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

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llvm-svn: 1005
This commit is contained in:
Vikram S. Adve 2001-10-28 21:39:47 +00:00
parent b354629285
commit 165284e269
1 changed files with 6 additions and 3 deletions
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9
lib/Target/Sparc/SparcInstrSelection.cpp
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@ -1011,7 +1011,7 @@ GetInstructionsForProlog(BasicBlock* entryBB,
mvec[0] = new MachineInstr(SAVE);
mvec[0]->SetMachineOperand(0, target.getRegInfo().getStackPointer());
mvec[0]->SetMachineOperand(1, MachineOperand::MO_SignExtendedImmed,
staticStackSize);
- staticStackSize);
mvec[0]->SetMachineOperand(2, target.getRegInfo().getStackPointer());
return 1;
@ -1519,8 +1519,11 @@ GetInstructionsByRule(InstructionNode* subtreeRoot,
case 42: // bool: SetCC(reg, reg):
{
// If result of the SetCC is only used for a single branch, we can
// discard the result. Otherwise, the boolean value must go into
// an integer register.
// discard the boolean result and keep only the condition code.
// 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 ||
((InstructionNode*) subtreeRoot->parent())