non-pointer arguments to kernels broken

[Kalle Raiskila]

Passing non-pointer arguments to kernels cause an error in the LLVM optimization passes.

(I've added a 'float c' parameter to the trig example - diff attached for your convenience)
pocl/examples/trig$ ./trig
Wrong type for attribute noalias
void (<4 x float>*, <4 x float>*, float, { i32, [3 x i32], [3 x i32], [3 x i32] }*)* @_trig
Broken module found, compilation aborted!
0 opt 0x08598008
Stack dump:
0. Program arguments: /opt/llvm/3.0rc4/bin//opt -load=/home/kraiskil/pocl/lib/llvmopencl/.libs/llvmopencl.so -generate-header -loop-simplify -loop-barriers -barriertails -barriers -flatten -always-inline -workitem -workgroup -kernel=trig -local-size=2 1 1 -header=.clekKUr4vb/kernel_header.h -o .clekKUr4vb/parallel.bc .clekKUr4vb/kernel_linked.bc
1. Running pass 'Function Pass Manager' on module '.clekKUr4vb/kernel_linked.bc'.
2. Running pass 'Module Verifier' on function '@_trig'
Aborted

This seems to come from the 'trig' kernel function being compiled to LLVM IR
define void @_trig(<4 x float>* noalias, <4 x float>* noalias, float noalias, ...
 by the looks of it, in the "Workgroup creation pass".

I.e. also non-pointers get a 'noalias' attribute, which doesn't make sense (and LLVM doesn't drop it silently)