1; Tests the PHI nodes in cleanuppads for catchswitch instructions are correctly 2; split up. 3; RUN: opt < %s -passes='cgscc(coro-split),simplifycfg<switch-range-to-icmp>,early-cse' -S | FileCheck %s 4 5declare i32 @__CxxFrameHandler3(...) 6define ptr @f2(i1 %val) presplitcoroutine personality ptr @__CxxFrameHandler3 { 7entry: 8 %id = call token @llvm.coro.id(i32 0, ptr null, ptr null, ptr null) 9 %valueA = call i32 @f(); 10 %valueB = call i32 @f(); 11 %need.alloc = call i1 @llvm.coro.alloc(token %id) 12 br i1 %need.alloc, label %dyn.alloc, label %dowork.0 13 14dyn.alloc: 15 %size = call i32 @llvm.coro.size.i32() 16 %alloc = call ptr @malloc(i32 %size) 17 br label %dowork.0 18 19dowork.0: 20 %phi = phi ptr [ null, %entry ], [ %alloc, %dyn.alloc ] 21 %hdl = call ptr @llvm.coro.begin(token %id, ptr %phi) 22 invoke void @print(i32 0) 23 to label %checksuspend unwind label %catch.dispatch.1 24 25checksuspend: 26 %0 = call i8 @llvm.coro.suspend(token none, i1 false) 27 switch i8 %0, label %suspend [i8 0, label %dowork.1 28 i8 1, label %cleanup] 29 30dowork.1: 31 invoke void @print(i32 0) 32 to label %checksuspend unwind label %catch.dispatch.1 33 34cleanup: 35 %mem = call ptr @llvm.coro.free(token %id, ptr %hdl) 36 call void @free(ptr %mem) 37 br label %suspend 38 39suspend: 40 call i1 @llvm.coro.end(ptr %hdl, i1 0, token none) 41 ret ptr %hdl 42 43catch.dispatch.1: 44 %cs1 = catchswitch within none [label %handler1] unwind to caller 45handler1: 46 %h1 = catchpad within %cs1 [ptr null, i32 64, ptr null] 47 invoke void @print(i32 2) [ "funclet"(token %h1) ] 48 to label %catchret1 unwind label %catch.dispatch.2 49catchret1: 50 catchret from %h1 to label %cleanup 51 52catch.dispatch.2: 53 %cs2 = catchswitch within %h1 [label %handler2] unwind label %cleanup2 54handler2: 55 %h2 = catchpad within %cs2 [ptr null, i32 64, ptr null] 56 invoke void @print(i32 3) [ "funclet"(token %h2) ] 57 to label %cleanup unwind label %cleanup2 58cleanup2: 59 %cleanupval2 = phi i32 [%valueA, %catch.dispatch.2], [%valueB, %handler2] 60 cleanuppad within %h1 [] 61 call void @print(i32 %cleanupval2) 62 br label %cleanup 63 64; Verifiers that a "dispatcher" cleanuppad is created. 65 66; catchswitch and all associated catchpads are required to have the same unwind 67; edge, but coro requires that PHI nodes are split up so that reload 68; instructions can be generated, therefore we create a new "dispatcher" 69; cleanuppad which forwards to individual blocks that contain the reload 70; instructions per catchswitch/catchpad and then all branch back to the 71; original cleanuppad block. 72 73; CHECK: catch.dispatch.2: 74; CHECK: %cs2 = catchswitch within %h1 [label %handler2] unwind label %cleanup2.corodispatch 75 76; CHECK: handler2: 77; CHECK: invoke void @print(i32 3) 78; CHECK: to label %cleanup unwind label %cleanup2.corodispatch 79 80; CHECK: cleanup2.corodispatch: 81; CHECK: %1 = phi i8 [ 0, %handler2 ], [ 1, %catch.dispatch.2 ] 82; CHECK: %2 = cleanuppad within %h1 [] 83; CHECK: %switch = icmp ult i8 %1, 1 84; CHECK: br i1 %switch, label %cleanup2.from.handler2, label %cleanup2.from.catch.dispatch.2 85 86; CHECK: cleanup2.from.handler2: 87; CHECK: %valueB.reload = load i32, ptr %valueB.spill.addr, align 4 88; CHECK: br label %cleanup2 89 90; CHECK: cleanup2.from.catch.dispatch.2: 91; CHECK: %valueA.reload = load i32, ptr %valueA.spill.addr, align 4 92; CHECK: br label %cleanup2 93 94; CHECK: cleanup2: 95; CHECK: %cleanupval2 = phi i32 [ %valueA.reload, %cleanup2.from.catch.dispatch.2 ], [ %valueB.reload, %cleanup2.from.handler2 ] 96; CHECK: call void @print(i32 %cleanupval2) 97; CHECK: br label %cleanup 98} 99 100declare ptr @llvm.coro.free(token, ptr) 101declare i32 @llvm.coro.size.i32() 102declare i8 @llvm.coro.suspend(token, i1) 103declare void @llvm.coro.resume(ptr) 104declare void @llvm.coro.destroy(ptr) 105 106declare token @llvm.coro.id(i32, ptr, ptr, ptr) 107declare i1 @llvm.coro.alloc(token) 108declare ptr @llvm.coro.begin(token, ptr) 109declare i1 @llvm.coro.end(ptr, i1, token) 110 111declare noalias ptr @malloc(i32) 112declare void @print(i32) 113declare void @free(ptr) 114 115declare i32 @f() 116