E = mri_->use_end(); I != E; ++I) {
MachineOperand &Use = I.getOperand();
MachineInstr *UseMI = Use.getParent();
+ unsigned SrcReg, DstReg;
+ if (tii_->isMoveInstr(*UseMI, SrcReg, DstReg) && SrcReg == DstReg)
+ // Ignore identity copies.
+ continue;
unsigned Idx = li_->getInstructionIndex(UseMI);
if (Idx >= Start && Idx < End && Idx >= UseIdx) {
LastUse = &Use;
if (e < s || MI == NULL)
return NULL;
- for (unsigned i = 0, NumOps = MI->getNumOperands(); i != NumOps; ++i) {
- MachineOperand &Use = MI->getOperand(i);
- if (Use.isRegister() && Use.isUse() && Use.getReg() &&
- tri_->regsOverlap(Use.getReg(), Reg)) {
- UseIdx = e;
- return &Use;
+ // Ignore identity copies.
+ unsigned SrcReg, DstReg;
+ if (!(tii_->isMoveInstr(*MI, SrcReg, DstReg) && SrcReg == DstReg))
+ for (unsigned i = 0, NumOps = MI->getNumOperands(); i != NumOps; ++i) {
+ MachineOperand &Use = MI->getOperand(i);
+ if (Use.isRegister() && Use.isUse() && Use.getReg() &&
+ tri_->regsOverlap(Use.getReg(), Reg)) {
+ UseIdx = e;
+ return &Use;
+ }
}
- }
e -= InstrSlots::NUM;
}
--- /dev/null
+; RUN: llvm-as < %s | llc -march=ppc32
+
+ %struct..0objc_object = type { %struct.objc_class* }
+ %struct.NSArray = type { %struct..0objc_object }
+ %struct.NSMutableArray = type { %struct.NSArray }
+ %struct.PFTPersistentSymbols = type { %struct..0objc_object, %struct.VMUSymbolicator*, %struct.NSMutableArray*, %struct.__CFDictionary*, %struct.__CFDictionary*, %struct.__CFDictionary*, %struct.__CFDictionary*, %struct.NSMutableArray*, i8, %struct.pthread_mutex_t, %struct.NSMutableArray*, %struct.pthread_rwlock_t }
+ %struct.VMUMachTaskContainer = type { %struct..0objc_object, i32, i32 }
+ %struct.VMUSymbolicator = type { %struct..0objc_object, %struct.NSMutableArray*, %struct.NSArray*, %struct.NSArray*, %struct.VMUMachTaskContainer*, i8 }
+ %struct.__CFDictionary = type opaque
+ %struct.__builtin_CFString = type { i32*, i32, i8*, i32 }
+ %struct.objc_class = type opaque
+ %struct.objc_selector = type opaque
+ %struct.pthread_mutex_t = type { i32, [40 x i8] }
+ %struct.pthread_rwlock_t = type { i32, [124 x i8] }
+external constant %struct.__builtin_CFString ; <%struct.__builtin_CFString*>:0 [#uses=1]
+
+define void @"-[PFTPersistentSymbols saveSymbolWithName:address:path:lineNumber:flags:owner:]"(%struct.PFTPersistentSymbols* %self, %struct.objc_selector* %_cmd, %struct.NSArray* %name, i64 %address, %struct.NSArray* %path, i32 %lineNumber, i64 %flags, %struct..0objc_object* %owner) nounwind {
+entry:
+ br i1 false, label %bb12, label %bb21
+bb12: ; preds = %entry
+ %tmp17 = tail call i8 inttoptr (i64 4294901504 to i8 (%struct..0objc_object*, %struct.objc_selector*, %struct.NSArray*)*)( %struct..0objc_object* null, %struct.objc_selector* null, %struct.NSArray* bitcast (%struct.__builtin_CFString* @0 to %struct.NSArray*) ) signext nounwind ; <i8> [#uses=0]
+ br i1 false, label %bb25, label %bb21
+bb21: ; preds = %bb12, %entry
+ %tmp24 = or i64 %flags, 4 ; <i64> [#uses=1]
+ br label %bb25
+bb25: ; preds = %bb21, %bb12
+ %flags_addr.0 = phi i64 [ %tmp24, %bb21 ], [ %flags, %bb12 ] ; <i64> [#uses=1]
+ %tmp3233 = trunc i64 %flags_addr.0 to i32 ; <i32> [#uses=0]
+ ret void
+}