RPCS3/llvm-mirror
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2024-11-24 11:42:57 +01:00
Code Issues Projects Releases Wiki Activity

Simplify CCState's use of register aliases.

Browse Source 
llvm-svn: 121806
This commit is contained in:
Jakob Stoklund Olesen 2010-12-14 23:28:01 +00:00
parent 03856151db
commit 7ee6f83da1
1 changed files with 3 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
lib/CodeGen/CallingConvLower.cpp
View File

@ -51,11 +51,9 @@ void CCState::HandleByVal(unsigned ValNo, MVT ValVT,
/// MarkAllocated - Mark a register and all of its aliases as allocated.
void CCState::MarkAllocated(unsigned Reg) {
UsedRegs[Reg/32] |= 1 << (Reg&31);
if (const unsigned *RegAliases = TRI.getAliasSet(Reg))
for (; (Reg = *RegAliases); ++RegAliases)
UsedRegs[Reg/32] |= 1 << (Reg&31);
for (const unsigned *Alias = TRI.getOverlaps(Reg);
unsigned Reg = *Alias; ++Alias)
UsedRegs[Reg/32] |= 1 << (Reg&31);
}
/// AnalyzeFormalArguments - Analyze an array of argument values,