[LLVMdev] processor Intrisic handling question

Stavropoulos Nikos n.stavropoulos at think-silicon.com
Fri Oct 24 03:11:10 PDT 2014

hi all, 
i have 2 intrinsics that  i want to insert them into my C code.

def int_nema_lkp3:
GCCBuiltin<"__builtin_nema_lkp3">,Intrinsic<[llvm_v4f32_ty], [llvm_v4f32_ty,
llvm_v4f32_ty, llvm_v4f32_ty]>;

def int_nema_updt: GCCBuiltin<"__builtin_nema_updt">,Intrinsic<[],

and the C sample code is 

main {

float4 a,b,c,d;

d=__builtin_nema_lkp3(a,b,c); /// if have  hit jump after

d= a*b+c;


return 0;

so i want the first intrinsic instruction to conditionally branch after the
second intrinsic instruction.

i have tried to do the same with with if - else code but this needs an extra
variable that i don't want to exist.

Should i do something like iterating the nodes to find where to jump??

Thanks in advance

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