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Add a function object to compare the first or second component of a std::pair.

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Replace instances of this scattered around the code base.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189169 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer
2013-08-24 12:54:27 +00:00
parent 4321d4e4a9
commit 0b6962f4be
5 changed files with 28 additions and 55 deletions
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lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+2 -7
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@@ -1287,12 +1287,6 @@ void AsmPrinter::EmitLLVMUsedList(const ConstantArray *InitList) {
}
}
typedef std::pair<unsigned, Constant*> Structor;
static bool priority_order(const Structor& lhs, const Structor& rhs) {
return lhs.first < rhs.first;
}
/// EmitXXStructorList - Emit the ctor or dtor list taking into account the init
/// priority.
void AsmPrinter::EmitXXStructorList(const Constant *List, bool isCtor) {
@@ -1309,6 +1303,7 @@ void AsmPrinter::EmitXXStructorList(const Constant *List, bool isCtor) {
!isa<PointerType>(ETy->getTypeAtIndex(1U))) return; // Not (int, ptr).
// Gather the structors in a form that's convenient for sorting by priority.
typedef std::pair<unsigned, Constant *> Structor;
SmallVector<Structor, 8> Structors;
for (unsigned i = 0, e = InitList->getNumOperands(); i != e; ++i) {
ConstantStruct *CS = dyn_cast<ConstantStruct>(InitList->getOperand(i));
@@ -1324,7 +1319,7 @@ void AsmPrinter::EmitXXStructorList(const Constant *List, bool isCtor) {
// Emit the function pointers in the target-specific order
const DataLayout *TD = TM.getDataLayout();
unsigned Align = Log2_32(TD->getPointerPrefAlignment());
std::stable_sort(Structors.begin(), Structors.end(), priority_order);
std::stable_sort(Structors.begin(), Structors.end(), less_first());
for (unsigned i = 0, e = Structors.size(); i != e; ++i) {
const MCSection *OutputSection =
(isCtor ?