1 ; RUN: llc < %s -march=x86-64 -mattr=+sse42 | FileCheck %s 2 ; CHECK: movdqa 3 ; CHECK: pmulld 4 ; CHECK: psubd 5 6 ; widen a v3i32 to v4i32 to do a vector multiple and a subtraction 7 8 define void @update(<3 x i32>* %dst, <3 x i32>* %src, i32 %n) nounwind { 9 entry: 10 %dst.addr = alloca <3 x i32>* ; <<3 x i32>**> [#uses=2] 11 %src.addr = alloca <3 x i32>* ; <<3 x i32>**> [#uses=2] 12 %n.addr = alloca i32 ; <i32*> [#uses=2] 13 %v = alloca <3 x i32>, align 16 ; <<3 x i32>*> [#uses=1] 14 %i = alloca i32, align 4 ; <i32*> [#uses=6] 15 store <3 x i32>* %dst, <3 x i32>** %dst.addr 16 store <3 x i32>* %src, <3 x i32>** %src.addr 17 store i32 %n, i32* %n.addr 18 store <3 x i32> < i32 1, i32 1, i32 1 >, <3 x i32>* %v 19 store i32 0, i32* %i 20 br label %forcond 21 22 forcond: ; preds = %forinc, %entry 23 %tmp = load i32* %i ; <i32> [#uses=1] 24 %tmp1 = load i32* %n.addr ; <i32> [#uses=1] 25 %cmp = icmp slt i32 %tmp, %tmp1 ; <i1> [#uses=1] 26 br i1 %cmp, label %forbody, label %afterfor 27 28 forbody: ; preds = %forcond 29 %tmp2 = load i32* %i ; <i32> [#uses=1] 30 %tmp3 = load <3 x i32>** %dst.addr ; <<3 x i32>*> [#uses=1] 31 %arrayidx = getelementptr <3 x i32>* %tmp3, i32 %tmp2 ; <<3 x i32>*> [#uses=1] 32 %tmp4 = load i32* %i ; <i32> [#uses=1] 33 %tmp5 = load <3 x i32>** %src.addr ; <<3 x i32>*> [#uses=1] 34 %arrayidx6 = getelementptr <3 x i32>* %tmp5, i32 %tmp4 ; <<3 x i32>*> [#uses=1] 35 %tmp7 = load <3 x i32>* %arrayidx6 ; <<3 x i32>> [#uses=1] 36 %mul = mul <3 x i32> %tmp7, < i32 4, i32 4, i32 4 > ; <<3 x i32>> [#uses=1] 37 %sub = sub <3 x i32> %mul, < i32 3, i32 3, i32 3 > ; <<3 x i32>> [#uses=1] 38 store <3 x i32> %sub, <3 x i32>* %arrayidx 39 br label %forinc 40 41 forinc: ; preds = %forbody 42 %tmp8 = load i32* %i ; <i32> [#uses=1] 43 %inc = add i32 %tmp8, 1 ; <i32> [#uses=1] 44 store i32 %inc, i32* %i 45 br label %forcond 46 47 afterfor: ; preds = %forcond 48 ret void 49 } 50 51
