diff options
| author | Tim Northover <tnorthover@apple.com> | 2013-10-25 09:30:24 +0000 |
|---|---|---|
| committer | Tim Northover <tnorthover@apple.com> | 2013-10-25 09:30:24 +0000 |
| commit | 214c37d1816b62a25525282817f7088a1e2ed1dc (patch) | |
| tree | 86ca829469e85c4e457480afd50f0cc8de3bdcba /lib/Target/ARM/ARMSubtarget.h | |
| parent | 5a42ae81f742aaab826b7a72cb0a9a7e5a957a07 (diff) | |
| download | llvm-214c37d1816b62a25525282817f7088a1e2ed1dc.tar.gz llvm-214c37d1816b62a25525282817f7088a1e2ed1dc.tar.bz2 llvm-214c37d1816b62a25525282817f7088a1e2ed1dc.tar.xz | |
ARM: don't expand atomicrmw inline on Cortex-M0
There's a barrier instruction so that should still be used, but most actual
atomic operations are going to need a platform decision on the correct
behaviour (either nop if single-threaded or OS-support otherwise).
rdar://problem/15287210
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193399 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/ARM/ARMSubtarget.h')
| -rw-r--r-- | lib/Target/ARM/ARMSubtarget.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/Target/ARM/ARMSubtarget.h b/lib/Target/ARM/ARMSubtarget.h index 9cc3a71f89..b9a55fb691 100644 --- a/lib/Target/ARM/ARMSubtarget.h +++ b/lib/Target/ARM/ARMSubtarget.h @@ -263,6 +263,9 @@ public: bool hasDivideInARMMode() const { return HasHardwareDivideInARM; } bool hasT2ExtractPack() const { return HasT2ExtractPack; } bool hasDataBarrier() const { return HasDataBarrier; } + bool hasAnyDataBarrier() const { + return HasDataBarrier || (hasV6Ops() && !isThumb()); + } bool useMulOps() const { return UseMulOps; } bool useFPVMLx() const { return !SlowFPVMLx; } bool hasVMLxForwarding() const { return HasVMLxForwarding; } |