; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py ; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+sse4.1 | FileCheck %s --check-prefixes=CHECK,SSE ; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx2 | FileCheck %s --check-prefixes=CHECK,AVX,AVX2-SLOW ; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx2,+fast-variable-shuffle | FileCheck %s --check-prefixes=CHECK,AVX,AVX2-FAST ; fold (srl 0, x) -> 0 define <4 x i32> @combine_vec_lshr_zero(<4 x i32> %x) { ; SSE-LABEL: combine_vec_lshr_zero: ; SSE: # %bb.0: ; SSE-NEXT: xorps %xmm0, %xmm0 ; SSE-NEXT: retq ; ; AVX-LABEL: combine_vec_lshr_zero: ; AVX: # %bb.0: ; AVX-NEXT: vxorps %xmm0, %xmm0, %xmm0 ; AVX-NEXT: retq %1 = lshr <4 x i32> zeroinitializer, %x ret <4 x i32> %1 } ; fold (srl x, c >= size(x)) -> undef define <4 x i32> @combine_vec_lshr_outofrange0(<4 x i32> %x) { ; CHECK-LABEL: combine_vec_lshr_outofrange0: ; CHECK: # %bb.0: ; CHECK-NEXT: retq %1 = lshr <4 x i32> %x, ret <4 x i32> %1 } define <4 x i32> @combine_vec_lshr_outofrange1(<4 x i32> %x) { ; CHECK-LABEL: combine_vec_lshr_outofrange1: ; CHECK: # %bb.0: ; CHECK-NEXT: retq %1 = lshr <4 x i32> %x, ret <4 x i32> %1 } define <4 x i32> @combine_vec_lshr_outofrange2(<4 x i32> %x) { ; CHECK-LABEL: combine_vec_lshr_outofrange2: ; CHECK: # %bb.0: ; CHECK-NEXT: retq %1 = lshr <4 x i32> %x, ret <4 x i32> %1 } ; fold (srl x, 0) -> x define <4 x i32> @combine_vec_lshr_by_zero(<4 x i32> %x) { ; CHECK-LABEL: combine_vec_lshr_by_zero: ; CHECK: # %bb.0: ; CHECK-NEXT: retq %1 = lshr <4 x i32> %x, zeroinitializer ret <4 x i32> %1 } ; if (srl x, c) is known to be zero, return 0 define <4 x i32> @combine_vec_lshr_known_zero0(<4 x i32> %x) { ; SSE-LABEL: combine_vec_lshr_known_zero0: ; SSE: # %bb.0: ; SSE-NEXT: xorps %xmm0, %xmm0 ; SSE-NEXT: retq ; ; AVX-LABEL: combine_vec_lshr_known_zero0: ; AVX: # %bb.0: ; AVX-NEXT: vxorps %xmm0, %xmm0, %xmm0 ; AVX-NEXT: retq %1 = and <4 x i32> %x, %2 = lshr <4 x i32> %1, ret <4 x i32> %2 } define <4 x i32> @combine_vec_lshr_known_zero1(<4 x i32> %x) { ; SSE-LABEL: combine_vec_lshr_known_zero1: ; SSE: # %bb.0: ; SSE-NEXT: xorps %xmm0, %xmm0 ; SSE-NEXT: retq ; ; AVX-LABEL: combine_vec_lshr_known_zero1: ; AVX: # %bb.0: ; AVX-NEXT: vpbroadcastd {{.