Test case for r181160 and r181161. rdar://13782395

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181162 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/ARM/2013-05-05-IfConvertBug.ll b/test/CodeGen/ARM/2013-05-05-IfConvertBug.ll
new file mode 100644 (file)
index 0000000..abc6e0d
--- /dev/null
+++ b/test/CodeGen/ARM/2013-05-05-IfConvertBug.ll
@@ -0,0 +1,71 @@
+; RUN: llc < %s -mtriple=thumbv7-apple-ios -mcpu=cortex-a8 | FileCheck %s
+; rdar://13782395
+
+define i32 @t1(i32 %a, i32 %b, i8** %retaddr) {
+; CHECK: t1:
+; CHECK: Block address taken
+; CHECK-NOT: Address of block that was removed by CodeGen
+  store i8* blockaddress(@t1, %cond_true), i8** %retaddr
+  %tmp2 = icmp eq i32 %a, 0
+  br i1 %tmp2, label %cond_false, label %cond_true
+
+cond_true:
+  %tmp5 = add i32 %b, 1
+  ret i32 %tmp5
+
+cond_false:
+  %tmp7 = add i32 %b, -1
+  ret i32 %tmp7
+}
+
+define i32 @t2(i32 %a, i32 %b, i32 %c, i32 %d, i8** %retaddr) {
+; CHECK: t2:
+; CHECK: Block address taken
+; CHECK: %cond_true
+; CHECK: add
+; CHECK: bx lr
+  store i8* blockaddress(@t2, %cond_true), i8** %retaddr
+  %tmp2 = icmp sgt i32 %c, 10
+  %tmp5 = icmp slt i32 %d, 4
+  %tmp8 = and i1 %tmp5, %tmp2
+  %tmp13 = add i32 %b, %a
+  br i1 %tmp8, label %cond_true, label %UnifiedReturnBlock
+
+cond_true:
+  %tmp15 = add i32 %tmp13, %c
+  %tmp1821 = sub i32 %tmp15, %d
+  ret i32 %tmp1821
+
+UnifiedReturnBlock:
+  ret i32 %tmp13
+}
+
+define hidden fastcc void @t3(i8** %retaddr) {
+; CHECK: t3:
+; CHECK: Block address taken
+; CHECK-NOT: Address of block that was removed by CodeGen
+bb:
+  store i8* blockaddress(@t3, %KBBlockZero_return_1), i8** %retaddr
+  br i1 undef, label %bb77, label %bb7.i
+
+bb7.i:                                            ; preds = %bb35
+  br label %bb2.i
+
+KBBlockZero_return_1:                             ; preds = %KBBlockZero.exit
+  unreachable
+
+KBBlockZero_return_0:                             ; preds = %KBBlockZero.exit
+  unreachable
+
+bb77:                                             ; preds = %bb26, %bb12, %bb
+  ret void
+
+bb2.i:                                            ; preds = %bb6.i350, %bb7.i
+  br i1 undef, label %bb6.i350, label %KBBlockZero.exit
+
+bb6.i350:                                         ; preds = %bb2.i
+  br label %bb2.i
+
+KBBlockZero.exit:                                 ; preds = %bb2.i
+  indirectbr i8* undef, [label %KBBlockZero_return_1, label %KBBlockZero_return_0]
+}