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