Use "test reg,reg" in place of "cmp reg,0" for 64-bit operands. This was
previously only done for 32-bit and smaller operands.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42024 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/X86/cmp0.ll b/test/CodeGen/X86/cmp0.ll
new file mode 100644
index 0000000..f66f90c
--- /dev/null
+++ b/test/CodeGen/X86/cmp0.ll
@@ -0,0 +1,7 @@
+; RUN: llvm-as < %s | llc -march=x86-64 | grep -v cmp
+
+define i64 @foo(i64 %x) {
+ %t = icmp eq i64 %x, 0
+ %r = zext i1 %t to i64
+ ret i64 %r
+}