RPCS3/llvm
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm.git synced 2024-12-14 15:39:06 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Address Evan's comments for r151877.

Browse Source 
Specifically, remove the magic number when checking to see if the copy has a 
glue operand and simplify the checking logic.

rdar://10930395


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152041 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chad Rosier 2012-03-05 19:27:12 +00:00
parent af71f16f93
commit c8d7eea264
1 changed files with 6 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
lib/Target/X86/X86ISelLowering.cpp
View File

@ -1585,13 +1585,12 @@ bool X86TargetLowering::isUsedByReturnOnly(SDNode *N) const {
return false; return false;
SDNode *Copy = *N->use_begin(); SDNode *Copy = *N->use_begin();
if (Copy->getOpcode() != ISD::CopyToReg && if (Copy->getOpcode() == ISD::CopyToReg) {
Copy->getOpcode() != ISD::FP_EXTEND) // If the copy has a glue operand, we conservatively assume it isn't safe to
return false; // perform a tail call.
if (Copy->getOperand(Copy->getNumOperands()-1).getValueType() == MVT::Glue)
// If anything is glued to the copy, then we can't safely perform a tail call. return false;
if (Copy->getOpcode() == ISD::CopyToReg && } else if (Copy->getOpcode() != ISD::FP_EXTEND)
Copy->getNumOperands() == 4)
return false; return false;
bool HasRet = false; bool HasRet = false;