const MachineOperand &MO = getOperand(DefOpIdx);
if (!MO.isReg() || !MO.isDef() || MO.getReg() == 0)
return false;
- // Determine the actual operand no corresponding to this index.
+ // Determine the actual operand index that corresponds to this index.
unsigned DefNo = 0;
+ unsigned DefPart = 0;
for (unsigned i = 1, e = getNumOperands(); i < e; ) {
const MachineOperand &FMO = getOperand(i);
assert(FMO.isImm());
// Skip over this def.
- i += InlineAsm::getNumOperandRegisters(FMO.getImm()) + 1;
- if (i > DefOpIdx)
+ unsigned NumOps = InlineAsm::getNumOperandRegisters(FMO.getImm());
+ unsigned PrevDef = i + 1;
+ i = PrevDef + NumOps;
+ if (i > DefOpIdx) {
+ DefPart = DefOpIdx - PrevDef;
break;
+ }
++DefNo;
}
- for (unsigned i = 0, e = getNumOperands(); i != e; ++i) {
+ for (unsigned i = 1, e = getNumOperands(); i != e; ++i) {
const MachineOperand &FMO = getOperand(i);
if (!FMO.isImm())
continue;
if (i+1 >= e || !getOperand(i+1).isReg() || !getOperand(i+1).isUse())
continue;
unsigned Idx;
- if (InlineAsm::isUseOperandTiedToDef(FMO.getImm(), Idx) &&
+ if (InlineAsm::isUseOperandTiedToDef(FMO.getImm(), Idx) &&
Idx == DefNo) {
if (UseOpIdx)
- *UseOpIdx = (unsigned)i + 1;
+ *UseOpIdx = (unsigned)i + 1 + DefPart;
return true;
}
}
+ return false;
}
assert(getOperand(DefOpIdx).isDef() && "DefOpIdx is not a def!");
const MachineOperand &MO = getOperand(UseOpIdx);
if (!MO.isReg() || !MO.isUse() || MO.getReg() == 0)
return false;
- assert(UseOpIdx > 0);
- const MachineOperand &UFMO = getOperand(UseOpIdx-1);
- if (!UFMO.isImm())
- return false; // Must be physreg uses.
+ int FlagIdx = UseOpIdx - 1;
+ if (FlagIdx < 1)
+ return false;
+ while (!getOperand(FlagIdx).isImm()) {
+ if (--FlagIdx == 0)
+ return false;
+ }
+ const MachineOperand &UFMO = getOperand(FlagIdx);
+ if (FlagIdx + InlineAsm::getNumOperandRegisters(UFMO.getImm()) < UseOpIdx)
+ return false;
unsigned DefNo;
if (InlineAsm::isUseOperandTiedToDef(UFMO.getImm(), DefNo)) {
if (!DefOpIdx)
DefIdx += InlineAsm::getNumOperandRegisters(FMO.getImm()) + 1;
--DefNo;
}
- *DefOpIdx = DefIdx+1;
+ *DefOpIdx = DefIdx + UseOpIdx - FlagIdx;
return true;
}
return false;
--- /dev/null
+; RUN: llvm-as < %s | llc -mtriple=i386-apple-darwin9 -O0 | grep {movl %edx, 4(%esp)} | count 2
+; rdar://6992609
+
+target triple = "i386-apple-darwin9.0"
+@llvm.used = appending global [1 x i8*] [i8* bitcast (i64 (i64)* @_OSSwapInt64 to i8*)], section "llvm.metadata" ; <[1 x i8*]*> [#uses=0]
+
+define i64 @_OSSwapInt64(i64 %_data) nounwind {
+entry:
+ %retval = alloca i64 ; <i64*> [#uses=2]
+ %_data.addr = alloca i64 ; <i64*> [#uses=4]
+ store i64 %_data, i64* %_data.addr
+ %tmp = load i64* %_data.addr ; <i64> [#uses=1]
+ %0 = call i64 asm "bswap %eax\0A\09bswap %edx\0A\09xchgl %eax, %edx", "=A,0,~{dirflag},~{fpsr},~{flags}"(i64 %tmp) nounwind ; <i64> [#uses=1]
+ store i64 %0, i64* %_data.addr
+ %tmp1 = load i64* %_data.addr ; <i64> [#uses=1]
+ store i64 %tmp1, i64* %retval
+ %1 = load i64* %retval ; <i64> [#uses=1]
+ ret i64 %1
+}