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Add support for ARM ldrexd/strexd builtins 

llvm-svn: 132249
This commit is contained in:
Bruno Cardoso Lopes 2011-05-28 04:11:33 +00:00
parent 325110f30d
commit fe73374d7a
2 changed files with 39 additions and 0 deletions
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4
clang/include/clang/Basic/BuiltinsARM.def
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@ -24,6 +24,10 @@ BUILTIN(__builtin_arm_qsub, "iii", "nc")
BUILTIN(__builtin_arm_ssat, "iiUi", "nc") BUILTIN(__builtin_arm_ssat, "iiUi", "nc")
BUILTIN(__builtin_arm_usat, "UiUiUi", "nc") BUILTIN(__builtin_arm_usat, "UiUiUi", "nc")
// Store and load exclusive doubleword
BUILTIN(__builtin_arm_ldrexd, "LLUiv*", "")
BUILTIN(__builtin_arm_strexd, "iLLUiv*", "")
// VFP // VFP
BUILTIN(__builtin_arm_get_fpscr, "Ui", "nc") BUILTIN(__builtin_arm_get_fpscr, "Ui", "nc")
BUILTIN(__builtin_arm_set_fpscr, "vUi", "nc") BUILTIN(__builtin_arm_set_fpscr, "vUi", "nc")

35
clang/lib/CodeGen/CGBuiltin.cpp
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@ -1186,6 +1186,41 @@ Value *CodeGenFunction::EmitARMBuiltinExpr(unsigned BuiltinID,
Ops.begin(), Ops.end()); Ops.begin(), Ops.end());
} }
if (BuiltinID == ARM::BI__builtin_arm_ldrexd) {
Function *F = CGM.getIntrinsic(Intrinsic::arm_ldrexd);
Value *LdPtr = EmitScalarExpr(E->getArg(0));
Value *Val = Builder.CreateCall(F, LdPtr, "ldrexd");
Value *Val0 = Builder.CreateExtractValue(Val, 1);
Value *Val1 = Builder.CreateExtractValue(Val, 0);
Val0 = Builder.CreateZExt(Val0, Int64Ty);
Val1 = Builder.CreateZExt(Val1, Int64Ty);
Value *ShiftCst = llvm::ConstantInt::get(Int64Ty, 32);
Val = Builder.CreateShl(Val0, ShiftCst, "shl", true /* nuw */);
return Builder.CreateOr(Val, Val1);
}
if (BuiltinID == ARM::BI__builtin_arm_strexd) {
Function *F = CGM.getIntrinsic(Intrinsic::arm_strexd);
llvm::Type *STy = llvm::StructType::get(getLLVMContext(), Int32Ty, Int32Ty,
NULL);
Value *One = llvm::ConstantInt::get(Int32Ty, 1);
Value *Tmp = Builder.CreateAlloca(Int64Ty, One, "tmp");
Value *Val = EmitScalarExpr(E->getArg(0));
Builder.CreateStore(Val, Tmp);
Value *LdPtr = Builder.CreateBitCast(Tmp,llvm::PointerType::getUnqual(STy));
Val = Builder.CreateLoad(LdPtr);
Value *Arg0 = Builder.CreateExtractValue(Val, 0);
Value *Arg1 = Builder.CreateExtractValue(Val, 1);
Value *StPtr = EmitScalarExpr(E->getArg(1));
return Builder.CreateCall3(F, Arg0, Arg1, StPtr, "strexd");
}
llvm::SmallVector<Value*, 4> Ops; llvm::SmallVector<Value*, 4> Ops;
for (unsigned i = 0, e = E->getNumArgs() - 1; i != e; i++) for (unsigned i = 0, e = E->getNumArgs() - 1; i != e; i++)
Ops.push_back(EmitScalarExpr(E->getArg(i))); Ops.push_back(EmitScalarExpr(E->getArg(i)));