new testcase for PR1473

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37361 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/PowerPC/2007-05-30-dagcombine-miscomp.ll b/test/CodeGen/PowerPC/2007-05-30-dagcombine-miscomp.ll
new file mode 100644 (file)
index 0000000..0ea76c7
--- /dev/null
+++ b/test/CodeGen/PowerPC/2007-05-30-dagcombine-miscomp.ll
@@ -0,0 +1,14 @@
+target datalayout = "E-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64"
+target triple = "powerpc-apple-darwin8.8.0"
+
+; RUN: llvm-as < %s | llc -march=ppc32 | grep {rlwinm r3, r3, 23, 30, 30}
+; PR1473
+
+define i8 @foo(i16 zext  %a) zext  {
+        %tmp2 = lshr i16 %a, 10         ; <i16> [#uses=1]
+        %tmp23 = trunc i16 %tmp2 to i8          ; <i8> [#uses=1]
+        %tmp4 = shl i8 %tmp23, 1                ; <i8> [#uses=1]
+        %tmp5 = and i8 %tmp4, 2         ; <i8> [#uses=1]
+        ret i8 %tmp5
+}
+