Vendor import of llvm trunk r161861:

http://llvm.org/svn/llvm-project/llvm/trunk@161861

1 files changed, 37 insertions, 0 deletions

diff --git a/test/CodeGen/X86/switch-order-weight.ll b/test/CodeGen/X86/switch-order-weight.ll
new file mode 100644
index 0000000..0fdd56d
--- /dev/null
+++ b/test/CodeGen/X86/switch-order-weight.ll
@@ -0,0 +1,37 @@
+; RUN: llc -mtriple=x86_64-apple-darwin11 < %s | FileCheck %s
+
+; Check that the cases which lead to unreachable are checked after "10"
+
+define void @test1(i32 %x) nounwind uwtable ssp {
+entry:
+  switch i32 %x, label %if.end7 [
+    i32 0, label %if.then
+    i32 10, label %if.then2
+    i32 20, label %if.then5
+  ]
+
+; CHECK: test1:
+; CHECK-NOT: unr
+; CHECK: cmpl $10
+; CHECK: bar
+; CHECK: cmpl $20
+
+if.then:
+  tail call void @unr(i32 23) noreturn nounwind
+  unreachable
+
+if.then2:
+  tail call void @bar(i32 42) nounwind
+  br label %if.end7
+
+if.then5:
+  tail call void @unr(i32 5) noreturn nounwind
+  unreachable
+
+if.end7:
+  ret void
+}
+
+declare void @unr(i32) noreturn
+
+declare void @bar(i32)