94473f4db6
Generate nuw GEPs for struct member accesses, as inbounds + non-negative implies nuw. Regression tests are updated using update scripts where possible, and by find + replace where not.
76 lines
2.6 KiB
LLVM
76 lines
2.6 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 ptr @f(i32 %n) presplitcoroutine {
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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, ptr null, ptr null, ptr @f.resumers)
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; CHECK-NEXT: [[N_ADDR:%.*]] = alloca i32, align 4
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; CHECK-NEXT: store i32 [[N:%.*]], ptr [[N_ADDR]], align 4
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; CHECK-NEXT: [[CALL:%.*]] = tail call ptr @malloc(i32 24)
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; CHECK-NEXT: [[TMP0:%.*]] = tail call noalias nonnull ptr @llvm.coro.begin(token [[ID]], ptr [[CALL]])
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; CHECK-NEXT: store ptr @f.resume, ptr [[TMP0]], align 8
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; CHECK-NEXT: [[DESTROY_ADDR:%.*]] = getelementptr inbounds nuw [[F_FRAME:%.*]], ptr [[TMP0]], i32 0, i32 1
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; CHECK-NEXT: store ptr @f.destroy, ptr [[DESTROY_ADDR]], align 8
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; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds [[F_FRAME]], ptr [[TMP0]], i32 0, i32 2
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; CHECK-NEXT: [[TMP2:%.*]] = load i32, ptr [[N_ADDR]], align 4
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; CHECK-NEXT: store i32 [[TMP2]], ptr [[TMP1]], align 4
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;
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entry:
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%id = call token @llvm.coro.id(i32 0, ptr null, ptr null, ptr null);
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%n.addr = alloca i32
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store i32 %n, ptr %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 ptr @malloc(i32 %0)
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%1 = tail call noalias nonnull ptr @llvm.coro.begin(token %id, ptr %call)
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call void @ctor(ptr %n.addr)
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br label %for.cond
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for.cond:
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%2 = load i32, ptr %n.addr
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%dec = add nsw i32 %2, -1
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store i32 %dec, ptr %n.addr
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call void @print(i32 %2)
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%3 = call i8 @llvm.coro.suspend(token none, i1 false)
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%conv = sext i8 %3 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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%4 = call ptr @llvm.coro.free(token %id, ptr nonnull %1)
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call void @free(ptr %4)
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br label %coro_Suspend
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coro_Suspend:
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call i1 @llvm.coro.end(ptr null, i1 false, token none)
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ret ptr %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 ptr @f(i32 4)
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call void @llvm.coro.resume(ptr %hdl)
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call void @llvm.coro.resume(ptr %hdl)
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call void @llvm.coro.destroy(ptr %hdl)
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ret i32 0
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}
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declare ptr @malloc(i32)
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declare void @free(ptr)
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declare void @print(i32)
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declare void @ctor(ptr nocapture readonly)
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declare token @llvm.coro.id(i32, ptr, ptr, ptr)
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declare i32 @llvm.coro.size.i32()
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declare ptr @llvm.coro.begin(token, ptr)
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declare i8 @llvm.coro.suspend(token, i1)
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declare ptr @llvm.coro.free(token, ptr)
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declare i1 @llvm.coro.end(ptr, i1, token)
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declare void @llvm.coro.resume(ptr)
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declare void @llvm.coro.destroy(ptr)
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