[ARM] Pass a callback to FunctionPass constructors to enable skipping execution
on a per-function basis.
Previously some of the passes were conditionally added to ARM's pass pipeline
based on the target machine's subtarget. This patch makes changes to add those
passes unconditionally and execute them conditonally based on the predicate
functor passed to the pass constructors. This enables running different sets of
passes for different functions in the module.
rdar://problem/20542263
Differential Revision: http://reviews.llvm.org/D8717
llvm-svn: 239325
diff --git a/llvm/lib/CodeGen/IfConversion.cpp b/llvm/lib/CodeGen/IfConversion.cpp
index 0d59c72..e861ceb 100644
--- a/llvm/lib/CodeGen/IfConversion.cpp
+++ b/llvm/lib/CodeGen/IfConversion.cpp
@@ -170,9 +170,12 @@
bool PreRegAlloc;
bool MadeChange;
int FnNum;
+ std::function<bool(const Function &)> PredicateFtor;
+
public:
static char ID;
- IfConverter() : MachineFunctionPass(ID), FnNum(-1) {
+ IfConverter(std::function<bool(const Function &)> Ftor = nullptr)
+ : MachineFunctionPass(ID), FnNum(-1), PredicateFtor(Ftor) {
initializeIfConverterPass(*PassRegistry::getPassRegistry());
}
@@ -270,6 +273,9 @@
INITIALIZE_PASS_END(IfConverter, "if-converter", "If Converter", false, false)
bool IfConverter::runOnMachineFunction(MachineFunction &MF) {
+ if (PredicateFtor && !PredicateFtor(*MF.getFunction()))
+ return false;
+
const TargetSubtargetInfo &ST = MF.getSubtarget();
TLI = ST.getTargetLowering();
TII = ST.getInstrInfo();
@@ -1691,3 +1697,8 @@
ToBBI.IsAnalyzed = false;
FromBBI.IsAnalyzed = false;
}
+
+FunctionPass *
+llvm::createIfConverter(std::function<bool(const Function &)> Ftor) {
+ return new IfConverter(Ftor);
+}