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chkstk.S
(1009 B)
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chkstk2.S
(1.46 KB)
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floatdidf.c
(379 B)
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floatdisf.c
(343 B)
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floatdixf.c
(367 B)
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floatundidf.S
(1.32 KB)
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floatundisf.S
(692 B)
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floatundixf.S
(1.49 KB)
Editing: floatundixf.S
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. // See https://llvm.org/LICENSE.txt for license information. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception #include "../assembly.h" // long double __floatundixf(du_int a); #ifdef __x86_64__ CONST_SECTION .balign 16 twop64: .quad 0x43f0000000000000 #define REL_ADDR(_a) (_a)(%rip) .text .balign 4 DEFINE_COMPILERRT_FUNCTION(__floatundixf) movq %rdi, -8(%rsp) fildq -8(%rsp) test %rdi, %rdi js 1f ret 1: faddl REL_ADDR(twop64) ret END_COMPILERRT_FUNCTION(__floatundixf) #endif // __x86_64__ /* Branch-free implementation is ever so slightly slower, but more beautiful. It is likely superior for inlining, so I kept it around for future reference. #ifdef __x86_64__ CONST_SECTION .balign 4 twop52: .quad 0x4330000000000000 twop84_plus_twop52_neg: .quad 0xc530000000100000 twop84: .quad 0x4530000000000000 #define REL_ADDR(_a) (_a)(%rip) .text .balign 4 DEFINE_COMPILERRT_FUNCTION(__floatundixf) movl %edi, %esi // low 32 bits of input shrq $32, %rdi // hi 32 bits of input orq REL_ADDR(twop84), %rdi // 2^84 + hi (as a double) orq REL_ADDR(twop52), %rsi // 2^52 + lo (as a double) movq %rdi, -8(%rsp) movq %rsi, -16(%rsp) fldl REL_ADDR(twop84_plus_twop52_neg) faddl -8(%rsp) // hi - 2^52 (as double extended, no rounding occurs) faddl -16(%rsp) // hi + lo (as double extended) ret END_COMPILERRT_FUNCTION(__floatundixf) #endif // __x86_64__ */ NO_EXEC_STACK_DIRECTIVE
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