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; RUN: llc < %s -march=x86 -mattr=+sse42 -disable-mmx | FileCheck %s
; Widen a v3i8 to v16i8 to use a vector add
define void @update(<3 x i8>* %dst, <3 x i8>* %src, i32 %n) nounwind {
entry:
; CHECK-NOT: pextrw
; CHECK: paddb
; CHECK: pextrb
%dst.addr = alloca <3 x i8>* ; <<3 x i8>**> [#uses=2]
%src.addr = alloca <3 x i8>* ; <<3 x i8>**> [#uses=2]
%n.addr = alloca i32 ; <i32*> [#uses=2]
%i = alloca i32, align 4 ; <i32*> [#uses=6]
store <3 x i8>* %dst, <3 x i8>** %dst.addr
store <3 x i8>* %src, <3 x i8>** %src.addr
store i32 %n, i32* %n.addr
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 <3 x i8>** %dst.addr ; <<3 x i8>*> [#uses=1]
%arrayidx = getelementptr <3 x i8>* %tmp3, i32 %tmp2 ; <<3 x i8>*> [#uses=1]
%tmp4 = load i32* %i ; <i32> [#uses=1]
%tmp5 = load <3 x i8>** %src.addr ; <<3 x i8>*> [#uses=1]
%arrayidx6 = getelementptr <3 x i8>* %tmp5, i32 %tmp4 ; <<3 x i8>*> [#uses=1]
%tmp7 = load <3 x i8>* %arrayidx6 ; <<3 x i8>> [#uses=1]
%add = add <3 x i8> %tmp7, < i8 1, i8 1, i8 1 > ; <<3 x i8>> [#uses=1]
store <3 x i8> %add, <3 x i8>* %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
}
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