*#+}} xmm1 = [15,15,15,15] ; AVX-NEXT: vpand %xmm1, %xmm0, %xmm0 ; AVX-NEXT: vpsrlvd {{.*}}(%rip), %xmm0, %xmm0 ; AVX-NEXT: retq %1 = and <4 x i32> %x, %2 = lshr <4 x i32> %1, ret <4 x i32> %2 } ; fold (srl (srl x, c1), c2) -> (srl x, (add c1, c2)) define <4 x i32> @combine_vec_lshr_lshr0(<4 x i32> %x) { ; SSE-LABEL: combine_vec_lshr_lshr0: ; SSE: # %bb.0: ; SSE-NEXT: psrld $6, %xmm0 ; SSE-NEXT: retq ; ; AVX-LABEL: combine_vec_lshr_lshr0: ; AVX: # %bb.0: ; AVX-NEXT: vpsrld $6, %xmm0, %xmm0 ; AVX-NEXT: retq %1 = lshr <4 x i32> %x, %2 = lshr <4 x i32> %1, ret <4 x i32> %2 } define <4 x i32> @combine_vec_lshr_lshr1(<4 x i32> %x) { ; SSE-LABEL: combine_vec_lshr_lshr1: ; SSE: # %bb.0: ; SSE-NEXT: movdqa %xmm0, %xmm1 ; SSE-NEXT: psrld $10, %xmm1 ; SSE-NEXT: movdqa %xmm0, %xmm2 ; SSE-NEXT: psrld $6, %xmm2 ; SSE-NEXT: pblendw {{.*#+}} xmm2 = xmm2[0,1,2,3],xmm1[4,5,6,7] ; SSE-NEXT: movdqa %xmm0, %xmm1 ; SSE-NEXT: psrld $8, %xmm1 ; SSE-NEXT: psrld $4, %xmm0 ; SSE-NEXT: pblendw {{.*#+}} xmm0 = xmm0[0,1,2,3],xmm1[4,5,6,7] ; SSE-NEXT: pblendw {{.*#+}} xmm0 = xmm0[0,1],xmm2[2,3],xmm0[4,5],xmm2[6,7] ; SSE-NEXT: retq ; ; AVX-LABEL: combine_vec_lshr_lshr1: ; AVX: # %bb.0: ; AVX-NEXT: vpsrlvd {{.*}}(%rip), %xmm0, %xmm0 ; AVX-NEXT: retq %1 = lshr <4 x i32> %x, %2 = lshr <4 x i32> %1, ret <4 x i32> %2 } ; fold (srl (srl x, c1), c2) -> 0 define <4 x i32> @combine_vec_lshr_lshr_zero0(<4 x i32> %x) { ; SSE-LABEL: combine_vec_lshr_lshr_zero0: ; SSE: # %bb.0: ; SSE-NEXT: xorps %xmm0, %xmm0 ; SSE-NEXT: retq ; ; AVX-LABEL: combine_vec_lshr_lshr_zero0: ; AVX: # %bb.0: ; AVX-NEXT: vxorps %xmm0, %xmm0, %xmm0 ; AVX-NEXT: retq %1 = lshr <4 x i32> %x, %2 = lshr <4 x i32> %1, ret <4 x i32> %2 } define <4 x i32> @combine_vec_lshr_lshr_zero1(<4 x i32> %x) { ; SSE-LABEL: combine_vec_lshr_lshr_zero1: ; SSE: # %bb.0: ; SSE-NEXT: xorps %xmm0, %xmm0 ; SSE-NEXT: retq ; ; AVX-LABEL: combine_vec_lshr_lshr_zero1: ; AVX: # %bb.0: ; AVX-NEXT: vxorps %xmm0, %xmm0, %xmm0 ; AVX-NEXT: retq %1 = lshr <4 x i32> %x, %2 = lshr <4 x i32> %1, ret <4 x i32> %2 } ; fold (srl (trunc (srl x, c1)), c2) -> (trunc (srl x, (add c1, c2))) define <4 x i32> @combine_vec_lshr_trunc_lshr0(<4 x i64> %x) { ; SSE-LABEL: combine_vec_lshr_trunc_lshr0: ; SSE: # %bb.0: ; SSE-NEXT: psrlq $48, %xmm1 ; SSE-NEXT: psrlq $48, %xmm0 ; SSE-NEXT: packusdw %xmm1, %xmm0 ; SSE-NEXT: retq ; ; AVX-LABEL: combine_vec_lshr_trunc_lshr0: ; AVX: # %bb.0: ; AVX-NEXT: vpsrlq $48, %ymm0, %ymm0 ; AVX-NEXT: vextracti128 $1, %ymm0, %xmm1 ; AVX-NEXT: vpackusdw %xmm1, %xmm0, %xmm0 ; AVX-NEXT: vzeroupper ; AVX-NEXT: retq %1 = lshr <4 x i64> %x, %2 = trunc <4 x i64> %1 to <4 x i32> %3 = lshr <4 x i32> %2, ret <4 x i32> %3 } define <4 x i32> @combine_vec_lshr_trunc_lshr1(<4 x i64> %x) { ; SSE-LABEL: combine_vec_lshr_trunc_lshr1: ; SSE: # %bb.0: ; SSE-NEXT: movdqa %xmm1, %xmm2 ; SSE-NEXT: psrlq $35, %xmm2 ; SSE-NEXT: psrlq $34, %xmm1 ; SSE-NEXT: pblendw {{.*#+}} xmm1 = xmm1[0,1,2,3],xmm2[4,5,6,7] ; SSE-NEXT: movdqa %xmm0, %xmm2 ; SSE-NEXT: psrlq $33, %xmm2 ; SSE-NEXT: psrlq $32, %xmm0 ; SSE-NEXT: pblendw {{.*#+}} xmm2 = xmm0[0,1,2,3],xmm2[4,5,6,7] ; SSE-NEXT: shufps {{.*#+}} xmm2 = xmm2[0,2],xmm1[0,2] ; SSE-NEXT: movaps %xmm2, %xmm1 ; SSE-NEXT: psrld $19, %xmm1 ; SSE-NEXT: movaps %xmm2, %xmm3 ; SSE-NEXT: psrld $17, %xmm3 ; SSE-NEXT: pblendw {{.*#+}} xmm3 = xmm3[0,1,2,3],xmm1[4,5,6,7] ; SSE-NEXT: psrld $18, %xmm2 ; SSE-NEXT: psrld $16, %xmm0 ; SSE-NEXT: pblendw {{.*#+}} xmm0 = xmm0[0,1,2,3],xmm2[4,5,6,7] ; SSE-NEXT: pblendw {{.*#+}} xmm0 = xmm0[0,1],xmm3[2,3],xmm0[4,5],xmm3[6,7] ; SSE-NEXT: retq ; ; AVX2-SLOW-LABEL: combine_vec_lshr_trunc_lshr1: ; AVX2-SLOW: # %bb.0: ; AVX2-SLOW-NEXT: vpsrlvq {{.*}}(%rip), %ymm0, %ymm0 ; AVX2-SLOW-NEXT: vextracti128 $1, %ymm0, %xmm1 ; AVX2-SLOW-NEXT: vshufps {{.*#+}} xmm0 = xmm0[0,2],xmm1[0,2] ; AVX2-SLOW-NEXT: vpsrlvd {{.*}}(%rip), %xmm0, %xmm0 ; AVX2-SLOW-NEXT: vzeroupper ; AVX2-SLOW-NEXT: retq ; ; AVX2-FAST-LABEL: combine_vec_lshr_trunc_lshr1: ; AVX2-FAST: # %bb.0: ; AVX2-FAST-NEXT: vpsrlvq {{.*}}(%rip), %ymm0, %ymm0 ; AVX2-FAST-NEXT: vmovdqa {{.*#+}} ymm1 = <0,2,4,6,u,u,u,u> ; AVX2-FAST-NEXT: vpermd %ymm0, %ymm1, %ymm0 ; AVX2-FAST-NEXT: vpsrlvd {{.