[llvm] r257400 - [LibCallSimplifier] use instruction-level fast-math-flags to transform sqrt calls

[Joerg Sonnenberger via llvm-commits]

On Mon, Jan 11, 2016 at 10:34:20PM -0000, Sanjay Patel via llvm-commits wrote:
> Author: spatel
> Date: Mon Jan 11 16:34:19 2016
> New Revision: 257400
> 
> URL: http://llvm.org/viewvc/llvm-project?rev=257400&view=rev
> Log:
> [LibCallSimplifier] use instruction-level fast-math-flags to transform sqrt calls

This crashes witht -O2 on typical configure tests like:

  char sqrt ();
  int main () { return sqrt (); ; return 0; }

A definite show stopper for 3.8...

Joerg