search for: pointerbitmask

Displaying 3 results from an estimated 3 matches for "pointerbitmask".

[LLVMdev] question on code in PointerIntPair.h
2009 Oct 08
2
[LLVMdev] question on code in PointerIntPair.h
around line 45 a bitmask is computed as: PointerBitMask = ~(uintptr_t)(((intptr_t)1 << PtrTraits::NumLowBitsAvailable)-1), my question is why is the shift performed on intptr_t? Wouldn't the following be ok? PointerBitMask = ~(((uintptr_t)1 << PtrTraits::NumLowBitsAvailable)-1), Thanks in advance, Mau...
[LLVMdev] question on code in PointerIntPair.h
2009 Oct 09
0
[LLVMdev] question on code in PointerIntPair.h
On Oct 8, 2009, at 10:50 AM, Maurizio Vitale wrote: > around line 45 a bitmask is computed as: > > PointerBitMask = > ~(uintptr_t)(((intptr_t)1 << PtrTraits::NumLowBitsAvailable)-1), > > my question is why is the shift performed on intptr_t? Wouldn't the > following be ok? > > PointerBitMask = > ~(((uintptr_t)1 << PtrTraits::NumLowBitsAvailable)-1), Hi Maurizi...
[LLVMdev] question on code in PointerIntPair.h
2009 Oct 09
1
[LLVMdev] question on code in PointerIntPair.h
>>>>> "Chris" == Chris Lattner <clattner at apple.com> writes: Chris> On Oct 8, 2009, at 10:50 AM, Maurizio Vitale wrote: > around line 45 a bitmask is computed as: >> >> PointerBitMask = ~(uintptr_t)(((intptr_t)1 << >> PtrTraits::NumLowBitsAvailable)-1), >> >> my question is why is the shift performed on intptr_t? Wouldn't >> the following be ok? >> >> PointerBitMask = ~(((uintptr_t)1 << >> Pt...