llvm-6502/test/CodeGen/PowerPC/atomic-2.ll
Eli Friedman de412c391b Convert more tests over to the new atomic instructions.
I did not convert Atomics-32.ll and Atomics-64.ll by hand; the diff is autoupgrade output.

The wmb test is gone because there isn't any way to express wmb with the new atomic instructions; if someone really needs a non-asm way to write a wmb on Alpha, a platform-specific intrisic could be added.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140566 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-26 21:30:17 +00:00

27 lines
600 B
LLVM

; RUN: llc < %s -march=ppc64 | FileCheck %s
define i64 @exchange_and_add(i64* %mem, i64 %val) nounwind {
; CHECK: exchange_and_add:
; CHECK: ldarx
%tmp = atomicrmw add i64* %mem, i64 %val monotonic
; CHECK: stdcx.
ret i64 %tmp
}
define i64 @exchange_and_cmp(i64* %mem) nounwind {
; CHECK: exchange_and_cmp:
; CHECK: ldarx
%tmp = cmpxchg i64* %mem, i64 0, i64 1 monotonic
; CHECK: stdcx.
; CHECK: stdcx.
ret i64 %tmp
}
define i64 @exchange(i64* %mem, i64 %val) nounwind {
; CHECK: exchange:
; CHECK: ldarx
%tmp = atomicrmw xchg i64* %mem, i64 1 monotonic
; CHECK: stdcx.
ret i64 %tmp
}