6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-07-22 09:29:31 +00:00
Code Issues Projects Releases Wiki Activity

Fix undefined shifts and abs in Alpha backend. Based on patch by Ahmed Charles.

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141909 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eli Friedman 2011-10-13 23:13:35 +00:00
parent 7d2bc08254
commit 5bd7ff2128
1 changed files with 3 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
lib/Target/Alpha/AlphaISelDAGToDAG.cpp
View File

@ -80,7 +80,7 @@ namespace {
// Otherwise we don't know that the it's okay to zapnot this entire
// byte. Only do this iff we can prove that the missing bits are
// already null, so the bytezap doesn't need to really null them.
BitsToCheck |= ~Constant & (0xFF << 8*i);
BitsToCheck |= ~Constant & (0xFFULL << 8*i);
}
}
}
@ -114,9 +114,8 @@ namespace {
if (!x) return 0;
unsigned at = CountLeadingZeros_64(x);
uint64_t complow = 1ULL << (63 - at);
uint64_t comphigh = 1ULL << (64 - at);
//cerr << x << ":" << complow << ":" << comphigh << "\n";
if (abs64(complow - x) <= abs64(comphigh - x))
uint64_t comphigh = complow << 1;
if (x - complow <= comphigh - x)
return complow;
else
return comphigh;