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[X86] Fix implicit sign conversion warnings in X86 headers.

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Warnings in emmintrin.h and xmmintrin.h are reported by
-fsanitize=implicit-integer-sign-change.

Reviewed By: RKSimon, craig.topper

Differential Revision: https://reviews.llvm.org/D77393
This commit is contained in:
Pierre Gousseau 2020-04-03 14:43:38 +01:00
parent 7023f4b4cb
commit 08fab9ebec
3 changed files with 68 additions and 25 deletions
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6
clang/lib/Headers/emmintrin.h
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@ -4970,10 +4970,10 @@ void _mm_pause(void);
#define _MM_SHUFFLE2(x, y) (((x) << 1) | (y))
#define _MM_DENORMALS_ZERO_ON (0x0040)
#define _MM_DENORMALS_ZERO_OFF (0x0000)
#define _MM_DENORMALS_ZERO_ON (0x0040U)
#define _MM_DENORMALS_ZERO_OFF (0x0000U)
#define _MM_DENORMALS_ZERO_MASK (0x0040)
#define _MM_DENORMALS_ZERO_MASK (0x0040U)
#define _MM_GET_DENORMALS_ZERO_MODE() (_mm_getcsr() & _MM_DENORMALS_ZERO_MASK)
#define _MM_SET_DENORMALS_ZERO_MODE(x) (_mm_setcsr((_mm_getcsr() & ~_MM_DENORMALS_ZERO_MASK) | (x)))

44
clang/lib/Headers/xmmintrin.h
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@ -2931,31 +2931,31 @@ _mm_movemask_ps(__m128 __a)
#define _MM_SHUFFLE(z, y, x, w) (((z) << 6) | ((y) << 4) | ((x) << 2) | (w))
#define _MM_EXCEPT_INVALID (0x0001)
#define _MM_EXCEPT_DENORM (0x0002)
#define _MM_EXCEPT_DIV_ZERO (0x0004)
#define _MM_EXCEPT_OVERFLOW (0x0008)
#define _MM_EXCEPT_UNDERFLOW (0x0010)
#define _MM_EXCEPT_INEXACT (0x0020)
#define _MM_EXCEPT_MASK (0x003f)
#define _MM_EXCEPT_INVALID (0x0001U)
#define _MM_EXCEPT_DENORM (0x0002U)
#define _MM_EXCEPT_DIV_ZERO (0x0004U)
#define _MM_EXCEPT_OVERFLOW (0x0008U)
#define _MM_EXCEPT_UNDERFLOW (0x0010U)
#define _MM_EXCEPT_INEXACT (0x0020U)
#define _MM_EXCEPT_MASK (0x003fU)
#define _MM_MASK_INVALID (0x0080)
#define _MM_MASK_DENORM (0x0100)
#define _MM_MASK_DIV_ZERO (0x0200)
#define _MM_MASK_OVERFLOW (0x0400)
#define _MM_MASK_UNDERFLOW (0x0800)
#define _MM_MASK_INEXACT (0x1000)
#define _MM_MASK_MASK (0x1f80)
#define _MM_MASK_INVALID (0x0080U)
#define _MM_MASK_DENORM (0x0100U)
#define _MM_MASK_DIV_ZERO (0x0200U)
#define _MM_MASK_OVERFLOW (0x0400U)
#define _MM_MASK_UNDERFLOW (0x0800U)
#define _MM_MASK_INEXACT (0x1000U)
#define _MM_MASK_MASK (0x1f80U)
#define _MM_ROUND_NEAREST (0x0000)
#define _MM_ROUND_DOWN (0x2000)
#define _MM_ROUND_UP (0x4000)
#define _MM_ROUND_TOWARD_ZERO (0x6000)
#define _MM_ROUND_MASK (0x6000)
#define _MM_ROUND_NEAREST (0x0000U)
#define _MM_ROUND_DOWN (0x2000U)
#define _MM_ROUND_UP (0x4000U)
#define _MM_ROUND_TOWARD_ZERO (0x6000U)
#define _MM_ROUND_MASK (0x6000U)
#define _MM_FLUSH_ZERO_MASK (0x8000)
#define _MM_FLUSH_ZERO_ON (0x8000)
#define _MM_FLUSH_ZERO_OFF (0x0000)
#define _MM_FLUSH_ZERO_MASK (0x8000U)
#define _MM_FLUSH_ZERO_ON (0x8000U)
#define _MM_FLUSH_ZERO_OFF (0x0000U)
#define _MM_GET_EXCEPTION_MASK() (_mm_getcsr() & _MM_MASK_MASK)
#define _MM_GET_EXCEPTION_STATE() (_mm_getcsr() & _MM_EXCEPT_MASK)

