llvm/test/Transforms/Coroutines/coro-alloca-09.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
; Tests that CoroSplit can succesfully determine allocas should live on the frame
; if their aliases are used across suspension points through insertvalue/insertelement.
; RUN: opt < %s -passes='cgscc(coro-split),simplifycfg,early-cse' -S | FileCheck %s

define ptr @f(i1 %n) presplitcoroutine {
; CHECK-LABEL: define ptr @f(
; CHECK-SAME: i1 [[N:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*:]]
; CHECK-NEXT:    [[ID:%.*]] = call token @llvm.coro.id(i32 0, ptr null, ptr null, ptr @f.resumers)
; CHECK-NEXT:    [[MEM:%.*]] = call ptr @malloc(i32 56)
; CHECK-NEXT:    [[HDL:%.*]] = call noalias nonnull ptr @llvm.coro.begin(token [[ID]], ptr [[MEM]])
; CHECK-NEXT:    store ptr @f.resume, ptr [[HDL]], align 8
; CHECK-NEXT:    [[DESTROY_ADDR:%.*]] = getelementptr inbounds nuw [[F_FRAME:%.*]], ptr [[HDL]], i32 0, i32 1
; CHECK-NEXT:    store ptr @f.destroy, ptr [[DESTROY_ADDR]], align 8
; CHECK-NEXT:    [[X_RELOAD_ADDR:%.*]] = getelementptr inbounds [[F_FRAME]], ptr [[HDL]], i32 0, i32 2
; CHECK-NEXT:    [[ALIAS_SPILL_ADDR:%.*]] = getelementptr inbounds [[F_FRAME]], ptr [[HDL]], i32 0, i32 3
; CHECK-NEXT:    store i64 0, ptr [[X_RELOAD_ADDR]], align 4
; CHECK-NEXT:    store i64 0, ptr [[ALIAS_SPILL_ADDR]], align 4
; CHECK-NEXT:    [[X_ALIAS:%.*]] = insertvalue [1 x ptr] poison, ptr [[X_RELOAD_ADDR]], 0
; CHECK-NEXT:    [[X_ALIAS_SPILL_ADDR:%.*]] = getelementptr inbounds [[F_FRAME]], ptr [[HDL]], i32 0, i32 4
; CHECK-NEXT:    store [1 x ptr] [[X_ALIAS]], ptr [[X_ALIAS_SPILL_ADDR]], align 8
; CHECK-NEXT:    [[Y_ALIAS:%.*]] = insertelement <1 x ptr> poison, ptr [[ALIAS_SPILL_ADDR]], i32 0
; CHECK-NEXT:    [[Y_ALIAS_SPILL_ADDR:%.*]] = getelementptr inbounds [[F_FRAME]], ptr [[HDL]], i32 0, i32 5
; CHECK-NEXT:    store <1 x ptr> [[Y_ALIAS]], ptr [[Y_ALIAS_SPILL_ADDR]], align 8
; CHECK-NEXT:    [[INDEX_ADDR1:%.*]] = getelementptr inbounds nuw [[F_FRAME]], ptr [[HDL]], i32 0, i32 6
; CHECK-NEXT:    store i1 false, ptr [[INDEX_ADDR1]], align 1
; CHECK-NEXT:    ret ptr [[HDL]]
;
entry:
  %x = alloca i64
  %y = alloca i64
  %id = call token @llvm.coro.id(i32 0, ptr null, ptr null, ptr null)
  %size = call i32 @llvm.coro.size.i32()
  %mem = call ptr @malloc(i32 %size)
  %hdl = call ptr @llvm.coro.begin(token %id, ptr %mem)
  store i64 0, ptr %x
  store i64 0, ptr %y
  %x.alias = insertvalue [1 x ptr] poison, ptr %x, 0
  %y.alias = insertelement <1 x ptr> poison, ptr %y, i32 0
  %sp1 = call i8 @llvm.coro.suspend(token none, i1 false)
  switch i8 %sp1, label %suspend [i8 0, label %resume
  i8 1, label %cleanup]
resume:
  call void @use1([1 x ptr] %x.alias)
  call void @use2(<1 x ptr> %y.alias)
  br label %cleanup

cleanup:
  %mem1 = call ptr @llvm.coro.free(token %id, ptr %hdl)
  call void @free(ptr %mem1)
  br label %suspend

suspend:
  call void @llvm.coro.end(ptr %hdl, i1 0, token none)
  ret ptr %hdl
}

declare void @use1([1 x ptr])
declare void @use2(<1 x ptr>)
declare noalias ptr @malloc(i32)
declare void @free(ptr)