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We should perform extra load for dllimported calls

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31874 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Anton Korobeynikov 2006-11-20 10:46:14 +00:00
parent 134693aed0
commit a59868519b
1 changed files with 26 additions and 12 deletions
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38
lib/Target/X86/X86ISelLowering.cpp
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@ -35,6 +35,8 @@
#include "llvm/ADT/StringExtras.h" #include "llvm/ADT/StringExtras.h"
using namespace llvm; using namespace llvm;
static bool WindowsGVRequiresExtraLoad(GlobalValue *GV);
// FIXME: temporary. // FIXME: temporary.
static cl::opt<bool> EnableFastCC("enable-x86-fastcc", cl::Hidden, static cl::opt<bool> EnableFastCC("enable-x86-fastcc", cl::Hidden,
cl::desc("Enable fastcc on X86")); cl::desc("Enable fastcc on X86"));
@ -651,9 +653,12 @@ SDOperand X86TargetLowering::LowerCCCCallTo(SDOperand Op, SelectionDAG &DAG) {
// If the callee is a GlobalAddress node (quite common, every direct call is) // If the callee is a GlobalAddress node (quite common, every direct call is)
// turn it into a TargetGlobalAddress node so that legalize doesn't hack it. // turn it into a TargetGlobalAddress node so that legalize doesn't hack it.
if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee)) if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee)) {
Callee = DAG.getTargetGlobalAddress(G->getGlobal(), getPointerTy()); // We should use extra load for direct calls to dllimported functions
else if (ExternalSymbolSDNode *S = dyn_cast<ExternalSymbolSDNode>(Callee)) if (!((Subtarget->isTargetCygwin() || Subtarget->isTargetWindows()) &&
WindowsGVRequiresExtraLoad(G->getGlobal())))
Callee = DAG.getTargetGlobalAddress(G->getGlobal(), getPointerTy());
} else if (ExternalSymbolSDNode *S = dyn_cast<ExternalSymbolSDNode>(Callee))
Callee = DAG.getTargetExternalSymbol(S->getSymbol(), getPointerTy()); Callee = DAG.getTargetExternalSymbol(S->getSymbol(), getPointerTy());
std::vector<MVT::ValueType> NodeTys; std::vector<MVT::ValueType> NodeTys;
@ -1186,9 +1191,12 @@ X86TargetLowering::LowerX86_64CCCCallTo(SDOperand Op, SelectionDAG &DAG) {
// If the callee is a GlobalAddress node (quite common, every direct call is) // If the callee is a GlobalAddress node (quite common, every direct call is)
// turn it into a TargetGlobalAddress node so that legalize doesn't hack it. // turn it into a TargetGlobalAddress node so that legalize doesn't hack it.
if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee)) if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee)) {
Callee = DAG.getTargetGlobalAddress(G->getGlobal(), getPointerTy()); // We should use extra load for direct calls to dllimported functions
else if (ExternalSymbolSDNode *S = dyn_cast<ExternalSymbolSDNode>(Callee)) if (!((Subtarget->isTargetCygwin() || Subtarget->isTargetWindows()) &&
WindowsGVRequiresExtraLoad(G->getGlobal())))
Callee = DAG.getTargetGlobalAddress(G->getGlobal(), getPointerTy());
} else if (ExternalSymbolSDNode *S = dyn_cast<ExternalSymbolSDNode>(Callee))
Callee = DAG.getTargetExternalSymbol(S->getSymbol(), getPointerTy()); Callee = DAG.getTargetExternalSymbol(S->getSymbol(), getPointerTy());
std::vector<MVT::ValueType> NodeTys; std::vector<MVT::ValueType> NodeTys;
@ -1681,9 +1689,12 @@ SDOperand X86TargetLowering::LowerFastCCCallTo(SDOperand Op, SelectionDAG &DAG,
// If the callee is a GlobalAddress node (quite common, every direct call is) // If the callee is a GlobalAddress node (quite common, every direct call is)
// turn it into a TargetGlobalAddress node so that legalize doesn't hack it. // turn it into a TargetGlobalAddress node so that legalize doesn't hack it.
if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee)) if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee)) {
Callee = DAG.getTargetGlobalAddress(G->getGlobal(), getPointerTy()); // We should use extra load for direct calls to dllimported functions
else if (ExternalSymbolSDNode *S = dyn_cast<ExternalSymbolSDNode>(Callee)) if (!((Subtarget->isTargetCygwin() || Subtarget->isTargetWindows()) &&
WindowsGVRequiresExtraLoad(G->getGlobal())))
Callee = DAG.getTargetGlobalAddress(G->getGlobal(), getPointerTy());
} else if (ExternalSymbolSDNode *S = dyn_cast<ExternalSymbolSDNode>(Callee))
Callee = DAG.getTargetExternalSymbol(S->getSymbol(), getPointerTy()); Callee = DAG.getTargetExternalSymbol(S->getSymbol(), getPointerTy());
std::vector<MVT::ValueType> NodeTys; std::vector<MVT::ValueType> NodeTys;
@ -1977,9 +1988,12 @@ SDOperand X86TargetLowering::LowerStdCallCCCallTo(SDOperand Op,
// If the callee is a GlobalAddress node (quite common, every direct call is) // If the callee is a GlobalAddress node (quite common, every direct call is)
// turn it into a TargetGlobalAddress node so that legalize doesn't hack it. // turn it into a TargetGlobalAddress node so that legalize doesn't hack it.
if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee)) if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee)) {
Callee = DAG.getTargetGlobalAddress(G->getGlobal(), getPointerTy()); // We should use extra load for direct calls to dllimported functions
else if (ExternalSymbolSDNode *S = dyn_cast<ExternalSymbolSDNode>(Callee)) if (!((Subtarget->isTargetCygwin() || Subtarget->isTargetWindows()) &&
WindowsGVRequiresExtraLoad(G->getGlobal())))
Callee = DAG.getTargetGlobalAddress(G->getGlobal(), getPointerTy());
} else if (ExternalSymbolSDNode *S = dyn_cast<ExternalSymbolSDNode>(Callee))
Callee = DAG.getTargetExternalSymbol(S->getSymbol(), getPointerTy()); Callee = DAG.getTargetExternalSymbol(S->getSymbol(), getPointerTy());
std::vector<MVT::ValueType> NodeTys; std::vector<MVT::ValueType> NodeTys;