| Eric Christopher | cee313d | 2019-04-17 04:52:47 +0000 | [diff] [blame] | 1 | ; RUN: opt -rewrite-statepoints-for-gc -S < %s | FileCheck %s |
| 2 | ; RUN: opt -passes=rewrite-statepoints-for-gc -S < %s | FileCheck %s |
| 3 | |
| 4 | ; Test to make sure we destroy LCSSA's single entry phi nodes before |
| 5 | ; running liveness |
| 6 | |
| 7 | declare void @consume(...) "gc-leaf-function" |
| 8 | |
| 9 | define void @test6(i64 addrspace(1)* %obj) gc "statepoint-example" { |
| 10 | ; CHECK-LABEL: @test6 |
| 11 | entry: |
| 12 | br label %next |
| 13 | |
| 14 | next: ; preds = %entry |
| 15 | ; CHECK-LABEL: next: |
| 16 | ; CHECK-NEXT: gc.statepoint |
| 17 | ; CHECK-NEXT: gc.relocate |
| 18 | ; CHECK-NEXT: bitcast |
| 19 | ; CHECK-NEXT: @consume(i64 addrspace(1)* %obj.relocated.casted) |
| 20 | ; CHECK-NEXT: @consume(i64 addrspace(1)* %obj.relocated.casted) |
| 21 | ; Need to delete unreachable gc.statepoint call |
| 22 | %obj2 = phi i64 addrspace(1)* [ %obj, %entry ] |
| 23 | call void @foo() [ "deopt"() ] |
| 24 | call void (...) @consume(i64 addrspace(1)* %obj2) |
| 25 | call void (...) @consume(i64 addrspace(1)* %obj) |
| 26 | ret void |
| 27 | } |
| 28 | |
| 29 | define void @test7() gc "statepoint-example" { |
| 30 | ; CHECK-LABEL: test7 |
| 31 | ; CHECK-NOT: gc.statepoint |
| 32 | ; Need to delete unreachable gc.statepoint invoke - tested seperately given |
| 33 | ; a correct implementation could only remove the instructions, not the block |
| 34 | ret void |
| 35 | |
| 36 | unreached: ; preds = %unreached |
| 37 | %obj = phi i64 addrspace(1)* [ null, %unreached ] |
| 38 | call void @foo() [ "deopt"() ] |
| 39 | call void (...) @consume(i64 addrspace(1)* %obj) |
| 40 | br label %unreached |
| 41 | } |
| 42 | |
| 43 | define void @test8() gc "statepoint-example" personality i32 ()* undef { |
| 44 | ; CHECK-LABEL: test8 |
| 45 | ; CHECK-NOT: gc.statepoint |
| 46 | ; Bound the last check-not |
| 47 | ret void |
| 48 | |
| 49 | unreached: ; No predecessors! |
| 50 | invoke void @foo() [ "deopt"() ] |
| 51 | ; CHECK-LABEL: @foo |
| 52 | to label %normal_return unwind label %exceptional_return |
| 53 | |
| 54 | normal_return: ; preds = %unreached |
| 55 | ret void |
| 56 | |
| 57 | exceptional_return: ; preds = %unreached |
| 58 | %landing_pad4 = landingpad { i8*, i32 } |
| 59 | cleanup |
| 60 | ret void |
| 61 | } |
| 62 | |
| 63 | declare void @foo() |