mirror of
git://git.musl-libc.org/musl
synced 2024-12-26 08:32:26 +00:00
a294f539c7
despite lacking the semantic content that the asm accesses the pointed-to object rather than just using its address as a value, the mips asm was not actually broken. the asm blocks were declared volatile, meaning that the compiler must treat them as having unknown side effects. however changing the asm to use memory constraints is desirable not just from a semantic correctness and consistency standpoint, but also produces better code. the compiler is able to use base/offset addressing expressions for the atomic object's address rather than having to load the address into a single register. this improves access to global locks in static libc, and access to non-zero-offset atomic fields in synchronization primitives, etc. |
||
|---|---|---|
| .. | ||
| arm | ||
| i386 | ||
| microblaze | ||
| mips | ||
| or1k | ||
| powerpc | ||
| sh | ||
| x32 | ||
| x86_64 | ||