new testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36220 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/PowerPC/shl_elim.ll b/test/CodeGen/PowerPC/shl_elim.ll
new file mode 100644 (file)
index 0000000..3dc4772
--- /dev/null
+++ b/test/CodeGen/PowerPC/shl_elim.ll
@@ -0,0 +1,11 @@
+; RUN: llvm-as < %s | llc -march=ppc32 | not grep slwi
+
+define i32 @test1(i64 %a) {
+        %tmp29 = lshr i64 %a, 24                ; <i64> [#uses=1]
+        %tmp23 = trunc i64 %tmp29 to i32                ; <i32> [#uses=1]
+        %tmp410 = lshr i32 %tmp23, 9            ; <i32> [#uses=1]
+        %tmp45 = trunc i32 %tmp410 to i16               ; <i16> [#uses=1]
+        %tmp456 = sext i16 %tmp45 to i32                ; <i32> [#uses=1]
+        ret i32 %tmp456
+}
+