Displaying 1 result from an estimated 1 matches for "mytargetlowering".
2015 Dec 30
2
Substitute instruction with a jump to a library code
I'm trying to find a way to emulate a floating point instruction, say a
floating point add. My understanding is that in order to do that I need to
execute
setOperationAction(ISD::FADD, (MVT::f32, Expand);
setOperationAction(ISD::FADD, (MVT::f64, Expand);
in MyTargetISelLowering.cpp, MyTargetLowering::MyTargetLowering(...).
However for some reason I'm still seeing a floating point add in the final
assembly. I tried running my test code (provided below) on MSP430 and can
see it execute a jump instruction to a label that is clearly located in the
library code.
Here is my test code:
; Modul...