; RUN: llc < %s -march=x86-64 -mattr=+sse42 | FileCheck %s ; CHECK: psubw ; CHECK-NEXT: pmullw ; Widen a v5i16 to v8i16 to do a vector sub and multiple define void @update(<5 x i16>* %dst, <5 x i16>* %src, i32 %n) nounwind { entry: %dst.addr = alloca <5 x i16>* ; <<5 x i16>**> [#uses=2] %src.addr = alloca <5 x i16>* ; <<5 x i16>**> [#uses=2] %n.addr = alloca i32 ; <i32*> [#uses=2] %v = alloca <5 x i16>, align 16 ; <<5 x i16>*> [#uses=1] %i = alloca i32, align 4 ; <i32*> [#uses=6] store <5 x i16>* %dst, <5 x i16>** %dst.addr store <5 x i16>* %src, <5 x i16>** %src.addr store i32 %n, i32* %n.addr store <5 x i16> < i16 1, i16 1, i16 1, i16 0, i16 0 >, <5 x i16>* %v store i32 0, i32* %i br label %forcond forcond: ; preds = %forinc, %entry %tmp = load i32* %i ; <i32> [#uses=1] %tmp1 = load i32* %n.addr ; <i32> [#uses=1] %cmp = icmp slt i32 %tmp, %tmp1 ; <i1> [#uses=1] br i1 %cmp, label %forbody, label %afterfor forbody: ; preds = %forcond %tmp2 = load i32* %i ; <i32> [#uses=1] %tmp3 = load <5 x i16>** %dst.addr ; <<5 x i16>*> [#uses=1] %arrayidx = getelementptr <5 x i16>* %tmp3, i32 %tmp2 ; <<5 x i16>*> [#uses=1] %tmp4 = load i32* %i ; <i32> [#uses=1] %tmp5 = load <5 x i16>** %src.addr ; <<5 x i16>*> [#uses=1] %arrayidx6 = getelementptr <5 x i16>* %tmp5, i32 %tmp4 ; <<5 x i16>*> [#uses=1] %tmp7 = load <5 x i16>* %arrayidx6 ; <<5 x i16>> [#uses=1] %sub = sub <5 x i16> %tmp7, < i16 271, i16 271, i16 271, i16 271, i16 271 > ; <<5 x i16>> [#uses=1] %mul = mul <5 x i16> %sub, < i16 2, i16 2, i16 2, i16 2, i16 2 > ; <<5 x i16>> [#uses=1] store <5 x i16> %mul, <5 x i16>* %arrayidx br label %forinc forinc: ; preds = %forbody %tmp8 = load i32* %i ; <i32> [#uses=1] %inc = add i32 %tmp8, 1 ; <i32> [#uses=1] store i32 %inc, i32* %i br label %forcond afterfor: ; preds = %forcond ret void }