(implicit EFLAGS)),
(IMUL32rmi8 addr:$src1, i32immSExt8:$src2)>;
+// Optimize multiple with overflow by 2.
+let AddedComplexity = 2 in {
+def : Pat<(parallel (X86smul_ovf GR16:$src1, 2),
+ (implicit EFLAGS)),
+ (ADD16rr GR16:$src1, GR16:$src1)>;
+
+def : Pat<(parallel (X86smul_ovf GR32:$src1, 2),
+ (implicit EFLAGS)),
+ (ADD32rr GR32:$src1, GR32:$src1)>;
+}
+
//===----------------------------------------------------------------------===//
// Floating Point Stack Support
//===----------------------------------------------------------------------===//