ADT/STLExtras: Introduce llvm::empty; NFC
This is modeled after C++17 std::empty().
Differential Revision: https://reviews.llvm.org/D53909
llvm-svn: 345679
diff --git a/llvm/lib/CodeGen/GlobalISel/InstructionSelector.cpp b/llvm/lib/CodeGen/GlobalISel/InstructionSelector.cpp
index 5e77fcb..38913e4 100644
--- a/llvm/lib/CodeGen/GlobalISel/InstructionSelector.cpp
+++ b/llvm/lib/CodeGen/GlobalISel/InstructionSelector.cpp
@@ -80,5 +80,5 @@
return true;
return !MI.mayLoadOrStore() && !MI.hasUnmodeledSideEffects() &&
- MI.implicit_operands().begin() == MI.implicit_operands().end();
+ empty(MI.implicit_operands());
}
diff --git a/llvm/lib/CodeGen/GlobalISel/LegalizerInfo.cpp b/llvm/lib/CodeGen/GlobalISel/LegalizerInfo.cpp
index b6ed265..ca776de 100644
--- a/llvm/lib/CodeGen/GlobalISel/LegalizerInfo.cpp
+++ b/llvm/lib/CodeGen/GlobalISel/LegalizerInfo.cpp
@@ -298,8 +298,7 @@
std::initializer_list<unsigned> Opcodes) {
unsigned Representative = *Opcodes.begin();
- assert(Opcodes.begin() != Opcodes.end() &&
- Opcodes.begin() + 1 != Opcodes.end() &&
+ assert(!empty(Opcodes) && Opcodes.begin() + 1 != Opcodes.end() &&
"Initializer list must have at least two opcodes");
for (auto I = Opcodes.begin() + 1, E = Opcodes.end(); I != E; ++I)
diff --git a/llvm/lib/CodeGen/GlobalISel/RegBankSelect.cpp b/llvm/lib/CodeGen/GlobalISel/RegBankSelect.cpp
index 9e2d48d..6bb48dc 100644
--- a/llvm/lib/CodeGen/GlobalISel/RegBankSelect.cpp
+++ b/llvm/lib/CodeGen/GlobalISel/RegBankSelect.cpp
@@ -140,7 +140,7 @@
return false;
assert(ValMapping.NumBreakDowns == 1 && "Not yet implemented");
// An empty range of new register means no repairing.
- assert(NewVRegs.begin() != NewVRegs.end() && "We should not have to repair");
+ assert(!empty(NewVRegs) && "We should not have to repair");
// Assume we are repairing a use and thus, the original reg will be
// the source of the repairing.
diff --git a/llvm/lib/CodeGen/GlobalISel/RegisterBankInfo.cpp b/llvm/lib/CodeGen/GlobalISel/RegisterBankInfo.cpp
index dd15567..28404e5 100644
--- a/llvm/lib/CodeGen/GlobalISel/RegisterBankInfo.cpp
+++ b/llvm/lib/CodeGen/GlobalISel/RegisterBankInfo.cpp
@@ -426,7 +426,7 @@
"This mapping is too complex for this function");
iterator_range<SmallVectorImpl<unsigned>::const_iterator> NewRegs =
OpdMapper.getVRegs(OpIdx);
- if (NewRegs.begin() == NewRegs.end()) {
+ if (empty(NewRegs)) {
LLVM_DEBUG(dbgs() << " has not been repaired, nothing to be done\n");
continue;
}