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/iabs.ll b/test/CodeGen/X86/iabs.ll
new file mode 100644
index 0000000..7c23645
--- /dev/null
+++ b/test/CodeGen/X86/iabs.ll
@@ -0,0 +1,17 @@
+; RUN: llvm-as < %s | llc -march=x86-64 -stats |& \
+; RUN: grep {6 .*Number of machine instrs printed}
+
+;; Integer absolute value, should produce something at least as good as:
+;; movl %edi, %eax
+;; sarl $31, %eax
+;; addl %eax, %edi
+;; xorl %eax, %edi
+;; movl %edi, %eax
+;; ret
+define i32 @test(i32 %a) {
+ %tmp1neg = sub i32 0, %a
+ %b = icmp sgt i32 %a, -1
+ %abs = select i1 %b, i32 %a, i32 %tmp1neg
+ ret i32 %abs
+}
+