Imported Upstream version 5.18.0.234

Former-commit-id: 8071ec1a8c5eaa9be24b41745add19297608001f

external/llvm/test/Transforms/PlaceSafepoints/split-backedge.ll

@@ -1,46 +0,0 @@
-;; A very basic test to make sure that splitting the backedge keeps working
-;; RUN: opt < %s -place-safepoints -spp-split-backedge=1 -S | FileCheck %s
-
-define void @test(i32, i1 %cond) gc "statepoint-example" {
-; CHECK-LABEL: @test
-; CHECK-LABEL: loop.loop_crit_edge
-; CHECK: call void @do_safepoint
-; CHECK-NEXT: br label %loop
-entry:
-  br label %loop
-
-loop:
-  br i1 %cond, label %loop, label %exit
-
-exit:
-  ret void
-}
-
-; Test for the case where a single conditional branch jumps to two
-; different loop header blocks.  Since we're currently using LoopSimplfy
-; this doesn't hit the interesting case, but once we remove that, we need
-; to be sure this keeps working.
-define void @test2(i32, i1 %cond) gc "statepoint-example" {
-; CHECK-LABEL: @test2
-; CHECK-LABEL: loop2.loop2_crit_edge:
-; CHECK: call void @do_safepoint
-; CHECK-NEXT: br label %loop2
-; CHECK-LABEL: loop2.loop_crit_edge:
-; CHECK: call void @do_safepoint
-; CHECK-NEXT: br label %loop
-entry:
-  br label %loop
-
-loop:
-  br label %loop2
-
-loop2:
-  br i1 %cond, label %loop, label %loop2
-}
-
-declare void @do_safepoint()
-define void @gc.safepoint_poll() {
-entry:
-  call void @do_safepoint()
-  ret void
-}