RPCS3/llvm-mirror
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2024-10-28 22:42:52 +01:00
Code Issues Projects Releases Wiki Activity

Fix Shootout-C++/wc, which was broken by my recent changes to emit fewer

Browse Source 
reg-reg copies.  The necessary conditions for this bug are a GEP that is
used outside the basic block in which it is defined, whose components
other than the pointer are all constant zero, and where the use is
selected before the definition (backwards branch to successsor block).

llvm-svn: 18084
This commit is contained in:
Nate Begeman 2004-11-21 05:14:06 +00:00
parent ed19f4fe7d
commit 7ec36ad70f
1 changed files with 6 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
lib/Target/PowerPC/PPC32ISelSimple.cpp
View File

@ -3835,18 +3835,19 @@ void PPC32ISel::emitGEPOperation(MachineBasicBlock *MBB,
unsigned TargetReg = getReg(GEPI, MBB, IP);
unsigned basePtrReg = getReg(Src, MBB, IP);
if ((indexReg == 0) && remainder->isNullValue())
RegMap[GEPI] = basePtrReg;
if ((indexReg == 0) && remainder->isNullValue()) {
BuildMI(*MBB, IP, PPC::OR, 2, TargetReg).addReg(basePtrReg)
.addReg(basePtrReg);
return;
}
if (!remainder->isNullValue()) {
unsigned TmpReg = (indexReg == 0) ? TargetReg : makeAnotherReg(Type::IntTy);
emitBinaryConstOperation(MBB, IP, basePtrReg, remainder, 0, TmpReg);
basePtrReg = TmpReg;
}
if (indexReg != 0) {
if (indexReg != 0)
BuildMI(*MBB, IP, PPC::ADD, 2, TargetReg).addReg(indexReg)
.addReg(basePtrReg);
}
}
/// visitAllocaInst - If this is a fixed size alloca, allocate space from the