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7 Commits

Author SHA1 Message Date
Jakob Stoklund Olesen 6ccbdcda36 Add portable bit mask operations to BitVector. 
BitVector uses the native word size for its internal representation.
That doesn't work well for literal bit masks in source code.

This patch adds BitVector operations to efficiently apply literal bit
masks specified as arrays of uint32_t.  Since each array entry always
holds exactly 32 bits, these portable bit masks can be source code
literals, probably produced by TableGen.

llvm-svn: 148272
 2012-01-17 01:24:32 +00:00
Dan Gohman b179cb2ce7 Add an all() method to BitVector, for testing whether all bits are set. 
llvm-svn: 114830
 2010-09-27 15:48:37 +00:00
Dan Gohman b74155db1e Update BitVectorTest.cpp to stay in sync with SmallBitVectorTest.cpp, 
and fix a bug in BitVector's reference proxy class which this exposed.

llvm-svn: 102768
 2010-04-30 20:50:28 +00:00
Benjamin Kramer 4b86e9b7a6 Silence GCC warnings. 
llvm-svn: 95779
 2010-02-10 13:34:02 +00:00
Dan Gohman e69b99baaf Implement operators |=, &=, and ^= for SmallBitVector, and remove the 
restriction in BitVector for |= and ^= that the operand must be the
same length.

llvm-svn: 95768
 2010-02-10 05:54:04 +00:00
Dale Johannesen 7c7b9a2807 Disable unittests/ADT/BitVectorTest on PPC Darwin. 
It fails with a release build only, for reasons
as yet unknown.  (If there's a better way to Xfail
things here let me know, doesn't seem to be any
prior art in unittests.)

llvm-svn: 95700
 2010-02-09 22:15:27 +00:00
Dan Gohman 5976e7d5dd Add a SmallBitVector class, which mimics BitVector but uses only 
a single pointer (PointerIntPair) member. In "small" mode, the
pointer field is reinterpreted as a set of bits. In "large" mode,
the pointer points to a heap-allocated object.

Also, give BitVector empty and swap functions.

And, add some simple unittests for BitVector and SmallBitVector.

llvm-svn: 92730
 2010-01-05 15:04:49 +00:00