15 Commits

Author SHA1 Message Date
Phoebe Wang
02fe96b240 [X86][FP16] Do not split FP64->FP16 to FP64->FP32->FP16
Truncation from double to half is not always identical to truncating to float first and then to half. https://godbolt.org/z/56s9517hd

On the other hand, expanding to float and then to double is always identical to expanding to double directly. https://godbolt.org/z/Ye8vbYPnY

Reviewed By: RKSimon, skan

Differential Revision: https://reviews.llvm.org/D130151
2022-07-22 08:36:05 +08:00
Phoebe Wang
f621e568f3 [X86] Remove cfi directives and duplicated check in tests. NFC 2022-07-21 22:55:25 +08:00
Phoebe Wang
655ba9c8a1 Reland "Reland "Reland "Reland "[X86][RFC] Enable _Float16 type support on X86 following the psABI""""
This resolves problems reported in commit 1a20252978c76cf2518aa45b175a9e5d6d36c4f0.
1. Promote to float lowering for nodes XINT_TO_FP
2. Bail out f16 from shuffle combine due to vector type is not legal in the version
2022-06-17 21:34:05 +08:00
Benjamin Kramer
1a20252978 Revert "Reland "Reland "Reland "[X86][RFC] Enable _Float16 type support on X86 following the psABI""""
This reverts commit 04a3d5f3a1193fb87576425a385aa0a6115b1e7c.

I see two more issues:

- uitofp/sitofp from i32/i64 to half now generates
  __floatsihf/__floatdihf, which exists in neither compiler-rt nor
  libgcc

- This crashes when legalizing the bitcast:
```
; RUN: llc < %s -mcpu=skx
define void @main.45(ptr nocapture readnone %retval, ptr noalias nocapture readnone %run_options, ptr noalias nocapture readnone %params, ptr noalias nocapture readonly %buffer_table, ptr noalias nocapture readnone %status, ptr noalias nocapture readnone %prof_counters) local_unnamed_addr {
entry:
  %fusion = load ptr, ptr %buffer_table, align 8
  %0 = getelementptr inbounds ptr, ptr %buffer_table, i64 1
  %Arg_1.2 = load ptr, ptr %0, align 8
  %1 = getelementptr inbounds ptr, ptr %buffer_table, i64 2
  %Arg_0.1 = load ptr, ptr %1, align 8
  %2 = load half, ptr %Arg_0.1, align 8
  %3 = bitcast half %2 to i16
  %4 = and i16 %3, 32767
  %5 = icmp eq i16 %4, 0
  %6 = and i16 %3, -32768
  %broadcast.splatinsert = insertelement <4 x half> poison, half %2, i64 0
  %broadcast.splat = shufflevector <4 x half> %broadcast.splatinsert, <4 x half> poison, <4 x i32> zeroinitializer
  %broadcast.splatinsert9 = insertelement <4 x i16> poison, i16 %4, i64 0
  %broadcast.splat10 = shufflevector <4 x i16> %broadcast.splatinsert9, <4 x i16> poison, <4 x i32> zeroinitializer
  %broadcast.splatinsert11 = insertelement <4 x i16> poison, i16 %6, i64 0
  %broadcast.splat12 = shufflevector <4 x i16> %broadcast.splatinsert11, <4 x i16> poison, <4 x i32> zeroinitializer
  %broadcast.splatinsert13 = insertelement <4 x i16> poison, i16 %3, i64 0
  %broadcast.splat14 = shufflevector <4 x i16> %broadcast.splatinsert13, <4 x i16> poison, <4 x i32> zeroinitializer
  %wide.load = load <4 x half>, ptr %Arg_1.2, align 8
  %7 = fcmp uno <4 x half> %broadcast.splat, %wide.load
  %8 = fcmp oeq <4 x half> %broadcast.splat, %wide.load
  %9 = bitcast <4 x half> %wide.load to <4 x i16>
  %10 = and <4 x i16> %9, <i16 32767, i16 32767, i16 32767, i16 32767>
  %11 = icmp eq <4 x i16> %10, zeroinitializer
  %12 = and <4 x i16> %9, <i16 -32768, i16 -32768, i16 -32768, i16 -32768>
  %13 = or <4 x i16> %12, <i16 1, i16 1, i16 1, i16 1>
  %14 = select <4 x i1> %11, <4 x i16> %9, <4 x i16> %13
  %15 = icmp ugt <4 x i16> %broadcast.splat10, %10
  %16 = icmp ne <4 x i16> %broadcast.splat12, %12
  %17 = or <4 x i1> %15, %16
  %18 = select <4 x i1> %17, <4 x i16> <i16 -1, i16 -1, i16 -1, i16 -1>, <4 x i16> <i16 1, i16 1, i16 1, i16 1>
  %19 = add <4 x i16> %18, %broadcast.splat14
  %20 = select i1 %5, <4 x i16> %14, <4 x i16> %19
  %21 = select <4 x i1> %8, <4 x i16> %9, <4 x i16> %20
  %22 = bitcast <4 x i16> %21 to <4 x half>
  %23 = select <4 x i1> %7, <4 x half> <half 0xH7E00, half 0xH7E00, half 0xH7E00, half 0xH7E00>, <4 x half> %22
  store <4 x half> %23, ptr %fusion, align 16
  ret void
}
```

