[LLVMdev] X86 instruction encoding

Bin Zeng ezengbin at gmail.com
Sat Mar 19 08:06:52 PDT 2011


Hi all,

Just a quick question about the X86 instruction naming convention in 
LLVM. Most instruction names in LLVM are self-explanatory. Some are a 
little confusing. What is the difference between instruction MULSSrr and 
MULSSrr_Int? What does the suffix '_Int' stand for? Are these 
instructions exchangeable: "ST_F64m", "ST_FP64m", "ST_Fp64m" 
"ST_FpP64m32"? Any direction will be appreciated. Thanks a lot in advance.

Bin



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