forked from OSchip/llvm-project
283 lines
12 KiB
LLVM
283 lines
12 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=i686-unknown -mattr=+avx512bw | FileCheck %s --check-prefixes=CHECK,X86
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; RUN: llc < %s -mtriple=x86_64-unknown -mattr=+avx512bw | FileCheck %s --check-prefixes=CHECK,X64
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; Check that under certain conditions we can factor out a rotate
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; from the following idioms:
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; (a*c0) >> s1 | (a*c1)
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; (a/c0) << s1 | (a/c1)
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; This targets cases where instcombine has folded a shl/srl/mul/udiv
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; with one of the shifts from the rotate idiom
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define <4 x i32> @vroll_v4i32_extract_shl(<4 x i32> %i) {
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; CHECK-LABEL: vroll_v4i32_extract_shl:
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; CHECK: # %bb.0:
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; CHECK-NEXT: vpslld $3, %xmm0, %xmm0
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; CHECK-NEXT: vprold $7, %zmm0, %zmm0
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; CHECK-NEXT: # kill: def $xmm0 killed $xmm0 killed $zmm0
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; CHECK-NEXT: vzeroupper
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; CHECK-NEXT: ret{{[l|q]}}
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%lhs_mul = shl <4 x i32> %i, <i32 3, i32 3, i32 3, i32 3>
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%rhs_mul = shl <4 x i32> %i, <i32 10, i32 10, i32 10, i32 10>
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%lhs_shift = lshr <4 x i32> %lhs_mul, <i32 25, i32 25, i32 25, i32 25>
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%out = or <4 x i32> %lhs_shift, %rhs_mul
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ret <4 x i32> %out
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}
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define <4 x i64> @vrolq_v4i64_extract_shrl(<4 x i64> %i) nounwind {
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; CHECK-LABEL: vrolq_v4i64_extract_shrl:
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; CHECK: # %bb.0:
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; CHECK-NEXT: vpsrlq $5, %ymm0, %ymm0
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; CHECK-NEXT: vprolq $29, %zmm0, %zmm0
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; CHECK-NEXT: # kill: def $ymm0 killed $ymm0 killed $zmm0
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; CHECK-NEXT: ret{{[l|q]}}
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%lhs_div = lshr <4 x i64> %i, <i64 40, i64 40, i64 40, i64 40>
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%rhs_div = lshr <4 x i64> %i, <i64 5, i64 5, i64 5, i64 5>
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%rhs_shift = shl <4 x i64> %rhs_div, <i64 29, i64 29, i64 29, i64 29>
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%out = or <4 x i64> %lhs_div, %rhs_shift
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ret <4 x i64> %out
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}
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define <8 x i32> @vroll_extract_mul(<8 x i32> %i) nounwind {
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; CHECK-LABEL: vroll_extract_mul:
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; CHECK: # %bb.0:
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; CHECK-NEXT: vpbroadcastd {{.*#+}} ymm1 = [10,10,10,10,10,10,10,10]
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; CHECK-NEXT: vpmulld %ymm1, %ymm0, %ymm0
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; CHECK-NEXT: vprold $6, %zmm0, %zmm0
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; CHECK-NEXT: # kill: def $ymm0 killed $ymm0 killed $zmm0
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; CHECK-NEXT: ret{{[l|q]}}
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%lhs_mul = mul <8 x i32> %i, <i32 640, i32 640, i32 640, i32 640, i32 640, i32 640, i32 640, i32 640>
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%rhs_mul = mul <8 x i32> %i, <i32 10, i32 10, i32 10, i32 10, i32 10, i32 10, i32 10, i32 10>
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%rhs_shift = lshr <8 x i32> %rhs_mul, <i32 26, i32 26, i32 26, i32 26, i32 26, i32 26, i32 26, i32 26>
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%out = or <8 x i32> %lhs_mul, %rhs_shift
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ret <8 x i32> %out
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}
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define <2 x i64> @vrolq_extract_udiv(<2 x i64> %i) nounwind {
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; X86-LABEL: vrolq_extract_udiv:
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; X86: # %bb.0:
