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https://github.com/c64scene-ar/llvm-6502.git
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73 lines
1.5 KiB
LLVM
73 lines
1.5 KiB
LLVM
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; RUN: opt %s -S -place-safepoints | FileCheck %s
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; Do we insert a simple entry safepoint?
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define void @test_entry(i8 addrspace(1)* %arg) {
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; CHECK-LABEL: @test_entry
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entry:
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; CHECK-LABEL: entry
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; CHECK: statepoint
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ret void
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}
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; Do we insert a backedge safepoint in a statically
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; infinite loop?
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define void @test_backedge(i8 addrspace(1)* %arg) {
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; CHECK-LABEL: test_backedge
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entry:
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; CHECK-LABEL: entry
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; This statepoint is technically not required, but we don't exploit that yet.
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; CHECK: statepoint
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br label %other
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; CHECK-LABEL: other
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; CHECK: statepoint
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other:
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%tmp = bitcast i8 addrspace(1)* %arg to i32 addrspace(1)*
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call void undef()
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br label %other
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}
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; Check that we remove an unreachable block rather than trying
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; to insert a backedge safepoint
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define void @test_unreachable(i8 addrspace(1)* %arg) {
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; CHECK-LABEL: test_unreachable
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entry:
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; CHECK-LABEL: entry
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; CHECK: statepoint
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ret void
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; CHECK-NOT: other
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; CHECK-NOT: statepoint
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other:
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br label %other
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}
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declare void @foo()
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; Do we turn a call into it's own statepoint
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define void @test_simple_call() {
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; CHECK-LABEL: test_simple_call
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entry:
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br label %other
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other:
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; CHECK-LABEL: other
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; CHECK: statepoint
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call void @foo()
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ret void
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}
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; This function is inlined when inserting a poll. To avoid recursive
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; issues, make sure we don't place safepoints in it.
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declare void @do_safepoint()
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define void @gc.safepoint_poll() {
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; CHECK-LABEL: gc.safepoint_poll
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; CHECK-LABEL: entry
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; CHECK-NEXT: do_safepoint
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; CHECK-NEXT: ret void
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entry:
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call void @do_safepoint()
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ret void
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}
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