1 files changed, 22 insertions, 0 deletions
diff --git a/test/CodeGen/X86/mulx64.ll b/test/CodeGen/X86/mulx64.ll
new file mode 100644
index 0000000..c59adc6
--- /dev/null
+++ b/test/CodeGen/X86/mulx64.ll
@@ -0,0 +1,22 @@
+; RUN: llc -mcpu=core-avx2 -march=x86-64 < %s | FileCheck %s
+
+define i128 @f1(i64 %a, i64 %b) {
+  %x = zext i64 %a to i128
+  %y = zext i64 %b to i128
+  %r = mul i128 %x, %y
+; CHECK: f1
+; CHECK: mulxq
+; CHECK: ret
+  ret i128 %r
+}
+
+define i128 @f2(i64 %a, i64* %p) {
+  %b = load i64* %p
+  %x = zext i64 %a to i128
+  %y = zext i64 %b to i128
+  %r = mul i128 %x, %y
+; CHECK: f1
+; CHECK: mulxq ({{.+}}), %{{.+}}, %{{.+}}
+; CHECK: ret
+  ret i128 %r
+}