llc: llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp:977: void (anonymous namespace)::SelectionDAGLegalize::LegalizeOp(llvm::SDNode *): Assertion `(TLI.getTypeAction(*DAG.getContext(), Op.getValueType()) == TargetLowering::TypeLegal || Op.getOpcode() == ISD::TargetConstant || Op.getOpcode() == ISD::Register) && "Unexpected illegal type!"' failed.
2022-06-17 09:43:07 +02:00
Phoebe Wang
04a3d5f3a1 Reland "Reland "Reland "[X86][RFC] Enable _Float16 type support on X86 following the psABI"""
Fix the crash on lowering X86ISD::FCMP.
2022-06-17 12:12:17 +08:00
Frederik Gossen
3cd5696a33 Revert "Reland "Reland "[X86][RFC] Enable _Float16 type support on X86 following the psABI"""
This reverts commit e1c5afa47d37012499467b5061fc42e50884d129.

This introduces crashes in the JAX backend on CPU. A reproducer in LLVM is
below. Let me know if you have trouble reproducing this.

; ModuleID = '__compute_module'
source_filename = "__compute_module"
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-grtev4-linux-gnu"

@0 = private unnamed_addr constant [4 x i8] c"\00\00\00?"
@1 = private unnamed_addr constant [4 x i8] c"\1C}\908"
@2 = private unnamed_addr constant [4 x i8] c"?\00\\4"
@3 = private unnamed_addr constant [4 x i8] c"%ci1"
@4 = private unnamed_addr constant [4 x i8] zeroinitializer
@5 = private unnamed_addr constant [4 x i8] c"\00\00\00\C0"
@6 = private unnamed_addr constant [4 x i8] c"\00\00\00B"
@7 = private unnamed_addr constant [4 x i8] c"\94\B4\C22"
@8 = private unnamed_addr constant [4 x i8] c"^\09B6"
@9 = private unnamed_addr constant [4 x i8] c"\15\F3M?"
@10 = private unnamed_addr constant [4 x i8] c"e\CC\\;"
@11 = private unnamed_addr constant [4 x i8] c"d\BD/>"
@12 = private unnamed_addr constant [4 x i8] c"V\F4I="
@13 = private unnamed_addr constant [4 x i8] c"\10\CB,<"
@14 = private unnamed_addr constant [4 x i8] c"\AC\E3\D6:"
@15 = private unnamed_addr constant [4 x i8] c"\DC\A8E9"
@16 = private unnamed_addr constant [4 x i8] c"\C6\FA\897"
@17 = private unnamed_addr constant [4 x i8] c"%\F9\955"
@18 = private unnamed_addr constant [4 x i8] c"\B5\DB\813"
@19 = private unnamed_addr constant [4 x i8] c"\B4W_\B2"
@20 = private unnamed_addr constant [4 x i8] c"\1Cc\8F\B4"
@21 = private unnamed_addr constant [4 x i8] c"~3\94\B6"
@22 = private unnamed_addr constant [4 x i8] c"3Yq\B8"
@23 = private unnamed_addr constant [4 x i8] c"\E9\17\17\BA"
@24 = private unnamed_addr constant [4 x i8] c"\F1\B2\8D\BB"
@25 = private unnamed_addr constant [4 x i8] c"\F8t\C2\BC"
@26 = private unnamed_addr constant [4 x i8] c"\82[\C2\BD"
@27 = private unnamed_addr constant [4 x i8] c"uB-?"
@28 = private unnamed_addr constant [4 x i8] c"^\FF\9B\BE"
@29 = private unnamed_addr constant [4 x i8] c"\00\00\00A"

