https://bugs.llvm.org/show_bug.cgi?id=52376
Bug ID: 52376
Summary: wasm64: unimplemented R_WASM_GLOBAL_INDEX_I64 using
-generate-arange-section
Product: libraries
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: enhancement
Priority: P
Component: Backend: WebAssembly
Assignee: unassignedb...@nondot.org
Reporter: a...@crichton.co
CC: aardap...@gmail.com, llvm-bugs@lists.llvm.org
Created attachment 25413
--> https://bugs.llvm.org/attachment.cgi?id=25413&action=edit
reduced bytecode
In compiling some Rust code this is a crash that I've been seeing when enabling
debug information. It looks like the Rust compiler by default will pass the
`-generate-aragne-section` argument to LLVM which causes this crash, and
avoiding passing that flag will work. I've attached the bugpoint-reduced
bitcode here to this issue and can reproduce the crash with:
$ llc -filetype=obj -o foo.o -generate-arange-section
./bugpoint-reduced-simplified.bc
unimplemented R_WASM_GLOBAL_INDEX_I64
UNREACHABLE executed at
/home/acrichto/code/rust/src/llvm-project/llvm/lib/Target/WebAssembly/MCTargetDesc/WebAssemblyWasmObjectWriter.cpp:146!
PLEASE submit a bug report to https://bugs.llvm.org/ and include the crash
backtrace.
Stack dump:
...
I'll be updating the Rust compiler to avoid passing -generate-arange-section
now on the wasm64 target (temporarily), but figured it'd be good to open a bug
still!
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