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Need to subtract, not add, stack size in SAVE instruction!

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1005 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Vikram S. Adve
2001-10-28 21:39:47 +00:00
parent 953c83e1ee
commit 0589b2c63f
1 changed files with 6 additions and 3 deletions
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9
lib/Target/SparcV9/SparcV9InstrSelection.cpp
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@@ -1011,7 +1011,7 @@ GetInstructionsForProlog(BasicBlock* entryBB,
mvec[0] = new MachineInstr(SAVE); mvec[0] = new MachineInstr(SAVE);
mvec[0]->SetMachineOperand(0, target.getRegInfo().getStackPointer()); mvec[0]->SetMachineOperand(0, target.getRegInfo().getStackPointer());
mvec[0]->SetMachineOperand(1, MachineOperand::MO_SignExtendedImmed, mvec[0]->SetMachineOperand(1, MachineOperand::MO_SignExtendedImmed,
staticStackSize); - staticStackSize);
mvec[0]->SetMachineOperand(2, target.getRegInfo().getStackPointer()); mvec[0]->SetMachineOperand(2, target.getRegInfo().getStackPointer());
return 1; return 1;
@@ -1519,8 +1519,11 @@ GetInstructionsByRule(InstructionNode* subtreeRoot,
case 42: // bool: SetCC(reg, reg): case 42: // bool: SetCC(reg, reg):
{ {
// If result of the SetCC is only used for a single branch, we can // If result of the SetCC is only used for a single branch, we can
// discard the result. Otherwise, the boolean value must go into // discard the boolean result and keep only the condition code.
// an integer register. // Otherwise, the boolean value must go into an integer register.
// To put the boolean result in a register we use a conditional move,
// unless the result of the SUBCC instruction can be used as the bool!
// This assumes that zero is FALSE and any non-zero integer is TRUE.
// //
bool keepBoolVal = (subtreeRoot->parent() == NULL || bool keepBoolVal = (subtreeRoot->parent() == NULL ||
((InstructionNode*) subtreeRoot->parent()) ((InstructionNode*) subtreeRoot->parent())