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clang-p2996/llvm/test/CodeGen/X86/vector-pack-128.ll
Simon Pilgrim 0b91de5ea3 [X86] Add X86FixupVectorConstantsPass to re-fold AVX512 vector load folds as broadcast folds 
This patch analyzes AVX512 instructions for full vector width folded loads from the constant pool and attempts to determine if it can be replaced with a smaller broadcast folded variant. Typically the broadcast opportunities were missed by type-width mismatches or mulituse limitations which have been removed in later passes.

As well as introducing broadcast fold tables (which can hopefully be extended/automated in the future), this also handles mismatches in the AND/ANDN/OR/XOR/TERNLOG type-widths, catching additional missed opportunities.

This is patch is pulled from the ongoing work based on D150143, but without removing the existing DAG constant broadcast lowering code - this patch is currently a late stage cleanup only.

The intention is to add additional broadcast/extension handling of constants in future patches, but it turned out that AVX512 broadcast handling was the easiest to start with.

Differential Revision: https://reviews.llvm.org/D150526
2023-05-23 10:58:17 +01:00

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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+sse2 | FileCheck %s --check-prefixes=SSE,SSE2
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+sse4.2 | FileCheck %s --check-prefixes=SSE,SSE4
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx | FileCheck %s --check-prefixes=AVX,AVX1
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx2 | FileCheck %s --check-prefixes=AVX,AVX2
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx512vl,+avx512f | FileCheck %s --check-prefixes=AVX,AVX512
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx512vl,+avx512bw | FileCheck %s --check-prefixes=AVX,AVX512
; trunc(concat(x,y)) -> pack
define <8 x i16> @trunc_concat_packssdw_128(<4 x i32> %a0, <4 x i32> %a1) nounwind {
; SSE-LABEL: trunc_concat_packssdw_128:
; SSE: # %bb.0:
; SSE-NEXT: psrad $17, %xmm0
; SSE-NEXT: pand {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm1
; SSE-NEXT: packssdw %xmm1, %xmm0
; SSE-NEXT: retq
;
; AVX1-LABEL: trunc_concat_packssdw_128:
; AVX1: # %bb.0:
; AVX1-NEXT: vpsrad $17, %xmm0, %xmm0
; AVX1-NEXT: vpand {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm1, %xmm1
; AVX1-NEXT: vpackssdw %xmm1, %xmm0, %xmm0
; AVX1-NEXT: retq
;
; AVX2-LABEL: trunc_concat_packssdw_128:
; AVX2: # %bb.0:
; AVX2-NEXT: vpsrad $17, %xmm0, %xmm0
; AVX2-NEXT: vpbroadcastd {{.*#+}} xmm2 = [15,15,15,15]
; AVX2-NEXT: vpand %xmm2, %xmm1, %xmm1
; AVX2-NEXT: vpackssdw %xmm1, %xmm0, %xmm0
; AVX2-NEXT: retq
;
; AVX512-LABEL: trunc_concat_packssdw_128:
