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...s.x++; return s; } But the output at -O2 is foo: # @foo .cfi_startproc # BB#0: # %entry movb (%rdi), %al movzbl 1(%rdi), %ecx movb %al, z(%rip) movb %cl, z+1(%rip) incb %al shll $8, %ecx movzbl %al, %eax orl %ecx, %eax retq I was hoping it would do something along the lines of movb (%rdi), %al movb 1(%rdi), %ah movh %ax, z(%rip) incb %al retq Why is the x86 backend not getting this code? Does it k...

...t at -O2 is > >foo: # @foo > .cfi_startproc ># BB#0: # %entry > movb (%rdi), %al > movzbl 1(%rdi), %ecx > movb %al, z(%rip) > movb %cl, z+1(%rip) > incb %al > shll $8, %ecx > movzbl %al, %eax > orl %ecx, %eax > retq > > >I was hoping it would do something along the lines of > > movb (%rdi), %al > movb 1(%rdi), %ah > movh %ax, z(%rip) > incb %al > retq > &...

...tput at -O2 is > > foo: # @foo > .cfi_startproc > # BB#0: # %entry > movb (%rdi), %al > movzbl 1(%rdi), %ecx > movb %al, z(%rip) > movb %cl, z+1(%rip) > incb %al > shll $8, %ecx > movzbl %al, %eax > orl %ecx, %eax > retq > > > I was hoping it would do something along the lines of > > movb (%rdi), %al > movb 1(%rdi), %ah > movh %ax, z(%rip) > incb %al > retq > >...

...o: # @foo >> .cfi_startproc >> # BB#0: # %entry >> movb (%rdi), %al >> movzbl 1(%rdi), %ecx >> movb %al, z(%rip) >> movb %cl, z+1(%rip) >> incb %al >> shll $8, %ecx >> movzbl %al, %eax >> orl %ecx, %eax >> retq >> >> >> I was hoping it would do something along the lines of >> >> movb (%rdi), %al >> movb 1(%rdi), %ah >> movh %ax, z(%r...

...# @foo > > .cfi_startproc > ># BB#0: # %entry > > movb (%rdi), %al > > movzbl 1(%rdi), %ecx > > movb %al, z(%rip) > > movb %cl, z+1(%rip) > > incb %al > > shll $8, %ecx > > movzbl %al, %eax > > orl %ecx, %eax > > retq > > > > > >I was hoping it would do something along the lines of > > > > movb (%rdi), %al > > movb 1(%rdi), %ah > >...

...@foo > > .cfi_startproc > ># BB#0: # %entry > > movb (%rdi), %al > > movzbl 1(%rdi), %ecx > > movb %al, z(%rip) > > movb %cl, z+1(%rip) > > incb %al > > shll $8, %ecx > > movzbl %al, %eax > > orl %ecx, %eax > > retq > > > > > >I was hoping it would do something along the lines of > > > > movb (%rdi), %al &gt...

....cfi_startproc >> ># BB#0: # %entry >> > movb (%rdi), %al >> > movzbl 1(%rdi), %ecx >> > movb %al, z(%rip) >> > movb %cl, z+1(%rip) >> > incb %al >> > shll $8, %ecx >> > movzbl %al, %eax >> > orl %ecx, %eax >> > retq >> > >> > >> >I was hoping it would do something along the lines of >> > >>...

...>>> ># BB#0: # %entry >>> > movb (%rdi), %al >>> > movzbl 1(%rdi), %ecx >>> > movb %al, z(%rip) >>> > movb %cl, z+1(%rip) >>> > incb %al >>> > shll $8, %ecx >>> > movzbl %al, %eax >>> > orl %ecx, %eax >>> > retq >>> > >>> > >>> >I was hoping it would do something along the lines of &...

...# @foo >>> .cfi_startproc >>> # BB#0: # %entry >>> movb (%rdi), %al >>> movzbl 1(%rdi), %ecx >>> movb %al, z(%rip) >>> movb %cl, z+1(%rip) >>> incb %al >>> shll $8, %ecx >>> movzbl %al, %eax >>> orl %ecx, %eax >>> retq >>> >>> >>> I was hoping it would do something along the lines of >>> >>> movb (%rdi), %al >>> movb...

...# BB#0: # %entry >>>> > movb (%rdi), %al >>>> > movzbl 1(%rdi), %ecx >>>> > movb %al, z(%rip) >>>> > movb %cl, z+1(%rip) >>>> > incb %al >>>> > shll $8, %ecx >>>> > movzbl %al, %eax >>>> > orl %ecx, %eax >>>> > retq >>>> > >>>> > >>>> >I was hoping it would do so...

