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Improve dead code elimination

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This commit is contained in:
Justine Tunney 2021-02-08 04:04:42 -08:00
parent 760db8c5ad
commit 0e36cb3ac4
6606 changed files with 9685 additions and 9854 deletions
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6
libc/nexgen32e/lz4.h
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@ -28,17 +28,17 @@ COSMOPOLITAN_C_START_
╚────────────────────────────────────────────────────────────────────────────│*/
#define LZ4_MAGIC(FRAME) READ32LE(FRAME)
#define LZ4_FRAME_VERSION(FRAME) ((_LZ4_FRAME_FLG(FRAME) >> 6) & 0b11)
#define LZ4_FRAME_VERSION(FRAME) ((_LZ4_FRAME_FLG(FRAME) >> 6) & 3)
#define LZ4_FRAME_BLOCKINDEPENDENCE(FRAME) ((_LZ4_FRAME_FLG(FRAME) >> 5) & 1)
#define LZ4_FRAME_BLOCKCHECKSUMFLAG(FRAME) ((_LZ4_FRAME_FLG(FRAME) >> 4) & 1)
#define LZ4_FRAME_BLOCKCONTENTSIZEFLAG(FRAME) ((_LZ4_FRAME_FLG(FRAME) >> 3) & 1)
#define LZ4_FRAME_BLOCKCONTENTCHECKSUMFLAG(FRAME) \
((_LZ4_FRAME_FLG(FRAME) >> 2) & 1)
#define LZ4_FRAME_DICTIONARYIDFLAG(FRAME) ((_LZ4_FRAME_FLG(FRAME) >> 0) & 1)
#define LZ4_FRAME_BLOCKMAXSIZE(FRAME) ((_LZ4_FRAME_BD(FRAME) >> 4) & 0b111)
#define LZ4_FRAME_BLOCKMAXSIZE(FRAME) ((_LZ4_FRAME_BD(FRAME) >> 4) & 7)
#define LZ4_FRAME_RESERVED1(FRAME) ((_LZ4_FRAME_FLG(FRAME) >> 1) & 1)
#define LZ4_FRAME_RESERVED2(FRAME) ((_LZ4_FRAME_BD(FRAME) >> 7) & 1)
#define LZ4_FRAME_RESERVED3(FRAME) ((_LZ4_FRAME_BD(FRAME) >> 0) & 0b1111)
#define LZ4_FRAME_RESERVED3(FRAME) ((_LZ4_FRAME_BD(FRAME) >> 0) & 15)
#define LZ4_FRAME_BLOCKCONTENTSIZE(FRAME) \
(LZ4_FRAME_BLOCKCONTENTSIZEFLAG(FRAME) ? READ64LE((FRAME) + 4 + 1 + 1) : 0)
#define LZ4_FRAME_DICTIONARYID(FRAME) \

7
libc/nexgen32e/memcpy.S
View file

@ -110,7 +110,12 @@ MemCpy: .leafprologue
.L1: mov (%rsi),%cl
mov %cl,(%rdi)
jmp .L0
.Lerms: cmp kHalfCache3(%rip),%rdx
.Lerms:
#ifdef TINY
cmp $1024*1024,%rdx
#else
cmp kHalfCache3(%rip),%rdx
#endif
ja .Lnts
push %rdi
push %rsi

12
libc/nexgen32e/x86info.h
View file

@ -2,12 +2,12 @@
#define COSMOPOLITAN_LIBC_NEXGEN32E_X86INFO_H_
#include "libc/nexgen32e/kcpuids.h"
#define kX86CpuStepping ((KCPUIDS(1H, EAX) >> 0) & 0b1111)
#define kX86CpuModelid ((KCPUIDS(1H, EAX) >> 4) & 0b1111)
#define kX86CpuFamilyid ((KCPUIDS(1H, EAX) >> 8) & 0b1111)
#define kX86CpuType ((KCPUIDS(1H, EAX) >> 12) & 0b11)
#define kX86CpuExtmodelid ((KCPUIDS(1H, EAX) >> 16) & 0b1111)
#define kX86CpuExtfamilyid ((KCPUIDS(1H, EAX) >> 20) & 0b11111111)
#define kX86CpuStepping ((KCPUIDS(1H, EAX) >> 0) & 15)
#define kX86CpuModelid ((KCPUIDS(1H, EAX) >> 4) & 15)
#define kX86CpuFamilyid ((KCPUIDS(1H, EAX) >> 8) & 15)
#define kX86CpuType ((KCPUIDS(1H, EAX) >> 12) & 3)
#define kX86CpuExtmodelid ((KCPUIDS(1H, EAX) >> 16) & 15)
#define kX86CpuExtfamilyid ((KCPUIDS(1H, EAX) >> 20) & 255)
#define kX86CpuFamily \
(kX86CpuFamilyid + (kX86CpuFamily == 15 ? kX86CpuExtfamilyid : 0))