Fix Thumb2 function call isel. Thumb1 and Thumb2 should share the same
instructions for calls since BL and BLX are always 32-bit long and BX is always
16-bit long.
Also, we should be using BLX to call external function stubs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77756 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/Thumb2/thumb2-call.ll b/test/CodeGen/Thumb2/thumb2-call.ll
new file mode 100644
index 0000000..23a9b16
--- /dev/null
+++ b/test/CodeGen/Thumb2/thumb2-call.ll
@@ -0,0 +1,20 @@
+; RUN: llvm-as < %s | llc -march=thumb -mattr=+thumb2 | FileCheck %s
+
+@t = weak global i32 ()* null ; <i32 ()**> [#uses=1]
+
+declare void @g(i32, i32, i32, i32)
+
+define void @f() {
+; CHECK: f:
+; CHECK: blx
+ call void @g( i32 1, i32 2, i32 3, i32 4 )
+ ret void
+}
+
+define void @h() {
+; CHECK: h:
+; CHECK: blx r0
+ %tmp = load i32 ()** @t ; <i32 ()*> [#uses=1]
+ %tmp.upgrd.2 = tail call i32 %tmp( ) ; <i32> [#uses=0]
+ ret void
+}