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; X86-NEXT: subl $44, %esp
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; X86-NEXT: vmovups %xmm0, {{[-0-9]+}}(%e{{[sb]}}p) # 16-byte Spill
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; X86-NEXT: vextractps $1, %xmm0, {{[0-9]+}}(%esp)
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; X86-NEXT: vmovss %xmm0, (%esp)
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; X86-NEXT: movl $0, {{[0-9]+}}(%esp)
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; X86-NEXT: movl $3, {{[0-9]+}}(%esp)
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; X86-NEXT: calll __udivdi3
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; X86-NEXT: vmovups {{[-0-9]+}}(%e{{[sb]}}p), %xmm0 # 16-byte Reload
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; X86-NEXT: vextractps $3, %xmm0, {{[0-9]+}}(%esp)
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; X86-NEXT: vextractps $2, %xmm0, (%esp)
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; X86-NEXT: movl $0, {{[0-9]+}}(%esp)
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; X86-NEXT: movl $3, {{[0-9]+}}(%esp)
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; X86-NEXT: vmovd %eax, %xmm0
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; X86-NEXT: vpinsrd $1, %edx, %xmm0, %xmm0
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; X86-NEXT: vmovdqu %xmm0, {{[-0-9]+}}(%e{{[sb]}}p) # 16-byte Spill
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; X86-NEXT: calll __udivdi3
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; X86-NEXT: vmovdqu {{[-0-9]+}}(%e{{[sb]}}p), %xmm0 # 16-byte Reload
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; X86-NEXT: vpinsrd $2, %eax, %xmm0, %xmm0
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; X86-NEXT: vpinsrd $3, %edx, %xmm0, %xmm0
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; X86-NEXT: vprolq $57, %zmm0, %zmm0
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; X86-NEXT: # kill: def $xmm0 killed $xmm0 killed $zmm0
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; X86-NEXT: addl $44, %esp
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; X86-NEXT: vzeroupper
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; X86-NEXT: retl
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;
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; X64-LABEL: vrolq_extract_udiv:
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; X64: # %bb.0:
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; X64-NEXT: vpextrq $1, %xmm0, %rax
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; X64-NEXT: movabsq $-6148914691236517205, %rcx # imm = 0xAAAAAAAAAAAAAAAB
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; X64-NEXT: mulq %rcx
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; X64-NEXT: vmovq %rdx, %xmm1
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; X64-NEXT: vmovq %xmm0, %rax
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; X64-NEXT: mulq %rcx
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; X64-NEXT: vmovq %rdx, %xmm0
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; X64-NEXT: vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
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; X64-NEXT: vpsrlq $1, %xmm0, %xmm0
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; X64-NEXT: vprolq $57, %zmm0, %zmm0
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; X64-NEXT: # kill: def $xmm0 killed $xmm0 killed $zmm0
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; X64-NEXT: vzeroupper
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; X64-NEXT: retq
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%lhs_div = udiv <2 x i64> %i, <i64 3, i64 3>
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%rhs_div = udiv <2 x i64> %i, <i64 384, i64 384>
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%lhs_shift = shl <2 x i64> %lhs_div, <i64 57, i64 57>
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%out = or <2 x i64> %lhs_shift, %rhs_div
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ret <2 x i64> %out
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}
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define <4 x i32> @vrolw_extract_mul_with_mask(<4 x i32> %i) nounwind {
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; X86-LABEL: vrolw_extract_mul_with_mask:
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; X86: # %bb.0:
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; X86-NEXT: vpbroadcastd {{.*#+}} xmm1 = [9,9,9,9]
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; X86-NEXT: vpmulld %xmm1, %xmm0, %xmm0
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; X86-NEXT: vprold $7, %zmm0, %zmm0
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; X86-NEXT: vpand {{\.LCPI.*}}, %xmm0, %xmm0
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; X86-NEXT: vzeroupper
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; X86-NEXT: retl
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;
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; X64-LABEL: vrolw_extract_mul_with_mask:
