--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/CodeGen/X86/scalar_widen_div.ll	Thu Dec 12 13:56:28 2013 +0900
@@ -0,0 +1,195 @@
+; RUN: llc < %s -march=x86-64 -mattr=+sse4.2 |  FileCheck %s
+
+; Verify when widening a divide/remainder operation, we only generate a
+; divide/rem per element since divide/remainder can trap.
+
+; CHECK: vectorDiv
+define void @vectorDiv (<2 x i32> addrspace(1)* %nsource, <2 x i32> addrspace(1)* %dsource, <2 x i32> addrspace(1)* %qdest) nounwind {
+; CHECK: idivq
+; CHECK: idivq
+; CHECK-NOT: idivl
+; CHECK: ret
+entry:
+  %nsource.addr = alloca <2 x i32> addrspace(1)*, align 4
+  %dsource.addr = alloca <2 x i32> addrspace(1)*, align 4
+  %qdest.addr = alloca <2 x i32> addrspace(1)*, align 4
+  %index = alloca i32, align 4
+  store <2 x i32> addrspace(1)* %nsource, <2 x i32> addrspace(1)** %nsource.addr
+  store <2 x i32> addrspace(1)* %dsource, <2 x i32> addrspace(1)** %dsource.addr
+  store <2 x i32> addrspace(1)* %qdest, <2 x i32> addrspace(1)** %qdest.addr
+  %tmp = load <2 x i32> addrspace(1)** %qdest.addr
+  %tmp1 = load i32* %index
+  %arrayidx = getelementptr <2 x i32> addrspace(1)* %tmp, i32 %tmp1
+  %tmp2 = load <2 x i32> addrspace(1)** %nsource.addr
+  %tmp3 = load i32* %index
+  %arrayidx4 = getelementptr <2 x i32> addrspace(1)* %tmp2, i32 %tmp3
+  %tmp5 = load <2 x i32> addrspace(1)* %arrayidx4
+  %tmp6 = load <2 x i32> addrspace(1)** %dsource.addr
+  %tmp7 = load i32* %index
+  %arrayidx8 = getelementptr <2 x i32> addrspace(1)* %tmp6, i32 %tmp7
+  %tmp9 = load <2 x i32> addrspace(1)* %arrayidx8
+  %tmp10 = sdiv <2 x i32> %tmp5, %tmp9
+  store <2 x i32> %tmp10, <2 x i32> addrspace(1)* %arrayidx
+  ret void
+}
+
+; CHECK: test_char_div
+define <3 x i8> @test_char_div(<3 x i8> %num, <3 x i8> %div) {
+; CHECK: idivb
+; CHECK: idivb
+; CHECK: idivb
+; CHECK-NOT: idivb
+; CHECK: ret
+  %div.r = sdiv <3 x i8> %num, %div
+  ret <3 x i8>  %div.r
+}
+
+; CHECK: test_uchar_div
+define <3 x i8> @test_uchar_div(<3 x i8> %num, <3 x i8> %div) {
+; CHECK: divb
+; CHECK: divb
+; CHECK: divb
+; CHECK-NOT: divb
+; CHECK: ret
+  %div.r = udiv <3 x i8> %num, %div
+  ret <3 x i8>  %div.r
+}
+
+; CHECK: test_short_div
+define <5 x i16> @test_short_div(<5 x i16> %num, <5 x i16> %div) {
+; CHECK: idivw
+; CHECK: idivw
+; CHECK: idivw
+; CHECK: idivw
+; CHECK: idivw
+; CHECK-NOT: idivw
+; CHECK: ret
+  %div.r = sdiv <5 x i16> %num, %div
+  ret <5 x i16>  %div.r
+}
+
+; CHECK: test_ushort_div
+define <4 x i16> @test_ushort_div(<4 x i16> %num, <4 x i16> %div) {
+; CHECK: divl
+; CHECK: divl
+; CHECK: divl
+; CHECK: divl
+; CHECK-NOT: divl
+; CHECK: ret
+  %div.r = udiv <4 x i16> %num, %div
+  ret <4 x i16>  %div.r
+}
+
