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; Need to move users of allocas that were moved into the coroutine frame after
; coro.begin.
; RUN: opt < %s -passes='cgscc(coro-split),simplifycfg,early-cse' -S | FileCheck %s
define nonnull ptr @f(i32 %n) presplitcoroutine {
; CHECK-LABEL: @f(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[ID:%.*]] = call token @llvm.coro.id(i32 0, ptr null, ptr null, ptr @f.resumers)
; CHECK-NEXT: [[N_ADDR:%.*]] = alloca i32, align 4
; CHECK-NEXT: store i32 [[N:%.*]], ptr [[N_ADDR]], align 4
; CHECK-NEXT: [[CALL:%.*]] = tail call ptr @malloc(i32 24)
; CHECK-NEXT: [[TMP0:%.*]] = tail call noalias nonnull ptr @llvm.coro.begin(token [[ID]], ptr [[CALL]])
; CHECK-NEXT: store ptr @f.resume, ptr [[TMP0]], align 8
; CHECK-NEXT: [[DESTROY_ADDR:%.*]] = getelementptr inbounds [[F_FRAME:%.*]], ptr [[TMP0]], i32 0, i32 1
; CHECK-NEXT: store ptr @f.destroy, ptr [[DESTROY_ADDR]], align 8
; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds [[F_FRAME]], ptr [[TMP0]], i32 0, i32 2
; CHECK-NEXT: [[TMP2:%.*]] = load i32, ptr [[N_ADDR]], align 4
; CHECK-NEXT: store i32 [[TMP2]], ptr [[TMP1]], align 4
;
entry:
%id = call token @llvm.coro.id(i32 0, ptr null, ptr null, ptr null);
%n.addr = alloca i32
store i32 %n, ptr %n.addr ; this needs to go after coro.begin
%0 = tail call i32 @llvm.coro.size.i32()
%call = tail call ptr @malloc(i32 %0)
%1 = tail call noalias nonnull ptr @llvm.coro.begin(token %id, ptr %call)
call void @ctor(ptr %n.addr)
br label %for.cond
for.cond:
%2 = load i32, ptr %n.addr
%dec = add nsw i32 %2, -1
store i32 %dec, ptr %n.addr
call void @print(i32 %2)
%3 = call i8 @llvm.coro.suspend(token none, i1 false)
%conv = sext i8 %3 to i32
switch i32 %conv, label %coro_Suspend [
i32 0, label %for.cond
i32 1, label %coro_Cleanup
]
coro_Cleanup:
%4 = call ptr @llvm.coro.free(token %id, ptr nonnull %1)
call void @free(ptr %4)
br label %coro_Suspend
coro_Suspend:
call i1 @llvm.coro.end(ptr null, i1 false, token none)
ret ptr %1
}
; CHECK-LABEL: @main
define i32 @main() {
entry:
%hdl = call ptr @f(i32 4)
call void @llvm.coro.resume(ptr %hdl)
call void @llvm.coro.resume(ptr %hdl)
call void @llvm.coro.destroy(ptr %hdl)
ret i32 0
}
declare ptr @malloc(i32)
declare void @free(ptr)
declare void @print(i32)
declare void @ctor(ptr nocapture readonly)
declare token @llvm.coro.id(i32, ptr, ptr, ptr)
declare i32 @llvm.coro.size.i32()
declare ptr @llvm.coro.begin(token, ptr)
declare i8 @llvm.coro.suspend(token, i1)
declare ptr @llvm.coro.free(token, ptr)
declare i1 @llvm.coro.end(ptr, i1, token)
declare void @llvm.coro.resume(ptr)
declare void @llvm.coro.destroy(ptr)
|