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; X64: # %bb.0:
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; X64-NEXT: vpbroadcastd {{.*#+}} xmm1 = [9,9,9,9]
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; X64-NEXT: vpmulld %xmm1, %xmm0, %xmm0
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; X64-NEXT: vprold $7, %zmm0, %zmm0
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; X64-NEXT: vpand {{.*}}(%rip), %xmm0, %xmm0
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; X64-NEXT: vzeroupper
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; X64-NEXT: retq
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%lhs_mul = mul <4 x i32> %i, <i32 1152, i32 1152, i32 1152, i32 1152>
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%rhs_mul = mul <4 x i32> %i, <i32 9, i32 9, i32 9, i32 9>
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%lhs_and = and <4 x i32> %lhs_mul, <i32 160, i32 160, i32 160, i32 160>
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%rhs_shift = lshr <4 x i32> %rhs_mul, <i32 25, i32 25, i32 25, i32 25>
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%out = or <4 x i32> %lhs_and, %rhs_shift
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ret <4 x i32> %out
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}
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define <32 x i16> @illegal_no_extract_mul(<32 x i16> %i) nounwind {
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; X86-LABEL: illegal_no_extract_mul:
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; X86: # %bb.0:
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; X86-NEXT: vpmullw {{\.LCPI.*}}, %zmm0, %zmm1
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; X86-NEXT: vpmullw {{\.LCPI.*}}, %zmm0, %zmm0
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; X86-NEXT: vpsrlw $10, %zmm0, %zmm0
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; X86-NEXT: vporq %zmm0, %zmm1, %zmm0
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; X86-NEXT: retl
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;
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; X64-LABEL: illegal_no_extract_mul:
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; X64: # %bb.0:
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; X64-NEXT: vpmullw {{.*}}(%rip), %zmm0, %zmm1
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; X64-NEXT: vpmullw {{.*}}(%rip), %zmm0, %zmm0
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; X64-NEXT: vpsrlw $10, %zmm0, %zmm0
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; X64-NEXT: vporq %zmm0, %zmm1, %zmm0
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; X64-NEXT: retq
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%lhs_mul = mul <32 x i16> %i, <i16 640, i16 640, i16 640, i16 640, i16 640, i16 640, i16 640, i16 640, i16 640, i16 640, i16 640, i16 640, i16 640, i16 640, i16 640, i16 640, i16 640, i16 640, i16 640, i16 640, i16 640, i16 640, i16 640, i16 640, i16 640, i16 640, i16 640, i16 640, i16 640, i16 640, i16 640, i16 640>
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%rhs_mul = mul <32 x i16> %i, <i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10>
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%rhs_shift = lshr <32 x i16> %rhs_mul, <i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10, i16 10>
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%out = or <32 x i16> %lhs_mul, %rhs_shift
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ret <32 x i16> %out
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}
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; Result would undershift
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define <4 x i64> @no_extract_shl(<4 x i64> %i) nounwind {
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; CHECK-LABEL: no_extract_shl:
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; CHECK: # %bb.0:
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; CHECK-NEXT: vpsllq $11, %ymm0, %ymm1
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; CHECK-NEXT: vpsllq $24, %ymm0, %ymm0
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; CHECK-NEXT: vpsrlq $50, %ymm1, %ymm1
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; CHECK-NEXT: vpor %ymm0, %ymm1, %ymm0
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; CHECK-NEXT: ret{{[l|q]}}
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%lhs_mul = shl <4 x i64> %i, <i64 11, i64 11, i64 11, i64 11>
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%rhs_mul = shl <4 x i64> %i, <i64 24, i64 24, i64 24, i64 24>
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%lhs_shift = lshr <4 x i64> %lhs_mul, <i64 50, i64 50, i64 50, i64 50>
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%out = or <4 x i64> %lhs_shift, %rhs_mul
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ret <4 x i64> %out
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}
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; Result would overshift
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define <4 x i32> @no_extract_shrl(<4 x i32> %i) nounwind {
