(i64 ptrtoint (ptr @getrlimit to i64), i64 %which, i64 %0, i64 0, ptr undef), !dbg !1064
/Users/dgryski/go/src/go.googlesource.com/go/src/syscall/rlimit.go:32:21:
  %0 = call %runtime._interface @syscall.Getrlimit(i64 8, ptr %lim, ptr undef), !dbg !1060
/Users/dgryski/go/src/github.com/tinygo-org/tinygo/src/syscall:
  call void @"syscall.init#1"(ptr undef), !dbg !1056

[b0ch3nski]

Shouldn't minorMin also match the go.mod version?

[deadprogram]

@dgryski can we test this branch using #5137 ?

[dgryski]

@deadprogram We can, but the llvm/syscall issue is going to need work. (Changing CI base won't fix this)

[dgryski]

Started looking at this again. Seems like the llvm issue is maybe related to https://github.com/tinygo-org/tinygo/blob/release/compiler/syscall.go#L378 .

[dgryski]

Hmm.. maybe we just need to implement rawsyscalln ?

[dgryski]

Ok, have a patch to the syscall package that allows code to build and run on mac, but only if interp is disabled. Getting closer...

~/go/src/github.com/dgryski/hw $ tinygo run  -interp-timeout=0 main.go
hello, world
~/go/src/github.com/dgryski/hw $ tinygo version
tinygo version 0.40.1 darwin/amd64 (using go version go1.26.1 and LLVM version 20.1.8)

[dgryski]

The LLVM IR verify's fine. So it's going to be something with how interp is handling that code. (The patch here is going to be version specific, which is kind of annoying. The shift to rawsyscalln means that all the other syscall* functions are now multiply defined if we include our versions in runtime (since upstream Go has new definitions in syscall..)

[dgryski]

There's something about the arguments to this Getrlimit call that interp doesn't like. https://go.dev/src/syscall/rlimit.go#L32

[dgryski]

@niaow Any help with the interp issues would be appreciated.