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Call the InsertAtEndOfBasicBlock hook if the usesCustomDAGSchedInserter
flag is set on an instruction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23098 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -20,6 +20,7 @@
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#include "llvm/CodeGen/SSARegMap.h"
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#include "llvm/Target/TargetMachine.h"
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#include "llvm/Target/TargetInstrInfo.h"
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#include "llvm/Target/TargetLowering.h"
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#include "llvm/Support/CommandLine.h"
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using namespace llvm;
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@ -166,7 +167,13 @@ unsigned SimpleSched::Emit(SDOperand Op) {
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}
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// Now that we have emitted all operands, emit this instruction itself.
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BB->insert(BB->end(), MI);
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if ((II.Flags & M_USES_CUSTOM_DAG_SCHED_INSERTION) == 0) {
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BB->insert(BB->end(), MI);
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} else {
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// Insert this instruction into the end of the basic block, potentially
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// taking some custom action.
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BB = DAG.getTargetLoweringInfo().InsertAtEndOfBasicBlock(MI, BB);
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}
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} else {
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switch (Op.getOpcode()) {
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default:
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@ -855,6 +855,20 @@ void SelectionDAGLowering::visitFree(FreeInst &I) {
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DAG.setRoot(Result.second);
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}
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// InsertAtEndOfBasicBlock - This method should be implemented by targets that
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// mark instructions with the 'usesCustomDAGSchedInserter' flag. These
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// instructions are special in various ways, which require special support to
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// insert. The specified MachineInstr is created but not inserted into any
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// basic blocks, and the scheduler passes ownership of it to this method.
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MachineBasicBlock *TargetLowering::InsertAtEndOfBasicBlock(MachineInstr *MI,
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MachineBasicBlock *MBB) {
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std::cerr << "If a target marks an instruction with "
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"'usesCustomDAGSchedInserter', it must implement "
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"TargetLowering::InsertAtEndOfBasicBlock!\n";
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abort();
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return 0;
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}
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SDOperand TargetLowering::LowerVAStart(SDOperand Chain,
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SDOperand VAListP, Value *VAListV,
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SelectionDAG &DAG) {
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