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; Tests that the coro.align intrinsic could be lowered to correct alignment
; RUN: opt < %s -passes='cgscc(coro-split),simplifycfg,early-cse' -S | FileCheck %s
define ptr @f() presplitcoroutine {
entry:
%id = call token @llvm.coro.id(i32 0, ptr null, ptr null, ptr null)
%size = call i32 @llvm.coro.size.i32()
%align = call i32 @llvm.coro.align.i32()
%alloc = call ptr @aligned_alloc(i32 %align, i32 %size)
%hdl = call ptr @llvm.coro.begin(token %id, ptr %alloc)
%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 ptr @llvm.coro.free(token %id, ptr %hdl)
call void @free(ptr %mem)
br label %suspend
suspend:
call i1 @llvm.coro.end(ptr %hdl, i1 0, token none)
ret ptr %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 { ptr, ptr, i1 }
; CHECK-LABEL: define ptr @f()
; CHECK: %[[ALLOC:.+]] = call ptr @aligned_alloc(i32 8, i32 24)
; CHECK-NEXT: call noalias nonnull ptr @llvm.coro.begin(token %id, ptr %[[ALLOC]])
declare ptr @llvm.coro.free(token, ptr)
declare i32 @llvm.coro.size.i32()
declare i32 @llvm.coro.align.i32()
declare i8 @llvm.coro.suspend(token, i1)
declare void @llvm.coro.resume(ptr)
declare void @llvm.coro.destroy(ptr)
declare token @llvm.coro.id(i32, ptr, ptr, ptr)
declare i1 @llvm.coro.alloc(token)
declare ptr @llvm.coro.begin(token, ptr)
declare i1 @llvm.coro.end(ptr, i1, token)
declare noalias ptr @aligned_alloc(i32, i32)
declare void @free(ptr)
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