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27 Commits

Author SHA1 Message Date
Argyrios Kyrtzidis
a3437f732e Allow getting the address of the value in a PointerUnion or PointerIntPair if one is 
confident enough that he knows what he is doing.

llvm-svn: 126019
 2011-02-19 03:55:58 +00:00
Chris Lattner
587962c667 Remove isPod() from DenseMapInfo, splitting it out to its own 
isPodLike type trait.  This is a generally useful type trait for
more than just DenseMap, and we really care about whether something
acts like a pod, not whether it really is a pod.

llvm-svn: 91421
 2009-12-15 07:26:43 +00:00
John McCall
f2c6ae3996 Fix a few places where PointerIntPair was using PointerLikeTypeTraits<PointerTy> 
instead of the PtrTraits provided.  Allows PointerIntPair to contain a
PointerUnion safely, as long as the bits add up.

llvm-svn: 82163
 2009-09-17 20:35:18 +00:00
Bill Wendling
07f3cdb8ba I cast, therefore I think I know what I'm doing. 
llvm-svn: 70151
 2009-04-26 20:12:38 +00:00
Bill Wendling
d0a7587da5 Use uint64_t instead of unsigned. 
llvm-svn: 70148
 2009-04-26 19:46:41 +00:00
Chris Lattner
4685a9682f revert an incorrect patch. This causes crashes all over the place on a 
64-bit build.

llvm-svn: 70147
 2009-04-26 19:44:20 +00:00
Bill Wendling
2233793a0f Suppress warnings about conversion shortening 64-bit to 32-bit. 
llvm-svn: 70138
 2009-04-26 18:10:20 +00:00
Chris Lattner
2d00a451cb fix the PointerLikeTypeTraits specialization for PointerIntPair to 
allow the traits to be specified as well.

llvm-svn: 68055
 2009-03-30 20:28:50 +00:00
Chris Lattner
8e83bd3891 add missing space. 
llvm-svn: 67995
 2009-03-29 13:26:05 +00:00
Chris Lattner
f3d562df05 When forming sentinels for empty/tombstone, make sure to respect the 
pointer's expected number of zero low-bits.

This should fix the breakage I introduced recently.

llvm-svn: 67990
 2009-03-29 06:33:22 +00:00
Chris Lattner
b71e26c380 Allow a specific PointerIntPair instance to use a specific Pointer trait: 
some pointer instances have properties that not all of a type have.

llvm-svn: 67986
 2009-03-29 06:02:20 +00:00
Chris Lattner
9dc97aa7bf Replace the PointerLikeTypeTraits::getNumLowBitsAvailable 
function with a new NumLowBitsAvailable enum, which makes the
value available as an integer constant expression.

Add PointerLikeTypeTraits specializations for Instruction* and
Use** since they are only guaranteed 4-byte aligned.

Enhance PointerIntPair to know about (and enforce) the alignment
specified by PointerLikeTypeTraits.  This should allow things 
like PointerIntPair<PointerIntPair<void*, 1,bool>, 1, bool> 
because the inner one knows that 2 low bits are free.

llvm-svn: 67979
 2009-03-29 04:32:37 +00:00
Chris Lattner
a78775615b rename PointerLikeTypeInto to PointerLikeTypeTraits, add trait for 
# low bits free, and move to its own header.

llvm-svn: 67973
 2009-03-29 00:39:30 +00:00
Chris Lattner
c512533ea0 teach SmallPtrSet that PointerIntPair is "basically a pointer". 
llvm-svn: 67970
 2009-03-29 00:18:42 +00:00
Duncan Sands
ecfbe4521c Get this building with gcc-4.4. 
llvm-svn: 62322
 2009-01-16 15:54:57 +00:00
Misha Brukman
da77da48f3 Removed trailing whitespace. 
llvm-svn: 62000
 2009-01-09 19:25:42 +00:00
Dan Gohman
c0280e8867 Move the conversion to intptr_t to a separate statement. This 
avoids GCC's warning even on 64-bit hosts.

llvm-svn: 60706
 2008-12-08 17:41:24 +00:00
Dan Gohman
42bd5cffc9 Use intptr_t instead of unsigned here, which is more appropriate 
in a really obscure way, but more importantly has the side effect
of avoiding a GCC warning in the case that IntType is bool.

llvm-svn: 60677
 2008-12-07 21:28:00 +00:00
Chris Lattner
ee7fbed62d add the rest of the comparison routines. 
llvm-svn: 60303
 2008-11-30 19:10:41 +00:00
Torok Edwin
7f54c665a2 protect against negative values that would exceed allowed bit width 
llvm-svn: 60239
 2008-11-29 08:52:45 +00:00
Chris Lattner
ce03bccd7e apparently GCC doesn't believe that I understand C 
precedence rules.  Pacify it.

llvm-svn: 60237
 2008-11-29 08:36:39 +00:00
Duncan Sands
845f6467ba Typo fix. 
llvm-svn: 60236
 2008-11-29 08:03:35 +00:00
Chris Lattner
7ae87447ed Fix sentinels to use correctly 'aligned' pointers. 
llvm-svn: 60229
 2008-11-29 01:36:16 +00:00
Chris Lattner
070df849e9 Fix spello, add DenseMapInfo specialization for PointerIntPair. 
llvm-svn: 60228
 2008-11-29 01:18:05 +00:00
Chris Lattner
b41c45dbdf fix comment typo 
llvm-svn: 60227
 2008-11-28 23:57:26 +00:00
Chris Lattner
507e71fce3 fix a bug. 
llvm-svn: 60225
 2008-11-28 23:36:15 +00:00
Chris Lattner
d8b755ed95 add a generic "bitmangled pointer" class, which allows a parameterized 
pointer and integer type to be used.

llvm-svn: 60224
 2008-11-28 23:31:44 +00:00