Add testcase for PR11107.

llvm-svn: 141607

1 files changed, 49 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/ARM/thumb2-it-block.ll b/llvm/test/CodeGen/ARM/thumb2-it-block.ll
new file mode 100644
index 00000000000..47198defb0d
--- /dev/null
+++ b/llvm/test/CodeGen/ARM/thumb2-it-block.ll
@@ -0,0 +1,49 @@
+; RUN: llc < %s -mtriple thumbv7-apple-ios5.0.0 | FileCheck %s
+; PR11107
+
+%struct.huffcodetab = type { i32, i32, i32*, i8* }
+
+@ht = external global [34 x %struct.huffcodetab]
+
+define i32 @func(i32 %table_select, i32 %x, i32 %y, i32* %code) nounwind {
+entry:
+; CHECK:      BB#0:
+; CHECK:        movs.w
+; CHECK-NEXT:   it    mi
+; CHECK-NEXT:   rsbmi
+; CHECK-NEXT:   movs.w
+; CHECK-NEXT:   it    mi
+; CHECK-NEXT:   rsbmi
+  %cmp.i = icmp sgt i32 %x, 0
+  %mul.i = sub i32 0, %x
+  %mul.i6 = select i1 %cmp.i, i32 %x, i32 %mul.i
+  %tmp = select i1 %cmp.i, i32 0, i32 1
+  %cmp.i1 = icmp sgt i32 %y, 0
+  %mul.i3 = sub i32 0, %y
+  %mul.i38 = select i1 %cmp.i1, i32 %y, i32 %mul.i3
+  br label %if.then3
+
+if.then3:                                         ; preds = %if.end
+  %xlen = getelementptr inbounds [34 x %struct.huffcodetab]* @ht, i32 0, i32 %table_select, i32 0
+  %tmp2 = load i32* %xlen, align 4, !tbaa !0
+  %sub = add nsw i32 %mul.i6, -15
+  %cmp4 = icmp sgt i32 %mul.i6, 14
+  %mul.i7 = select i1 %cmp4, i32 15, i32 %mul.i6
+  %sub9 = add nsw i32 %mul.i38, -15
+  %cmp7 = icmp sgt i32 %mul.i38, 14
+  %mul.i39 = select i1 %cmp7, i32 15, i32 %mul.i38
+  %mul = shl nsw i32 %mul.i7, 4
+  %add = add nsw i32 %mul, %mul.i39
+  %table = getelementptr inbounds [34 x %struct.huffcodetab]* @ht, i32 0, i32 %table_select, i32 2
+  %tmp3 = load i32** %table, align 4, !tbaa !3
+  %arrayidx11 = getelementptr inbounds i32* %tmp3, i32 %add
+  %tmp4 = load i32* %arrayidx11, align 4, !tbaa !4
+  store i32 %tmp4, i32* %code, align 4, !tbaa !0
+  ret i32 42
+}
+
+!0 = metadata !{metadata !"int", metadata !1}
+!1 = metadata !{metadata !"omnipotent char", metadata !2}
+!2 = metadata !{metadata !"Simple C/C++ TBAA", null}
+!3 = metadata !{metadata !"any pointer", metadata !1}
+!4 = metadata !{metadata !"long", metadata !1}