1; Test that in some simple cases allocas will not live on the frame even 2; though their pointers are stored. 3; RUN: opt < %s -passes='cgscc(coro-split),simplifycfg,early-cse' -S | FileCheck %s 4 5%handle = type { i8* } 6 7define i8* @f() "coroutine.presplit"="1" { 8entry: 9 %0 = alloca %"handle", align 8 10 %1 = alloca %"handle"*, align 8 11 %id = call token @llvm.coro.id(i32 0, i8* null, i8* null, i8* null) 12 %size = call i32 @llvm.coro.size.i32() 13 %alloc = call i8* @malloc(i32 %size) 14 %hdl = call i8* @llvm.coro.begin(token %id, i8* %alloc) 15 br label %tricky 16 17tricky: 18 %2 = call i8* @await_suspend() 19 %3 = getelementptr inbounds %"handle", %"handle"* %0, i32 0, i32 0 20 store i8* %2, i8** %3, align 8 21 %4 = bitcast %"handle"** %1 to i8* 22 call void @llvm.lifetime.start.p0i8(i64 8, i8* %4) 23 store %"handle"* %0, %"handle"** %1, align 8 24 %5 = load %"handle"*, %"handle"** %1, align 8 25 %6 = getelementptr inbounds %"handle", %"handle"* %5, i32 0, i32 0 26 %7 = load i8*, i8** %6, align 8 27 %8 = bitcast %"handle"** %1 to i8* 28 call void @llvm.lifetime.end.p0i8(i64 8, i8* %8) 29 br label %finish 30 31finish: 32 %sp1 = call i8 @llvm.coro.suspend(token none, i1 false) 33 switch i8 %sp1, label %suspend [i8 0, label %resume 34 i8 1, label %cleanup] 35resume: 36 br label %cleanup 37 38cleanup: 39 %mem = call i8* @llvm.coro.free(token %id, i8* %hdl) 40 call void @free(i8* %mem) 41 br label %suspend 42 43suspend: 44 call i1 @llvm.coro.end(i8* %hdl, i1 0) 45 ret i8* %hdl 46} 47 48; CHECK: %f.Frame = type { void (%f.Frame*)*, void (%f.Frame*)*, i1 } 49; CHECK-LABEL: @f( 50; CHECK-NEXT: entry: 51; CHECK-NEXT: [[TMP0:%.*]] = alloca [[HANDLE:%.*]], align 8 52; CHECK-NEXT: [[TMP1:%.*]] = alloca %handle*, align 8 53 54; CHECK: [[TMP2:%.*]] = call i8* @await_suspend() 55; CHECK-NEXT: [[TMP3:%.*]] = getelementptr inbounds [[HANDLE]], %handle* [[TMP0]], i32 0, i32 0 56; CHECK-NEXT: store i8* [[TMP2]], i8** [[TMP3]], align 8 57; CHECK-NEXT: [[TMP4:%.*]] = bitcast %handle** [[TMP1]] to i8* 58; CHECK-NEXT: call void @llvm.lifetime.start.p0i8(i64 8, i8* [[TMP4]]) 59; CHECK-NEXT: store %handle* [[TMP0]], %handle** [[TMP1]], align 8 60; CHECK-NEXT: call void @llvm.lifetime.end.p0i8(i64 8, i8* [[TMP4]]) 61; 62 63declare i8* @llvm.coro.free(token, i8*) 64declare i32 @llvm.coro.size.i32() 65declare i8 @llvm.coro.suspend(token, i1) 66declare void @llvm.coro.resume(i8*) 67declare void @llvm.coro.destroy(i8*) 68 69declare token @llvm.coro.id(i32, i8*, i8*, i8*) 70declare i1 @llvm.coro.alloc(token) 71declare i8* @llvm.coro.begin(token, i8*) 72declare i1 @llvm.coro.end(i8*, i1) 73 74declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) 75declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) 76 77declare i8* @await_suspend() 78declare void @print(i32* nocapture) 79declare noalias i8* @malloc(i32) 80declare void @free(i8*) 81