| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; First example from Doc/Coroutines.rst (two block loop) converted to retcon |
| ; RUN: opt < %s -enable-coroutines -passes='default<O2>' -S | FileCheck %s |
| |
| define i8* @f(i8* %buffer, i32 %n) { |
| ; CHECK-LABEL: @f( |
| ; CHECK-NEXT: coro.return: |
| ; CHECK-NEXT: [[N_VAL_SPILL_ADDR:%.*]] = bitcast i8* [[BUFFER:%.*]] to i32* |
| ; CHECK-NEXT: store i32 [[N:%.*]], i32* [[N_VAL_SPILL_ADDR]], align 4 |
| ; CHECK-NEXT: tail call void @print(i32 [[N]]) |
| ; CHECK-NEXT: ret i8* bitcast (i8* (i8*, i1)* @f.resume.0 to i8*) |
| ; |
| entry: |
| %id = call token @llvm.coro.id.retcon(i32 8, i32 4, i8* %buffer, i8* bitcast (i8* (i8*, i1)* @prototype to i8*), i8* bitcast (i8* (i32)* @allocate to i8*), i8* bitcast (void (i8*)* @deallocate to i8*)) |
| %hdl = call i8* @llvm.coro.begin(token %id, i8* null) |
| br label %loop |
| |
| loop: |
| %n.val = phi i32 [ %n, %entry ], [ %inc, %resume ] |
| call void @print(i32 %n.val) |
| %unwind0 = call i1 (...) @llvm.coro.suspend.retcon.i1() |
| br i1 %unwind0, label %cleanup, label %resume |
| |
| resume: |
| %inc = add i32 %n.val, 1 |
| br label %loop |
| |
| cleanup: |
| call i1 @llvm.coro.end(i8* %hdl, i1 0) |
| unreachable |
| } |
| |
| |
| |
| define i32 @main() { |
| ; CHECK-LABEL: @main( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[TMP0:%.*]] = alloca [8 x i8], align 4 |
| ; CHECK-NEXT: [[DOTSUB:%.*]] = getelementptr inbounds [8 x i8], [8 x i8]* [[TMP0]], i64 0, i64 0 |
| ; CHECK-NEXT: [[N_VAL_SPILL_ADDR_I:%.*]] = bitcast [8 x i8]* [[TMP0]] to i32* |
| ; CHECK-NEXT: store i32 4, i32* [[N_VAL_SPILL_ADDR_I]], align 4 |
| ; CHECK-NEXT: call void @print(i32 4) |
| ; CHECK-NEXT: call void @llvm.experimental.noalias.scope.decl(metadata [[META0:![0-9]+]]) |
| ; CHECK-NEXT: [[N_VAL_RELOAD_I:%.*]] = load i32, i32* [[N_VAL_SPILL_ADDR_I]], align 4, !alias.scope !0 |
| ; CHECK-NEXT: [[INC_I:%.*]] = add i32 [[N_VAL_RELOAD_I]], 1 |
| ; CHECK-NEXT: store i32 [[INC_I]], i32* [[N_VAL_SPILL_ADDR_I]], align 4, !alias.scope !0 |
| ; CHECK-NEXT: call void @print(i32 [[INC_I]]), !noalias !0 |
| ; CHECK-NEXT: call void @llvm.experimental.noalias.scope.decl(metadata [[META3:![0-9]+]]) |
| ; CHECK-NEXT: [[N_VAL_RELOAD_I3:%.*]] = load i32, i32* [[N_VAL_SPILL_ADDR_I]], align 4, !alias.scope !3 |
| ; CHECK-NEXT: [[INC_I4:%.*]] = add i32 [[N_VAL_RELOAD_I3]], 1 |
| ; CHECK-NEXT: call void @print(i32 [[INC_I4]]), !noalias !3 |
| ; CHECK-NEXT: ret i32 0 |
| ; |
| entry: |
| %0 = alloca [8 x i8], align 4 |
