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; Tests that coro-split pass splits the coroutine into f, f.resume and f.destroy
; RUN: opt < %s -passes='cgscc(coro-split),simplifycfg,early-cse' -S | FileCheck %s
define i8* @f() "coroutine.presplit"="1" {
entry:
%id = call token @llvm.coro.id(i32 0, i8* null, i8* null, i8* null)
%need.alloc = call i1 @llvm.coro.alloc(token %id)
br i1 %need.alloc, label %dyn.alloc, label %begin
dyn.alloc:
%size = call i32 @llvm.coro.size.i32()
%alloc = call i8* @malloc(i32 %size)
br label %begin
begin:
%phi = phi i8* [ null, %entry ], [ %alloc, %dyn.alloc ]
%hdl = call i8* @llvm.coro.begin(token %id, i8* %phi)
call void @print(i32 0)
%0 = call i8 @llvm.coro.suspend(token none, i1 false)
switch i8 %0, label %suspend [i8 0, label %resume
i8 1, label %cleanup]
resume:
call void @print(i32 1)
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-LABEL: @f(
; CHECK: call i8* @malloc
; CHECK: @llvm.coro.begin(token %id, i8* %phi)
; CHECK: store void (%f.Frame*)* @f.resume, void (%f.Frame*)** %resume.addr
; CHECK: %[[SEL:.+]] = select i1 %need.alloc, void (%f.Frame*)* @f.destroy, void (%f.Frame*)* @f.cleanup
; CHECK: store void (%f.Frame*)* %[[SEL]], void (%f.Frame*)** %destroy.addr
; CHECK: call void @print(i32 0)
; CHECK-NOT: call void @print(i32 1)
; CHECK-NOT: call void @free(
; CHECK: ret i8* %hdl
; CHECK-LABEL: @f.resume(
; CHECK-NOT: call i8* @malloc
; CHECK-NOT: call void @print(i32 0)
; CHECK: call void @print(i32 1)
; CHECK-NOT: call void @print(i32 0)
; CHECK: call void @free(
; CHECK: ret void
; CHECK-LABEL: @f.destroy(
; CHECK-NOT: call i8* @malloc
; CHECK-NOT: call void @print(
; CHECK: call void @free(
; CHECK: ret void
; CHECK-LABEL: @f.cleanup(
; CHECK-NOT: call i8* @malloc
; CHECK-NOT: call void @print(
; CHECK-NOT: call void @free(
; CHECK: ret void
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 noalias i8* @malloc(i32)
declare void @print(i32)
declare void @free(i8*) willreturn
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