[LLVMdev] LLVM ARM VMLA instruction

[suyog sarda]

Hi,

I was going through Code of LLVM instruction code generation for ARM. I
came across VMLA instruction hazards (Floating point multiply and
accumulate). I was comparing assembly code emitted by LLVM and GCC, where i
saw that GCC was happily using VMLA instruction for floating point while
LLVM never used it, instead it used a pair of VMUL and VADD instruction.

I wanted to know if there is any way in which these VMLA hazards can be
ignored and make LLVM to emit VMLA instructions? Is there any command line
option/compiler switch/FLAG for doing this? I tried '-ffast-math' but it
didn't work.


-- 
With regards,
Suyog Sarda
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