Hi, I am looking for a solution to boot MY system on any PC. To store most of the system and all of my data I want to use an USB storage (in my case an external USB harddisk (2.0 capable)). Since booting off an USB device is not an universal thing I would prefer to have a boot disk with a minimal system - just enough to load most (all?) of the system from the attached USB device. Is this an

...not be any data ready yet, or the data may be being withheld for various reasons. It would also make it much easier to integrate with something like libfishsound. ie something like __initialise_flac_decoder(ALL_THE_HEADERS inHeaders); __set_decoded_callback(CALL_ME_HERE_WITH_THE_DECODED_AUDIO inCB); __feed_flac_data(SOME_FLAC_DATA inData, BOOL inSendMeAudioYet); Then if a full frame ins't passed in... it just waits on the data to complete it, instead of calling a read callback... if more than one frame is passed in, the decoded callback may fire several times for each feed. Or perhap...

...CL(7-6) MSb max cyl., */ + /* CL(5-0) max sector, DH max head, DL drive qty, ES:DI floppy parameter table */ + movb %ch, %bl /* transfer maximum cylinder number */ + movb %cl, %bh + shrb $6, %bh /* move bits into correct positions */ + pushw %bx /* preserve maximum cylinder number */ + incb %dh /* convert zero-based maximum to quantity */ + movzbw %dh, %ax /* DH = maximum head number */ + pushw %ax /* preserve maximum head number */ + andw $0x3f, %cx /* mask to enforce maximum sector number 63 */ + pushw %cx /* preserve sector count */ + incw %ax /* convert zero-based ma...

...CL(7-6) MSb max cyl., */ + /* CL(5-0) max sector, DH max head, DL drive qty, ES:DI floppy parameter table */ + movb %ch, %bl /* transfer maximum cylinder number */ + movb %cl, %bh + shrb $6, %bh /* move bits into correct positions */ + pushw %bx /* preserve maximum cylinder number */ + incb %dh /* convert zero-based maximum to quantity */ + movzbw %dh, %ax /* DH = maximum head number */ + pushw %ax /* preserve maximum head number */ + andw $0x3f, %cx /* mask to enforce maximum sector number 63 */ + pushw %cx /* preserve sector count */ + incw %ax /* convert zero-based ma...

From: Jeremy Fitzhardinge <jeremy.fitzhardinge at citrix.com> Hi all, This is a revised version of the pvticket lock series. The early part of the series is mostly unchanged: it converts the bulk of the ticket lock code into C and makes the "small" and "large" ticket code common. The only changes are the incorporation of various review comments. The latter part of

From: Jeremy Fitzhardinge <jeremy.fitzhardinge at citrix.com> Hi all, This is a revised version of the pvticket lock series. The early part of the series is mostly unchanged: it converts the bulk of the ticket lock code into C and makes the "small" and "large" ticket code common. The only changes are the incorporation of various review comments. The latter part of

From: Jeremy Fitzhardinge <jeremy.fitzhardinge at citrix.com> Hi all, This is a revised version of the pvticket lock series. The early part of the series is mostly unchanged: it converts the bulk of the ticket lock code into C and makes the "small" and "large" ticket code common. The only changes are the incorporation of various review comments. The latter part of

...CL(7-6) MSb max cyl., */ + /* CL(5-0) max sector, DH max head, DL drive qty, ES:DI floppy parameter table */ + movb %ch, %bl /* transfer maximum cylinder number */ + movb %cl, %bh + shrb $6, %bh /* move bits into correct positions */ + pushw %bx /* preserve maximum cylinder number */ + incb %dh /* convert zero-based maximum to quantity */ + movzbw %dh, %ax /* DH = maximum head number */ + pushw %ax /* preserve maximum head number */ + andw $0x3f, %cx /* mask to enforce maximum sector number 63 */ + pushw %cx /* preserve sector count */ + incw %ax /* convert zero-based ma...

From: Jeremy Fitzhardinge <jeremy.fitzhardinge at citrix.com> Hi all, This series does two major things: 1. It converts the bulk of the implementation to C, and makes the "small ticket" and "large ticket" code common. Only the actual size-dependent asm instructions are specific to the ticket size. The resulting generated asm is very similar to the current

From: Jeremy Fitzhardinge <jeremy.fitzhardinge at citrix.com> Hi all, This series does two major things: 1. It converts the bulk of the implementation to C, and makes the "small ticket" and "large ticket" code common. Only the actual size-dependent asm instructions are specific to the ticket size. The resulting generated asm is very similar to the current