| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc -mtriple=aarch64-unknown-linux-gnu < %s | FileCheck %s |
| |
| ; Tests BuildUREMEqFold for 4 x i32 splat vectors with odd divisor. |
| ; See urem-seteq.ll for justification behind constants emitted. |
| define <4 x i32> @test_urem_odd_vec_i32(<4 x i32> %X) nounwind readnone { |
| ; CHECK-LABEL: test_urem_odd_vec_i32: |
| ; CHECK: // %bb.0: |
| ; CHECK-NEXT: mov w8, #52429 |
| ; CHECK-NEXT: movk w8, #52428, lsl #16 |
| ; CHECK-NEXT: dup v2.4s, w8 |
| ; CHECK-NEXT: umull2 v3.2d, v0.4s, v2.4s |
| ; CHECK-NEXT: umull v2.2d, v0.2s, v2.2s |
| ; CHECK-NEXT: uzp2 v2.4s, v2.4s, v3.4s |
| ; CHECK-NEXT: movi v1.4s, #5 |
| ; CHECK-NEXT: ushr v2.4s, v2.4s, #2 |
| ; CHECK-NEXT: mls v0.4s, v2.4s, v1.4s |
| ; CHECK-NEXT: cmeq v0.4s, v0.4s, #0 |
| ; CHECK-NEXT: movi v1.4s, #1 |
| ; CHECK-NEXT: and v0.16b, v0.16b, v1.16b |
| ; CHECK-NEXT: ret |
| %urem = urem <4 x i32> %X, <i32 5, i32 5, i32 5, i32 5> |
| %cmp = icmp eq <4 x i32> %urem, <i32 0, i32 0, i32 0, i32 0> |
| %ret = zext <4 x i1> %cmp to <4 x i32> |
| ret <4 x i32> %ret |
| } |
| |
| ; Like test_urem_odd_vec_i32, but with 8 x i16 vectors. |
| define <8 x i16> @test_urem_odd_vec_i16(<8 x i16> %X) nounwind readnone { |
| ; CHECK-LABEL: test_urem_odd_vec_i16: |
| ; CHECK: // %bb.0: |
| ; CHECK-NEXT: mov w8, #52429 |
| ; CHECK-NEXT: dup v2.8h, w8 |
| ; CHECK-NEXT: umull2 v3.4s, v0.8h, v2.8h |
| ; CHECK-NEXT: umull v2.4s, v0.4h, v2.4h |
| ; CHECK-NEXT: uzp2 v2.8h, v2.8h, v3.8h |
| ; CHECK-NEXT: movi v1.8h, #5 |
| ; CHECK-NEXT: ushr v2.8h, v2.8h, #2 |
| ; CHECK-NEXT: mls v0.8h, v2.8h, v1.8h |
| ; CHECK-NEXT: cmeq v0.8h, v0.8h, #0 |
| ; CHECK-NEXT: movi v1.8h, #1 |
| ; CHECK-NEXT: and v0.16b, v0.16b, v1.16b |
| ; CHECK-NEXT: ret |
| %urem = urem <8 x i16> %X, <i16 5, i16 5, i16 5, i16 5, |
| i16 5, i16 5, i16 5, i16 5> |
| %cmp = icmp eq <8 x i16> %urem, <i16 0, i16 0, i16 0, i16 0, |
| i16 0, i16 0, i16 0, i16 0> |
| %ret = zext <8 x i1> %cmp to <8 x i16> |
| ret <8 x i16> %ret |
| } |
| |
| ; Tests BuildUREMEqFold for 4 x i32 splat vectors with even divisor. |
| ; The expected behavior is that the fold is _not_ applied |
| ; because it requires a ROTR in the even case, which has to be expanded. |
| define <4 x i32> @test_urem_even_vec_i32(<4 x i32> %X) nounwind readnone { |
| ; CHECK-LABEL: test_urem_even_vec_i32: |
| ; CHECK: // %bb.0: |
| ; CHECK-NEXT: mov w8, #9363 |
| ; CHECK-NEXT: movk w8, #37449, lsl #16 |
| ; CHECK-NEXT: ushr v1.4s, v0.4s, #1 |
| ; CHECK-NEXT: dup v3.4s, w8 |
| ; CHECK-NEXT: umull2 v4.2d, v1.4s, v3.4s |
| ; CHECK-NEXT: umull v1.2d, v1.2s, v3.2s |
| ; CHECK-NEXT: uzp2 v1.4s, v1.4s, v4.4s |
| ; CHECK-NEXT: movi v2.4s, #14 |
