forked from OSchip/llvm-project
64 lines
2.0 KiB
LLVM
64 lines
2.0 KiB
LLVM
; RUN: opt -rewrite-statepoints-for-gc -S < %s | FileCheck %s
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; RUN: opt -passes=rewrite-statepoints-for-gc -S < %s | FileCheck %s
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; Test to make sure we destroy LCSSA's single entry phi nodes before
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; running liveness
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declare void @consume(...) "gc-leaf-function"
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define void @test6(i64 addrspace(1)* %obj) gc "statepoint-example" {
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; CHECK-LABEL: @test6
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entry:
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br label %next
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next: ; preds = %entry
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; CHECK-LABEL: next:
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; CHECK-NEXT: gc.statepoint
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; CHECK-NEXT: gc.relocate
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; CHECK-NEXT: bitcast
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; CHECK-NEXT: @consume(i64 addrspace(1)* %obj.relocated.casted)
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; CHECK-NEXT: @consume(i64 addrspace(1)* %obj.relocated.casted)
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; Need to delete unreachable gc.statepoint call
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%obj2 = phi i64 addrspace(1)* [ %obj, %entry ]
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call void @foo() [ "deopt"() ]
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call void (...) @consume(i64 addrspace(1)* %obj2)
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call void (...) @consume(i64 addrspace(1)* %obj)
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ret void
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}
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define void @test7() gc "statepoint-example" {
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; CHECK-LABEL: test7
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; CHECK-NOT: gc.statepoint
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; Need to delete unreachable gc.statepoint invoke - tested seperately given
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; a correct implementation could only remove the instructions, not the block
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ret void
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unreached: ; preds = %unreached
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%obj = phi i64 addrspace(1)* [ null, %unreached ]
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call void @foo() [ "deopt"() ]
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call void (...) @consume(i64 addrspace(1)* %obj)
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br label %unreached
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}
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define void @test8() gc "statepoint-example" personality i32 ()* undef {
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; CHECK-LABEL: test8
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; CHECK-NOT: gc.statepoint
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; Bound the last check-not
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ret void
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unreached: ; No predecessors!
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invoke void @foo() [ "deopt"() ]
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; CHECK-LABEL: @foo
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to label %normal_return unwind label %exceptional_return
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normal_return: ; preds = %unreached
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ret void
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exceptional_return: ; preds = %unreached
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%landing_pad4 = landingpad { i8*, i32 }
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cleanup
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ret void
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}
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declare void @foo()
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