1 files changed, 25 insertions, 0 deletions
diff --git a/test/CodeGen/X86/commute-two-addr.ll b/test/CodeGen/X86/commute-two-addr.ll
new file mode 100644
index 0000000..462b31e
--- /dev/null
+++ b/test/CodeGen/X86/commute-two-addr.ll
@@ -0,0 +1,25 @@
+; The register allocator can commute two-address instructions to avoid
+; insertion of register-register copies.
+
+; Make sure there are only 3 mov's for each testcase
+; RUN: llvm-upgrade < %s | llvm-as | llc -march=x86 -x86-asm-syntax=intel | \
+; RUN:   grep {mov } | wc -l | grep 6
+
+
+target triple = "i686-pc-linux-gnu"
+
+%G = external global int
+
+declare void %ext(int)
+
+int %add_test(int %X, int %Y) {
+	%Z = add int %X, %Y      ;; Last use of Y, but not of X.
+	store int %Z, int* %G
+	ret int %X
+}
+
+int %xor_test(int %X, int %Y) {
+	%Z = xor int %X, %Y      ;; Last use of Y, but not of X.
+	store int %Z, int* %G
+	ret int %X
+}