1 ; RUN: llc < %s -march=x86 -mattr=+sse42 | FileCheck %s 2 3 define void @update(<3 x i8>* %dst, <3 x i8>* %src, i32 %n) nounwind { 4 entry: 5 ; CHECK-NOT: pextrw 6 ; CHECK: add 7 8 %dst.addr = alloca <3 x i8>* ; <<3 x i8>**> [#uses=2] 9 %src.addr = alloca <3 x i8>* ; <<3 x i8>**> [#uses=2] 10 %n.addr = alloca i32 ; <i32*> [#uses=2] 11 %i = alloca i32, align 4 ; <i32*> [#uses=6] 12 store <3 x i8>* %dst, <3 x i8>** %dst.addr 13 store <3 x i8>* %src, <3 x i8>** %src.addr 14 store i32 %n, i32* %n.addr 15 store i32 0, i32* %i 16 br label %forcond 17 18 forcond: ; preds = %forinc, %entry 19 %tmp = load i32* %i ; <i32> [#uses=1] 20 %tmp1 = load i32* %n.addr ; <i32> [#uses=1] 21 %cmp = icmp slt i32 %tmp, %tmp1 ; <i1> [#uses=1] 22 br i1 %cmp, label %forbody, label %afterfor 23 24 forbody: ; preds = %forcond 25 %tmp2 = load i32* %i ; <i32> [#uses=1] 26 %tmp3 = load <3 x i8>** %dst.addr ; <<3 x i8>*> [#uses=1] 27 %arrayidx = getelementptr <3 x i8>* %tmp3, i32 %tmp2 ; <<3 x i8>*> [#uses=1] 28 %tmp4 = load i32* %i ; <i32> [#uses=1] 29 %tmp5 = load <3 x i8>** %src.addr ; <<3 x i8>*> [#uses=1] 30 %arrayidx6 = getelementptr <3 x i8>* %tmp5, i32 %tmp4 ; <<3 x i8>*> [#uses=1] 31 %tmp7 = load <3 x i8>* %arrayidx6 ; <<3 x i8>> [#uses=1] 32 %add = add <3 x i8> %tmp7, < i8 1, i8 1, i8 1 > ; <<3 x i8>> [#uses=1] 33 store <3 x i8> %add, <3 x i8>* %arrayidx 34 br label %forinc 35 36 forinc: ; preds = %forbody 37 %tmp8 = load i32* %i ; <i32> [#uses=1] 38 %inc = add i32 %tmp8, 1 ; <i32> [#uses=1] 39 store i32 %inc, i32* %i 40 br label %forcond 41 42 afterfor: ; preds = %forcond 43 ret void 44 } 45
