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This commit is contained in:
Rui Ueyama 2020-10-28 15:18:31 +09:00
parent 6440b25fca
commit 3ae64cf861
2 changed files with 18 additions and 7 deletions
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2
Makefile
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@ -7,7 +7,7 @@ LLVM_LIBS=$(wildcard llvm-project/build/lib/libLLVM*.a)
CURRENT_DIR=$(shell pwd)
TBB_LIBDIR=$(wildcard $(CURRENT_DIR)/oneTBB/build/linux_intel64_*_release/)
CPPFLAGS=-g $(shell $(LLVM_CONFIG) --cxxflags) -IoneTBB/include -pthread -std=c++17 -O2
CPPFLAGS=-g $(shell $(LLVM_CONFIG) --cxxflags) -IoneTBB/include -pthread -std=c++17
LDFLAGS=$(shell $(LLVM_CONFIG) --ldflags) -L$(TBB_LIBDIR) -Wl,-rpath=$(TBB_LIBDIR) -fuse-ld=lld
LIBS=-pthread -ltbb -lcurses -Wl,--start-group $(LLVM_LIBS) -Wl,--end-group
OBJS=main.o writer.o input_files.o input_sections.o output_chunks.o output_file.o

25
mold.h
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@ -37,6 +37,7 @@
#include <unistd.h>
#include <unistd.h>
#include <unordered_set>
#include <xmmintrin.h>
#define SECTOR_SIZE 512
#define PAGE_SIZE 4096
@ -538,13 +539,23 @@ extern std::atomic_int num_string_pieces;
// Other
//
inline void memcpy_nontemporal(void *dst, const void *src, size_t n) {
#if 1
for (size_t i = 0; i < n; i++) {
uint8_t val = __builtin_nontemporal_load((char *)src + i);
__builtin_nontemporal_store(val, (char *)dst + i);
}
#else
inline void memcpy_nontemporal(void *dst_, const void *src_, size_t n) {
#if 0
char *src = (char *)src_;
char *dst = (char *)dst_;
if ((uintptr_t)src % 16 || (uintptr_t)dst % 16) {
memcpy(dst, src, n);
return;
}
size_t i = 0;
for (; i + 16 < n; i += 16) {
__m128 val = __builtin_nontemporal_load((__m128 *)(src + i));
__builtin_nontemporal_store(val, (__m128 *)(dst + i));
}
memcpy(dst + i, src + i, n - i);
#else
memcpy(dst_, src_, n);
#endif
}