1 ; RUN: opt -S -strip-gc-relocates -instcombine < %s | FileCheck %s
2 ; test utility/debugging pass which removes gc.relocates, inserted by -rewrite-statepoints-for-gc
3 declare void @use_obj32(i32 addrspace(1)*) "gc-leaf-function"
6 declare token @llvm.experimental.gc.statepoint.p0f_isVoidf(i64, i32, void ()*, i32, i32, ...)
7 declare i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token, i32, i32) #0
8 declare void @do_safepoint()
10 declare i32 addrspace(1)* @new_instance() #1
13 ; Simple case: remove gc.relocate
14 define i32 addrspace(1)* @test1(i32 addrspace(1)* %arg) gc "statepoint-example" {
17 ; CHECK: gc.statepoint
18 ; CHECK-NOT: gc.relocate
19 ; CHECK: ret i32 addrspace(1)* %arg
20 %statepoint_token = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* @g, i32 0, i32 0, i32 0, i32 1, i32 100, i32 addrspace(1)* %arg)
21 %arg.relocated = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token %statepoint_token, i32 8, i32 8) ; (%arg, %arg)
22 %arg.relocated.casted = bitcast i8 addrspace(1)* %arg.relocated to i32 addrspace(1)*
23 ret i32 addrspace(1)* %arg.relocated.casted
26 ; Remove gc.relocates in presence of nested relocates.
27 define void @test2(i32 addrspace(1)* %base) gc "statepoint-example" {
31 ; CHECK-NOT: gc.relocate
32 ; CHECK: call void @use_obj32(i32 addrspace(1)* %ptr.gep1)
33 ; CHECK: call void @use_obj32(i32 addrspace(1)* %ptr.gep1)
34 %ptr.gep = getelementptr i32, i32 addrspace(1)* %base, i32 15
35 %ptr.gep1 = getelementptr i32, i32 addrspace(1)* %ptr.gep, i32 15
36 %statepoint_token = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* @do_safepoint, i32 0, i32 0, i32 0, i32 0, i32 addrspace(1)* %ptr.gep1, i32 addrspace(1)* %base)
37 %ptr.gep1.relocated = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token %statepoint_token, i32 8, i32 7) ; (%base, %ptr.gep1)
38 %ptr.gep1.relocated.casted = bitcast i8 addrspace(1)* %ptr.gep1.relocated to i32 addrspace(1)*
39 %base.relocated = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token %statepoint_token, i32 8, i32 8) ; (%base, %base)
40 %base.relocated.casted = bitcast i8 addrspace(1)* %base.relocated to i32 addrspace(1)*
41 call void @use_obj32(i32 addrspace(1)* %ptr.gep1.relocated.casted)
42 %statepoint_token1 = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* @do_safepoint, i32 0, i32 0, i32 0, i32 0, i32 addrspace(1)* %ptr.gep1.relocated.casted, i32 addrspace(1)* %base.relocated.casted)
43 %ptr.gep1.relocated2 = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token %statepoint_token1, i32 8, i32 7) ; (%base.relocated.casted, %ptr.gep1.relocated.casted)
44 %ptr.gep1.relocated2.casted = bitcast i8 addrspace(1)* %ptr.gep1.relocated2 to i32 addrspace(1)*
45 %base.relocated3 = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token %statepoint_token1, i32 8, i32 8) ; (%base.relocated.casted, %base.relocated.casted)
46 %base.relocated3.casted = bitcast i8 addrspace(1)* %base.relocated3 to i32 addrspace(1)*
47 call void @use_obj32(i32 addrspace(1)* %ptr.gep1.relocated2.casted)
51 ; landing pad gc.relocates removed by instcombine since it has no uses.
52 define i32 addrspace(1)* @test3(i32 addrspace(1)* %arg) gc "statepoint-example" personality i32 8 {
54 ; CHECK: gc.statepoint
55 ; CHECK-LABEL: normal_dest:
56 ; CHECK-NOT: gc.relocate
57 ; CHECK: ret i32 addrspace(1)* %arg
58 ; CHECK-LABEL: unwind_dest:
59 ; CHECK-NOT: gc.relocate
61 %statepoint_token = invoke token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* @g, i32 0, i32 0, i32 0, i32 1, i32 100, i32 addrspace(1)* %arg)
62 to label %normal_dest unwind label %unwind_dest
64 normal_dest: ; preds = %entry
65 %arg.relocated1 = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token %statepoint_token, i32 8, i32 8) ; (%arg, %arg)
66 %arg.relocated1.casted = bitcast i8 addrspace(1)* %arg.relocated1 to i32 addrspace(1)*
67 ret i32 addrspace(1)* %arg.relocated1.casted
69 unwind_dest: ; preds = %entry
70 %lpad = landingpad token
72 %arg.relocated = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token %lpad, i32 8, i32 8) ; (%arg, %arg)
73 %arg.relocated.casted = bitcast i8 addrspace(1)* %arg.relocated to i32 addrspace(1)*
78 define void @test4(i1 %cond) gc "statepoint-example" {
81 %base1 = call i32 addrspace(1)* @new_instance()
82 %base2 = call i32 addrspace(1)* @new_instance()
83 br i1 %cond, label %here, label %there
85 here: ; preds = %entry
88 there: ; preds = %entry
91 merge: ; preds = %there, %here
93 ; CHECK-NOT: gc.relocate
94 ; CHECK: %ptr.gep.remat = getelementptr i32, i32 addrspace(1)* %basephi.base
95 %basephi.base = phi i32 addrspace(1)* [ %base1, %here ], [ %base2, %there ], !is_base_value !0
96 %basephi = phi i32 addrspace(1)* [ %base1, %here ], [ %base2, %there ]
97 %ptr.gep = getelementptr i32, i32 addrspace(1)* %basephi, i32 15
98 %statepoint_token = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* @do_safepoint, i32 0, i32 0, i32 0, i32 0, i32 addrspace(1)* %basephi.base)
99 %basephi.base.relocated = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token %statepoint_token, i32 7, i32 7) ; (%basephi.base, %basephi.base)
100 %basephi.base.relocated.casted = bitcast i8 addrspace(1)* %basephi.base.relocated to i32 addrspace(1)*
101 %ptr.gep.remat = getelementptr i32, i32 addrspace(1)* %basephi.base.relocated.casted, i32 15
102 call void @use_obj32(i32 addrspace(1)* %ptr.gep.remat)
106 ; The gc.relocate type is different from %arg, but removing the gc.relocate,
107 ; needs a bitcast to be added from i32 addrspace(1)* to i8 addrspace(1)*
108 define i8 addrspace(1)* @test5(i32 addrspace(1)* %arg) gc "statepoint-example" {
111 ; CHECK: gc.statepoint
112 ; CHECK-NOT: gc.relocate
113 %statepoint_token = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* @g, i32 0, i32 0, i32 0, i32 1, i32 100, i32 addrspace(1)* %arg)
114 %arg.relocated = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token %statepoint_token, i32 8, i32 8) ; (%arg, %arg)
115 ret i8 addrspace(1)* %arg.relocated
118 attributes #0 = { nounwind readonly }
119 attributes #1 = { nounwind "gc-leaf-function" }