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/X86/loop-strength-reduce.ll b/test/CodeGen/X86/loop-strength-reduce.ll
new file mode 100644
index 0000000..eb1eee8
--- /dev/null
+++ b/test/CodeGen/X86/loop-strength-reduce.ll
@@ -0,0 +1,29 @@
+; RUN: llvm-upgrade < %s | llvm-as | llc -march=x86 | \
+; RUN: grep {A(} | wc -l | grep 1
+;
+; Make sure the common loop invariant _A(reg) is hoisted up to preheader.
+
+%A = internal global [16 x [16 x int]] zeroinitializer, align 32
+
+void %test(int %row, int %N.in) {
+entry:
+ %N = cast int %N.in to uint
+ %tmp5 = setgt int %N.in, 0
+ br bool %tmp5, label %cond_true, label %return
+
+cond_true:
+ %indvar = phi uint [ 0, %entry ], [ %indvar.next, %cond_true ]
+ %i.0.0 = cast uint %indvar to int
+ %tmp2 = add int %i.0.0, 1
+ %tmp = getelementptr [16 x [16 x int]]* %A, int 0, int %row, int %tmp2
+ store int 4, int* %tmp
+ %tmp5 = add int %i.0.0, 2
+ %tmp7 = getelementptr [16 x [16 x int]]* %A, int 0, int %row, int %tmp5
+ store int 5, int* %tmp7
+ %indvar.next = add uint %indvar, 1
+ %exitcond = seteq uint %indvar.next, %N
+ br bool %exitcond, label %return, label %cond_true
+
+return:
+ ret void
+}