https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108134
Bug ID: 108134 Summary: A description bug for Extended Asm document Product: gcc Version: unknown Status: UNCONFIRMED Severity: normal Priority: P3 Component: c Assignee: unassigned at gcc dot gnu.org Reporter: liweifriends at gmail dot com Target Milestone: --- In document (https://github.com/gcc-mirror/gcc/blob/master/gcc/doc/extend.texi), there are the following description: The rest of this discussion uses the following code for illustrative purposes. ``` int main() { int iInt = 1; top: asm volatile goto ("some assembler instructions here" : /* No outputs. */ : "q" (iInt), "X" (sizeof(unsigned char) + 1), "i" (42) : /* No clobbers. */ : top); } With no modifiers, this is what the output from the operands would be for the ‘att’ and ‘intel’ dialects of assembler: Operand ‘att’ ‘intel’ %0 %eax eax %1 $2 2 %3 $.L3 OFFSET FLAT:.L3 %4 $8 8 %5 %xmm0 xmm0 %7 $0 0 ``` However, for the inline asm code, there is no %4, %5, and %7 at all. And in the following table, it also shows something like "%y6", but there is no %6 at all. So the reader cannot understand the meaning of them.