[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<[],
[llvm_v4f32_ty]>;
and the C sample code is
main {
float4 a,b,c,d;
d=__builtin_nema_lkp3(a,b,c); /// if have hit jump after
__builtin_nema_updt
d= a*b+c;
__builtin_nema_updt(d);
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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