*}}(%rip), %xmm0, %xmm0 ; AVX2-FAST-NEXT: vzeroupper ; AVX2-FAST-NEXT: retq %1 = lshr <4 x i64> %x, %2 = trunc <4 x i64> %1 to <4 x i32> %3 = lshr <4 x i32> %2, ret <4 x i32> %3 } ; fold (srl (trunc (srl x, c1)), c2) -> 0 define <4 x i32> @combine_vec_lshr_trunc_lshr_zero0(<4 x i64> %x) { ; SSE-LABEL: combine_vec_lshr_trunc_lshr_zero0: ; SSE: # %bb.0: ; SSE-NEXT: xorps %xmm0, %xmm0 ; SSE-NEXT: retq ; ; AVX-LABEL: combine_vec_lshr_trunc_lshr_zero0: ; AVX: # %bb.0: ; AVX-NEXT: vxorps %xmm0, %xmm0, %xmm0 ; AVX-NEXT: retq %1 = lshr <4 x i64> %x, %2 = trunc <4 x i64> %1 to <4 x i32> %3 = lshr <4 x i32> %2, ret <4 x i32> %3 } define <4 x i32> @combine_vec_lshr_trunc_lshr_zero1(<4 x i64> %x) { ; SSE-LABEL: combine_vec_lshr_trunc_lshr_zero1: ; SSE: # %bb.0: ; SSE-NEXT: xorps %xmm0, %xmm0 ; SSE-NEXT: retq ; ; AVX-LABEL: combine_vec_lshr_trunc_lshr_zero1: ; AVX: # %bb.0: ; AVX-NEXT: vpsrlvq {{.*}}(%rip), %ymm0, %ymm0 ; AVX-NEXT: vextracti128 $1, %ymm0, %xmm1 ; AVX-NEXT: vpackusdw %xmm1, %xmm0, %xmm0 ; AVX-NEXT: vpsrlvd {{.*}}(%rip), %xmm0, %xmm0 ; AVX-NEXT: vzeroupper ; AVX-NEXT: retq %1 = lshr <4 x i64> %x, %2 = trunc <4 x i64> %1 to <4 x i32> %3 = lshr <4 x i32> %2, ret <4 x i32> %3 } ; fold (srl (shl x, c), c) -> (and x, cst2) define <4 x i32> @combine_vec_lshr_shl_mask0(<4 x i32> %x) { ; SSE-LABEL: combine_vec_lshr_shl_mask0: ; SSE: # %bb.0: ; SSE-NEXT: andps {{.*}}(%rip), %xmm0 ; SSE-NEXT: retq ; ; AVX-LABEL: combine_vec_lshr_shl_mask0: ; AVX: # %bb.0: ; AVX-NEXT: vbroadcastss {{.*#+}} xmm1 = [1073741823,1073741823,1073741823,1073741823] ; AVX-NEXT: vandps %xmm1, %xmm0, %xmm0 ; AVX-NEXT: retq %1 = shl <4 x i32> %x, %2 = lshr <4 x i32> %1, ret <4 x i32> %2 } define <4 x i32> @combine_vec_lshr_shl_mask1(<4 x i32> %x) { ; SSE-LABEL: combine_vec_lshr_shl_mask1: ; SSE: # %bb.0: ; SSE-NEXT: andps {{.*}}(%rip), %xmm0 ; SSE-NEXT: retq ; ; AVX-LABEL: combine_vec_lshr_shl_mask1: ; AVX: # %bb.0: ; AVX-NEXT: vandps {{.*}}(%rip), %xmm0, %xmm0 ; AVX-NEXT: retq %1 = shl <4 x i32> %x, %2 = lshr <4 x i32> %1, ret <4 x i32> %2 } ; fold (srl (sra X, Y), 31) -> (srl X, 31) define <4 x i32> @combine_vec_lshr_ashr_sign(<4 x i32> %x, <4 x i32> %y) { ; SSE-LABEL: combine_vec_lshr_ashr_sign: ; SSE: # %bb.0: ; SSE-NEXT: psrld $31, %xmm0 ; SSE-NEXT: retq ; ; AVX-LABEL: combine_vec_lshr_ashr_sign: ; AVX: # %bb.0: ; AVX-NEXT: vpsrld $31, %xmm0, %xmm0 ; AVX-NEXT: retq %1 = ashr <4 x i32> %x, %y %2 = lshr <4 x i32> %1, ret <4 x i32> %2 } ; fold (srl (ctlz x), "5") -> x iff x has one bit set (the low bit). define <4 x i32> @combine_vec_lshr_lzcnt_bit0(<4 x i32> %x) { ; SSE-LABEL: combine_vec_lshr_lzcnt_bit0: ; SSE: # %bb.0: ; SSE-NEXT: pand {{.