forked from OSchip/llvm-project
79 lines
2.9 KiB
LLVM
79 lines
2.9 KiB
LLVM
; Need to move users of allocas that were moved into the coroutine frame after
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; coro.begin.
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; RUN: opt < %s -passes='cgscc(coro-split),simplifycfg,early-cse' -S | FileCheck %s
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define nonnull i8* @f(i32 %n) "coroutine.presplit"="1" {
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; CHECK-LABEL: @f(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[ID:%.*]] = call token @llvm.coro.id(i32 0, i8* null, i8* null, i8* bitcast ([3 x void (%f.Frame*)*]* @f.resumers to i8*))
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; CHECK-NEXT: [[N_ADDR:%.*]] = alloca i32, align 4
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; CHECK-NEXT: store i32 [[N:%.*]], i32* [[N_ADDR]], align 4
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; CHECK-NEXT: [[CALL:%.*]] = tail call i8* @malloc(i32 24)
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; CHECK-NEXT: [[TMP0:%.*]] = tail call noalias nonnull i8* @llvm.coro.begin(token [[ID]], i8* [[CALL]])
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; CHECK-NEXT: [[FRAMEPTR:%.*]] = bitcast i8* [[TMP0]] to %f.Frame*
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; CHECK-NEXT: [[RESUME_ADDR:%.*]] = getelementptr inbounds [[F_FRAME:%.*]], %f.Frame* [[FRAMEPTR]], i32 0, i32 0
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; CHECK-NEXT: store void (%f.Frame*)* @f.resume, void (%f.Frame*)** [[RESUME_ADDR]], align 8
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; CHECK-NEXT: [[DESTROY_ADDR:%.*]] = getelementptr inbounds [[F_FRAME]], %f.Frame* [[FRAMEPTR]], i32 0, i32 1
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; CHECK-NEXT: store void (%f.Frame*)* @f.destroy, void (%f.Frame*)** [[DESTROY_ADDR]], align 8
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; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds [[F_FRAME]], %f.Frame* [[FRAMEPTR]], i32 0, i32 2
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; CHECK-NEXT: [[TMP2:%.*]] = load i32, i32* [[N_ADDR]], align 4
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; CHECK-NEXT: store i32 [[TMP2]], i32* [[TMP1]], align 4
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;
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entry:
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%id = call token @llvm.coro.id(i32 0, i8* null, i8* null, i8* null);
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%n.addr = alloca i32
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store i32 %n, i32* %n.addr ; this needs to go after coro.begin
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%0 = tail call i32 @llvm.coro.size.i32()
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%call = tail call i8* @malloc(i32 %0)
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%1 = tail call noalias nonnull i8* @llvm.coro.begin(token %id, i8* %call)
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%2 = bitcast i32* %n.addr to i8*
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call void @ctor(i8* %2)
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br label %for.cond
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for.cond:
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%3 = load i32, i32* %n.addr
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%dec = add nsw i32 %3, -1
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store i32 %dec, i32* %n.addr
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call void @print(i32 %3)
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%4 = call i8 @llvm.coro.suspend(token none, i1 false)
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%conv = sext i8 %4 to i32
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switch i32 %conv, label %coro_Suspend [
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i32 0, label %for.cond
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i32 1, label %coro_Cleanup
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]
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coro_Cleanup:
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%5 = call i8* @llvm.coro.free(token %id, i8* nonnull %1)
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call void @free(i8* %5)
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br label %coro_Suspend
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coro_Suspend:
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call i1 @llvm.coro.end(i8* null, i1 false)
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ret i8* %1
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}
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; CHECK-LABEL: @main
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define i32 @main() {
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entry:
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%hdl = call i8* @f(i32 4)
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call void @llvm.coro.resume(i8* %hdl)
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call void @llvm.coro.resume(i8* %hdl)
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call void @llvm.coro.destroy(i8* %hdl)
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ret i32 0
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}
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declare i8* @malloc(i32)
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declare void @free(i8*)
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declare void @print(i32)
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declare void @ctor(i8* nocapture readonly)
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declare token @llvm.coro.id(i32, i8*, i8*, i8*)
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declare i32 @llvm.coro.size.i32()
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declare i8* @llvm.coro.begin(token, i8*)
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declare i8 @llvm.coro.suspend(token, i1)
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declare i8* @llvm.coro.free(token, i8*)
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declare i1 @llvm.coro.end(i8*, i1)
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declare void @llvm.coro.resume(i8*)
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declare void @llvm.coro.destroy(i8*)
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