43
clang/test/Headers/x86-header-warnings.c Normal file
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@ -0,0 +1,43 @@
// Fix sign conversion warnings found by fsanitize=implicit-integer-sign-change
// in intrinsic headers.
// Preprocess file to workaround no warnings in system headers.
// RUN: %clang_cc1 %s -triple x86_64-pc-linux-gnu -ffreestanding -E 2>&1 \
// RUN: | %clang_cc1 -x c - -triple x86_64-pc-linux-gnu -ffreestanding -Wsign-conversion -E -o - 2>&1 \
// RUN: | FileCheck --allow-empty %s
// REQUIRES: x86-registered-target
#include <x86intrin.h>
void test0() {
// CHECK-LABEL: test0
// CHECK-NOT: warning:
_MM_SET_DENORMALS_ZERO_MODE(_MM_DENORMALS_ZERO_ON);
_MM_SET_DENORMALS_ZERO_MODE(_MM_DENORMALS_ZERO_OFF);
_MM_SET_DENORMALS_ZERO_MODE(_MM_DENORMALS_ZERO_MASK);
_MM_SET_EXCEPTION_STATE(_MM_EXCEPT_INVALID);
_MM_SET_EXCEPTION_STATE(_MM_EXCEPT_DENORM);
_MM_SET_EXCEPTION_STATE(_MM_EXCEPT_DIV_ZERO);
_MM_SET_EXCEPTION_STATE(_MM_EXCEPT_OVERFLOW);
_MM_SET_EXCEPTION_STATE(_MM_EXCEPT_UNDERFLOW);
_MM_SET_EXCEPTION_STATE(_MM_EXCEPT_INEXACT);
_MM_SET_EXCEPTION_STATE(_MM_EXCEPT_MASK);
_MM_SET_EXCEPTION_MASK(_MM_MASK_INVALID);
_MM_SET_EXCEPTION_MASK(_MM_MASK_DENORM);
_MM_SET_EXCEPTION_MASK(_MM_MASK_DIV_ZERO);
_MM_SET_EXCEPTION_MASK(_MM_MASK_OVERFLOW);
_MM_SET_EXCEPTION_MASK(_MM_MASK_UNDERFLOW);
_MM_SET_EXCEPTION_MASK(_MM_MASK_INEXACT);
_MM_SET_EXCEPTION_MASK(_MM_MASK_MASK);
_MM_SET_ROUNDING_MODE(_MM_ROUND_NEAREST);
_MM_SET_ROUNDING_MODE(_MM_ROUND_DOWN);
_MM_SET_ROUNDING_MODE(_MM_ROUND_UP);
_MM_SET_ROUNDING_MODE(_MM_ROUND_TOWARD_ZERO);
_MM_SET_ROUNDING_MODE(_MM_ROUND_MASK);
_MM_SET_FLUSH_ZERO_MODE(_MM_FLUSH_ZERO_MASK);
_MM_SET_FLUSH_ZERO_MODE(_MM_FLUSH_ZERO_ON);
_MM_SET_FLUSH_ZERO_MODE(_MM_FLUSH_ZERO_OFF);
}