| %buffer = bitcast [8 x i8]* %0 to i8* |
| %prepare = call i8* @llvm.coro.prepare.retcon(i8* bitcast (i8* (i8*, i32)* @f to i8*)) |
| %f = bitcast i8* %prepare to i8* (i8*, i32)* |
| %cont0 = call i8* %f(i8* %buffer, i32 4) |
| %cont0.cast = bitcast i8* %cont0 to i8* (i8*, i1)* |
| %cont1 = call i8* %cont0.cast(i8* %buffer, i1 zeroext false) |
| %cont1.cast = bitcast i8* %cont1 to i8* (i8*, i1)* |
| %cont2 = call i8* %cont1.cast(i8* %buffer, i1 zeroext false) |
| %cont2.cast = bitcast i8* %cont2 to i8* (i8*, i1)* |
| call i8* %cont2.cast(i8* %buffer, i1 zeroext true) |
| ret i32 0 |
| } |
| |
| ; Unfortunately, we don't seem to fully optimize this right now due |
| ; to some sort of phase-ordering thing. |
| |
| define hidden { i8*, i8* } @g(i8* %buffer, i16* %ptr) { |
| ; CHECK-LABEL: @g( |
| ; CHECK-NEXT: coro.return: |
| ; CHECK-NEXT: [[TMP0:%.*]] = tail call i8* @allocate(i32 8) |
| ; CHECK-NEXT: [[TMP1:%.*]] = bitcast i8* [[BUFFER:%.*]] to i8** |
| ; CHECK-NEXT: store i8* [[TMP0]], i8** [[TMP1]], align 8 |
| ; CHECK-NEXT: [[PTR_SPILL_ADDR:%.*]] = bitcast i8* [[TMP0]] to i16** |
| ; CHECK-NEXT: store i16* [[PTR:%.*]], i16** [[PTR_SPILL_ADDR]], align 8 |
| ; CHECK-NEXT: [[TMP2:%.*]] = bitcast i16* [[PTR]] to i8* |
| ; CHECK-NEXT: [[TMP3:%.*]] = insertvalue { i8*, i8* } { i8* bitcast ({ i8*, i8* } (i8*, i1)* @g.resume.0 to i8*), i8* undef }, i8* [[TMP2]], 1 |
| ; CHECK-NEXT: ret { i8*, i8* } [[TMP3]] |
| ; |
| entry: |
| %id = call token @llvm.coro.id.retcon(i32 8, i32 4, i8* %buffer, i8* bitcast ({ i8*, i8* } (i8*, i1)* @g_prototype to i8*), i8* bitcast (i8* (i32)* @allocate to i8*), i8* bitcast (void (i8*)* @deallocate to i8*)) |
| %hdl = call i8* @llvm.coro.begin(token %id, i8* null) |
| br label %loop |
| |
| loop: |
| %ptr2 = bitcast i16* %ptr to i8* |
| %unwind0 = call i1 (...) @llvm.coro.suspend.retcon.i1(i8* %ptr2) |
| br i1 %unwind0, label %cleanup, label %resume |
| |
| resume: |
| br label %loop |
| |
| cleanup: |
| call i1 @llvm.coro.end(i8* %hdl, i1 0) |
| unreachable |
| } |
| |
| declare token @llvm.coro.id.retcon(i32, i32, i8*, i8*, i8*, i8*) |
| declare i8* @llvm.coro.begin(token, i8*) |
| declare i1 @llvm.coro.suspend.retcon.i1(...) |
| declare i1 @llvm.coro.end(i8*, i1) |
| declare i8* @llvm.coro.prepare.retcon(i8*) |
| |
| declare i8* @prototype(i8*, i1 zeroext) |
| declare {i8*,i8*} @g_prototype(i8*, i1 zeroext) |
| |
| declare noalias i8* @allocate(i32 %size) |
| declare void @deallocate(i8* %ptr) |
| |
| declare void @print(i32) |