1; RUN: opt < %s -O0 -S -mtriple=wasm32-unknown-unknown | FileCheck %s 2; REQUIRES: webassembly-registered-target 3 4%swift.async_func_pointer = type <{ i32, i32 }> 5@checkTu = global %swift.async_func_pointer <{ i32 ptrtoint (ptr @check to i32), i32 8 }> 6 7define swiftcc void @check(ptr %0) { 8entry: 9 %1 = call token @llvm.coro.id.async(i32 0, i32 0, i32 0, ptr @checkTu) 10 %2 = call ptr @llvm.coro.begin(token %1, ptr null) 11 %3 = call ptr @llvm.coro.async.resume() 12 store ptr %3, ptr %0, align 4 13 %4 = call { ptr, i32 } (i32, ptr, ptr, ...) @llvm.coro.suspend.async.sl_p0i32s(i32 0, ptr %3, ptr @__swift_async_resume_project_context, ptr @check.0, ptr null, ptr null) 14 ret void 15} 16 17declare swiftcc void @check.0() 18declare { ptr, i32 } @llvm.coro.suspend.async.sl_p0i32s(i32, ptr, ptr, ...) 19declare token @llvm.coro.id.async(i32, i32, i32, ptr) 20declare ptr @llvm.coro.begin(token, ptr writeonly) 21declare ptr @llvm.coro.async.resume() 22 23define ptr @__swift_async_resume_project_context(ptr %0) { 24entry: 25 ret ptr null 26} 27 28; Verify that the resume call is not marked as musttail. 29; CHECK-LABEL: define swiftcc void @check( 30; CHECK-NOT: musttail call swiftcc void @check.0() 31; CHECK: call swiftcc void @check.0() 32