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CGCleanup: (NFC) add another test for r304335 - Don't try to spill static allocas 

Summary:
Coroutine related test that used to trigger broken IR prior to r304335.

```
%x = alloca i32, align 4
store i32* %x, i32** %tmp.exprcleanup, align 4 ; <===== HERE
%ref.tmp3 = alloca %struct.A, align 1
%agg.tmp5 = alloca %"struct.std::experimental::coroutines_v1::coroutine_handle.0", align 4
%tmp.exprcleanup = alloca i32*, align 4
%allocapt = bitcast i32 undef to i32
store i32 %0, i32* %.addr, align 4
```

Fixed with r304335

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D33750

llvm-svn: 304380
This commit is contained in:
Gor Nishanov 2017-06-01 01:15:25 +00:00
parent ab194a26da
commit 050e79e958
1 changed files with 38 additions and 0 deletions
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38
clang/test/CodeGenCoroutines/coro-await-domination.cpp Normal file
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// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fcoroutines-ts -std=c++14 -emit-llvm %s -o - | FileCheck %s
#include "Inputs/coroutine.h"
using namespace std::experimental;
struct coro {
struct promise_type {
coro get_return_object();
suspend_never initial_suspend();
suspend_never final_suspend();
void return_void();
static void unhandled_exception();
};
};
struct A {
~A();
bool await_ready();
int await_resume() { return 8; }
template <typename F> void await_suspend(F);
};
extern "C" void consume(int);
// Verifies that domination is properly built during cleanup.
// Without CGCleanup.cpp fix verifier was reporting:
// Instruction does not dominate all uses!
// %tmp.exprcleanup = alloca i32*, align 8
// store i32* %x, i32** %tmp.exprcleanup, align 8
// CHECK-LABEL: f(
extern "C" coro f(int) {
int x = 42;
x = co_await A{};
consume(x);
}