Displaying 2 results from an estimated 2 matches for "acc64".
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2013 Oct 03
0
[LLVMdev] Question about PseudoInstExpansion
I am trying to do the following pseudo-to-real instruction conversion:
PseudoMFHI GPR32:$rd, ACC64:$ac -> MFHI GPR32:$rd
Is there a way to tell the assembler, disassembler and instprinter to
ignore the ACC64:$ac operand? I know I can use PseudoInstExpansion to
accomplish this, but I just thought it would be convenient to have a flag
for this, something like flag "DisableEncoding"....
2015 Jan 03
2
[LLVMdev] "ran out of registers during register allocation"
It seems like it might be a legitimate complaint from the register
allocator.
It's trying to get an accumulator (not a general purpose register) and
the accumulator is 64 bit.
It's using a part of the Mips backend that I have not worked in so I
have to research this a bit.
The multiply instruction is a pseudo multiply in the mips backend and it
needs the accumulator which a special