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📄 adddf3vfp.S(1008 B)
📄 addsf3.S(6.89 KB)
📄 addsf3vfp.S(989 B)
📄 aeabi_cdcmp.S(3.25 KB)
📄 aeabi_cdcmpeq_check_nan.c(570 B)
📄 aeabi_cfcmp.S(3.16 KB)
📄 aeabi_cfcmpeq_check_nan.c(568 B)
📄 aeabi_dcmp.S(1.83 KB)
📄 aeabi_div0.c(1.43 KB)
📄 aeabi_drsub.c(541 B)
📄 aeabi_fcmp.S(1.83 KB)
📄 aeabi_frsub.c(541 B)
📄 aeabi_idivmod.S(1.42 KB)
📄 aeabi_ldivmod.S(1.23 KB)
📄 aeabi_memcmp.S(883 B)
📄 aeabi_memcpy.S(883 B)
📄 aeabi_memmove.S(867 B)
📄 aeabi_memset.S(1.39 KB)
📄 aeabi_uidivmod.S(1.57 KB)
📄 aeabi_uldivmod.S(1.21 KB)
📄 bswapdi2.S(1.07 KB)
📄 bswapsi2.S(856 B)
📄 chkstk.S(1.02 KB)
📄 clzdi2.S(1.96 KB)
📄 clzsi2.S(1.67 KB)
📄 comparesf2.S(7.21 KB)
📄 divdf3vfp.S(1006 B)
📄 divmodsi4.S(2.07 KB)
📄 divsf3vfp.S(1002 B)
📄 divsi3.S(2.21 KB)
📄 eqdf2vfp.S(1023 B)
📄 eqsf2vfp.S(1.01 KB)
📄 extendsfdf2vfp.S(1.01 KB)
📄 fixdfsivfp.S(1009 B)
📄 fixsfsivfp.S(996 B)
📄 fixunsdfsivfp.S(1.05 KB)
📄 fixunssfsivfp.S(1.05 KB)
📄 floatsidfvfp.S(1016 B)
📄 floatsisfvfp.S(1014 B)
📄 floatunssidfvfp.S(1.01 KB)
📄 floatunssisfvfp.S(1.01 KB)
📄 fp_mode.c(1.56 KB)
📄 gedf2vfp.S(1.03 KB)
📄 gesf2vfp.S(1.02 KB)
📄 gtdf2vfp.S(1.01 KB)
📄 gtsf2vfp.S(1019 B)
📄 ledf2vfp.S(1.01 KB)
📄 lesf2vfp.S(1.01 KB)
📄 ltdf2vfp.S(1.01 KB)
📄 ltsf2vfp.S(1 KB)
📄 modsi3.S(1.7 KB)
📄 muldf3vfp.S(1.01 KB)
📄 mulsf3vfp.S(1005 B)
📄 nedf2vfp.S(1.02 KB)
📄 negdf2vfp.S(883 B)
📄 negsf2vfp.S(868 B)
📄 nesf2vfp.S(1.01 KB)
📄 restore_vfp_d8_d15_regs.S(1.23 KB)
📄 save_vfp_d8_d15_regs.S(1.23 KB)
📄 softfloat-alias.list(580 B)
📄 subdf3vfp.S(1.02 KB)
📄 subsf3vfp.S(1 KB)
📄 switch16.S(1.9 KB)
📄 switch32.S(1.9 KB)
📄 switch8.S(1.75 KB)
📄 switchu8.S(1.74 KB)
📄 sync-ops.h(3.7 KB)
📄 sync_fetch_and_add_4.S(696 B)
📄 sync_fetch_and_add_8.S(769 B)
📄 sync_fetch_and_and_4.S(655 B)
📄 sync_fetch_and_and_8.S(768 B)
📄 sync_fetch_and_max_4.S(665 B)
📄 sync_fetch_and_max_8.S(769 B)
📄 sync_fetch_and_min_4.S(664 B)
📄 sync_fetch_and_min_8.S(769 B)
📄 sync_fetch_and_nand_4.S(658 B)
📄 sync_fetch_and_nand_8.S(772 B)
📄 sync_fetch_and_or_4.S(652 B)
📄 sync_fetch_and_or_8.S(765 B)
📄 sync_fetch_and_sub_4.S(696 B)
📄 sync_fetch_and_sub_8.S(769 B)
📄 sync_fetch_and_umax_4.S(669 B)
📄 sync_fetch_and_umax_8.S(773 B)
📄 sync_fetch_and_umin_4.S(668 B)
📄 sync_fetch_and_umin_8.S(773 B)
📄 sync_fetch_and_xor_4.S(655 B)
📄 sync_fetch_and_xor_8.S(768 B)
📄 sync_synchronize.S(973 B)
📄 truncdfsf2vfp.S(1.02 KB)
📄 udivmodsi4.S(3.75 KB)
📄 udivsi3.S(5.8 KB)
📄 umodsi3.S(3.24 KB)
📄 unorddf2vfp.S(1.02 KB)
📄 unordsf2vfp.S(1.02 KB)

Editing: clzdi2.S

//===-- clzdi2.c - Implement __clzdi2 -------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// This file implements count leading zeros for 64bit arguments.
//
//===----------------------------------------------------------------------===//

#include "../assembly.h"

.syntax unified
	.text
	DEFINE_CODE_STATE

.p2align	2
DEFINE_COMPILERRT_FUNCTION(__clzdi2)
#ifdef __ARM_FEATURE_CLZ
#ifdef __ARMEB__
	cmp	r0, 0
	itee ne
	clzne	r0, r0
	clzeq	r0, r1
	addeq	r0, r0, 32
#else
	cmp	r1, 0
	itee ne
	clzne	r0, r1
	clzeq	r0, r0
	addeq	r0, r0, 32
#endif
	JMP(lr)
#else
	// Assumption: n != 0

// r0: n
	// r1: upper half of n, overwritten after check
	// r1: count of leading zeros in n + 1
	// r2: scratch register for shifted r0
#ifdef __ARMEB__
	cmp	r0, 0
	moveq	r0, r1
#else
	cmp	r1, 0
	movne	r0, r1
#endif
	movne	r1, 1
	moveq	r1, 33

// Basic block:
	// if ((r0 >> SHIFT) == 0)
	//   r1 += SHIFT;
	// else
	//   r0 >>= SHIFT;
	// for descending powers of two as SHIFT.
#define BLOCK(shift) \
	lsrs	r2, r0, shift; \
	movne	r0, r2; \
	addeq	r1, shift \

BLOCK(16)
	BLOCK(8)
	BLOCK(4)
	BLOCK(2)

// The basic block invariants at this point are (r0 >> 2) == 0 and
	// r0 != 0. This means 1 <= r0 <= 3 and 0 <= (r0 >> 1) <= 1.
	//
	// r0 | (r0 >> 1) == 0 | (r0 >> 1) == 1 | -(r0 >> 1) | 1 - (r0 >> 1)
	// ---+----------------+----------------+------------+--------------
	// 1  | 1              | 0              | 0          | 1
	// 2  | 0              | 1              | -1         | 0
	// 3  | 0              | 1              | -1         | 0
	//
	// The r1's initial value of 1 compensates for the 1 here.
	sub	r0, r1, r0, lsr #1

JMP(lr)
#endif // __ARM_FEATURE_CLZ
END_COMPILERRT_FUNCTION(__clzdi2)

NO_EXEC_STACK_DIRECTIVE

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Editing: clzdi2.S

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