Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

external/llvm/test/Transforms/PlaceSafepoints/basic.ll

@@ -1,77 +0,0 @@
-; RUN: opt < %s -S -place-safepoints | FileCheck %s
-
-
-; Do we insert a simple entry safepoint?
-define void @test_entry() gc "statepoint-example" {
-; CHECK-LABEL: @test_entry
-entry:
-; CHECK-LABEL: entry
-; CHECK: call void @do_safepoint
-  ret void
-}
-
-; On a non-gc function, we should NOT get an entry safepoint
-define void @test_negative() {
-; CHECK-LABEL: @test_negative
-entry:
-; CHECK-NOT: do_safepoint
-  ret void
-}
-
-; Do we insert a backedge safepoint in a statically
-; infinite loop?
-define void @test_backedge() gc "statepoint-example" {
-; CHECK-LABEL: test_backedge
-entry:
-; CHECK-LABEL: entry
-; This statepoint is technically not required, but we don't exploit that yet.
-; CHECK: call void @do_safepoint
-  br label %other
-
-; CHECK-LABEL: other
-; CHECK: call void @do_safepoint
-other:
-  br label %other
-}
-
-; Check that we remove an unreachable block rather than trying
-; to insert a backedge safepoint
-define void @test_unreachable() gc "statepoint-example" {
-; CHECK-LABEL: test_unreachable
-entry:
-; CHECK-LABEL: entry
-; CHECK: call void @do_safepoint
-  ret void
-
-; CHECK-NOT: other
-; CHECK-NOT: do_safepoint
-other:
-  br label %other
-}
-
-declare void @foo()
-
-declare zeroext i1 @i1_return_i1(i1)
-
-define i1 @test_call_with_result() gc "statepoint-example" {
-; CHECK-LABEL: test_call_with_result
-; This is checking that a statepoint_poll is inserted for a function
-; that takes 1 argument.
-; CHECK: call void @do_safepoint
-entry:
-  %call1 = tail call i1 (i1) @i1_return_i1(i1 false)
-  ret i1 %call1
-}
-
-; This function is inlined when inserting a poll.  To avoid recursive 
-; issues, make sure we don't place safepoints in it.
-declare void @do_safepoint()
-define void @gc.safepoint_poll() {
-; CHECK-LABEL: gc.safepoint_poll
-; CHECK-LABEL: entry
-; CHECK-NEXT: do_safepoint
-; CHECK-NEXT: ret void 
-entry:
-  call void @do_safepoint()
-  ret void
-}