1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt < %s -passes='instcombine<max-iterations=1>' -S | FileCheck %s
3 ; These tests check the optimizations specific to
4 ; pointers being relocated at a statepoint.
9 define i1 @test_null(i1 %cond) gc "statepoint-example" {
10 ; CHECK-LABEL: @test_null(
12 ; CHECK-NEXT: br i1 [[COND:%.*]], label [[LEFT:%.*]], label [[RIGHT:%.*]]
14 ; CHECK-NEXT: br label [[MERGE:%.*]]
16 ; CHECK-NEXT: [[SAFEPOINT_TOKEN:%.*]] = tail call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 0, i32 0, ptr nonnull elementtype(void ()) @func, i32 0, i32 0, i32 0, i32 0) [ "gc-live"() ]
17 ; CHECK-NEXT: br label [[MERGE]]
19 ; CHECK-NEXT: [[SAFEPOINT_TOKEN2:%.*]] = tail call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 0, i32 0, ptr nonnull elementtype(void ()) @func, i32 0, i32 0, i32 0, i32 0) [ "gc-live"() ]
20 ; CHECK-NEXT: ret i1 true
23 br i1 %cond, label %left, label %right
29 %safepoint_token = tail call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 0, i32 0, ptr elementtype(void ()) @func, i32 0, i32 0, i32 0, i32 0) ["gc-live" (ptr addrspace(1) null)]
30 %pnew = call ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token %safepoint_token, i32 0, i32 0)
34 %pnew_phi = phi ptr addrspace(1) [null, %right], [%pnew, %left]
35 %safepoint_token2 = tail call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 0, i32 0, ptr elementtype(void ()) @func, i32 0, i32 0, i32 0, i32 0) ["gc-live" (ptr addrspace(1) %pnew_phi)]
36 %pnew2 = call ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token %safepoint_token2, i32 0, i32 0)
37 %cmp = icmp eq ptr addrspace(1) %pnew2, null
41 define ptr addrspace(1) @test_undef(i1 %cond) gc "statepoint-example" {
42 ; CHECK-LABEL: @test_undef(
44 ; CHECK-NEXT: br i1 [[COND:%.*]], label [[LEFT:%.*]], label [[RIGHT:%.*]]
46 ; CHECK-NEXT: br label [[MERGE:%.*]]
48 ; CHECK-NEXT: [[SAFEPOINT_TOKEN:%.*]] = tail call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 0, i32 0, ptr nonnull elementtype(void ()) @func, i32 0, i32 0, i32 0, i32 0) [ "gc-live"() ]
49 ; CHECK-NEXT: br label [[MERGE]]
51 ; CHECK-NEXT: [[SAFEPOINT_TOKEN2:%.*]] = tail call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 0, i32 0, ptr nonnull elementtype(void ()) @func, i32 0, i32 0, i32 0, i32 0) [ "gc-live"() ]
52 ; CHECK-NEXT: ret ptr addrspace(1) undef
55 br i1 %cond, label %left, label %right
61 %safepoint_token = tail call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 0, i32 0, ptr elementtype(void ()) @func, i32 0, i32 0, i32 0, i32 0) ["gc-live" (ptr addrspace(1) undef)]
62 %pnew = call ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token %safepoint_token, i32 0, i32 0)
66 %pnew_phi = phi ptr addrspace(1) [undef, %right], [%pnew, %left]
67 %safepoint_token2 = tail call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 0, i32 0, ptr elementtype(void ()) @func, i32 0, i32 0, i32 0, i32 0) ["gc-live" (ptr addrspace(1) %pnew_phi)]
68 %pnew2 = call ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token %safepoint_token2, i32 0, i32 0)
69 ret ptr addrspace(1) %pnew2
72 declare token @llvm.experimental.gc.statepoint.p0(i64, i32, ptr, i32, i32, ...)
73 declare ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token, i32, i32)