6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-01-09 10:31:14 +00:00
Code Issues Projects Releases Wiki Activity

several bitfixes to JumpToBit

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36616 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2007-05-01 05:51:32 +00:00
parent 866971474c
commit 2bbb703e4f
1 changed files with 7 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
include/llvm/Bitcode/BitstreamReader.h
View File

@ -93,16 +93,19 @@ public:
/// JumpToBit - Reset the stream to the specified bit number. /// JumpToBit - Reset the stream to the specified bit number.
void JumpToBit(uint64_t BitNo) { void JumpToBit(uint64_t BitNo) {
unsigned WordNo = BitNo/32; unsigned ByteNo = (BitNo/8) & ~3;
unsigned WordBitNo = BitNo & 31; unsigned WordBitNo = BitNo & 31;
assert(WordNo < (unsigned)(LastChar-FirstChar) && "Invalid location"); assert(ByteNo < (unsigned)(LastChar-FirstChar) && "Invalid location");
// Move the cursor to the right word. // Move the cursor to the right word.
NextChar = FirstChar+WordNo; NextChar = FirstChar+ByteNo;
BitsInCurWord = 0; BitsInCurWord = 0;
// Skip over any bits that are already consumed. // Skip over any bits that are already consumed.
if (WordBitNo) Read(WordBitNo); if (WordBitNo) {
NextChar -= 4;
Read(WordBitNo);
}
} }
/// GetAbbrevIDWidth - Return the number of bits used to encode an abbrev #. /// GetAbbrevIDWidth - Return the number of bits used to encode an abbrev #.