; Function Attrs: uwtable
define void @main.158(ptr %retval, ptr noalias %run_options, ptr noalias %params, ptr noalias %buffer_table, ptr noalias %status, ptr noalias %prof_counters) #0 {
entry:
  %fusion.invar_address.dim.1 = alloca i64, align 8
  %fusion.invar_address.dim.0 = alloca i64, align 8
  %0 = getelementptr inbounds ptr, ptr %buffer_table, i64 1
  %Arg_0.1 = load ptr, ptr %0, align 8, !invariant.load !0, !dereferenceable !1, !align !2
  %1 = getelementptr inbounds ptr, ptr %buffer_table, i64 0
  %fusion = load ptr, ptr %1, align 8, !invariant.load !0, !dereferenceable !1, !align !2
  store i64 0, ptr %fusion.invar_address.dim.0, align 8
  br label %fusion.loop_header.dim.0

return:                                           ; preds = %fusion.loop_exit.dim.0
  ret void

fusion.loop_header.dim.0:                         ; preds = %fusion.loop_exit.dim.1, %entry
  %fusion.indvar.dim.0 = load i64, ptr %fusion.invar_address.dim.0, align 8
  %2 = icmp uge i64 %fusion.indvar.dim.0, 3
  br i1 %2, label %fusion.loop_exit.dim.0, label %fusion.loop_body.dim.0

fusion.loop_body.dim.0:                           ; preds = %fusion.loop_header.dim.0
  store i64 0, ptr %fusion.invar_address.dim.1, align 8
  br label %fusion.loop_header.dim.1

fusion.loop_header.dim.1:                         ; preds = %fusion.loop_body.dim.1, %fusion.loop_body.dim.0
  %fusion.indvar.dim.1 = load i64, ptr %fusion.invar_address.dim.1, align 8
  %3 = icmp uge i64 %fusion.indvar.dim.1, 1
  br i1 %3, label %fusion.loop_exit.dim.1, label %fusion.loop_body.dim.1

