| ; Test that in some simple cases allocas will not live on the frame even |
| ; though their pointers are stored. |
| ; RUN: opt < %s -passes='cgscc(coro-split),simplifycfg,early-cse' -S | FileCheck %s |
| |
| %handle = type { i8* } |
| |
| define i8* @f() "coroutine.presplit"="1" { |
| entry: |
| %0 = alloca %"handle", align 8 |
| %1 = alloca %"handle"*, align 8 |
| %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) |
| br label %tricky |
| |
| tricky: |
| %2 = call i8* @await_suspend() |
| %3 = getelementptr inbounds %"handle", %"handle"* %0, i32 0, i32 0 |
| store i8* %2, i8** %3, align 8 |
| %4 = bitcast %"handle"** %1 to i8* |
| call void @llvm.lifetime.start.p0i8(i64 8, i8* %4) |
| store %"handle"* %0, %"handle"** %1, align 8 |
| %5 = load %"handle"*, %"handle"** %1, align 8 |
| %6 = getelementptr inbounds %"handle", %"handle"* %5, i32 0, i32 0 |
| %7 = load i8*, i8** %6, align 8 |
| %8 = bitcast %"handle"** %1 to i8* |
| call void @llvm.lifetime.end.p0i8(i64 8, i8* %8) |
| br label %finish |
| |
| finish: |
| %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 |
| } |
| |
| ; CHECK: %f.Frame = type { void (%f.Frame*)*, void (%f.Frame*)*, i1 } |
| ; CHECK-LABEL: @f( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[TMP0:%.*]] = alloca [[HANDLE:%.*]], align 8 |
| ; CHECK-NEXT: [[TMP1:%.*]] = alloca %handle*, align 8 |
| |
| ; CHECK: [[TMP2:%.*]] = call i8* @await_suspend() |
| ; CHECK-NEXT: [[TMP3:%.*]] = getelementptr inbounds [[HANDLE]], %handle* [[TMP0]], i32 0, i32 0 |
| ; CHECK-NEXT: store i8* [[TMP2]], i8** [[TMP3]], align 8 |
| ; CHECK-NEXT: [[TMP4:%.*]] = bitcast %handle** [[TMP1]] to i8* |
| ; CHECK-NEXT: call void @llvm.lifetime.start.p0i8(i64 8, i8* [[TMP4]]) |
| ; CHECK-NEXT: store %handle* [[TMP0]], %handle** [[TMP1]], align 8 |
| ; CHECK-NEXT: call void @llvm.lifetime.end.p0i8(i64 8, i8* [[TMP4]]) |
| ; |
| |
| 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 @llvm.lifetime.start.p0i8(i64, i8* nocapture) |
| declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) |
| |
| declare i8* @await_suspend() |
| declare void @print(i32* nocapture) |
| declare noalias i8* @malloc(i32) |
| declare void @free(i8*) |