46b73431ca
This adds full back-end support for the Fence, AtomicLoad and AtomicStore operations, and partial support for the AtomicCas and AtomicRmw operations. The missing pieces include sub-word operations, operations on little-endian memory requiring byte-swapping, and some of the subtypes of AtomicRmw -- everything that cannot be implemented without a compare-and-swap loop. This will be done in a follow-up patch. This patch already suffices to make the test suite green again after a recent change that now requires atomic operations when accessing the heap.
26 lines
493 B
Plaintext
26 lines
493 B
Plaintext
test compile
|
|
target s390x
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
;; ATOMIC_CAS
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
|
function %atomic_cas_i64(i64, i64, i64) -> i64 {
|
|
block0(v0: i64, v1: i64, v2: i64):
|
|
v3 = atomic_cas.i64 v2, v0, v1
|
|
return v3
|
|
}
|
|
|
|
; check: csg %r2, %r3, 0(%r4)
|
|
; nextln: br %r14
|
|
|
|
function %atomic_cas_i32(i32, i32, i64) -> i32 {
|
|
block0(v0: i32, v1: i32, v2: i64):
|
|
v3 = atomic_cas.i32 v2, v0, v1
|
|
return v3
|
|
}
|
|
|
|
; check: cs %r2, %r3, 0(%r4)
|
|
; nextln: br %r14
|
|
|