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authorrdivacky <rdivacky@FreeBSD.org>2010-07-13 17:19:57 +0000
committerrdivacky <rdivacky@FreeBSD.org>2010-07-13 17:19:57 +0000
commit9112829d76cbb8e0c8ef51bbc2d7d1be48cd7b74 (patch)
tree9de1c5f67a98cd0e73c60838396486c984f63ac2 /lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp
parent1e3dec662ea18131c495db50caccc57f77b7a5fe (diff)
downloadFreeBSD-src-9112829d76cbb8e0c8ef51bbc2d7d1be48cd7b74.zip
FreeBSD-src-9112829d76cbb8e0c8ef51bbc2d7d1be48cd7b74.tar.gz
Update LLVM to r108243.
Diffstat (limited to 'lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp')
-rw-r--r--lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp63
1 files changed, 37 insertions, 26 deletions
diff --git a/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp b/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp
index 65c36c1..928e1ec 100644
--- a/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp
+++ b/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp
@@ -13,7 +13,7 @@
//===----------------------------------------------------------------------===//
#define DEBUG_TYPE "function-lowering-info"
-#include "FunctionLoweringInfo.h"
+#include "llvm/CodeGen/FunctionLoweringInfo.h"
#include "llvm/DerivedTypes.h"
#include "llvm/Function.h"
#include "llvm/Instructions.h"
@@ -30,7 +30,6 @@
#include "llvm/Target/TargetData.h"
#include "llvm/Target/TargetFrameInfo.h"
#include "llvm/Target/TargetInstrInfo.h"
-#include "llvm/Target/TargetIntrinsicInfo.h"
#include "llvm/Target/TargetLowering.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/Support/Debug.h"
@@ -47,9 +46,11 @@ static bool isUsedOutsideOfDefiningBlock(const Instruction *I) {
if (isa<PHINode>(I)) return true;
const BasicBlock *BB = I->getParent();
for (Value::const_use_iterator UI = I->use_begin(), E = I->use_end();
- UI != E; ++UI)
- if (cast<Instruction>(*UI)->getParent() != BB || isa<PHINode>(*UI))
+ UI != E; ++UI) {
+ const User *U = *UI;
+ if (cast<Instruction>(U)->getParent() != BB || isa<PHINode>(U))
return true;
+ }
return false;
}
@@ -64,9 +65,11 @@ static bool isOnlyUsedInEntryBlock(const Argument *A, bool EnableFastISel) {
const BasicBlock *Entry = A->getParent()->begin();
for (Value::const_use_iterator UI = A->use_begin(), E = A->use_end();
- UI != E; ++UI)
- if (cast<Instruction>(*UI)->getParent() != Entry || isa<SwitchInst>(*UI))
+ UI != E; ++UI) {
+ const User *U = *UI;
+ if (cast<Instruction>(U)->getParent() != Entry || isa<SwitchInst>(U))
return false; // Use not in entry block.
+ }
return true;
}
@@ -74,12 +77,18 @@ FunctionLoweringInfo::FunctionLoweringInfo(const TargetLowering &tli)
: TLI(tli) {
}
-void FunctionLoweringInfo::set(const Function &fn, MachineFunction &mf,
- bool EnableFastISel) {
+void FunctionLoweringInfo::set(const Function &fn, MachineFunction &mf) {
Fn = &fn;
MF = &mf;
RegInfo = &MF->getRegInfo();
+ // Check whether the function can return without sret-demotion.
+ SmallVector<ISD::OutputArg, 4> Outs;
+ GetReturnInfo(Fn->getReturnType(),
+ Fn->getAttributes().getRetAttributes(), Outs, TLI);
+ CanLowerReturn = TLI.CanLowerReturn(Fn->getCallingConv(), Fn->isVarArg(),
+ Outs, Fn->getContext());
+
// Create a vreg for each argument register that is not dead and is used
// outside of the entry block for the function.
for (Function::const_arg_iterator AI = Fn->arg_begin(), E = Fn->arg_end();
@@ -172,31 +181,33 @@ void FunctionLoweringInfo::clear() {
#endif
LiveOutRegInfo.clear();
ArgDbgValues.clear();
+ RegFixups.clear();
}
-unsigned FunctionLoweringInfo::MakeReg(EVT VT) {
+/// CreateReg - Allocate a single virtual register for the given type.
+unsigned FunctionLoweringInfo::CreateReg(EVT VT) {
return RegInfo->createVirtualRegister(TLI.getRegClassFor(VT));
}
-/// CreateRegForValue - Allocate the appropriate number of virtual registers of
+/// CreateRegs - Allocate the appropriate number of virtual registers of
/// the correctly promoted or expanded types. Assign these registers
/// consecutive vreg numbers and return the first assigned number.