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; CHECK-LABEL: no_extract_shrl:
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; CHECK: # %bb.0:
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; CHECK-NEXT: vpbroadcastd {{.*#+}} xmm1 = [4026531840,4026531840,4026531840,4026531840]
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; CHECK-NEXT: vpslld $25, %xmm0, %xmm2
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; CHECK-NEXT: vpand %xmm1, %xmm2, %xmm1
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; CHECK-NEXT: vpsrld $9, %xmm0, %xmm0
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; CHECK-NEXT: vpor %xmm0, %xmm1, %xmm0
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; CHECK-NEXT: ret{{[l|q]}}
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%lhs_div = lshr <4 x i32> %i, <i32 3, i32 3, i32 3, i32 3>
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%rhs_div = lshr <4 x i32> %i, <i32 9, i32 9, i32 9, i32 9>
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%lhs_shift = shl <4 x i32> %lhs_div, <i32 28, i32 28, i32 28, i32 28>
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%out = or <4 x i32> %lhs_shift, %rhs_div
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ret <4 x i32> %out
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}
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; Can factor 512 from 1536, but result is 3 instead of 9
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define <8 x i32> @no_extract_mul(<8 x i32> %i) nounwind {
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; CHECK-LABEL: no_extract_mul:
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; CHECK: # %bb.0:
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; CHECK-NEXT: vpbroadcastd {{.*#+}} ymm1 = [1536,1536,1536,1536,1536,1536,1536,1536]
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; CHECK-NEXT: vpmulld %ymm1, %ymm0, %ymm1
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; CHECK-NEXT: vpbroadcastd {{.*#+}} ymm2 = [9,9,9,9,9,9,9,9]
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; CHECK-NEXT: vpmulld %ymm2, %ymm0, %ymm0
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; CHECK-NEXT: vpsrld $23, %ymm0, %ymm0
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; CHECK-NEXT: vpor %ymm0, %ymm1, %ymm0
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; CHECK-NEXT: ret{{[l|q]}}
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%lhs_mul = mul <8 x i32> %i, <i32 1536, i32 1536, i32 1536, i32 1536, i32 1536, i32 1536, i32 1536, i32 1536>
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%rhs_mul = mul <8 x i32> %i, <i32 9, i32 9, i32 9, i32 9, i32 9, i32 9, i32 9, i32 9>
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%rhs_shift = lshr <8 x i32> %rhs_mul, <i32 23, i32 23, i32 23, i32 23, i32 23, i32 23, i32 23, i32 23>
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%out = or <8 x i32> %lhs_mul, %rhs_shift
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ret <8 x i32> %out
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}
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; Can't evenly factor 256 from 770
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define <2 x i64> @no_extract_udiv(<2 x i64> %i) nounwind {
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; X86-LABEL: no_extract_udiv:
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; X86: # %bb.0:
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; X86-NEXT: subl $60, %esp
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; X86-NEXT: vmovups %xmm0, {{[-0-9]+}}(%e{{[sb]}}p) # 16-byte Spill
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; X86-NEXT: vextractps $1, %xmm0, {{[0-9]+}}(%esp)
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; X86-NEXT: vmovss %xmm0, (%esp)
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; X86-NEXT: movl $0, {{[0-9]+}}(%esp)
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; X86-NEXT: movl $3, {{[0-9]+}}(%esp)
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; X86-NEXT: calll __udivdi3
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; X86-NEXT: vmovups {{[-0-9]+}}(%e{{[sb]}}p), %xmm0 # 16-byte Reload
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; X86-NEXT: vextractps $3, %xmm0, {{[0-9]+}}(%esp)
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; X86-NEXT: vextractps $2, %xmm0, (%esp)
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; X86-NEXT: movl $0, {{[0-9]+}}(%esp)
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; X86-NEXT: movl $3, {{[0-9]+}}(%esp)
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; X86-NEXT: vmovd %eax, %xmm0
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; X86-NEXT: vmovdqu %xmm0, {{[-0-9]+}}(%e{{[sb]}}p) # 16-byte Spill
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; X86-NEXT: calll __udivdi3
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; X86-NEXT: vmovdqu {{[-0-9]+}}(%e{{[sb]}}p), %xmm0 # 16-byte Reload
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; X86-NEXT: vpinsrd $2, %eax, %xmm0, %xmm0