; AVX512: # %bb.0:
; AVX512-NEXT: vpsrad $17, %xmm0, %xmm0
; AVX512-NEXT: vpandd {{\.?LCPI[0-9]+_[0-9]+}}(%rip){1to4}, %xmm1, %xmm1
; AVX512-NEXT: vpackssdw %xmm1, %xmm0, %xmm0
; AVX512-NEXT: retq
%1 = ashr <4 x i32> %a0, <i32 17, i32 17, i32 17, i32 17>
%2 = and <4 x i32> %a1, <i32 15, i32 15, i32 15, i32 15>
%3 = shufflevector <4 x i32> %1, <4 x i32> %2, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7>
%4 = trunc <8 x i32> %3 to <8 x i16>
ret <8 x i16> %4
}
define <8 x i16> @trunc_concat_packusdw_128(<4 x i32> %a0, <4 x i32> %a1) nounwind {
; SSE2-LABEL: trunc_concat_packusdw_128:
; SSE2: # %bb.0:
; SSE2-NEXT: psrld $17, %xmm0
; SSE2-NEXT: pand {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm1
; SSE2-NEXT: packssdw %xmm1, %xmm0
; SSE2-NEXT: retq
;
; SSE4-LABEL: trunc_concat_packusdw_128:
; SSE4: # %bb.0:
; SSE4-NEXT: psrld $17, %xmm0
; SSE4-NEXT: pand {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm1
; SSE4-NEXT: packusdw %xmm1, %xmm0
; SSE4-NEXT: retq
;
; AVX1-LABEL: trunc_concat_packusdw_128:
; AVX1: # %bb.0:
; AVX1-NEXT: vpsrld $17, %xmm0, %xmm0
; AVX1-NEXT: vpand {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm1, %xmm1
; AVX1-NEXT: vpackusdw %xmm1, %xmm0, %xmm0
; AVX1-NEXT: retq
;
; AVX2-LABEL: trunc_concat_packusdw_128:
; AVX2: # %bb.0:
; AVX2-NEXT: vpsrld $17, %xmm0, %xmm0
; AVX2-NEXT: vpbroadcastd {{.*#+}} xmm2 = [15,15,15,15]
; AVX2-NEXT: vpand %xmm2, %xmm1, %xmm1
; AVX2-NEXT: vpackusdw %xmm1, %xmm0, %xmm0
; AVX2-NEXT: retq
;
; AVX512-LABEL: trunc_concat_packusdw_128:
; AVX512: # %bb.0:
; AVX512-NEXT: vpsrld $17, %xmm0, %xmm0
; AVX512-NEXT: vpandd {{\.?LCPI[0-9]+_[0-9]+}}(%rip){1to4}, %xmm1, %xmm1
; AVX512-NEXT: vpackusdw %xmm1, %xmm0, %xmm0
; AVX512-NEXT: retq
%1 = lshr <4 x i32> %a0, <i32 17, i32 17, i32 17, i32 17>
%2 = and <4 x i32> %a1, <i32 15, i32 15, i32 15, i32 15>
%3 = shufflevector <4 x i32> %1, <4 x i32> %2, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7>
%4 = trunc <8 x i32> %3 to <8 x i16>
ret <8 x i16> %4
}
define <16 x i8> @trunc_concat_packsswb_128(<8 x i16> %a0, <8 x i16> %a1) nounwind {
; SSE-LABEL: trunc_concat_packsswb_128:
; SSE: # %bb.0:
; SSE-NEXT: psraw $15, %xmm0
; SSE-NEXT: pand {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm1
; SSE-NEXT: packsswb %xmm1, %xmm0
; SSE-NEXT: retq
;
; AVX1-LABEL: trunc_concat_packsswb_128:
; AVX1: # %bb.0:
; AVX1-NEXT: vpsraw $15, %xmm0, %xmm0
; AVX1-NEXT: vpand {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm1, %xmm1
; AVX1-NEXT: vpacksswb %xmm1, %xmm0, %xmm0
; AVX1-NEXT: retq
;
; AVX2-LABEL: trunc_concat_packsswb_128:
; AVX2: # %bb.0:
; AVX2-NEXT: vpsraw $15, %xmm0, %xmm0
; AVX2-NEXT: vpand {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm1, %xmm1
; AVX2-NEXT: vpacksswb %xmm1, %xmm0, %xmm0