+; CHECK: test_uint_div
+define <3 x i32> @test_uint_div(<3 x i32> %num, <3 x i32> %div) {
+; CHECK: divl
+; CHECK: divl
+; CHECK: divl
+; CHECK-NOT: divl
+; CHECK: ret
+  %div.r = udiv <3 x i32> %num, %div
+  ret <3 x i32>  %div.r
+}
+
+; CHECK: test_long_div
+define <3 x i64> @test_long_div(<3 x i64> %num, <3 x i64> %div) {
+; CHECK: idivq
+; CHECK: idivq
+; CHECK: idivq
+; CHECK-NOT: idivq
+; CHECK: ret
+  %div.r = sdiv <3 x i64> %num, %div
+  ret <3 x i64>  %div.r
+}
+
+; CHECK: test_ulong_div
+define <3 x i64> @test_ulong_div(<3 x i64> %num, <3 x i64> %div) {
+; CHECK: divq
+; CHECK: divq
+; CHECK: divq
+; CHECK-NOT: divq
+; CHECK: ret
+  %div.r = udiv <3 x i64> %num, %div
+  ret <3 x i64>  %div.r
+}
+
+; CHECK: test_char_rem
+define <4 x i8> @test_char_rem(<4 x i8> %num, <4 x i8> %rem) {
+; CHECK: idivl
+; CHECK: idivl
+; CHECK: idivl
+; CHECK: idivl
+; CHECK-NOT: idivl
+; CHECK: ret
+  %rem.r = srem <4 x i8> %num, %rem
+  ret <4 x i8>  %rem.r
+}
+
+; CHECK: test_short_rem
+define <5 x i16> @test_short_rem(<5 x i16> %num, <5 x i16> %rem) {
+; CHECK: idivw
+; CHECK: idivw
+; CHECK: idivw
+; CHECK: idivw
+; CHECK: idivw
+; CHECK-NOT: idivw
+; CHECK: ret
+  %rem.r = srem <5 x i16> %num, %rem
+  ret <5 x i16>  %rem.r
+}
+
+; CHECK: test_uint_rem
+define <4 x i32> @test_uint_rem(<4 x i32> %num, <4 x i32> %rem) {
+; CHECK: idivl
+; CHECK: idivl
+; CHECK: idivl
+; CHECK: idivl
+; CHECK-NOT: idivl
+; CHECK: ret
+  %rem.r = srem <4 x i32> %num, %rem
+  ret <4 x i32>  %rem.r
+}
+
+
+; CHECK: test_ulong_rem
+define <5 x i64> @test_ulong_rem(<5 x i64> %num, <5 x i64> %rem) {
+; CHECK: divq
+; CHECK: divq
+; CHECK: divq
+; CHECK: divq
+; CHECK: divq
+; CHECK-NOT: divq
+; CHECK: ret
+  %rem.r = urem <5 x i64> %num, %rem
+  ret <5 x i64>  %rem.r
+}
+
+; CHECK: test_int_div
+define void @test_int_div(<3 x i32>* %dest, <3 x i32>* %old, i32 %n) {
+; CHECK: idivl
+; CHECK: idivl
+; CHECK: idivl
+; CHECK-NOT: idivl
+; CHECK: ret
+entry:
+  %cmp13 = icmp sgt i32 %n, 0
+  br i1 %cmp13, label %bb.nph, label %for.end
+
+bb.nph:  
+  br label %for.body
+
+for.body:
+  %i.014 = phi i32 [ 0, %bb.nph ], [ %inc, %for.body ] 
+  %arrayidx11 = getelementptr <3 x i32>* %dest, i32 %i.014
+  %tmp4 = load <3 x i32>* %arrayidx11 ; <<3 x i32>> [#uses=1]
+  %arrayidx7 = getelementptr inbounds <3 x i32>* %old, i32 %i.014
+  %tmp8 = load <3 x i32>* %arrayidx7 ; <<3 x i32>> [#uses=1]
+  %div = sdiv <3 x i32> %tmp4, %tmp8
+  store <3 x i32> %div, <3 x i32>* %arrayidx11
+  %inc = add nsw i32 %i.014, 1
+  %exitcond = icmp eq i32 %inc, %n 
+  br i1 %exitcond, label %for.end, label %for.body
+
+for.end:                                          ; preds = %for.body, %entry
+  ret void
+}