RPCS3/llvm
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm.git synced 2025-01-16 23:19:37 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Fix a bug where we were useing HA to get the high part, which seems like it

Browse Source 
could cause a miscompile.  Fixing this didn't fix the two programs that fail
though.  :(

This also changes the implementation to follow the pattern selector more
closely, causing us to select 0 to li instead of lis.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23189 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2005-09-01 19:38:28 +00:00
parent 50ff55c2c7
commit 393ecd6d2d
1 changed files with 10 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
lib/Target/PowerPC/PPCISelDAGToDAG.cpp
View File

@ -685,22 +685,21 @@ SDOperand PPC32DAGToDAGISel::Select(SDOperand Op) {
case ISD::Constant: {
assert(N->getValueType(0) == MVT::i32);
unsigned v = (unsigned)cast<ConstantSDNode>(N)->getValue();
unsigned Hi = HA16(v);
unsigned Lo = Lo16(v);
// NOTE: This doesn't use SelectNodeTo, because doing that will prevent
// folding shared immediates into other the second instruction that
// uses it.
if (Hi && Lo) {
SDOperand Top = CurDAG->getTargetNode(PPC::LIS, MVT::i32,
getI32Imm(v >> 16));
return CurDAG->getTargetNode(PPC::ORI, MVT::i32, Top,
getI32Imm(v & 0xFFFF));
} else if (Lo) {
if (isInt16(v))
return CurDAG->getTargetNode(PPC::LI, MVT::i32, getI32Imm(v));
} else {
return CurDAG->getTargetNode(PPC::LIS, MVT::i32, getI32Imm(v >> 16));
}
unsigned Hi = Hi16(v);
unsigned Lo = Lo16(v);
if (!Lo)
return CurDAG->getTargetNode(PPC::LIS, MVT::i32, getI32Imm(Hi));
SDOperand Top = CurDAG->getTargetNode(PPC::LIS, MVT::i32, getI32Imm(Hi));
return CurDAG->getTargetNode(PPC::ORI, MVT::i32, Top, getI32Imm(Lo));
}
case ISD::UNDEF:
if (N->getValueType(0) == MVT::i32)