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coro-frame-reuse-alloca-02.ll
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; Tests that variables of different type in a Corotuine whose lifetime range is not overlapping each other
; re-use the same slot in Coroutine frame.
; RUN: opt < %s -passes='cgscc(coro-split),simplifycfg,early-cse' -reuse-storage-in-coroutine-frame -S | FileCheck %s
%"struct.task::promise_type" = type { i8 }
%struct.awaitable = type { i8 }
%struct.big_structure = type { [500 x i8] }
%struct.big_structure.2 = type { [300 x i8] }
declare i8* @malloc(i64)
declare void @consume(%struct.big_structure*)
declare void @consume.2(%struct.big_structure.2*)
define void @a(i1 zeroext %cond) "coroutine.presplit"="1" {
entry:
%__promise = alloca %"struct.task::promise_type", align 1
%a = alloca %struct.big_structure, align 1
%ref.tmp7 = alloca %struct.awaitable, align 1
%b = alloca %struct.big_structure.2, align 1
%ref.tmp18 = alloca %struct.awaitable, align 1
%0 = getelementptr inbounds %"struct.task::promise_type", %"struct.task::promise_type"* %__promise, i64 0, i32 0
%1 = call token @llvm.coro.id(i32 16, i8* nonnull %0, i8* bitcast (void (i1)* @a to i8*), i8* null)
br label %init.ready
init.ready:
%2 = call noalias nonnull i8* @llvm.coro.begin(token %1, i8* null)
call void @llvm.lifetime.start.p0i8(i64 1, i8* nonnull %0)
br i1 %cond, label %if.then, label %if.else
if.then:
%3 = getelementptr inbounds %struct.big_structure, %struct.big_structure* %a, i64 0, i32 0, i64 0
call void @llvm.lifetime.start.p0i8(i64 500, i8* nonnull %3)
call void @consume(%struct.big_structure* nonnull %a)
%save = call token @llvm.coro.save(i8* null)
%suspend = call i8 @llvm.coro.suspend(token %save, i1 false)
switch i8 %suspend, label %coro.ret [
i8 0, label %await.ready
i8 1, label %cleanup1
]
await.ready:
call void @llvm.lifetime.end.p0i8(i64 500, i8* nonnull %3)
br label %cleanup1
if.else:
%4 = getelementptr inbounds %struct.big_structure.2, %struct.big_structure.2* %b, i64 0, i32 0, i64 0
call void @llvm.lifetime.start.p0i8(i64 300, i8* nonnull %4)
call void @consume.2(%struct.big_structure.2* nonnull %b)
%save2 = call token @llvm.coro.save(i8* null)
%suspend2 = call i8 @llvm.coro.suspend(token %save2, i1 false)
switch i8 %suspend2, label %coro.ret [
i8 0, label %await2.ready
i8 1, label %cleanup2
]
await2.ready:
call void @llvm.lifetime.end.p0i8(i64 300, i8* nonnull %4)
br label %cleanup2
cleanup1:
call void @llvm.lifetime.end.p0i8(i64 500, i8* nonnull %3)
br label %cleanup
cleanup2:
call void @llvm.lifetime.end.p0i8(i64 300, i8* nonnull %4)
br label %cleanup
cleanup:
call i8* @llvm.coro.free(token %1, i8* %2)
br label %coro.ret
coro.ret:
call i1 @llvm.coro.end(i8* null, i1 false)
ret void
}
; CHECK: %a.Frame = type { void (%a.Frame*)*, void (%a.Frame*)*, %"struct.task::promise_type", %struct.big_structure, i1 }
; CHECK-LABEL: @a.resume(
; CHECK: %[[A:.*]] = getelementptr inbounds %a.Frame, %a.Frame* %FramePtr, i32 0, i32 3
; CHECK: %{{.*}} = bitcast %struct.big_structure* %[[A]] to %struct.big_structure.2*
declare token @llvm.coro.id(i32, i8* readnone, i8* nocapture readonly, i8*)
declare i1 @llvm.coro.alloc(token) #3
declare i64 @llvm.coro.size.i64() #5
declare i8* @llvm.coro.begin(token, i8* writeonly) #3
declare token @llvm.coro.save(i8*) #3
declare i8* @llvm.coro.frame() #5
declare i8 @llvm.coro.suspend(token, i1) #3
declare i8* @llvm.coro.free(token, i8* nocapture readonly) #2
declare i1 @llvm.coro.end(i8*, i1) #3
declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #4
declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) #4