| ; RUN: opt -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() |
