Imported Upstream version 5.18.0.246

Former-commit-id: 0c7ce5b1a7851e13f22acfd379b7f9fb304e4833

external/llvm/test/Transforms/Inline/crash-lifetime-marker.ll

@@ -0,0 +1,25 @@
+; RUN: opt < %s -inline -S | FileCheck %s
+; RUN: opt < %s -passes='cgscc(inline)' -S | FileCheck %s
+
+; InlineFunction would assert inside the loop that leaves lifetime markers if
+; there was an zero-sized AllocaInst. Check that it doesn't assert and doesn't
+; leave lifetime markers in that case.
+
+declare i32 @callee2(i8*)
+
+define i32 @callee1(i32 %count) {
+  %a0 = alloca i8, i32 %count, align 4
+  %call0 = call i32 @callee2(i8* %a0)
+  ret i32 %call0
+}
+
+; CHECK-LABEL: define i32 @caller1(
+; CHECK: [[ALLOCA:%[a-z0-9\.]+]] = alloca i8
+; CHECK-NOT: call void @llvm.lifetime.start.p0i8(
+; CHECK: call i32 @callee2(i8* [[ALLOCA]])
+; CHECK-NOT: call void @llvm.lifetime.end.p0i8(
+
+define i32 @caller1(i32 %count) {
+  %call0 = call i32 @callee1(i32 0)
+  ret i32 %call0
+}