diff options
| author | Ulrich Weigand <ulrich.weigand@de.ibm.com> | 2016-04-04 12:45:44 +0000 |
|---|---|---|
| committer | Ulrich Weigand <ulrich.weigand@de.ibm.com> | 2016-04-04 12:45:44 +0000 |
| commit | a9ac6d6cc225a25eb55c7edd8825780c44ee351e (patch) | |
| tree | 5ade5d942142285fcb628155f98ce498102c7120 /llvm/test/CodeGen/SystemZ | |
| parent | f557d083252598cc42ce1b5409edaa91a305c9f9 (diff) | |
| download | bcm5719-llvm-a9ac6d6cc225a25eb55c7edd8825780c44ee351e.tar.gz bcm5719-llvm-a9ac6d6cc225a25eb55c7edd8825780c44ee351e.zip | |
[SystemZ] Support ATOMIC_FENCE
A cross-thread sequentially consistent fence should be lowered into
z/Architecture's BCR serialization instruction, instead of causing a
fatal error in the back-end.
Author: bryanpkc
Differential Revision: http://reviews.llvm.org/D18644
llvm-svn: 265292
Diffstat (limited to 'llvm/test/CodeGen/SystemZ')
| -rw-r--r-- | llvm/test/CodeGen/SystemZ/atomic-fence-01.ll | 16 | ||||
| -rw-r--r-- | llvm/test/CodeGen/SystemZ/atomic-fence-02.ll | 13 |
2 files changed, 29 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/SystemZ/atomic-fence-01.ll b/llvm/test/CodeGen/SystemZ/atomic-fence-01.ll new file mode 100644 index 00000000000..25566db9078 --- /dev/null +++ b/llvm/test/CodeGen/SystemZ/atomic-fence-01.ll @@ -0,0 +1,16 @@ +; Test (fast) serialization. +; +; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s --check-prefix=Z10 +; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z196 | FileCheck %s --check-prefix=Z196 +; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=zEC12 | FileCheck %s --check-prefix=ZEC12 +; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z13 | FileCheck %s --check-prefix=Z13 + +define void @test() { +; Z10: bcr 15, %r0 +; Z196: bcr 14, %r0 +; ZEC12: bcr 14, %r0 +; Z13: bcr 14, %r0 + fence seq_cst + ret void +} + diff --git a/llvm/test/CodeGen/SystemZ/atomic-fence-02.ll b/llvm/test/CodeGen/SystemZ/atomic-fence-02.ll new file mode 100644 index 00000000000..4c4375ef669 --- /dev/null +++ b/llvm/test/CodeGen/SystemZ/atomic-fence-02.ll @@ -0,0 +1,13 @@ +; Serialization is emitted only for fence seq_cst. +; +; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s + +define void @test() { +; CHECK: #MEMBARRIER + fence acquire +; CHECK: #MEMBARRIER + fence release +; CHECK: #MEMBARRIER + fence acq_rel + ret void +} |
