1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt < %s -instcombine -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, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* nonnull @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, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* nonnull @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, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @func, i32 0, i32 0, i32 0, i32 0) ["gc-live" (i32* null)]
30 %pnew = call i32* @llvm.experimental.gc.relocate.p1i32(token %safepoint_token, i32 0, i32 0)
34 %pnew_phi = phi i32* [null, %right], [%pnew, %left]
35 %safepoint_token2 = tail call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @func, i32 0, i32 0, i32 0, i32 0) ["gc-live" (i32* %pnew_phi)]
36 %pnew2 = call i32* @llvm.experimental.gc.relocate.p1i32(token %safepoint_token2, i32 0, i32 0)
37 %cmp = icmp eq i32* %pnew2, null
41 define i32* @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, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* nonnull @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, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* nonnull @func, i32 0, i32 0, i32 0, i32 0) [ "gc-live"() ]
52 ; CHECK-NEXT: ret i32* undef
55 br i1 %cond, label %left, label %right
61 %safepoint_token = tail call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @func, i32 0, i32 0, i32 0, i32 0) ["gc-live" (i32* undef)]
62 %pnew = call i32* @llvm.experimental.gc.relocate.p1i32(token %safepoint_token, i32 0, i32 0)
66 %pnew_phi = phi i32* [undef, %right], [%pnew, %left]
67 %safepoint_token2 = tail call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @func, i32 0, i32 0, i32 0, i32 0) ["gc-live" (i32* %pnew_phi)]
68 %pnew2 = call i32* @llvm.experimental.gc.relocate.p1i32(token %safepoint_token2, i32 0, i32 0)
72 declare token @llvm.experimental.gc.statepoint.p0f_isVoidf(i64, i32, void ()*, i32, i32, ...)
73 declare i32* @llvm.experimental.gc.relocate.p1i32(token, i32, i32)