; AVX2-NEXT: retq
;
; AVX512-LABEL: trunc_concat_packsswb_128:
; AVX512: # %bb.0:
; AVX512-NEXT: vpsraw $15, %xmm0, %xmm0
; AVX512-NEXT: vpandd {{\.?LCPI[0-9]+_[0-9]+}}(%rip){1to4}, %xmm1, %xmm1
; AVX512-NEXT: vpacksswb %xmm1, %xmm0, %xmm0
; AVX512-NEXT: retq
%1 = ashr <8 x i16> %a0, <i16 15, i16 15, i16 15, i16 15, i16 15, i16 15, i16 15, i16 15>
%2 = and <8 x i16> %a1, <i16 1, i16 1, i16 1, i16 1, i16 1, i16 1, i16 1, i16 1>
%3 = shufflevector <8 x i16> %1, <8 x i16> %2, <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
%4 = trunc <16 x i16> %3 to <16 x i8>
ret <16 x i8> %4
}
define <16 x i8> @trunc_concat_packuswb_128(<8 x i16> %a0, <8 x i16> %a1) nounwind {
; SSE-LABEL: trunc_concat_packuswb_128:
; SSE: # %bb.0:
; SSE-NEXT: psrlw $15, %xmm0
; SSE-NEXT: pand {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm1
; SSE-NEXT: packuswb %xmm1, %xmm0
; SSE-NEXT: retq
;
; AVX1-LABEL: trunc_concat_packuswb_128:
; AVX1: # %bb.0:
; AVX1-NEXT: vpsrlw $15, %xmm0, %xmm0
; AVX1-NEXT: vpand {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm1, %xmm1
; AVX1-NEXT: vpackuswb %xmm1, %xmm0, %xmm0
; AVX1-NEXT: retq
;
; AVX2-LABEL: trunc_concat_packuswb_128:
; AVX2: # %bb.0:
; AVX2-NEXT: vpsrlw $15, %xmm0, %xmm0
; AVX2-NEXT: vpand {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm1, %xmm1
; AVX2-NEXT: vpackuswb %xmm1, %xmm0, %xmm0
; AVX2-NEXT: retq
;
; AVX512-LABEL: trunc_concat_packuswb_128:
; AVX512: # %bb.0:
; AVX512-NEXT: vpsrlw $15, %xmm0, %xmm0
; AVX512-NEXT: vpandd {{\.?LCPI[0-9]+_[0-9]+}}(%rip){1to4}, %xmm1, %xmm1
; AVX512-NEXT: vpackuswb %xmm1, %xmm0, %xmm0
; AVX512-NEXT: retq
%1 = lshr <8 x i16> %a0, <i16 15, i16 15, i16 15, i16 15, i16 15, i16 15, i16 15, i16 15>
%2 = and <8 x i16> %a1, <i16 1, i16 1, i16 1, i16 1, i16 1, i16 1, i16 1, i16 1>
%3 = shufflevector <8 x i16> %1, <8 x i16> %2, <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
%4 = trunc <16 x i16> %3 to <16 x i8>
ret <16 x i8> %4
}
; concat(trunc(x),trunc(y)) -> pack
define <8 x i16> @concat_trunc_packssdw_128(<4 x i32> %a0, <4 x i32> %a1) nounwind {
; SSE2-LABEL: concat_trunc_packssdw_128:
; SSE2: # %bb.0:
; SSE2-NEXT: psrad $17, %xmm0
; SSE2-NEXT: pand {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm1
; SSE2-NEXT: packssdw %xmm0, %xmm0
; SSE2-NEXT: packuswb %xmm1, %xmm1
; SSE2-NEXT: punpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
; SSE2-NEXT: retq
;
; SSE4-LABEL: concat_trunc_packssdw_128:
; SSE4: # %bb.0:
; SSE4-NEXT: psrad $17, %xmm0
; SSE4-NEXT: pand {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm1
; SSE4-NEXT: packssdw %xmm1, %xmm0
; SSE4-NEXT: retq
;
; AVX1-LABEL: concat_trunc_packssdw_128:
; AVX1: # %bb.0:
; AVX1-NEXT: vpsrad $17, %xmm0, %xmm0
; AVX1-NEXT: vpand {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm1, %xmm1
