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/rlwinm2.ll b/test/CodeGen/PowerPC/rlwinm2.ll
new file mode 100644
index 0000000..78127f1
--- /dev/null
+++ b/test/CodeGen/PowerPC/rlwinm2.ll
@@ -0,0 +1,28 @@
+; All of these ands and shifts should be folded into rlw[i]nm instructions
+; RUN: llvm-as < %s | 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 rlwnm %t | wc -l | grep 1
+; RUN: grep rlwinm %t | wc -l | grep 1
+
+define i32 @test1(i32 %X, i32 %Y) {
+entry:
+ %tmp = trunc i32 %Y to i8 ; <i8> [#uses=2]
+ %tmp1 = shl i32 %X, %Y ; <i32> [#uses=1]
+ %tmp2 = sub i32 32, %Y ; <i8> [#uses=1]
+ %tmp3 = lshr i32 %X, %tmp2 ; <i32> [#uses=1]
+ %tmp4 = or i32 %tmp1, %tmp3 ; <i32> [#uses=1]
+ %tmp6 = and i32 %tmp4, 127 ; <i32> [#uses=1]
+ ret i32 %tmp6
+}
+
+define i32 @test2(i32 %X) {
+entry:
+ %tmp1 = lshr i32 %X, 27 ; <i32> [#uses=1]
+ %tmp2 = shl i32 %X, 5 ; <i32> [#uses=1]
+ %tmp2.masked = and i32 %tmp2, 96 ; <i32> [#uses=1]
+ %tmp5 = or i32 %tmp1, %tmp2.masked ; <i32> [#uses=1]
+ ret i32 %tmp5
+}