; 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 i8* @f() presplitcoroutine {
entry:
  %x = alloca i64, align 16
  %y = alloca i32, align 32
  %z = alloca i32, align 16
  %alpha = alloca i1, align 8
  %id = call token @llvm.coro.id(i32 0, i8* null, i8* null, i8* null)
  %size = call i32 @llvm.coro.size.i32()
  %align = call i32 @llvm.coro.align.i32()
  %alloc = call i8* @aligned_alloc(i32 %align, i32 %size)
  %hdl = call i8* @llvm.coro.begin(token %id, i8* %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:
  %x.alias = bitcast i64* %x to i32*
  call void @capture_call(i32* %x.alias)
  %y.alias = bitcast i32* %y to i32*
  call void @capture_call(i32* %y.alias)
  %z.alias = bitcast i32* %z to i32*
  call void @capture_call(i32* %z.alias)
  %alpha.alias = bitcast i1* %alpha to i32*
  call void @capture_call(i32* %alpha.alias)
  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
}

; %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 { void (%f.Frame*)*, void (%f.Frame*)*, i64, i1, i1, [6 x i8], i32, [12 x i8], i32 }
; CHECK-LABEL:  define i8* @f()
; CHECK:          %[[ALLOC:.+]] = call i8* @aligned_alloc(i32 32, i32 56)
; CHECK-NEXT:     call noalias nonnull i8* @llvm.coro.begin(token %id, i8* %[[ALLOC]])

declare i8* @llvm.coro.free(token, i8*)
declare i32 @llvm.coro.size.i32()
declare i32 @llvm.coro.align.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 @capture_call(i32*)
declare void @nocapture_call(i32* nocapture)
declare noalias i8* @aligned_alloc(i32, i32)
declare void @free(i8*)