Vendor import of llvm trunk r132879:

http://llvm.org/svn/llvm-project/llvm/trunk@132879

1 files changed, 33 insertions, 0 deletions

diff --git a/test/CodeGen/ARM/ldstrexd.ll b/test/CodeGen/ARM/ldstrexd.ll
new file mode 100644
index 0000000..0c0911a
--- /dev/null
+++ b/test/CodeGen/ARM/ldstrexd.ll
@@ -0,0 +1,33 @@
+; RUN: llc < %s -mtriple=armv7-apple-darwin   | FileCheck %s
+; RUN: llc < %s -mtriple=thumbv7-apple-darwin | FileCheck %s
+
+%0 = type { i32, i32 }
+
+; CHECK: f0:
+; CHECK: ldrexd
+define i64 @f0(i8* %p) nounwind readonly {
+entry:
+  %ldrexd = tail call %0 @llvm.arm.ldrexd(i8* %p)
+  %0 = extractvalue %0 %ldrexd, 1
+  %1 = extractvalue %0 %ldrexd, 0
+  %2 = zext i32 %0 to i64
+  %3 = zext i32 %1 to i64
+  %shl = shl nuw i64 %2, 32
+  %4 = or i64 %shl, %3
+  ret i64 %4
+}
+
+; CHECK: f1:
+; CHECK: strexd
+define i32 @f1(i8* %ptr, i64 %val) nounwind {
+entry:
+  %tmp4 = trunc i64 %val to i32
+  %tmp6 = lshr i64 %val, 32
+  %tmp7 = trunc i64 %tmp6 to i32
+  %strexd = tail call i32 @llvm.arm.strexd(i32 %tmp4, i32 %tmp7, i8* %ptr)
+  ret i32 %strexd
+}
+
+declare %0 @llvm.arm.ldrexd(i8*) nounwind readonly
+declare i32 @llvm.arm.strexd(i32, i32, i8*) nounwind
+