It's not necessary to do rounding for alloca operations when the requested
alignment is equal to the stack alignment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40004 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/PowerPC/rlwinm.ll b/test/CodeGen/PowerPC/rlwinm.ll
new file mode 100644
index 0000000..32e8f26
--- /dev/null
+++ b/test/CodeGen/PowerPC/rlwinm.ll
@@ -0,0 +1,64 @@
+; All of these ands and shifts should be folded into rlwimi's
+; RUN: llvm-upgrade < %s | llvm-as | llc -march=ppc32 -o %t -f
+; RUN: not grep and %t
+; RUN: not grep srawi %t
+; RUN: not grep srwi %t
+; RUN: not grep slwi %t
+; RUN: grep rlwinm %t | wc -l | grep 8
+
+implementation ; Functions:
+
+int %test1(int %a) {
+entry:
+ %tmp.1 = and int %a, 268431360 ; <int> [#uses=1]
+ ret int %tmp.1
+}
+
+int %test2(int %a) {
+entry:
+ %tmp.1 = and int %a, -268435441 ; <int> [#uses=1]
+ ret int %tmp.1
+}
+
+int %test3(int %a) {
+entry:
+ %tmp.2 = shr int %a, ubyte 8 ; <int> [#uses=1]
+ %tmp.3 = and int %tmp.2, 255 ; <int> [#uses=1]
+ ret int %tmp.3
+}
+
+uint %test4(uint %a) {
+entry:
+ %tmp.3 = shr uint %a, ubyte 8 ; <uint> [#uses=1]
+ %tmp.4 = and uint %tmp.3, 255 ; <uint> [#uses=1]
+ ret uint %tmp.4
+}
+
+int %test5(int %a) {
+entry:
+ %tmp.2 = shl int %a, ubyte 8 ; <int> [#uses=1]
+ %tmp.3 = and int %tmp.2, -8388608 ; <int> [#uses=1]
+ ret int %tmp.3
+}
+
+int %test6(int %a) {
+entry:
+ %tmp.1 = and int %a, 65280 ; <int> [#uses=1]
+ %tmp.2 = shr int %tmp.1, ubyte 8 ; <uint> [#uses=1]
+ ret int %tmp.2
+}
+
+uint %test7(uint %a) {
+entry:
+ %tmp.1 = and uint %a, 65280 ; <uint> [#uses=1]
+ %tmp.2 = shr uint %tmp.1, ubyte 8 ; <uint> [#uses=1]
+ ret uint %tmp.2
+}
+
+int %test8(int %a) {
+entry:
+ %tmp.1 = and int %a, 16711680 ; <int> [#uses=1]
+ %tmp.2 = shl int %tmp.1, ubyte 8 ; <int> [#uses=1]
+ ret int %tmp.2
+}
+