new testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21819 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/X86/shift-folding.ll b/test/CodeGen/X86/shift-folding.ll
new file mode 100644 (file)
index 0000000..2c53725
--- /dev/null
+++ b/test/CodeGen/X86/shift-folding.ll
@@ -0,0 +1,19 @@
+; RUN: llvm-as < %s | llc -march=x86 -enable-pattern-isel=1 | grep 's[ah][rl]l' | wc -l | grep 1
+
+int* %test1(int *%P, uint %X) {
+       %Y = shr uint %X, ubyte 2
+       %P2 = getelementptr int* %P, uint %Y
+       ret int* %P2
+}
+
+int* %test2(int *%P, uint %X) {
+       %Y = shl uint %X, ubyte 2
+       %P2 = getelementptr int* %P, uint %Y
+       ret int* %P2
+}
+
+int* %test3(int *%P, int %X) {
+       %Y = shr int %X, ubyte 2
+       %P2 = getelementptr int* %P, int %Y
+       ret int* %P2
+}