These binary operations include sub/fadd/fsub/fmul/fdiv. Others ops
like mul/udiv/sdiv/urem/srem would be added later since they depend on
`shift` and `truncate` that have not been supported.
Note `add` has been added in a previous patch.
Reference:
https://llvm.org/docs/LangRef.html#binary-operations
Differential Revision: https://reviews.llvm.org/D127199
This patch constructs codegen infra and successfully generate the first
'add' instruction. Add integer calling convention for fixed arguments which
are passed with general-purpose registers.
New test added here:
CodeGen/LoongArch/ir-instruction/add.ll
The test file is placed in a subdirectory because we will use
subdirctories to distinguish different categories of tests (e.g.
intrinsic, inline-asm ...)
Reviewed By: MaskRay, SixWeining
Differential Revision: https://reviews.llvm.org/D122366
WANG Xuerui