Crash with llc and vector code

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Message: 11
Date: Fri, 22 Oct 2010 16:23:36 +0200
From: Duncan Sands <baldrick@free.fr>
Subject: Re: [LLVMdev] Crash with llc and vector code
To: llvmdev@cs.uiuc.edu
Message-ID: <4CC19E68.3000004@free.fr>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

Compiling the simple following function with llv (LLVM 2.8) :

define<4 x i32> @foo(<4 x i32> %a,<4 x i32> %b) {
  %res = select<4 x i1> <i1 true, i1 false, i1 true, i1 true>,<4 x i32> %a,<4 x i32> %b ;
  ret<4 x i32> %res
}

gives :

UNREACHABLE executed!

...

Is it a known problem?

Yes, vectors of boolean are not supported by the code generators.
See 1784 – vectors of i1 and vectors x86 long double don't work

Ciao,

Duncan.

An idea when it will be fixed?

Thanks

Stéphane Letz

2

An idea when it will be fixed?

No, sorry. I don't have time to work on this (and won't for the next
few months at least) for example.

Ciao,

Duncan.