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llvm-project/llvm/test/CodeGen/X86/pr33349.ll

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[SelectionDAG] When scalarizing vselect, don't assert on a legal cond operand. When scalarizing the result of a vselect, the legalizer currently expects to already have scalarized the operands. While this is true for the true/false operands (which have the same type as the result), it is not case for the condition operand. On X86 AVX512, v1i1 is legal - this leads to operations such as '< N x type> vselect < N x i1> < N x type> < N x type>' where < N x type > is illegal to hit an assertion during the scalarization. The handling is similar to r205625. This also exposes the fact that (v1i1 extract_subvector) should be legal and selectable on AVX512 - We do this by custom lowering to vector_extract_elt. This still leaves us in some cases with redundant dag nodes which will be combined in a separate soon to come patch. This fixes pr33349. Differential revision: https://reviews.llvm.org/D36511 llvm-svn: 310552
2017-08-10 15:44:23 +08:00
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mattr=+avx512f | FileCheck %s --check-prefix=KNL
; RUN: llc < %s -mattr=+avx512f,+avx512vl,+avx512bw,+avx512dq | FileCheck %s --check-prefix=SKX
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
define void @test(<4 x i1> %m, <4 x x86_fp80> %v, <4 x x86_fp80>*%p) local_unnamed_addr {
; KNL-LABEL: test:
; KNL: # BB#0: # %bb
; KNL-NEXT: vpextrb $0, %xmm0, %eax
; KNL-NEXT: testb $1, %al
; KNL-NEXT: fld1
; KNL-NEXT: fldz
; KNL-NEXT: fld %st(0)
; KNL-NEXT: fcmovne %st(2), %st(0)
; KNL-NEXT: vpextrb $4, %xmm0, %eax
; KNL-NEXT: testb $1, %al
; KNL-NEXT: fld %st(1)
; KNL-NEXT: fcmovne %st(3), %st(0)
; KNL-NEXT: vpextrb $8, %xmm0, %eax
; KNL-NEXT: testb $1, %al
; KNL-NEXT: fld %st(2)
; KNL-NEXT: fcmovne %st(4), %st(0)
; KNL-NEXT: vpextrb $12, %xmm0, %eax
; KNL-NEXT: testb $1, %al
; KNL-NEXT: fxch %st(3)
; KNL-NEXT: fcmovne %st(4), %st(0)
; KNL-NEXT: fstp %st(4)
; KNL-NEXT: fxch %st(3)
; KNL-NEXT: fstpt 30(%rdi)
; KNL-NEXT: fxch %st(1)
; KNL-NEXT: fstpt 20(%rdi)
; KNL-NEXT: fxch %st(1)
; KNL-NEXT: fstpt 10(%rdi)
; KNL-NEXT: fstpt (%rdi)
; KNL-NEXT: retq
;
; SKX-LABEL: test:
; SKX: # BB#0: # %bb
; SKX-NEXT: vpslld $31, %xmm0, %xmm0
; SKX-NEXT: vptestmd %xmm0, %xmm0, %k0
; SKX-NEXT: kshiftrw $2, %k0, %k1
; SKX-NEXT: kshiftlw $15, %k1, %k2
; SKX-NEXT: kshiftrw $15, %k2, %k2
; SKX-NEXT: kmovd %k2, %eax
; SKX-NEXT: testb $1, %al
; SKX-NEXT: fld1
; SKX-NEXT: fldz
; SKX-NEXT: fld %st(0)
; SKX-NEXT: fcmovne %st(2), %st(0)
; SKX-NEXT: kshiftlw $14, %k1, %k1
; SKX-NEXT: kshiftrw $15, %k1, %k1
; SKX-NEXT: kmovd %k1, %eax
; SKX-NEXT: testb $1, %al
; SKX-NEXT: fld %st(1)
; SKX-NEXT: fcmovne %st(3), %st(0)
; SKX-NEXT: kshiftlw $15, %k0, %k1
; SKX-NEXT: kshiftrw $15, %k1, %k1
; SKX-NEXT: kmovd %k1, %eax
; SKX-NEXT: testb $1, %al
; SKX-NEXT: fld %st(2)
; SKX-NEXT: fcmovne %st(4), %st(0)
; SKX-NEXT: kshiftlw $14, %k0, %k0
; SKX-NEXT: kshiftrw $15, %k0, %k0
; SKX-NEXT: kmovd %k0, %eax
; SKX-NEXT: testb $1, %al
; SKX-NEXT: fxch %st(3)
; SKX-NEXT: fcmovne %st(4), %st(0)
; SKX-NEXT: fstp %st(4)
; SKX-NEXT: fxch %st(3)
; SKX-NEXT: fstpt 10(%rdi)
; SKX-NEXT: fxch %st(1)
; SKX-NEXT: fstpt (%rdi)
; SKX-NEXT: fxch %st(1)
; SKX-NEXT: fstpt 30(%rdi)
; SKX-NEXT: fstpt 20(%rdi)
; SKX-NEXT: retq
bb:
%tmp = select <4 x i1> %m, <4 x x86_fp80> <x86_fp80 0xK3FFF8000000000000000, x86_fp80 0xK3FFF8000000000000000, x86_fp80 0xK3FFF8000000000000000, x86_fp80 0xK3FFF8000000000000000>, <4 x x86_fp80> zeroinitializer
store <4 x x86_fp80> %tmp, <4 x x86_fp80>* %p, align 16
ret void
}