fusion.loop_body.dim.1:                           ; preds = %fusion.loop_header.dim.1
  %4 = getelementptr inbounds [3 x [1 x half]], ptr %Arg_0.1, i64 0, i64 %fusion.indvar.dim.0, i64 0
  %5 = load half, ptr %4, align 2, !invariant.load !0, !noalias !3
  %6 = fpext half %5 to float
  %7 = call float @llvm.fabs.f32(float %6)
  %constant.121 = load float, ptr @29, align 4
  %compare.2 = fcmp ole float %7, %constant.121
  %8 = zext i1 %compare.2 to i8
  %constant.120 = load float, ptr @0, align 4
  %multiply.95 = fmul float %7, %constant.120
  %constant.119 = load float, ptr @5, align 4
  %add.82 = fadd float %multiply.95, %constant.119
  %constant.118 = load float, ptr @4, align 4
  %multiply.94 = fmul float %add.82, %constant.118
  %constant.117 = load float, ptr @19, align 4
  %add.81 = fadd float %multiply.94, %constant.117
  %multiply.92 = fmul float %add.82, %add.81
  %constant.116 = load float, ptr @18, align 4
  %add.79 = fadd float %multiply.92, %constant.116
  %multiply.91 = fmul float %add.82, %add.79
  %subtract.87 = fsub float %multiply.91, %add.81
  %constant.115 = load float, ptr @20, align 4
  %add.78 = fadd float %subtract.87, %constant.115
  %multiply.89 = fmul float %add.82, %add.78
  %subtract.86 = fsub float %multiply.89, %add.79
  %constant.114 = load float, ptr @17, align 4
  %add.76 = fadd float %subtract.86, %constant.114
  %multiply.88 = fmul float %add.82, %add.76
  %subtract.84 = fsub float %multiply.88, %add.78
  %constant.113 = load float, ptr @21, align 4
  %add.75 = fadd float %subtract.84, %constant.113
  %multiply.86 = fmul float %add.82, %add.75
  %subtract.83 = fsub float %multiply.86, %add.76
  %constant.112 = load float, ptr @16, align 4
  %add.73 = fadd float %subtract.83, %constant.112
  %multiply.85 = fmul float %add.82, %add.73
  %subtract.81 = fsub float %multiply.85, %add.75
  %constant.111 = load float, ptr @22, align 4
  %add.72 = fadd float %subtract.81, %constant.111
  %multiply.83 = fmul float %add.82, %add.72
  %subtract.80 = fsub float %multiply.83, %add.73
  %constant.110 = load float, ptr @15, align 4
  %add.70 = fadd float %subtract.80, %constant.110
  %multiply.82 = fmul float %add.82, %add.70
  %subtract.78 = fsub float %multiply.82, %add.72
  %constant.109 = load float, ptr @23, align 4
  %add.69 = fadd float %subtract.78, %constant.109
  %multiply.80 = fmul float %add.82, %add.69
  %subtract.77 = fsub float %multiply.80, %add.70
  %constant.108 = load float, ptr @14, align 4
  %add.68 = fadd float %subtract.77, %constant.108
  %multiply.79 = fmul float %add.82, %add.68
  %subtract.75 = fsub float %multiply.79, %add.69
  %constant.107 = load float, ptr @24, align 4
  %add.67 = fadd float %subtract.75, %constant.107
  %multiply.77 = fmul float %add.82, %add.67
  %subtract.74 = fsub float %multiply.77, %add.68
  %constant.106 = load float, ptr @13, align 4
  %add.66 = fadd float %subtract.74, %constant.106
  %multiply.76 = fmul float %add.82, %add.66
  %subtract.72 = fsub float %multiply.76, %add.67
  %constant.105 = load float, ptr @25, align 4
  %add.65 = fadd float %subtract.72, %constant.105
  %multiply.74 = fmul float %add.82, %add.65
  %subtract.71 = fsub float %multiply.74, %add.66
  %constant.104 = load float, ptr @12, align 4
  %add.64 = fadd float %subtract.71, %constant.104
  %multiply.73 = fmul float %add.82, %add.64
  %subtract.69 = fsub float %multiply.73, %add.65
  %constant.103 = load float, ptr @26, align 4
  %add.63 = fadd float %subtract.69, %constant.103
  %multiply.71 = fmul float %add.82, %add.63
  %subtract.67 = fsub float %multiply.71, %add.64
  %constant.102 = load float, ptr @11, align 4
  %add.62 = fadd float %subtract.67, %constant.102
  %multiply.70 = fmul float %add.82, %add.62
  %subtract.66 = fsub float %multiply.70, %add.63
  %constant.101 = load float, ptr @28, align 4
  %add.61 = fadd float %subtract.66, %constant.101
  %multiply.68 = fmul float %add.82, %add.61
  %subtract.65 = fsub float %multiply.68, %add.62
  %constant.100 = load float, ptr @27, align 4
  %add.60 = fadd float %subtract.65, %constant.100
  %subtract.64 = fsub float %add.60, %add.62
  %multiply.66 = fmul float %subtract.64, %constant.120
  %constant.99 = load float, ptr @6, align 4
  %divide.4 = fdiv float %constant.99, %7
  %add.59 = fadd float %divide.4, %constant.119
  %multiply.65 = fmul float %add.59, %constant.118
  %constant.98 = load float, ptr @3, align 4
  %add.58 = fadd float %multiply.65, %constant.98
  %multiply.64 = fmul float %add.59, %add.58
  %constant.97 = load float, ptr @7, align 4
  %add.57 = fadd float %multiply.64, %constant.97
  %multiply.63 = fmul float %add.59, %add.57
  %subtract.63 = fsub float %multiply.63, %add.58
  %constant.96 = load float, ptr @2, align 4
  %add.56 = fadd float %subtract.63, %constant.96
  %multiply.62 = fmul float %add.59, %add.56
  %subtract.62 = fsub float %multiply.62, %add.57
  %constant.95 = load float, ptr @8, align 4
  %add.55 = fadd float %subtract.62, %constant.95
  %multiply.61 = fmul float %add.59, %add.55
  %subtract.61 = fsub float %multiply.61, %add.56
  %constant.94 = load float, ptr @1, align 4
  %add.54 = fadd float %subtract.61, %constant.94
  %multiply.60 = fmul float %add.59, %add.54
  %subtract.60 = fsub float %multiply.60, %add.55
  %constant.93 = load float, ptr @10, align 4
  %add.53 = fadd float %subtract.60, %constant.93
  %multiply.59 = fmul float %add.59, %add.53
  %subtract.59 = fsub float %multiply.59, %add.54
  %constant.92 = load float, ptr @9, align 4
  %add.52 = fadd float %subtract.59, %constant.92
  %subtract.58 = fsub float %add.52, %add.54
  %multiply.58 = fmul float %subtract.58, %constant.120
  %9 = call float @llvm.sqrt.f32(float %7)
  %10 = fdiv float 1.000000e+00, %9
  %multiply.57 = fmul float %multiply.58, %10
  %11 = trunc i8 %8 to i1
  %12 = select i1 %11, float %multiply.66, float %multiply.57
  %13 = fptrunc float %12 to half
  %14 = getelementptr inbounds [3 x [1 x half]], ptr %fusion, i64 0, i64 %fusion.indvar.dim.0, i64 0
  store half %13, ptr %14, align 2, !alias.scope !3
  %invar.inc1 = add nuw nsw i64 %fusion.indvar.dim.1, 1
  store i64 %invar.inc1, ptr %fusion.invar_address.dim.1, align 8
  br label %fusion.loop_header.dim.1

