5be7eb3ab4
Summary: If a platform removes some builtin implementations (e.g. via the Darwin-excludes mechanism) then this can lead to test failures because the test expects an implementation to be available. To solve this lit features are added for each configuration based on which sources are included in the builtin library. The features are of the form `librt_has_<name>` where `<name>` is the name of the source file with the file extension removed. This handles C and assembly sources. With the lit features in place it is possible to make certain tests require them. Example: ``` REQUIRES: librt_has_comparedf2 ``` All top-level tests in `test/builtins/Unit` (i.e. not under `arm`, `ppc`, and `riscv`) have been annotated with the appropriate `REQUIRES: librt_has_*` statement. rdar://problem/55520987 Reviewers: beanz, steven_wu, arphaman, dexonsmith, phosek, thakis Subscribers: mgorny, #sanitizers, llvm-commits Tags: #llvm, #sanitizers Differential Revision: https://reviews.llvm.org/D68064 llvm-svn: 375150
97 lines
2.9 KiB
C
97 lines
2.9 KiB
C
// RUN: %clang_builtins %s %librt -o %t && %run %t
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// REQUIRES: librt_has_floatdisf
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//===-- floatdisf_test.c - Test __floatdisf -------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file tests __floatdisf for the compiler_rt library.
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//
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//===----------------------------------------------------------------------===//
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#include "int_lib.h"
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#include <float.h>
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#include <stdio.h>
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// Returns: convert a to a float, rounding toward even.
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// Assumption: float is a IEEE 32 bit floating point type
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// di_int is a 64 bit integral type
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// seee eeee emmm mmmm mmmm mmmm mmmm mmmm
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COMPILER_RT_ABI float __floatdisf(di_int a);
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int test__floatdisf(di_int a, float expected)
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{
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float x = __floatdisf(a);
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if (x != expected)
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printf("error in __floatdisf(%llX) = %a, expected %a\n",
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a, x, expected);
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return x != expected;
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}
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char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0};
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char assumption_2[sizeof(di_int)*CHAR_BIT == 64] = {0};
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char assumption_3[sizeof(float)*CHAR_BIT == 32] = {0};
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int main()
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{
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if (test__floatdisf(0, 0.0F))
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return 1;
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if (test__floatdisf(1, 1.0F))
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return 1;
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if (test__floatdisf(2, 2.0F))
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return 1;
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if (test__floatdisf(-1, -1.0F))
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return 1;
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if (test__floatdisf(-2, -2.0F))
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return 1;
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if (test__floatdisf(0x7FFFFF8000000000LL, 0x1.FFFFFEp+62F))
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return 1;
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if (test__floatdisf(0x7FFFFF0000000000LL, 0x1.FFFFFCp+62F))
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return 1;
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if (test__floatdisf(0x8000008000000000LL, -0x1.FFFFFEp+62F))
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return 1;
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if (test__floatdisf(0x8000010000000000LL, -0x1.FFFFFCp+62F))
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return 1;
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if (test__floatdisf(0x8000000000000000LL, -0x1.000000p+63F))
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return 1;
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if (test__floatdisf(0x8000000000000001LL, -0x1.000000p+63F))
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return 1;
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if (test__floatdisf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50F))
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return 1;
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if (test__floatdisf(0x0007FB72EA000000LL, 0x1.FEDCBAp+50F))
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return 1;
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if (test__floatdisf(0x0007FB72EB000000LL, 0x1.FEDCBAp+50F))
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return 1;
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if (test__floatdisf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAp+50F))
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return 1;
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if (test__floatdisf(0x0007FB72EC000000LL, 0x1.FEDCBCp+50F))
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return 1;
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if (test__floatdisf(0x0007FB72E8000001LL, 0x1.FEDCBAp+50F))
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return 1;
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if (test__floatdisf(0x0007FB72E6000000LL, 0x1.FEDCBAp+50F))
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return 1;
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if (test__floatdisf(0x0007FB72E7000000LL, 0x1.FEDCBAp+50F))
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return 1;
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if (test__floatdisf(0x0007FB72E7FFFFFFLL, 0x1.FEDCBAp+50F))
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return 1;
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if (test__floatdisf(0x0007FB72E4000001LL, 0x1.FEDCBAp+50F))
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return 1;
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if (test__floatdisf(0x0007FB72E4000000LL, 0x1.FEDCB8p+50F))
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return 1;
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return 0;
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}
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