SmallVector<CallInst*, 4> TailCalls;
if (PN) {
for (unsigned I = 0, E = PN->getNumIncomingValues(); I != E; ++I) {
- CallInst *CI = dyn_cast<CallInst>(PN->getIncomingValue(I));
+ // Look through bitcasts.
+ Value *IncomingVal = PN->getIncomingValue(I)->stripPointerCasts();
+ CallInst *CI = dyn_cast<CallInst>(IncomingVal);
// Make sure the phi value is indeed produced by the tail call.
if (CI && CI->hasOneUse() && CI->getParent() == PN->getIncomingBlock(I) &&
TLI->mayBeEmittedAsTailCall(CI) &&
; OPT: if.then:
; OPT-NEXT: [[PTR:%.*]] = tail call i32* @g_ret32()
; OPT-NEXT: [[CASTED:%.*]] = bitcast i32* [[PTR]] to i8*
-; OPT-NEXT: br label [[RETURN]]
+; OPT-NEXT: ret i8* [[CASTED]]
; OPT: return:
-; OPT-NEXT: [[RETVAL:%.*]] = phi i8* [ [[CASTED]], [[IF_THEN]] ], [ [[OBJ]], [[ENTRY:%.*]] ]
-; OPT-NEXT: ret i8* [[RETVAL]]
+; OPT-NEXT: ret i8* [[OBJ]]
;
; CHECK-LABEL: f_ret8:
; CHECK: ## %bb.0: ## %entry
-; CHECK-NEXT: movq %rdi, %rax
; CHECK-NEXT: testq %rdi, %rdi
-; CHECK-NEXT: je LBB3_2
-; CHECK-NEXT: ## %bb.1: ## %if.then
-; CHECK-NEXT: pushq %rax
-; CHECK-NEXT: callq _g_ret32
-; CHECK-NEXT: addq $8, %rsp
-; CHECK-NEXT: LBB3_2: ## %return
+; CHECK-NEXT: je LBB3_1
+; CHECK-NEXT: ## %bb.2: ## %if.then
+; CHECK-NEXT: jmp _g_ret32 ## TAILCALL
+; CHECK-NEXT: LBB3_1: ## %return
+; CHECK-NEXT: movq %rdi, %rax
; CHECK-NEXT: retq
entry:
%cmp = icmp eq i8* %obj, null