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2008 Jul 22
2
[LLVMdev] BITS_BIG_ENDIAN in llvm-gcc
...e.
// If this is little-endian bit-field, take the bottom NumBitsToInsert
// bits from the bitfield value.
But as I understand it in GCC, BITS_BIG_ENDIAN has nothing to do with
the way bit-fields are laid out. All it affects is how the operands of
the sign_extract and zero_extract RTXs are interpreted. This is what
the GCC internals manual says, and I believe it's true from looking at
the GCC source code.
So can anyone explain why llvm-gcc depends on BITS_BIG_ENDIAN in this way?
Thanks,
Jay.