forked from OSchip/llvm-project
78 lines
1.8 KiB
LLVM
78 lines
1.8 KiB
LLVM
; 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
|
|
}
|