[llvm-dev] Tail calls and portability
Simon Dardis via llvm-dev
llvm-dev at lists.llvm.org
Thu Jan 5 06:01:24 PST 2017
There is some support for tail calls for MIPS, but it is not enabled by default yet.
From: llvm-dev [mailto:llvm-dev-bounces at lists.llvm.org] On Behalf Of Demi Obenour via llvm-dev
Sent: 05 January 2017 03:08
To: llvm-dev at lists.llvm.org
Subject: [llvm-dev] Tail calls and portability
I have been working on adding proper tail (via `become`) to rustc. I was able to make them work (some parts of the type checker aren't implemented yet). However, I ran into an LLVM-related problem.
LLVM claims to support proper tail calls when fastcc is used — but only on i386, x86-64 and PowerPC. Is this accurate? Will proper tail calls be supported on WebAssembly? Are they supported on ARM? AArch64? Other backends?
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