ArgAddr.ll
2.07 KB
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; Need to move users of allocas that were moved into the coroutine frame after
; coro.begin.
; RUN: opt < %s -preserve-alignment-assumptions-during-inlining=false -O2 -enable-coroutines -S | FileCheck %s
; RUN: opt < %s -preserve-alignment-assumptions-during-inlining=false -aa-pipeline=basic-aa -passes='default<O2>' -enable-coroutines -S | FileCheck %s
define nonnull i8* @f(i32 %n) {
entry:
%id = call token @llvm.coro.id(i32 0, i8* null, i8* null, i8* null);
%n.addr = alloca i32
store i32 %n, i32* %n.addr ; this needs to go after coro.begin
%0 = tail call i32 @llvm.coro.size.i32()
%call = tail call i8* @malloc(i32 %0)
%1 = tail call noalias nonnull i8* @llvm.coro.begin(token %id, i8* %call)
%2 = bitcast i32* %n.addr to i8*
call void @ctor(i8* %2)
br label %for.cond
for.cond:
%3 = load i32, i32* %n.addr
%dec = add nsw i32 %3, -1
store i32 %dec, i32* %n.addr
call void @print(i32 %3)
%4 = call i8 @llvm.coro.suspend(token none, i1 false)
%conv = sext i8 %4 to i32
switch i32 %conv, label %coro_Suspend [
i32 0, label %for.cond
i32 1, label %coro_Cleanup
]
coro_Cleanup:
%5 = call i8* @llvm.coro.free(token %id, i8* nonnull %1)
call void @free(i8* %5)
br label %coro_Suspend
coro_Suspend:
call i1 @llvm.coro.end(i8* null, i1 false)
ret i8* %1
}
; CHECK-LABEL: @main
define i32 @main() {
entry:
%hdl = call i8* @f(i32 4)
call void @llvm.coro.resume(i8* %hdl)
call void @llvm.coro.resume(i8* %hdl)
call void @llvm.coro.destroy(i8* %hdl)
ret i32 0
; CHECK: call void @ctor
; CHECK-NEXT: call void @print(i32 4)
; CHECK-NEXT: call void @print(i32 3)
; CHECK-NEXT: call void @print(i32 2)
; CHECK: ret i32 0
}
declare i8* @malloc(i32)
declare void @free(i8*)
declare void @print(i32)
declare void @ctor(i8* nocapture readonly)
declare token @llvm.coro.id(i32, i8*, i8*, i8*)
declare i32 @llvm.coro.size.i32()
declare i8* @llvm.coro.begin(token, i8*)
declare i8 @llvm.coro.suspend(token, i1)
declare i8* @llvm.coro.free(token, i8*)
declare i1 @llvm.coro.end(i8*, i1)
declare void @llvm.coro.resume(i8*)
declare void @llvm.coro.destroy(i8*)