; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+mmx,+sse2 | FileCheck %s %SA = type <{ %union.anon, i32, [4 x i8], i8*, i8*, i8*, i32, [4 x i8] }> %union.anon = type { <1 x i64> } ; Check that extra movd (copy) instructions aren't generated. define i32 @test(%SA* %pSA, i16* %A, i32 %B, i32 %C, i32 %D, i8* %E) { entry: ; CHECK-LABEL: test ; CHECK: # %bb.0: ; CHECK-NEXT: pshufw ; CHECK-NEXT: movd ; CHECK-NOT: movd ; CHECK-NEXT: testl %shl = shl i32 1, %B %shl1 = shl i32 %C, %B %shl2 = shl i32 1, %D %v = getelementptr inbounds %SA, %SA* %pSA, i64 0, i32 0, i32 0 %v0 = load <1 x i64>, <1 x i64>* %v, align 8 %SA0 = getelementptr inbounds %SA, %SA* %pSA, i64 0, i32 1 %v1 = load i32, i32* %SA0, align 4 %SA1 = getelementptr inbounds %SA, %SA* %pSA, i64 0, i32 3 %v2 = load i8*, i8** %SA1, align 8 %SA2 = getelementptr inbounds %SA, %SA* %pSA, i64 0, i32 4 %v3 = load i8*, i8** %SA2, align 8 %v4 = bitcast <1 x i64> %v0 to <4 x i16> %v5 = bitcast <4 x i16> %v4 to x86_mmx %v6 = tail call x86_mmx @llvm.x86.sse.pshuf.w(x86_mmx %v5, i8 -18) %v7 = bitcast x86_mmx %v6 to <4 x i16> %v8 = bitcast <4 x i16> %v7 to <1 x i64> %v9 = extractelement <1 x i64> %v8, i32 0 %v10 = bitcast i64 %v9 to <2 x i32> %v11 = extractelement <2 x i32> %v10, i32 0 %cmp = icmp eq i32 %v11, 0 br i1 %cmp, label %if.A, label %if.B if.A: ; CHECK: %if.A ; CHECK-NEXT: movd ; CHECK-NEXT: psllq %pa = phi <1 x i64> [ %v8, %entry ], [ %vx, %if.C ] %v17 = extractelement <1 x i64> %pa, i32 0 %v18 = bitcast i64 %v17 to x86_mmx %v19 = tail call x86_mmx @llvm.x86.mmx.pslli.q(x86_mmx %v18, i32 %B) #2 %v20 = bitcast x86_mmx %v19 to i64 %v21 = insertelement <1 x i64> undef, i64 %v20, i32 0 %cmp3 = icmp eq i64 %v20, 0 br i1 %cmp3, label %if.C, label %merge if.B: %v34 = bitcast <1 x i64> %v8 to <4 x i16> %v35 = bitcast <4 x i16> %v34 to x86_mmx %v36 = tail call x86_mmx @llvm.x86.sse.pshuf.w(x86_mmx %v35, i8 -18) %v37 = bitcast x86_mmx %v36 to <4 x i16> %v38 = bitcast <4 x i16> %v37 to <1 x i64> br label %if.C if.C: %vx = phi <1 x i64> [ %v21, %if.A ], [ %v38, %if.B ] %cvt = bitcast <1 x i64> %vx to <2 x i32> %ex = extractelement <2 x i32> %cvt, i32 0 %cmp2 = icmp eq i32 %ex, 0 br i1 %cmp2, label %if.A, label %merge merge: ; CHECK: %merge ; CHECK-NOT: movd ; CHECK-NEXT: pshufw %vy = phi <1 x i64> [ %v21, %if.A ], [ %vx, %if.C ] %v130 = bitcast <1 x i64> %vy to <4 x i16> %v131 = bitcast <4 x i16> %v130 to x86_mmx %v132 = tail call x86_mmx @llvm.x86.sse.pshuf.w(x86_mmx %v131, i8 -18) %v133 = bitcast x86_mmx %v132 to <4 x i16> %v134 = bitcast <4 x i16> %v133 to <1 x i64> %v135 = extractelement <1 x i64> %v134, i32 0 %v136 = bitcast i64 %v135 to <2 x i32> %v137 = extractelement <2 x i32> %v136, i32 0 ret i32 %v137 } declare x86_mmx @llvm.x86.sse.pshuf.w(x86_mmx, i8) declare x86_mmx @llvm.x86.mmx.pslli.q(x86_mmx, i32)