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authorHal Finkel <hfinkel@anl.gov>2015-01-13 17:48:04 +0000
committerHal Finkel <hfinkel@anl.gov>2015-01-13 17:48:04 +0000
commit0ad96c818cc5fd086c820b3b15650222020f4ebf (patch)
tree034a706f82429c009f3e0fdc25832a41913a8919 /llvm/lib/CodeGen
parentdf87f9383b6e13e9bdaf3fe5c6a7d914fcc7def6 (diff)
downloadbcm5719-llvm-0ad96c818cc5fd086c820b3b15650222020f4ebf.tar.gz
bcm5719-llvm-0ad96c818cc5fd086c820b3b15650222020f4ebf.zip
[StackMaps] Mark in CallLoweringInfo when lowering a patchpoint
While, generally speaking, the process of lowering arguments for a patchpoint is the same as lowering a regular indirect call, on some targets it may not be exactly the same. Targets may not, for example, want to add additional register dependencies that apply only to making cross-DSO calls through linker stubs, may not want to load additional registers out of function descriptors, and may not want to add additional side-effect-causing instructions that cannot be removed later with the call itself being generated. The PowerPC target will use this in a future commit (for all of the reasons stated above). llvm-svn: 225806
Diffstat (limited to 'llvm/lib/CodeGen')
-rw-r--r--llvm/lib/CodeGen/SelectionDAG/FastISel.cpp1
-rw-r--r--llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp7
-rw-r--r--llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h3
3 files changed, 7 insertions, 4 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp b/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp
index 8facbc28e40..c87a0854db6 100644
--- a/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp
@@ -728,6 +728,7 @@ bool FastISel::selectPatchpoint(const CallInst *I) {
// For AnyRegCC the arguments are lowered later on manually.
unsigned NumCallArgs = IsAnyRegCC ? 0 : NumArgs;
CallLoweringInfo CLI;
+ CLI.setIsPatchPoint();
if (!lowerCallOperands(I, NumMetaOpers, NumCallArgs, Callee, IsAnyRegCC, CLI))
return false;
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
index 068a5c4eb7e..151bc724df6 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -7023,7 +7023,8 @@ std::pair<SDValue, SDValue>
SelectionDAGBuilder::lowerCallOperands(ImmutableCallSite CS, unsigned ArgIdx,
unsigned NumArgs, SDValue Callee,
bool UseVoidTy,
- MachineBasicBlock *LandingPad) {
+ MachineBasicBlock *LandingPad,
+ bool IsPatchPoint) {
TargetLowering::ArgListTy Args;
Args.reserve(NumArgs);
@@ -7046,7 +7047,7 @@ SelectionDAGBuilder::lowerCallOperands(ImmutableCallSite CS, unsigned ArgIdx,
TargetLowering::CallLoweringInfo CLI(DAG);
CLI.setDebugLoc(getCurSDLoc()).setChain(getRoot())
.setCallee(CS.getCallingConv(), retTy, Callee, std::move(Args), NumArgs)
- .setDiscardResult(CS->use_empty());
+ .setDiscardResult(CS->use_empty()).setIsPatchPoint(IsPatchPoint);
return lowerInvokable(CLI, LandingPad);
}
@@ -7178,7 +7179,7 @@ void SelectionDAGBuilder::visitPatchpoint(ImmutableCallSite CS,
unsigned NumCallArgs = IsAnyRegCC ? 0 : NumArgs;
std::pair<SDValue, SDValue> Result =
lowerCallOperands(CS, NumMetaOpers, NumCallArgs, Callee, IsAnyRegCC,
- LandingPad);
+ LandingPad, true);
SDNode *CallEnd = Result.second.getNode();
if (HasDef && (CallEnd->getOpcode() == ISD::CopyFromReg))
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h
index b2517b93e45..8216a0223cd 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h
@@ -653,7 +653,8 @@ public:
unsigned NumArgs,
SDValue Callee,
bool UseVoidTy = false,
- MachineBasicBlock *LandingPad = nullptr);
+ MachineBasicBlock *LandingPad = nullptr,
+ bool IsPatchPoint = false);
/// UpdateSplitBlock - When an MBB was split during scheduling, update the
/// references that need to refer to the last resulting block.
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