1 ; RUN: opt < %s -instcombine -S | FileCheck %s
2 target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
4 ; Uses InstCombine with DataLayout to propagate dereferenceable
5 ; attribute via gc.relocate: if the derived ptr is dereferenceable(N),
6 ; then the return attribute of gc.relocate is dereferenceable(N).
8 declare zeroext i1 @return_i1()
9 declare token @llvm.experimental.gc.statepoint.p0f_i1f(i64, i32, i1 ()*, i32, i32, ...)
10 declare i32 addrspace(1)* @llvm.experimental.gc.relocate.p1i32(token, i32, i32)
12 define i32 addrspace(1)* @deref(i32 addrspace(1)* dereferenceable(8) %dparam) gc "statepoint-example" {
13 ; Checks that a dereferenceabler pointer
15 ; CHECK: call dereferenceable(8)
17 %load = load i32, i32 addrspace(1)* %dparam
18 %tok = tail call token (i64, i32, i1 ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_i1f(i64 0, i32 0, i1 ()* @return_i1, i32 0, i32 0, i32 0, i32 0, i32 addrspace(1)* %dparam)
19 %relocate = call i32 addrspace(1)* @llvm.experimental.gc.relocate.p1i32(token %tok, i32 7, i32 7)
20 ret i32 addrspace(1)* %relocate
23 define i32 @explicit_nonnull(i32 addrspace(1)* nonnull %dparam) gc "statepoint-example" {
24 ; Checks that a nonnull pointer
25 ; CHECK-LABEL: @explicit_nonnull
28 %load = load i32, i32 addrspace(1)* %dparam
29 %tok = tail call token (i64, i32, i1 ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_i1f(i64 0, i32 0, i1 ()* @return_i1, i32 0, i32 0, i32 0, i32 0, i32 addrspace(1)* %dparam)
30 %relocate = call i32 addrspace(1)* @llvm.experimental.gc.relocate.p1i32(token %tok, i32 7, i32 7)
31 %cmp = icmp eq i32 addrspace(1)* %relocate, null
32 %ret_val = select i1 %cmp, i32 0, i32 1
36 define i32 @implicit_nonnull(i32 addrspace(1)* %dparam) gc "statepoint-example" {
37 ; Checks that a nonnull pointer
38 ; CHECK-LABEL: @implicit_nonnull
41 %cond = icmp eq i32 addrspace(1)* %dparam, null
42 br i1 %cond, label %no_gc, label %gc
44 %load = load i32, i32 addrspace(1)* %dparam
45 %tok = tail call token (i64, i32, i1 ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_i1f(i64 0, i32 0, i1 ()* @return_i1, i32 0, i32 0, i32 0, i32 0, i32 addrspace(1)* %dparam)
46 %relocate = call i32 addrspace(1)* @llvm.experimental.gc.relocate.p1i32(token %tok, i32 7, i32 7)
47 %cmp = icmp eq i32 addrspace(1)* %relocate, null
48 %ret_val = select i1 %cmp, i32 0, i32 1