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Implicit defs/uses list may be empty.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5103 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2002-12-18 01:11:14 +00:00
parent b339223518
commit aed967cc9e
1 changed files with 6 additions and 6 deletions

12
lib/CodeGen/RegAllocSimple.cpp

@ -92,13 +92,13 @@ namespace {
void invalidatePhysRegs(const MachineInstr *MI) {
unsigned Opcode = MI->getOpcode();
const MachineInstrDescriptor &Desc = TM.getInstrInfo().get(Opcode);
const unsigned *regs = Desc.ImplicitUses;
while (*regs)
RegsUsed.insert(*regs++);
if (const unsigned *regs = Desc.ImplicitUses)
while (*regs)
RegsUsed.insert(*regs++);
regs = Desc.ImplicitDefs;
while (*regs)
RegsUsed.insert(*regs++);
if (const unsigned *regs = Desc.ImplicitDefs)
while (*regs)
RegsUsed.insert(*regs++);
}
void cleanupAfterFunction() {