Gert Wollny authored Apr 09, 2020 and Erik Faye-Lund committed Oct 26, 2020

PHI nodes need special treatment, because the incoming values are bound
to blocks so that we can't bitcast on the fly and need to bitcast
while storing instead. So scan the shader for PHI nodes and add some
type info to the variable storage beforehand, so that we can emit a
bitcast while storing if needed. Use integers as type because it
supports more bit sizes then float, and for 64 bit support for double
already implies support for int64.

v2: Allocate PHI sources with the expected bit size and as INT

Signed-off-by: Gert Wollny <gert.wollny@collabora.com>