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Make visitAllocaInst() look more like its X86 counterpart.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14229 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Brian Gaeke 2004-06-18 08:45:52 +00:00
parent 4f217fdd10
commit cfaf22445c
4 changed files with 44 additions and 12 deletions
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14
lib/Target/Sparc/InstSelectSimple.cpp
View File

@ -905,16 +905,24 @@ void V8ISel::visitAllocaInst(AllocaInst &I) {
unsigned TmpReg1 = makeAnotherReg (Type::UIntTy);
unsigned TmpReg2 = makeAnotherReg (Type::UIntTy);
unsigned StackAdjReg = makeAnotherReg (Type::UIntTy);
unsigned DestReg = getReg (I);
// StackAdjReg = (ArraySize * TySize) rounded up to nearest doubleword boundary
BuildMI (BB, V8::UMULrr, 2, TmpReg1).addReg (ArraySizeReg).addReg (TySizeReg);
// Round up TmpReg1 to nearest doubleword boundary:
BuildMI (BB, V8::ADDri, 2, TmpReg2).addReg (TmpReg1).addSImm (7);
BuildMI (BB, V8::ANDri, 2, StackAdjReg).addReg (TmpReg2).addSImm (-8);
// Adjust stack, push pointer past trap frame space, put result in DestReg
// Subtract size from stack pointer, thereby allocating some space.
BuildMI (BB, V8::SUBrr, 2, V8::SP).addReg (V8::SP).addReg (StackAdjReg);
BuildMI (BB, V8::ADDri, 2, DestReg).addReg (V8::SP).addSImm (96);
// Put a pointer to the space into the result register, by copying
// the stack pointer.
BuildMI (BB, V8::ADDri, 2, getReg(I)).addReg (V8::SP).addSImm (96);
// Inform the Frame Information that we have just allocated a variable-sized
// object.
F->getFrameInfo()->CreateVariableSizedObject();
}
/// LowerUnknownIntrinsicFunctionCalls - This performs a prepass over the

14
lib/Target/Sparc/SparcV8ISelSimple.cpp
View File

@ -905,16 +905,24 @@ void V8ISel::visitAllocaInst(AllocaInst &I) {
unsigned TmpReg1 = makeAnotherReg (Type::UIntTy);
unsigned TmpReg2 = makeAnotherReg (Type::UIntTy);
unsigned StackAdjReg = makeAnotherReg (Type::UIntTy);
unsigned DestReg = getReg (I);
// StackAdjReg = (ArraySize * TySize) rounded up to nearest doubleword boundary
BuildMI (BB, V8::UMULrr, 2, TmpReg1).addReg (ArraySizeReg).addReg (TySizeReg);
// Round up TmpReg1 to nearest doubleword boundary:
BuildMI (BB, V8::ADDri, 2, TmpReg2).addReg (TmpReg1).addSImm (7);
BuildMI (BB, V8::ANDri, 2, StackAdjReg).addReg (TmpReg2).addSImm (-8);
// Adjust stack, push pointer past trap frame space, put result in DestReg
// Subtract size from stack pointer, thereby allocating some space.
BuildMI (BB, V8::SUBrr, 2, V8::SP).addReg (V8::SP).addReg (StackAdjReg);
BuildMI (BB, V8::ADDri, 2, DestReg).addReg (V8::SP).addSImm (96);
// Put a pointer to the space into the result register, by copying
// the stack pointer.
BuildMI (BB, V8::ADDri, 2, getReg(I)).addReg (V8::SP).addSImm (96);
// Inform the Frame Information that we have just allocated a variable-sized
// object.
F->getFrameInfo()->CreateVariableSizedObject();
}
/// LowerUnknownIntrinsicFunctionCalls - This performs a prepass over the

14
lib/Target/SparcV8/InstSelectSimple.cpp
View File

@ -905,16 +905,24 @@ void V8ISel::visitAllocaInst(AllocaInst &I) {
unsigned TmpReg1 = makeAnotherReg (Type::UIntTy);
unsigned TmpReg2 = makeAnotherReg (Type::UIntTy);
unsigned StackAdjReg = makeAnotherReg (Type::UIntTy);
unsigned DestReg = getReg (I);
// StackAdjReg = (ArraySize * TySize) rounded up to nearest doubleword boundary
BuildMI (BB, V8::UMULrr, 2, TmpReg1).addReg (ArraySizeReg).addReg (TySizeReg);
// Round up TmpReg1 to nearest doubleword boundary:
BuildMI (BB, V8::ADDri, 2, TmpReg2).addReg (TmpReg1).addSImm (7);
BuildMI (BB, V8::ANDri, 2, StackAdjReg).addReg (TmpReg2).addSImm (-8);
// Adjust stack, push pointer past trap frame space, put result in DestReg
// Subtract size from stack pointer, thereby allocating some space.
BuildMI (BB, V8::SUBrr, 2, V8::SP).addReg (V8::SP).addReg (StackAdjReg);
BuildMI (BB, V8::ADDri, 2, DestReg).addReg (V8::SP).addSImm (96);
// Put a pointer to the space into the result register, by copying
// the stack pointer.
BuildMI (BB, V8::ADDri, 2, getReg(I)).addReg (V8::SP).addSImm (96);
// Inform the Frame Information that we have just allocated a variable-sized
// object.
F->getFrameInfo()->CreateVariableSizedObject();
}
/// LowerUnknownIntrinsicFunctionCalls - This performs a prepass over the

14
lib/Target/SparcV8/SparcV8ISelSimple.cpp
View File

@ -905,16 +905,24 @@ void V8ISel::visitAllocaInst(AllocaInst &I) {
unsigned TmpReg1 = makeAnotherReg (Type::UIntTy);
unsigned TmpReg2 = makeAnotherReg (Type::UIntTy);
unsigned StackAdjReg = makeAnotherReg (Type::UIntTy);
unsigned DestReg = getReg (I);
// StackAdjReg = (ArraySize * TySize) rounded up to nearest doubleword boundary
BuildMI (BB, V8::UMULrr, 2, TmpReg1).addReg (ArraySizeReg).addReg (TySizeReg);
// Round up TmpReg1 to nearest doubleword boundary:
BuildMI (BB, V8::ADDri, 2, TmpReg2).addReg (TmpReg1).addSImm (7);
BuildMI (BB, V8::ANDri, 2, StackAdjReg).addReg (TmpReg2).addSImm (-8);
// Adjust stack, push pointer past trap frame space, put result in DestReg
// Subtract size from stack pointer, thereby allocating some space.
BuildMI (BB, V8::SUBrr, 2, V8::SP).addReg (V8::SP).addReg (StackAdjReg);
BuildMI (BB, V8::ADDri, 2, DestReg).addReg (V8::SP).addSImm (96);
// Put a pointer to the space into the result register, by copying
// the stack pointer.
BuildMI (BB, V8::ADDri, 2, getReg(I)).addReg (V8::SP).addSImm (96);
// Inform the Frame Information that we have just allocated a variable-sized
// object.
F->getFrameInfo()->CreateVariableSizedObject();
}
/// LowerUnknownIntrinsicFunctionCalls - This performs a prepass over the