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| author | Craig Topper <craig.topper@intel.com> | 2019-09-09 17:48:05 +0000 |
|---|---|---|
| committer | Craig Topper <craig.topper@intel.com> | 2019-09-09 17:48:05 +0000 |
| commit | be0512174749830dec1b57e24e139514279cb30e (patch) | |
| tree | c3ee85d2e0ed8c8c415021a1669c0ffb5ebdec90 /test/Sema | |
| parent | df4be6a74738a169cea26d97ef2fb0cf2e546413 (diff) | |
| download | clang-be0512174749830dec1b57e24e139514279cb30e.tar.gz | |
[X86] Allow _MM_FROUND_CUR_DIRECTION and _MM_FROUND_NO_EXC to be used together on instructions that only support SAE and not embedded rounding.
Current for SAE instructions we only allow _MM_FROUND_CUR_DIRECTION(bit 2) or _MM_FROUND_NO_EXC(bit 3) to be used as the immediate passed to the inrinsics. But these instructions don't perform rounding so _MM_FROUND_CUR_DIRECTION is just sort of a default placeholder when you don't want to suppress exceptions. Using _MM_FROUND_NO_EXC by itself is really bit equivalent to (_MM_FROUND_NO_EXC | _MM_FROUND_TO_NEAREST_INT) since _MM_FROUND_TO_NEAREST_INT is 0. Since we aren't rounding on these instructions we should also accept (_MM_FROUND_CUR_DIRECTION | _MM_FROUND_NO_EXC) as equivalent to (_MM_FROUND_NO_EXC). icc allows this, but gcc does not.
Differential Revision: https://reviews.llvm.org/D67289
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@371430 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Sema')
| -rw-r--r-- | test/Sema/builtins-x86.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/test/Sema/builtins-x86.c b/test/Sema/builtins-x86.c index 6a2a47d779..dca0bdc720 100644 --- a/test/Sema/builtins-x86.c +++ b/test/Sema/builtins-x86.c @@ -81,6 +81,19 @@ __mmask16 test__builtin_ia32_cmpps512_mask_rounding(__m512 __a, __m512 __b, __mm return __builtin_ia32_cmpps512_mask(__a, __b, 0, __u, 0); // expected-error {{invalid rounding argument}} } +// Make sure we allow 4(CUR_DIRECTION), 8(NO_EXC), and 12(CUR_DIRECTION|NOEXC) for SAE arguments. +__mmask16 test__builtin_ia32_cmpps512_mask_rounding_cur_dir(__m512 __a, __m512 __b, __mmask16 __u) { + return __builtin_ia32_cmpps512_mask(__a, __b, 0, __u, 4); // no-error +} + +__mmask16 test__builtin_ia32_cmpps512_mask_rounding_sae1(__m512 __a, __m512 __b, __mmask16 __u) { + return __builtin_ia32_cmpps512_mask(__a, __b, 0, __u, 8); // no-error +} + +__mmask16 test__builtin_ia32_cmpps512_mask_rounding_sae2(__m512 __a, __m512 __b, __mmask16 __u) { + return __builtin_ia32_cmpps512_mask(__a, __b, 0, __u, 12); // no-error +} + __m512 test__builtin_ia32_getmantps512_mask(__m512 a, __m512 b) { return __builtin_ia32_getmantps512_mask(a, 0, b, (__mmask16)-1, 10); // expected-error {{invalid rounding argument}} } |