Imported Upstream version 5.18.0.207

Former-commit-id: 3b152f462918d427ce18620a2cbe4f8b79650449

external/llvm/test/Transforms/ObjCARC/empty-block.ll

@@ -1,59 +0,0 @@
-; RUN: opt -S -objc-arc < %s | FileCheck %s
-; rdar://10210274
-
-%0 = type opaque
-
-declare i8* @objc_retain(i8*)
-
-declare void @objc_release(i8*)
-
-declare i8* @objc_autoreleaseReturnValue(i8*)
-
-; Don't delete the autorelease.
-
-; CHECK-LABEL: define %0* @test0(
-; CHECK:   @objc_retain
-; CHECK: .lr.ph:
-; CHECK-NOT: @objc_r
-; CHECK: @objc_autoreleaseReturnValue
-; CHECK-NOT: @objc_
-; CHECK: }
-define %0* @test0(%0* %buffer) nounwind {
-  %1 = bitcast %0* %buffer to i8*
-  %2 = tail call i8* @objc_retain(i8* %1) nounwind
-  br i1 undef, label %.lr.ph, label %._crit_edge
-
-.lr.ph:                                           ; preds = %.lr.ph, %0
-  br i1 false, label %.lr.ph, label %._crit_edge
-
-._crit_edge:                                      ; preds = %.lr.ph, %0
-  %3 = tail call i8* @objc_retain(i8* %1) nounwind
-  tail call void @objc_release(i8* %1) nounwind, !clang.imprecise_release !0
-  %4 = tail call i8* @objc_autoreleaseReturnValue(i8* %1) nounwind
-  ret %0* %buffer
-}
-
-; Do delete the autorelease, even with the retain in a different block.
-
-; CHECK-LABEL: define %0* @test1(
-; CHECK-NOT: @objc
-; CHECK: }
-define %0* @test1() nounwind {
-  %buffer = call %0* @foo()
-  %1 = bitcast %0* %buffer to i8*
-  %2 = tail call i8* @objc_retain(i8* %1) nounwind
-  br i1 undef, label %.lr.ph, label %._crit_edge
-
-.lr.ph:                                           ; preds = %.lr.ph, %0
-  br i1 false, label %.lr.ph, label %._crit_edge
-
-._crit_edge:                                      ; preds = %.lr.ph, %0
-  %3 = tail call i8* @objc_retain(i8* %1) nounwind
-  tail call void @objc_release(i8* %1) nounwind, !clang.imprecise_release !0
-  %4 = tail call i8* @objc_autoreleaseReturnValue(i8* %1) nounwind
-  ret %0* %buffer
-}
-
-declare %0* @foo()
-
-!0 = !{}