1 files changed, 33 insertions, 0 deletions
diff --git a/test/CodeGen/PowerPC/tls-store2.ll b/test/CodeGen/PowerPC/tls-store2.ll
new file mode 100644
index 000000000000..f884dd8a0a17
--- /dev/null
+++ b/test/CodeGen/PowerPC/tls-store2.ll
@@ -0,0 +1,33 @@
+; RUN: llc -march=ppc64 -mcpu=pwr7 -O2 -relocation-model=pic < %s | FileCheck %s
+
+target datalayout = "e-m:e-i64:64-n32:64"
+target triple = "powerpc64le-unknown-linux-gnu"
+
+; Test back-to-back stores of TLS variables to ensure call sequences no
+; longer overlap.
+
+@__once_callable = external thread_local global i8**
+@__once_call = external thread_local global void ()*
+
+define i64 @call_once(i64 %flag, i8* %ptr) {
+entry:
+  %var = alloca i8*, align 8
+  store i8* %ptr, i8** %var, align 8
+  store i8** %var, i8*** @__once_callable, align 8
+  store void ()* @__once_call_impl, void ()** @__once_call, align 8
+  ret i64 %flag
+}
+
+; CHECK-LABEL: call_once:
+; CHECK: addis 3, 2, __once_callable@got@tlsgd@ha
+; CHECK: addi 3, 3, __once_callable@got@tlsgd@l
+; CHECK: bl __tls_get_addr(__once_callable@tlsgd)
+; CHECK-NEXT: nop
+; CHECK: std {{[0-9]+}}, 0(3)
+; CHECK: addis 3, 2, __once_call@got@tlsgd@ha
+; CHECK: addi 3, 3, __once_call@got@tlsgd@l
+; CHECK: bl __tls_get_addr(__once_call@tlsgd)
+; CHECK-NEXT: nop
+; CHECK: std {{[0-9]+}}, 0(3)
+
+declare void @__once_call_impl()