Fix http://llvm.org/bugs/show_bug.cgi?id=4583
Inline asm instructions may have additional <imp-def,kill> register operands.
These operands are not marked with a flag like the normal asm operands, so we
must not assert that there is a flag.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76373 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/MachineInstr.cpp b/lib/CodeGen/MachineInstr.cpp
index c6f3e31..8deaa1a 100644
--- a/lib/CodeGen/MachineInstr.cpp
+++ b/lib/CodeGen/MachineInstr.cpp
@@ -732,7 +732,9 @@
unsigned DefPart = 0;
for (unsigned i = 1, e = getNumOperands(); i < e; ) {
const MachineOperand &FMO = getOperand(i);
- assert(FMO.isImm());
+ // After the normal asm operands there may be additional imp-def regs.
+ if (!FMO.isImm())
+ return false;
// Skip over this def.
unsigned NumOps = InlineAsm::getNumOperandRegisters(FMO.getImm());
unsigned PrevDef = i + 1;
@@ -788,7 +790,9 @@
unsigned FlagIdx, NumOps=0;
for (FlagIdx = 1; FlagIdx < UseOpIdx; FlagIdx += NumOps+1) {
const MachineOperand &UFMO = getOperand(FlagIdx);
- assert(UFMO.isImm() && "Expecting flag operand on inline asm");
+ // After the normal asm operands there may be additional imp-def regs.
+ if (!UFMO.isImm())
+ return false;
NumOps = InlineAsm::getNumOperandRegisters(UFMO.getImm());
assert(NumOps < getNumOperands() && "Invalid inline asm flag");
if (UseOpIdx < FlagIdx+NumOps+1)