; AVX1-NEXT: vpackssdw %xmm1, %xmm0, %xmm0
; AVX1-NEXT: retq
;
; AVX2-LABEL: concat_trunc_packssdw_128:
; AVX2: # %bb.0:
; AVX2-NEXT: vpsrad $17, %xmm0, %xmm0
; AVX2-NEXT: vpbroadcastd {{.*#+}} xmm2 = [15,15,15,15]
; AVX2-NEXT: vpand %xmm2, %xmm1, %xmm1
; AVX2-NEXT: vpackssdw %xmm1, %xmm0, %xmm0
; AVX2-NEXT: retq
;
; AVX512-LABEL: concat_trunc_packssdw_128:
; AVX512: # %bb.0:
; AVX512-NEXT: vpsrad $17, %xmm0, %xmm0
; AVX512-NEXT: vpandd {{\.?LCPI[0-9]+_[0-9]+}}(%rip){1to4}, %xmm1, %xmm1
; AVX512-NEXT: vpackssdw %xmm1, %xmm0, %xmm0
; AVX512-NEXT: retq
%1 = ashr <4 x i32> %a0, <i32 17, i32 17, i32 17, i32 17>
%2 = and <4 x i32> %a1, <i32 15, i32 15, i32 15, i32 15>
%3 = trunc <4 x i32> %1 to <4 x i16>
%4 = trunc <4 x i32> %2 to <4 x i16>
%5 = shufflevector <4 x i16> %3, <4 x i16> %4, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7>
ret <8 x i16> %5
}
define <8 x i16> @concat_trunc_packusdw_128(<4 x i32> %a0, <4 x i32> %a1) nounwind {
; SSE2-LABEL: concat_trunc_packusdw_128:
; SSE2: # %bb.0:
; SSE2-NEXT: psrld $17, %xmm0
; SSE2-NEXT: pand {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm1
; SSE2-NEXT: packssdw %xmm0, %xmm0
; SSE2-NEXT: packuswb %xmm1, %xmm1
; SSE2-NEXT: punpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
; SSE2-NEXT: retq
;
; SSE4-LABEL: concat_trunc_packusdw_128:
; SSE4: # %bb.0:
; SSE4-NEXT: psrld $17, %xmm0
; SSE4-NEXT: pand {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm1
; SSE4-NEXT: packusdw %xmm1, %xmm0
; SSE4-NEXT: retq
;
; AVX1-LABEL: concat_trunc_packusdw_128:
; AVX1: # %bb.0:
; AVX1-NEXT: vpsrld $17, %xmm0, %xmm0
; AVX1-NEXT: vpand {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm1, %xmm1
; AVX1-NEXT: vpackusdw %xmm1, %xmm0, %xmm0
; AVX1-NEXT: retq
;
; AVX2-LABEL: concat_trunc_packusdw_128:
; AVX2: # %bb.0:
; AVX2-NEXT: vpsrld $17, %xmm0, %xmm0
; AVX2-NEXT: vpbroadcastd {{.*#+}} xmm2 = [15,15,15,15]
; AVX2-NEXT: vpand %xmm2, %xmm1, %xmm1
; AVX2-NEXT: vpackusdw %xmm1, %xmm0, %xmm0
; AVX2-NEXT: retq
;
; AVX512-LABEL: concat_trunc_packusdw_128:
; AVX512: # %bb.0:
; AVX512-NEXT: vpsrld $17, %xmm0, %xmm0
; AVX512-NEXT: vpandd {{\.?LCPI[0-9]+_[0-9]+}}(%rip){1to4}, %xmm1, %xmm1
; AVX512-NEXT: vpackusdw %xmm1, %xmm0, %xmm0
; AVX512-NEXT: retq
%1 = lshr <4 x i32> %a0, <i32 17, i32 17, i32 17, i32 17>
%2 = and <4 x i32> %a1, <i32 15, i32 15, i32 15, i32 15>
%3 = trunc <4 x i32> %1 to <4 x i16>
%4 = trunc <4 x i32> %2 to <4 x i16>
%5 = shufflevector <4 x i16> %3, <4 x i16> %4, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7>
ret <8 x i16> %5
}
define <16 x i8> @concat_trunc_packsswb_128(<8 x i16> %a0, <8 x i16> %a1) nounwind {
; SSE-LABEL: concat_trunc_packsswb_128:
; SSE: # %bb.0:
; SSE-NEXT: psraw $15, %xmm0