*}}(%rip), %xmm0 ; SSE-NEXT: psrld $4, %xmm0 ; SSE-NEXT: pxor {{.*}}(%rip), %xmm0 ; SSE-NEXT: retq ; ; AVX-LABEL: combine_vec_lshr_lzcnt_bit0: ; AVX: # %bb.0: ; AVX-NEXT: vpbroadcastd {{.*#+}} xmm1 = [16,16,16,16] ; AVX-NEXT: vpand %xmm1, %xmm0, %xmm0 ; AVX-NEXT: vpsrld $4, %xmm0, %xmm0 ; AVX-NEXT: vpbroadcastd {{.*#+}} xmm1 = [1,1,1,1] ; AVX-NEXT: vpxor %xmm1, %xmm0, %xmm0 ; AVX-NEXT: retq %1 = and <4 x i32> %x, %2 = call <4 x i32> @llvm.ctlz.v4i32(<4 x i32> %1, i1 0) %3 = lshr <4 x i32> %2, ret <4 x i32> %3 } define <4 x i32> @combine_vec_lshr_lzcnt_bit1(<4 x i32> %x) { ; SSE-LABEL: combine_vec_lshr_lzcnt_bit1: ; SSE: # %bb.0: ; SSE-NEXT: pand {{.*}}(%rip), %xmm0 ; SSE-NEXT: movdqa {{.*#+}} xmm2 = [4,3,2,2,1,1,1,1,0,0,0,0,0,0,0,0] ; SSE-NEXT: movdqa %xmm2, %xmm3 ; SSE-NEXT: pshufb %xmm0, %xmm3 ; SSE-NEXT: movdqa %xmm0, %xmm1 ; SSE-NEXT: psrlw $4, %xmm1 ; SSE-NEXT: pxor %xmm4, %xmm4 ; SSE-NEXT: pshufb %xmm1, %xmm2 ; SSE-NEXT: pcmpeqb %xmm4, %xmm1 ; SSE-NEXT: pand %xmm3, %xmm1 ; SSE-NEXT: paddb %xmm2, %xmm1 ; SSE-NEXT: movdqa %xmm0, %xmm2 ; SSE-NEXT: pcmpeqb %xmm4, %xmm2 ; SSE-NEXT: psrlw $8, %xmm2 ; SSE-NEXT: pand %xmm1, %xmm2 ; SSE-NEXT: psrlw $8, %xmm1 ; SSE-NEXT: paddw %xmm2, %xmm1 ; SSE-NEXT: pcmpeqw %xmm4, %xmm0 ; SSE-NEXT: psrld $16, %xmm0 ; SSE-NEXT: pand %xmm1, %xmm0 ; SSE-NEXT: psrld $16, %xmm1 ; SSE-NEXT: paddd %xmm0, %xmm1 ; SSE-NEXT: psrld $5, %xmm1 ; SSE-NEXT: movdqa %xmm1, %xmm0 ; SSE-NEXT: retq ; ; AVX-LABEL: combine_vec_lshr_lzcnt_bit1: ; AVX: # %bb.0: ; AVX-NEXT: vpand {{.*}}(%rip), %xmm0, %xmm0 ; AVX-NEXT: vmovdqa {{.*#+}} xmm1 = [4,3,2,2,1,1,1,1,0,0,0,0,0,0,0,0] ; AVX-NEXT: vpshufb %xmm0, %xmm1, %xmm2 ; AVX-NEXT: vpsrlw $4, %xmm0, %xmm3 ; AVX-NEXT: vpxor %xmm4, %xmm4, %xmm4 ; AVX-NEXT: vpcmpeqb %xmm4, %xmm3, %xmm5 ; AVX-NEXT: vpand %xmm5, %xmm2, %xmm2 ; AVX-NEXT: vpshufb %xmm3, %xmm1, %xmm1 ; AVX-NEXT: vpaddb %xmm1, %xmm2, %xmm1 ; AVX-NEXT: vpcmpeqb %xmm4, %xmm0, %xmm2 ; AVX-NEXT: vpsrlw $8, %xmm2, %xmm2 ; AVX-NEXT: vpand %xmm2, %xmm1, %xmm2 ; AVX-NEXT: vpsrlw $8, %xmm1, %xmm1 ; AVX-NEXT: vpaddw %xmm2, %xmm1, %xmm1 ; AVX-NEXT: vpcmpeqw %xmm4, %xmm0, %xmm0 ; AVX-NEXT: vpsrld $16, %xmm0, %xmm0 ; AVX-NEXT: vpand %xmm0, %xmm1, %xmm0 ; AVX-NEXT: vpsrld $16, %xmm1, %xmm1 ; AVX-NEXT: vpaddd %xmm0, %xmm1, %xmm0 ; AVX-NEXT: vpsrld $5, %xmm0, %xmm0 ; AVX-NEXT: retq %1 = and <4 x i32> %x, %2 = call <4 x i32> @llvm.ctlz.v4i32(<4 x i32> %1, i1 0) %3 = lshr <4 x i32> %2, ret <4 x i32> %3 } declare <4 x i32> @llvm.ctlz.v4i32(<4 x i32>, i1) ; fold (srl x, (trunc (and y, c))) -> (srl x, (and (trunc y), (trunc c))). define <4 x i32> @combine_vec_lshr_trunc_and(<4 x i32> %x, <4 x i64> %y) { ; SSE-LABEL: combine_vec_lshr_trunc_and: ; SSE: # %bb.0: ; SSE-NEXT: shufps {{.*#+}} xmm1 = xmm1[0,2],xmm2[0,2] ; SSE-NEXT: andps {{.*}}(%rip), %xmm1 ; SSE-NEXT: pshuflw {{.*#+}} xmm2 = xmm1[2,3,3,3,4,5,6,7] ; SSE-NEXT: movdqa %xmm0, %xmm3 ; SSE-NEXT: psrld %xmm2, %xmm3 ; SSE-NEXT: pshufd {{.*#+}} xmm2 = xmm1[2,3,2,3] ; SSE-NEXT: pshuflw {{.*#+}} xmm4 = xmm2[2,3,3,3,4,5,6,7] ; SSE-NEXT: movdqa %xmm0, %xmm5 ; SSE-NEXT: psrld %xmm4, %xmm5 ; SSE-NEXT: pblendw {{.*#+}} xmm5 = xmm3[0,1,2,3],xmm5[4,5,6,7] ; SSE-NEXT: pshuflw {{.*#+}} xmm1 = xmm1[0,1,1,1,4,5,6,7] ; SSE-NEXT: movdqa %xmm0, %xmm3 ; SSE-NEXT: psrld %xmm1, %xmm3 ; SSE-NEXT: pshuflw {{.*#+}} xmm1 = xmm2[0,1,1,1,4,5,6,7] ; SSE-NEXT: psrld %xmm1, %xmm0 ; SSE-NEXT: pblendw {{.*#+}} xmm0 = xmm3[0,1,2,3],xmm0[4,5,6,7] ; SSE-NEXT: pblendw {{.*#+}} xmm0 = xmm0[0,1],xmm5[2,3],xmm0[4,5],xmm5[6,7] ; SSE-NEXT: retq ; ; AVX2-SLOW-LABEL: combine_vec_lshr_trunc_and: ; AVX2-SLOW: # %bb.0: ; AVX2-SLOW-NEXT: vextractf128 $1, %ymm1, %xmm2 ; AVX2-SLOW-NEXT: vshufps {{.*#+}} xmm1 = xmm1[0,2],xmm2[0,2] ; AVX2-SLOW-NEXT: vandps {{.*}}(%rip), %xmm1, %xmm1 ; AVX2-SLOW-NEXT: vpsrlvd %xmm1, %xmm0, %xmm0 ; AVX2-SLOW-NEXT: vzeroupper ; AVX2-SLOW-NEXT: retq ; ; AVX2-FAST-LABEL: combine_vec_lshr_trunc_and: ; AVX2-FAST: # %bb.0: ; AVX2-FAST-NEXT: vmovdqa {{.*#+}} ymm2 = <0,2,4,6,u,u,u,u> ; AVX2-FAST-NEXT: vpermd %ymm1, %ymm2, %ymm1 ; AVX2-FAST-NEXT: vpand {{.*}}(%rip), %xmm1, %xmm1 ; AVX2-FAST-NEXT: vpsrlvd %xmm1, %xmm0, %xmm0 ; AVX2-FAST-NEXT: vzeroupper ; AVX2-FAST-NEXT: retq %1 = and <4 x i64> %y, %2 = trunc <4 x i64> %1 to <4 x i32> %3 = lshr <4 x i32> %x, %2 ret <4 x i32> %3 }