| 1 | //===----------------------------------------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | // Check that the condition register is restored properly during unwinding |
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| 10 | // on AIX. Option -O3 is required so that the compiler will re-use the value |
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| 11 | // in the condition register instead of re-evaluating the condition expression. |
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| 12 | |
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| 13 | // REQUIRES: target={{.+}}-aix{{.*}} |
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| 14 | // ADDITIONAL_COMPILE_FLAGS: -O3 |
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| 15 | // UNSUPPORTED: no-exceptions |
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| 16 | |
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| 17 | #include <cstdlib> |
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| 18 | #include <cassert> |
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| 19 | |
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| 20 | int __attribute__((noinline)) test2(int i) { |
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| 21 | // The inline assembly forces the prologue/epilogue to save/restore the |
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| 22 | // condition register. |
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| 23 | asm volatile("nop" : : : "cr2" ); |
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| 24 | if (i > 3) { |
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| 25 | throw i; |
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| 26 | } |
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| 27 | srand(seed: i); |
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| 28 | return rand() + i; |
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| 29 | } |
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| 30 | |
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| 31 | void __attribute__((noinline)) test(int argc, const char **argv) { |
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| 32 | int a = atoi(nptr: argv[1]); |
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| 33 | int b = atoi(nptr: argv[2]); |
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| 34 | try { |
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| 35 | test2(i: a < b ? argc : b); |
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| 36 | } catch (int num) { |
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| 37 | assert(!(a < b)); |
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| 38 | } |
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| 39 | } |
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| 40 | int main(int, char**) { |
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| 41 | const char *av[]={"a.out" , "12" , "10" }; |
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| 42 | test(argc: 4, argv: av); |
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| 43 | return 0; |
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| 44 | } |
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| 45 | |
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