Hexagon: Remove implicit ilist iterator conversions, NFC
There are two things out of the ordinary in this commit. First, I made
a loop obviously "infinite" in HexagonInstrInfo.cpp. After checking if
an instruction was at the beginning of a basic block (in which case,
`break`), the loop decremented and checked the iterator for `nullptr` as
the loop condition. This has never been possible (the prev pointers are
always been circular, so even with the weird ilist/iplist
implementation, this isn't been possible), so I removed the condition.
Second, in HexagonAsmPrinter.cpp there was another case of comparing a
`MachineBasicBlock::instr_iterator` against `MachineBasicBlock::end()`
(which returns `MachineBasicBlock::iterator`). While not incorrect,
it's fragile. I switched this to `::instr_end()`.
All that said, no functionality change intended here.
llvm-svn: 250778
diff --git a/llvm/lib/Target/Hexagon/HexagonPeephole.cpp b/llvm/lib/Target/Hexagon/HexagonPeephole.cpp
index 93dcbe2..dca3121 100644
--- a/llvm/lib/Target/Hexagon/HexagonPeephole.cpp
+++ b/llvm/lib/Target/Hexagon/HexagonPeephole.cpp
@@ -124,7 +124,7 @@
// Loop over all of the basic blocks.
for (MachineFunction::iterator MBBb = MF.begin(), MBBe = MF.end();
MBBb != MBBe; ++MBBb) {
- MachineBasicBlock* MBB = MBBb;
+ MachineBasicBlock *MBB = &*MBBb;
PeepholeMap.clear();
PeepholeDoubleRegsMap.clear();