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1; Tests that coro-split will convert coro.await.suspend.handle to a musttail call if the target is2; Wasm64 or Wasm32 with tail-call support.3; REQUIRES: webassembly-registered-target4 5; RUN: opt -mtriple=wasm64-unknown-unknown < %s -passes='cgscc(coro-split),simplifycfg,early-cse' -S | FileCheck %s6; RUN: opt -mtriple=wasm64-unknown-unknown < %s -passes='pgo-instr-gen,cgscc(coro-split),simplifycfg,early-cse' -S | FileCheck %s7 8; RUN: opt -mtriple=wasm32-unknown-unknown < %s -passes='cgscc(coro-split),simplifycfg,early-cse' -S | FileCheck %s9; RUN: opt -mtriple=wasm32-unknown-unknown < %s -passes='pgo-instr-gen,cgscc(coro-split),simplifycfg,early-cse' -S | FileCheck %s10 11define void @f() #0 {12entry:13 %id = call token @llvm.coro.id(i32 0, ptr null, ptr null, ptr null)14 %alloc = call ptr @malloc(i64 16) #315 %vFrame = call noalias nonnull ptr @llvm.coro.begin(token %id, ptr %alloc)16 17 %save = call token @llvm.coro.save(ptr null)18 %addr1 = call ptr @llvm.coro.subfn.addr(ptr null, i8 0)19 call fastcc void %addr1(ptr null)20 21 %suspend = call i8 @llvm.coro.suspend(token %save, i1 false)22 switch i8 %suspend, label %exit [23 i8 0, label %await.ready24 i8 1, label %exit25 ]26await.ready:27 %save2 = call token @llvm.coro.save(ptr null)28 call void @llvm.coro.await.suspend.handle(ptr null, ptr null, ptr @await_suspend_function)29 30 %suspend2 = call i8 @llvm.coro.suspend(token %save2, i1 false)31 switch i8 %suspend2, label %exit [32 i8 0, label %exit33 i8 1, label %exit34 ]35exit:36 call void @llvm.coro.end(ptr null, i1 false, token none)37 ret void38}39 40; CHECK: musttail call41 42declare token @llvm.coro.id(i32, ptr readnone, ptr nocapture readonly, ptr) #143declare i1 @llvm.coro.alloc(token) #244declare i64 @llvm.coro.size.i64() #345declare ptr @llvm.coro.begin(token, ptr writeonly) #246declare token @llvm.coro.save(ptr) #247declare ptr @llvm.coro.frame() #348declare i8 @llvm.coro.suspend(token, i1) #249declare ptr @llvm.coro.free(token, ptr nocapture readonly) #150declare void @llvm.coro.end(ptr, i1, token) #251declare ptr @llvm.coro.subfn.addr(ptr nocapture readonly, i8) #152declare ptr @malloc(i64)53declare ptr @await_suspend_function(ptr %awaiter, ptr %hdl)54 55attributes #0 = { presplitcoroutine "target-features"="+tail-call" }56attributes #1 = { argmemonly nounwind readonly }57attributes #2 = { nounwind }58attributes #3 = { nounwind readnone }59