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; X86-NEXT: vmovdqu %xmm0, {{[-0-9]+}}(%e{{[sb]}}p) # 16-byte Spill
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; X86-NEXT: vmovups {{[-0-9]+}}(%e{{[sb]}}p), %xmm0 # 16-byte Reload
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; X86-NEXT: vextractps $1, %xmm0, {{[0-9]+}}(%esp)
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; X86-NEXT: vmovss %xmm0, (%esp)
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; X86-NEXT: movl $0, {{[0-9]+}}(%esp)
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; X86-NEXT: movl $770, {{[0-9]+}}(%esp) # imm = 0x302
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; X86-NEXT: calll __udivdi3
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; X86-NEXT: vmovups {{[-0-9]+}}(%e{{[sb]}}p), %xmm0 # 16-byte Reload
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; X86-NEXT: vextractps $3, %xmm0, {{[0-9]+}}(%esp)
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; X86-NEXT: vextractps $2, %xmm0, (%esp)
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; X86-NEXT: movl $0, {{[0-9]+}}(%esp)
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; X86-NEXT: movl $770, {{[0-9]+}}(%esp) # imm = 0x302
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; X86-NEXT: vmovd %eax, %xmm0
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; X86-NEXT: vpinsrd $1, %edx, %xmm0, %xmm0
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; X86-NEXT: vmovdqu %xmm0, {{[-0-9]+}}(%e{{[sb]}}p) # 16-byte Spill
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; X86-NEXT: calll __udivdi3
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; X86-NEXT: vmovdqu {{[-0-9]+}}(%e{{[sb]}}p), %xmm0 # 16-byte Reload
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; X86-NEXT: vpinsrd $2, %eax, %xmm0, %xmm0
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; X86-NEXT: vpinsrd $3, %edx, %xmm0, %xmm0
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; X86-NEXT: vmovdqu {{[-0-9]+}}(%e{{[sb]}}p), %xmm1 # 16-byte Reload
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; X86-NEXT: vpsllq $56, %xmm1, %xmm1
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; X86-NEXT: vpor %xmm0, %xmm1, %xmm0
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; X86-NEXT: addl $60, %esp
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; X86-NEXT: retl
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;
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; X64-LABEL: no_extract_udiv:
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; X64: # %bb.0:
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; X64-NEXT: vpextrq $1, %xmm0, %rcx
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; X64-NEXT: movabsq $-6148914691236517205, %rdi # imm = 0xAAAAAAAAAAAAAAAB
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; X64-NEXT: movq %rcx, %rax
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; X64-NEXT: mulq %rdi
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; X64-NEXT: vmovq %rdx, %xmm1
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; X64-NEXT: vmovq %xmm0, %rsi
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; X64-NEXT: movq %rsi, %rax
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; X64-NEXT: mulq %rdi
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; X64-NEXT: vmovq %rdx, %xmm0
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; X64-NEXT: vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
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; X64-NEXT: vpsrlq $1, %xmm0, %xmm0
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; X64-NEXT: movabsq $-6180857105216966645, %rdi # imm = 0xAA392F35DC17F00B
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; X64-NEXT: movq %rcx, %rax
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; X64-NEXT: mulq %rdi
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; X64-NEXT: vmovq %rdx, %xmm1
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; X64-NEXT: movq %rsi, %rax
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; X64-NEXT: mulq %rdi
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; X64-NEXT: vmovq %rdx, %xmm2
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; X64-NEXT: vpunpcklqdq {{.*#+}} xmm1 = xmm2[0],xmm1[0]
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; X64-NEXT: vpsrlq $9, %xmm1, %xmm1
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; X64-NEXT: vpsllq $56, %xmm0, %xmm0
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; X64-NEXT: vpor %xmm1, %xmm0, %xmm0
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; X64-NEXT: retq
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%lhs_div = udiv <2 x i64> %i, <i64 3, i64 3>
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%rhs_div = udiv <2 x i64> %i, <i64 770, i64 770>
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%lhs_shift = shl <2 x i64> %lhs_div, <i64 56, i64 56>
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%out = or <2 x i64> %lhs_shift, %rhs_div
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ret <2 x i64> %out
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}
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