///
/// In the case that the given value has struct or array type, this function
/// will assign registers for each member or element.
///
-unsigned FunctionLoweringInfo::CreateRegForValue(const Value *V) {
+unsigned FunctionLoweringInfo::CreateRegs(const Type *Ty) {
SmallVector<EVT, 4> ValueVTs;
- ComputeValueVTs(TLI, V->getType(), ValueVTs);
+ ComputeValueVTs(TLI, Ty, ValueVTs);
unsigned FirstReg = 0;
for (unsigned Value = 0, e = ValueVTs.size(); Value != e; ++Value) {
EVT ValueVT = ValueVTs[Value];
- EVT RegisterVT = TLI.getRegisterType(V->getContext(), ValueVT);
+ EVT RegisterVT = TLI.getRegisterType(Ty->getContext(), ValueVT);
- unsigned NumRegs = TLI.getNumRegisters(V->getContext(), ValueVT);
+ unsigned NumRegs = TLI.getNumRegisters(Ty->getContext(), ValueVT);
for (unsigned i = 0; i != NumRegs; ++i) {
- unsigned R = MakeReg(RegisterVT);
+ unsigned R = CreateReg(RegisterVT);
if (!FirstReg) FirstReg = R;
}
}
@@ -208,7 +219,7 @@ unsigned FunctionLoweringInfo::CreateRegForValue(const Value *V) {
void llvm::AddCatchInfo(const CallInst &I, MachineModuleInfo *MMI,
MachineBasicBlock *MBB) {
// Inform the MachineModuleInfo of the personality for this landing pad.
- const ConstantExpr *CE = cast<ConstantExpr>(I.getOperand(2));
+ const ConstantExpr *CE = cast<ConstantExpr>(I.getArgOperand(1));
assert(CE->getOpcode() == Instruction::BitCast &&
isa<Function>(CE->getOperand(0)) &&
"Personality should be a function");
@@ -217,18 +228,18 @@ void llvm::AddCatchInfo(const CallInst &I, MachineModuleInfo *MMI,
// Gather all the type infos for this landing pad and pass them along to
// MachineModuleInfo.
std::vector<const GlobalVariable *> TyInfo;
- unsigned N = I.getNumOperands();
+ unsigned N = I.getNumArgOperands();
- for (unsigned i = N - 1; i > 2; --i) {
- if (const ConstantInt *CI = dyn_cast<ConstantInt>(I.getOperand(i))) {
+ for (unsigned i = N - 1; i > 1; --i) {
+ if (const ConstantInt *CI = dyn_cast<ConstantInt>(I.getArgOperand(i))) {
unsigned FilterLength = CI->getZExtValue();
unsigned FirstCatch = i + FilterLength + !FilterLength;
- assert (FirstCatch <= N && "Invalid filter length");
+ assert(FirstCatch <= N && "Invalid filter length");
if (FirstCatch < N) {
TyInfo.reserve(N - FirstCatch);
for (unsigned j = FirstCatch; j < N; ++j)
- TyInfo.push_back(ExtractTypeInfo(I.getOperand(j)));
+ TyInfo.push_back(ExtractTypeInfo(I.getArgOperand(j)));
MMI->addCatchTypeInfo(MBB, TyInfo);
TyInfo.clear();
}
@@ -240,7 +251,7 @@ void llvm::AddCatchInfo(const CallInst &I, MachineModuleInfo *MMI,
// Filter.
TyInfo.reserve(FilterLength - 1);
for (unsigned j = i + 1; j < FirstCatch; ++j)
- TyInfo.push_back(ExtractTypeInfo(I.getOperand(j)));
+ TyInfo.push_back(ExtractTypeInfo(I.getArgOperand(j)));
MMI->addFilterTypeInfo(MBB, TyInfo);
TyInfo.clear();
}
@@ -249,10 +260,10 @@ void llvm::AddCatchInfo(const CallInst &I, MachineModuleInfo *MMI,
}
}
- if (N > 3) {
- TyInfo.reserve(N - 3);
- for (unsigned j = 3; j < N; ++j)
- TyInfo.push_back(ExtractTypeInfo(I.getOperand(j)));
+ if (N > 2) {
+ TyInfo.reserve(N - 2);
+ for (unsigned j = 2; j < N; ++j)
+ TyInfo.push_back(ExtractTypeInfo(I.getArgOperand(j)));
MMI->addCatchTypeInfo(MBB, TyInfo);
}
}
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