Displaying 3 results from an estimated 3 matches for "setsimplehint".
2018 Apr 03
1
Mapping virtual registers to physical registers
Hi Krzysztof, Thanks for your response.
I was trying to map function input parameters to machine specific registers.
My solution I found is based to the RegInfo.setSimpleHint() API.
Here is the body of the parameters loop of TargetLowering::LowerFormalArguments
VReg = RegInfo.createVirtualRegister(RC);
RegInfo.setSimpleHint(VReg,CLP::FA_ROFF1+i);
RegInfo.addLiveIn(CLP::FA_ROFF1+i, VReg);
Load = DAG.getCopyFromReg(Chain, Loc, VReg,...
2018 Apr 02
0
Mapping virtual registers to physical registers
Hi Dominique,
From your description it is not really clear what you are trying to do
here. It may be the case that the goal you are trying to accomplish can
be better reached using a different approach.
In general, optimizations don't try to assign physical registers, that's
done by the register allocation passes. There are some cases when
target-specific passes use physical
2018 Mar 29
4
Mapping virtual registers to physical registers
Hi,
In the context of MachineCode custom inserter, I'm trying to enforce the mapping of virtual register to a physical one.
According to the documentation https://llvm.org/docs/CodeGenerator.html#mapping-virtual-registers-to-physical-registers
There are two ways: the direct one and the indirect ones. The indirect ones refer VirtRegMap class that I've never found. So I tried the direct