| Eric Christopher | cee313d | 2019-04-17 04:52:47 +0000 | [diff] [blame] | 1 | ; FIXME: convert CHECK-INDIRECT into CHECK (and remove -check-prefixes) as soon |
| 2 | ; FIXME: as new-pass-manager's handling of indirect_non_convergent_call is fixed |
| 3 | ; |
| 4 | ; RUN: opt -functionattrs -S < %s | FileCheck %s --check-prefixes=CHECK,CHECK-INDIRECT |
| 5 | ; RUN: opt -passes=function-attrs -S < %s | FileCheck %s |
| 6 | |
| 7 | ; CHECK: Function Attrs |
| 8 | ; CHECK-NOT: convergent |
| 9 | ; CHECK-NEXT: define i32 @nonleaf() |
| 10 | define i32 @nonleaf() convergent { |
| 11 | %a = call i32 @leaf() |
| 12 | ret i32 %a |
| 13 | } |
| 14 | |
| 15 | ; CHECK: Function Attrs |
| 16 | ; CHECK-NOT: convergent |
| 17 | ; CHECK-NEXT: define i32 @leaf() |
| 18 | define i32 @leaf() convergent { |
| 19 | ret i32 0 |
| 20 | } |
| 21 | |
| 22 | ; CHECK: Function Attrs |
| 23 | ; CHECK-SAME: convergent |
| 24 | ; CHECK-NEXT: declare i32 @k() |
| 25 | declare i32 @k() convergent |
| 26 | |
| 27 | ; CHECK: Function Attrs |
| 28 | ; CHECK-SAME: convergent |
| 29 | ; CHECK-NEXT: define i32 @extern() |
| 30 | define i32 @extern() convergent { |
| 31 | %a = call i32 @k() convergent |
| 32 | ret i32 %a |
| 33 | } |
| 34 | |
| 35 | ; Convergent should not be removed on the function here. Although the call is |
| 36 | ; not explicitly convergent, it picks up the convergent attr from the callee. |
| 37 | ; |
| 38 | ; CHECK: Function Attrs |
| 39 | ; CHECK-SAME: convergent |
| 40 | ; CHECK-NEXT: define i32 @extern_non_convergent_call() |
| 41 | define i32 @extern_non_convergent_call() convergent { |
| 42 | %a = call i32 @k() |
| 43 | ret i32 %a |
| 44 | } |
| 45 | |
| 46 | ; CHECK: Function Attrs |
| 47 | ; CHECK-SAME: convergent |
| 48 | ; CHECK-NEXT: define i32 @indirect_convergent_call( |
| 49 | define i32 @indirect_convergent_call(i32 ()* %f) convergent { |
| 50 | %a = call i32 %f() convergent |
| 51 | ret i32 %a |
| 52 | } |
| 53 | ; Give indirect_non_convergent_call the norecurse attribute so we get a |
| 54 | ; "Function Attrs" comment in the output. |
| 55 | ; |
| 56 | ; CHECK: Function Attrs |
| 57 | ; CHECK-INDIRECT-NOT: convergent |
| 58 | ; CHECK-INDIRECT-NEXT: define i32 @indirect_non_convergent_call( |
| 59 | define i32 @indirect_non_convergent_call(i32 ()* %f) convergent norecurse { |
| 60 | %a = call i32 %f() |
| 61 | ret i32 %a |
| 62 | } |
| 63 | |
| 64 | ; CHECK: Function Attrs |
| 65 | ; CHECK-SAME: convergent |
| 66 | ; CHECK-NEXT: declare void @llvm.nvvm.barrier0() |
| 67 | declare void @llvm.nvvm.barrier0() convergent |
| 68 | |
| 69 | ; CHECK: Function Attrs |
| 70 | ; CHECK-SAME: convergent |
| 71 | ; CHECK-NEXT: define i32 @intrinsic() |
| 72 | define i32 @intrinsic() convergent { |
| 73 | ; Implicitly convergent, because the intrinsic is convergent. |
| 74 | call void @llvm.nvvm.barrier0() |
| 75 | ret i32 0 |
| 76 | } |
| 77 | |
| 78 | ; CHECK: Function Attrs |
| 79 | ; CHECK-NOT: convergent |
| 80 | ; CHECK-NEXT: define i32 @recursive1() |
| 81 | define i32 @recursive1() convergent { |
| 82 | %a = call i32 @recursive2() convergent |
| 83 | ret i32 %a |
| 84 | } |
| 85 | |
| 86 | ; CHECK: Function Attrs |
| 87 | ; CHECK-NOT: convergent |
| 88 | ; CHECK-NEXT: define i32 @recursive2() |
| 89 | define i32 @recursive2() convergent { |
| 90 | %a = call i32 @recursive1() convergent |
| 91 | ret i32 %a |
| 92 | } |
| 93 | |
| 94 | ; CHECK: Function Attrs |
| 95 | ; CHECK-SAME: convergent |
| 96 | ; CHECK-NEXT: define i32 @noopt() |
| 97 | define i32 @noopt() convergent optnone noinline { |
| 98 | %a = call i32 @noopt_friend() convergent |
| 99 | ret i32 0 |
| 100 | } |
| 101 | |
| 102 | ; A function which is mutually-recursive with a convergent, optnone function |
| 103 | ; shouldn't have its convergent attribute stripped. |
| 104 | ; CHECK: Function Attrs |
| 105 | ; CHECK-SAME: convergent |
| 106 | ; CHECK-NEXT: define i32 @noopt_friend() |
| 107 | define i32 @noopt_friend() convergent { |
| 108 | %a = call i32 @noopt() |
| 109 | ret i32 0 |
| 110 | } |