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/Transforms/InstCombine/apint-shift-simplify.ll b/test/Transforms/InstCombine/apint-shift-simplify.ll
new file mode 100644
index 0000000..4c352cf
--- /dev/null
+++ b/test/Transforms/InstCombine/apint-shift-simplify.ll
@@ -0,0 +1,23 @@
+; RUN: llvm-as < %s | opt -instcombine | llvm-dis | \
+; RUN: egrep {shl|lshr|ashr} | wc -l | grep 3
+
+define i41 @test0(i41 %A, i41 %B, i41 %C) {
+ %X = shl i41 %A, %C
+ %Y = shl i41 %B, %C
+ %Z = and i41 %X, %Y
+ ret i41 %Z
+}
+
+define i57 @test1(i57 %A, i57 %B, i57 %C) {
+ %X = lshr i57 %A, %C
+ %Y = lshr i57 %B, %C
+ %Z = or i57 %X, %Y
+ ret i57 %Z
+}
+
+define i49 @test2(i49 %A, i49 %B, i49 %C) {
+ %X = ashr i49 %A, %C
+ %Y = ashr i49 %B, %C
+ %Z = xor i49 %X, %Y
+ ret i49 %Z
+}