52818fd97f
We are lacking builtins support for `_Float16`. In most cases, we can use other floating-type builtins and truncate them to `_Float16`. But it's a problem to SNaN, e.g., https://gcc.godbolt.org/z/cqr5nG1jh This patch adds `__builtin_nansf16` support as well as other 3 ones since they are usually used together. Reviewed By: LuoYuanke Differential Revision: https://reviews.llvm.org/D127050
18 lines
767 B
C
18 lines
767 B
C
// RUN: %clang_cc1 -emit-llvm -o - -triple x86_64-linux-pc -target-feature +avx512fp16 %s | FileCheck %s
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// RUN: %clang_cc1 -emit-llvm -o - -triple spir-unknown-unknown %s | FileCheck %s
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// RUN: %clang_cc1 -emit-llvm -o - -triple armv7a--none-eabi %s | FileCheck %s
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// RUN: %clang_cc1 -emit-llvm -o - -triple aarch64-linux-gnu %s | FileCheck %s
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void test_float16_builtins(void) {
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volatile _Float16 res;
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// CHECK: store volatile half 0xH7C00, ptr %res, align 2
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res = __builtin_huge_valf16();
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// CHECK: store volatile half 0xH7C00, ptr %res, align 2
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res = __builtin_inff16();
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// CHECK: store volatile half 0xH7E00, ptr %res, align 2
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res = __builtin_nanf16("");
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// CHECK: store volatile half 0xH7D00, ptr %res, align 2
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res = __builtin_nansf16("");
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}
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