6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-07-26 20:26:07 +00:00
Code Issues Projects Releases Wiki Activity

Resubmit the changes to llvm core to update the functions to support different pointer sizes on a per address space basis.

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165941 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Micah Villmow
2012-10-15 16:24:29 +00:00
parent f35c62bf02
commit 2c39b15073
40 changed files with 190 additions and 109 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
lib/Analysis/ConstantFolding.cpp
View File

@@ -916,10 +916,11 @@ Constant *llvm::ConstantFoldInstOperands(unsigned Opcode, Type *DestTy,
if (TD && CE->getOpcode() == Instruction::IntToPtr) {
Constant *Input = CE->getOperand(0);
unsigned InWidth = Input->getType()->getScalarSizeInBits();
if (TD->getPointerSizeInBits() < InWidth) {
unsigned AS = cast<PointerType>(CE->getType())->getAddressSpace();
if (TD->getPointerSizeInBits(AS) < InWidth) {
Constant *Mask =
ConstantInt::get(CE->getContext(), APInt::getLowBitsSet(InWidth,
TD->getPointerSizeInBits()));
TD->getPointerSizeInBits(AS)));
Input = ConstantExpr::getAnd(Input, Mask);
}
// Do a zext or trunc to get to the dest size.
@@ -932,9 +933,10 @@ Constant *llvm::ConstantFoldInstOperands(unsigned Opcode, Type *DestTy,
// the int size is >= the ptr size. This requires knowing the width of a
// pointer, so it can't be done in ConstantExpr::getCast.
if (ConstantExpr *CE = dyn_cast<ConstantExpr>(Ops[0]))
if (TD &&
TD->getPointerSizeInBits() <= CE->getType()->getScalarSizeInBits() &&
CE->getOpcode() == Instruction::PtrToInt)
if (TD && CE->getOpcode() == Instruction::PtrToInt &&
TD->getPointerSizeInBits(
cast<PointerType>(CE->getOperand(0)->getType())->getAddressSpace())
<= CE->getType()->getScalarSizeInBits())
return FoldBitCast(CE->getOperand(0), DestTy, *TD);
return ConstantExpr::getCast(Opcode, Ops[0], DestTy);