| ; CHECK-NEXT: ushr v1.4s, v1.4s, #2 |
| ; CHECK-NEXT: mls v0.4s, v1.4s, v2.4s |
| ; CHECK-NEXT: cmeq v0.4s, v0.4s, #0 |
| ; CHECK-NEXT: movi v1.4s, #1 |
| ; CHECK-NEXT: and v0.16b, v0.16b, v1.16b |
| ; CHECK-NEXT: ret |
| %urem = urem <4 x i32> %X, <i32 14, i32 14, i32 14, i32 14> |
| %cmp = icmp eq <4 x i32> %urem, <i32 0, i32 0, i32 0, i32 0> |
| %ret = zext <4 x i1> %cmp to <4 x i32> |
| ret <4 x i32> %ret |
| } |
| |
| ; Like test_urem_even_vec_i32, but with 8 x i16 vectors. |
| ; i16 is not legal for ROTR on AArch64, but ROTR also cannot be promoted to i32, |
| ; so this would crash if BuildUREMEqFold was applied. |
| define <8 x i16> @test_urem_even_vec_i16(<8 x i16> %X) nounwind readnone { |
| ; CHECK-LABEL: test_urem_even_vec_i16: |
| ; CHECK: // %bb.0: |
| ; CHECK-NEXT: mov w8, #18725 |
| ; CHECK-NEXT: ushr v1.8h, v0.8h, #1 |
| ; CHECK-NEXT: dup v3.8h, w8 |
| ; CHECK-NEXT: umull2 v4.4s, v1.8h, v3.8h |
| ; CHECK-NEXT: umull v1.4s, v1.4h, v3.4h |
| ; CHECK-NEXT: uzp2 v1.8h, v1.8h, v4.8h |
| ; CHECK-NEXT: movi v2.8h, #14 |
| ; CHECK-NEXT: ushr v1.8h, v1.8h, #1 |
| ; CHECK-NEXT: mls v0.8h, v1.8h, v2.8h |
| ; CHECK-NEXT: cmeq v0.8h, v0.8h, #0 |
| ; CHECK-NEXT: movi v1.8h, #1 |
| ; CHECK-NEXT: and v0.16b, v0.16b, v1.16b |
| ; CHECK-NEXT: ret |
| %urem = urem <8 x i16> %X, <i16 14, i16 14, i16 14, i16 14, |
| i16 14, i16 14, i16 14, i16 14> |
| %cmp = icmp eq <8 x i16> %urem, <i16 0, i16 0, i16 0, i16 0, |
| i16 0, i16 0, i16 0, i16 0> |
| %ret = zext <8 x i1> %cmp to <8 x i16> |
| ret <8 x i16> %ret |
| } |
| |
| ; We should not proceed with this fold if the divisor is 1 or -1 |
| define <4 x i32> @test_urem_one_vec(<4 x i32> %X) nounwind readnone { |
| ; CHECK-LABEL: test_urem_one_vec: |
| ; CHECK: // %bb.0: |
| ; CHECK-NEXT: movi v0.4s, #1 |
| ; CHECK-NEXT: ret |
| %urem = urem <4 x i32> %X, <i32 1, i32 1, i32 1, i32 1> |
| %cmp = icmp eq <4 x i32> %urem, <i32 0, i32 0, i32 0, i32 0> |
| %ret = zext <4 x i1> %cmp to <4 x i32> |
| ret <4 x i32> %ret |
| } |
| |
| ; BuildUREMEqFold does not work when the only odd factor of the divisor is 1. |
| ; This ensures we don't touch powers of two. |
| define <4 x i32> @test_urem_pow2_vec(<4 x i32> %X) nounwind readnone { |
| ; CHECK-LABEL: test_urem_pow2_vec: |
| ; CHECK: // %bb.0: |
| ; CHECK-NEXT: movi v1.4s, #15 |
| ; CHECK-NEXT: and v0.16b, v0.16b, v1.16b |
| ; CHECK-NEXT: cmeq v0.4s, v0.4s, #0 |
| ; CHECK-NEXT: movi v1.4s, #1 |
| ; CHECK-NEXT: and v0.16b, v0.16b, v1.16b |
| ; CHECK-NEXT: ret |
| %urem = urem <4 x i32> %X, <i32 16, i32 16, i32 16, i32 16> |
| %cmp = icmp eq <4 x i32> %urem, <i32 0, i32 0, i32 0, i32 0> |
| %ret = zext <4 x i1> %cmp to <4 x i32> |
| ret <4 x i32> %ret |
| } |