RPCS3/llvm-mirror
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2025-01-02 17:09:05 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Add more debugging output to ARMConstantIslandPass.

Browse Source 
llvm-svn: 153788
This commit is contained in:
Jakob Stoklund Olesen 2012-03-31 00:06:42 +00:00
parent 188c9214c3
commit 91f86a31e7
1 changed files with 16 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
lib/Target/ARM/ARMConstantIslandPass.cpp
View File

@ -346,11 +346,19 @@ void ARMConstantIslands::verify() {
assert(BBInfo[MBBId].Offset % (1u << Align) == 0);
assert(!MBBId || BBInfo[MBBId - 1].postOffset() <= BBInfo[MBBId].Offset);
}
DEBUG(dbgs() << "Verifying " << CPUsers.size() << " CP users.\n");
for (unsigned i = 0, e = CPUsers.size(); i != e; ++i) {
CPUser &U = CPUsers[i];
unsigned UserOffset = getUserOffset(U);
assert(isCPEntryInRange(U.MI, UserOffset, U.CPEMI, U.getMaxDisp(),
U.NegOk) && "Constant pool entry out of range!");
if (isCPEntryInRange(U.MI, UserOffset, U.CPEMI, U.getMaxDisp(), U.NegOk,
/* DoDump = */ true)) {
DEBUG(dbgs() << "OK\n");
continue;
}
DEBUG(dbgs() << "Out of range.\n");
dumpBBs();
DEBUG(MF->dump());
llvm_unreachable("Constant pool entry out of range!");
}
#endif
}
@ -1742,6 +1750,7 @@ bool ARMConstantIslands::optimizeThumb2Instructions() {
// FIXME: Check if offset is multiple of scale if scale is not 4.
if (isCPEntryInRange(U.MI, UserOffset, U.CPEMI, MaxOffs, false, true)) {
DEBUG(dbgs() << "Shrink: " << *U.MI);
U.MI->setDesc(TII->get(NewOpc));
MachineBasicBlock *MBB = U.MI->getParent();
BBInfo[MBB->getNumber()].Size -= 2;
@ -1783,6 +1792,7 @@ bool ARMConstantIslands::optimizeThumb2Branches() {
unsigned MaxOffs = ((1 << (Bits-1))-1) * Scale;
MachineBasicBlock *DestBB = Br.MI->getOperand(0).getMBB();
if (isBBInRange(Br.MI, DestBB, MaxOffs)) {
DEBUG(dbgs() << "Shrink branch: " << *Br.MI);
Br.MI->setDesc(TII->get(NewOpc));
MachineBasicBlock *MBB = Br.MI->getParent();
BBInfo[MBB->getNumber()].Size -= 2;
@ -1826,6 +1836,7 @@ bool ARMConstantIslands::optimizeThumb2Branches() {
CmpMI->getOperand(1).getImm() == 0 &&
isARMLowRegister(Reg)) {
MachineBasicBlock *MBB = Br.MI->getParent();
DEBUG(dbgs() << "Fold: " << *CmpMI << " and: " << *Br.MI);
MachineInstr *NewBR =
BuildMI(*MBB, CmpMI, Br.MI->getDebugLoc(), TII->get(NewOpc))
.addReg(Reg).addMBB(DestBB,Br.MI->getOperand(0).getTargetFlags());
@ -1942,11 +1953,14 @@ bool ARMConstantIslands::optimizeThumb2JumpTables() {
if (!OptOk)
continue;
DEBUG(dbgs() << "Shrink JT: " << *MI << " addr: " << *AddrMI
<< " lea: " << *LeaMI);
unsigned Opc = ByteOk ? ARM::t2TBB_JT : ARM::t2TBH_JT;
MachineInstr *NewJTMI = BuildMI(MBB, MI->getDebugLoc(), TII->get(Opc))
.addReg(IdxReg, getKillRegState(IdxRegKill))
.addJumpTableIndex(JTI, JTOP.getTargetFlags())
.addImm(MI->getOperand(JTOpIdx+1).getImm());
DEBUG(dbgs() << "BB#" << MBB->getNumber() << ": " << *NewJTMI);
// FIXME: Insert an "ALIGN" instruction to ensure the next instruction
// is 2-byte aligned. For now, asm printer will fix it up.
unsigned NewSize = TII->GetInstSizeInBytes(NewJTMI);