; SSE-NEXT: pand {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm1
; SSE-NEXT: packsswb %xmm1, %xmm0
; SSE-NEXT: retq
;
; AVX1-LABEL: concat_trunc_packsswb_128:
; AVX1: # %bb.0:
; AVX1-NEXT: vpsraw $15, %xmm0, %xmm0
; AVX1-NEXT: vpand {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm1, %xmm1
; AVX1-NEXT: vpacksswb %xmm1, %xmm0, %xmm0
; AVX1-NEXT: retq
;
; AVX2-LABEL: concat_trunc_packsswb_128:
; AVX2: # %bb.0:
; AVX2-NEXT: vpsraw $15, %xmm0, %xmm0
; AVX2-NEXT: vpand {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm1, %xmm1
; AVX2-NEXT: vpacksswb %xmm1, %xmm0, %xmm0
; AVX2-NEXT: retq
;
; AVX512-LABEL: concat_trunc_packsswb_128:
; AVX512: # %bb.0:
; AVX512-NEXT: vpsraw $15, %xmm0, %xmm0
; AVX512-NEXT: vpandd {{\.?LCPI[0-9]+_[0-9]+}}(%rip){1to4}, %xmm1, %xmm1
; AVX512-NEXT: vpacksswb %xmm1, %xmm0, %xmm0
; AVX512-NEXT: retq
%1 = ashr <8 x i16> %a0, <i16 15, i16 15, i16 15, i16 15, i16 15, i16 15, i16 15, i16 15>
%2 = and <8 x i16> %a1, <i16 1, i16 1, i16 1, i16 1, i16 1, i16 1, i16 1, i16 1>
%3 = trunc <8 x i16> %1 to <8 x i8>
%4 = trunc <8 x i16> %2 to <8 x i8>
%5 = shufflevector <8 x i8> %3, <8 x i8> %4, <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
ret <16 x i8> %5
}
define <16 x i8> @concat_trunc_packuswb_128(<8 x i16> %a0, <8 x i16> %a1) nounwind {
; SSE-LABEL: concat_trunc_packuswb_128:
; SSE: # %bb.0:
; SSE-NEXT: psrlw $15, %xmm0
; SSE-NEXT: pand {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm1
; SSE-NEXT: packuswb %xmm1, %xmm0
; SSE-NEXT: retq
;
; AVX1-LABEL: concat_trunc_packuswb_128:
; AVX1: # %bb.0:
; AVX1-NEXT: vpsrlw $15, %xmm0, %xmm0
; AVX1-NEXT: vpand {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm1, %xmm1
; AVX1-NEXT: vpackuswb %xmm1, %xmm0, %xmm0
; AVX1-NEXT: retq
;
; AVX2-LABEL: concat_trunc_packuswb_128:
; AVX2: # %bb.0:
; AVX2-NEXT: vpsrlw $15, %xmm0, %xmm0
; AVX2-NEXT: vpand {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm1, %xmm1
; AVX2-NEXT: vpackuswb %xmm1, %xmm0, %xmm0
; AVX2-NEXT: retq
;
; AVX512-LABEL: concat_trunc_packuswb_128:
; AVX512: # %bb.0:
; AVX512-NEXT: vpsrlw $15, %xmm0, %xmm0
; AVX512-NEXT: vpandd {{\.?LCPI[0-9]+_[0-9]+}}(%rip){1to4}, %xmm1, %xmm1
; AVX512-NEXT: vpackuswb %xmm1, %xmm0, %xmm0
; AVX512-NEXT: retq
%1 = lshr <8 x i16> %a0, <i16 15, i16 15, i16 15, i16 15, i16 15, i16 15, i16 15, i16 15>
%2 = and <8 x i16> %a1, <i16 1, i16 1, i16 1, i16 1, i16 1, i16 1, i16 1, i16 1>
%3 = trunc <8 x i16> %1 to <8 x i8>
%4 = trunc <8 x i16> %2 to <8 x i8>
%5 = shufflevector <8 x i8> %3, <8 x i8> %4, <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
ret <16 x i8> %5
}
;; NOTE: These prefixes are unused and the list is autogenerated. Do not add tests below this line:
; AVX: {{.*}}
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