| ; Tests that the meaningless lifetime intrinsics could be removed after corosplit. |
| ; RUN: opt < %s -passes='cgscc(coro-split),simplifycfg,early-cse' -S | FileCheck %s |
| |
| define ptr @f(i1 %n) presplitcoroutine { |
| entry: |
| %x = alloca i64 |
| %y = alloca i64 |
| %id = call token @llvm.coro.id(i32 0, ptr null, ptr null, ptr null) |
| %size = call i32 @llvm.coro.size.i32() |
| %alloc = call ptr @malloc(i32 %size) |
| %hdl = call ptr @llvm.coro.begin(token %id, ptr %alloc) |
| br i1 %n, label %flag_true, label %flag_false |
| |
| flag_true: |
| call void @llvm.lifetime.start.p0(i64 8, ptr %x) |
| br label %merge |
| |
| flag_false: |
| call void @llvm.lifetime.start.p0(i64 8, ptr %y) |
| br label %merge |
| |
| merge: |
| %phi = phi ptr [ %x, %flag_true ], [ %y, %flag_false ] |
| store i8 1, ptr %phi |
| %sp1 = call i8 @llvm.coro.suspend(token none, i1 false) |
| switch i8 %sp1, label %suspend [i8 0, label %resume |
| i8 1, label %cleanup] |
| resume: |
| call void @print(ptr %phi) |
| call void @llvm.lifetime.end.p0(i64 8, ptr %x) |
| call void @llvm.lifetime.end.p0(i64 8, ptr %y) |
| br label %cleanup |
| |
| cleanup: |
| %mem = call ptr @llvm.coro.free(token %id, ptr %hdl) |
| call void @free(ptr %mem) |
| br label %suspend |
| |
| suspend: |
| call i1 @llvm.coro.end(ptr %hdl, i1 0, token none) |
| ret ptr %hdl |
| } |
| |
| ; CHECK-NOT: call{{.*}}@llvm.lifetime |
| |
| declare ptr @llvm.coro.free(token, ptr) |
| declare i32 @llvm.coro.size.i32() |
| declare i8 @llvm.coro.suspend(token, i1) |
| declare void @llvm.coro.resume(ptr) |
| declare void @llvm.coro.destroy(ptr) |
| |
| declare token @llvm.coro.id(i32, ptr, ptr, ptr) |
| declare i1 @llvm.coro.alloc(token) |
| declare ptr @llvm.coro.begin(token, ptr) |
| declare i1 @llvm.coro.end(ptr, i1, token) |
| |
| declare void @llvm.lifetime.start.p0(i64, ptr nocapture) |
| declare void @llvm.lifetime.end.p0(i64, ptr nocapture) |
| |
| declare void @print(ptr) |
| declare noalias ptr @malloc(i32) |
| declare void @free(ptr) |
