| ; Tests that allocas escaped through function calls will live on the frame. |
| ; RUN: opt < %s -passes='cgscc(coro-split),simplifycfg,early-cse' -S | FileCheck %s |
| |
| define i8* @f() "coroutine.presplit"="1" { |
| entry: |
| %x = alloca i64 |
| %y = alloca i64 |
| %id = call token @llvm.coro.id(i32 0, i8* null, i8* null, i8* null) |
| %size = call i32 @llvm.coro.size.i32() |
| %alloc = call i8* @malloc(i32 %size) |
| %hdl = call i8* @llvm.coro.begin(token %id, i8* %alloc) |
| %x.alias = bitcast i64* %x to i32* |
| call void @capture_call(i32* %x.alias) |
| %y.alias = bitcast i64* %y to i32* |
| call void @nocapture_call(i32* %y.alias) |
| %sp1 = call i8 @llvm.coro.suspend(token none, i1 false) |
| switch i8 %sp1, label %suspend [i8 0, label %resume |
| i8 1, label %cleanup] |
| resume: |
| br label %cleanup |
| |
| cleanup: |
| %mem = call i8* @llvm.coro.free(token %id, i8* %hdl) |
| call void @free(i8* %mem) |
| br label %suspend |
| |
| suspend: |
| call i1 @llvm.coro.end(i8* %hdl, i1 0) |
| ret i8* %hdl |
| } |
| |
| ; %x needs to go to the frame since it's escaped; %y will stay as local since it doesn't escape. |
| ; CHECK: %f.Frame = type { void (%f.Frame*)*, void (%f.Frame*)*, i64, i1 } |
| ; CHECK-LABEL: define i8* @f() |
| ; CHECK: %y = alloca i64, align 8 |
| ; CHECK: %x.reload.addr = getelementptr inbounds %f.Frame, %f.Frame* %FramePtr, i32 0, i32 2 |
| ; CHECK: %x.alias = bitcast i64* %x.reload.addr to i32* |
| ; CHECK: call void @capture_call(i32* %x.alias) |
| ; CHECK: %y.alias = bitcast i64* %y to i32* |
| ; CHECK: call void @nocapture_call(i32* %y.alias) |
| |
| declare i8* @llvm.coro.free(token, i8*) |
| declare i32 @llvm.coro.size.i32() |
| declare i8 @llvm.coro.suspend(token, i1) |
| declare void @llvm.coro.resume(i8*) |
| declare void @llvm.coro.destroy(i8*) |
| |
| declare token @llvm.coro.id(i32, i8*, i8*, i8*) |
| declare i1 @llvm.coro.alloc(token) |
| declare i8* @llvm.coro.begin(token, i8*) |
| declare i1 @llvm.coro.end(i8*, i1) |
| |
| declare void @capture_call(i32*) |
| declare void @nocapture_call(i32* nocapture) |
| declare noalias i8* @malloc(i32) |
| declare void @free(i8*) |