| 1 | // -*- C++ -*- |
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| 2 | //===----------------------------------------------------------------------===// |
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| 3 | // |
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| 4 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 5 | // See https://llvm.org/LICENSE.txt for license information. |
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| 6 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 7 | // |
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| 8 | //===----------------------------------------------------------------------===// |
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| 9 | |
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| 10 | // REQUIRES: linux && target={{riscv64-.+}} |
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| 11 | |
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| 12 | #undef NDEBUG |
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| 13 | #include <assert.h> |
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| 14 | #include <libunwind.h> |
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| 15 | |
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| 16 | #ifdef __riscv_vector |
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| 17 | __attribute__((noinline)) extern "C" void stepper() { |
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| 18 | unw_cursor_t cursor; |
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| 19 | unw_context_t uc; |
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| 20 | unw_getcontext(&uc); |
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| 21 | unw_init_local(&cursor, &uc); |
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| 22 | // Stepping into foo() should succeed. |
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| 23 | assert(unw_step(&cursor) > 0); |
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| 24 | // Stepping past foo() should succeed, too. |
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| 25 | assert(unw_step(&cursor) > 0); |
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| 26 | } |
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| 27 | |
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| 28 | // Check correct unwinding of frame with VLENB-sized objects (vector registers). |
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| 29 | __attribute__((noinline)) static void foo() { |
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| 30 | __rvv_int32m1_t v; |
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| 31 | asm volatile("" : "=vr" (v)); // Dummy inline asm to def v. |
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| 32 | stepper(); // def-use of v has cross the function, so that |
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| 33 | // will triger spill/reload to/from the stack. |
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| 34 | asm volatile("" ::"vr" (v)); // Dummy inline asm to use v. |
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| 35 | } |
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| 36 | |
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| 37 | int main() { foo(); } |
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| 38 | #else |
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| 39 | int main() { return 0; } |
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| 40 | #endif |
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| 41 | |
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