fusion.loop_exit.dim.1:                           ; preds = %fusion.loop_header.dim.1
  %invar.inc = add nuw nsw i64 %fusion.indvar.dim.0, 1
  store i64 %invar.inc, ptr %fusion.invar_address.dim.0, align 8
  br label %fusion.loop_header.dim.0

fusion.loop_exit.dim.0:                           ; preds = %fusion.loop_header.dim.0
  br label %return
}

; Function Attrs: nocallback nofree nosync nounwind readnone speculatable willreturn
declare float @llvm.fabs.f32(float %0) #1

; Function Attrs: nocallback nofree nosync nounwind readnone speculatable willreturn
declare float @llvm.sqrt.f32(float %0) #1

attributes #0 = { uwtable "denormal-fp-math"="preserve-sign" "no-frame-pointer-elim"="false" }
attributes #1 = { nocallback nofree nosync nounwind readnone speculatable willreturn }

!0 = !{}
!1 = !{i64 6}
!2 = !{i64 8}
!3 = !{!4}
!4 = !{!"buffer: {index:0, offset:0, size:6}", !5}
!5 = !{!"XLA global AA domain"}
2022-06-15 18:04:42 -04:00
Phoebe Wang
e1c5afa47d Reland "Reland "[X86][RFC] Enable _Float16 type support on X86 following the psABI""
Fixed the missing SQRT promotion. Adding several missing operations too.
2022-06-15 23:00:18 +08:00
Thomas Joerg
37455b1f71 Revert "Reland "[X86][RFC] Enable _Float16 type support on X86 following the psABI""
This reverts commit 6e02e27536b9de25a651cfc9c2966ce471169355.

This introduces a crash in the backend. Reproducer in MLIR's LLVM
dialect follows. Let me know if you have trouble reproducing this.

module {
  llvm.func @malloc(i64) -> !llvm.ptr<i8>
  llvm.func @_mlir_ciface_tf_report_error(!llvm.ptr<i8>, i32, !llvm.ptr<i8>)
  llvm.mlir.global internal constant @error_message_2208944672953921889("failed to allocate memory at loc(\22-\22:3:8)\00")
  llvm.func @_mlir_ciface_tf_alloc(!llvm.ptr<i8>, i64, i64, i32, i32, !llvm.ptr<i32>) -> !llvm.ptr<i8>
  llvm.func @Rsqrt_CPU_DT_HALF_DT_HALF(%arg0: !llvm.ptr<i8>, %arg1: i64, %arg2: !llvm.ptr<i8>) -> !llvm.struct<(i64, ptr<i8>)> attributes {llvm.emit_c_interface, tf_entry} {
    %0 = llvm.mlir.constant(8 : i32) : i32
    %1 = llvm.mlir.constant(8 : index) : i64
    %2 = llvm.mlir.constant(2 : index) : i64
    %3 = llvm.mlir.constant(dense<0.000000e+00> : vector<4xf16>) : vector<4xf16>
    %4 = llvm.mlir.constant(dense<[0, 1, 2, 3]> : vector<4xi32>) : vector<4xi32>
    %5 = llvm.mlir.constant(dense<1.000000e+00> : vector<4xf16>) : vector<4xf16>
    %6 = llvm.mlir.constant(false) : i1
    %7 = llvm.mlir.constant(1 : i32) : i32
    %8 = llvm.mlir.constant(0 : i32) : i32
    %9 = llvm.mlir.constant(4 : index) : i64
    %10 = llvm.mlir.constant(0 : index) : i64
    %11 = llvm.mlir.constant(1 : index) : i64
    %12 = llvm.mlir.constant(-1 : index) : i64
    %13 = llvm.mlir.null : !llvm.ptr<f16>
    %14 = llvm.getelementptr %13[%9] : (!llvm.ptr<f16>, i64) -> !llvm.ptr<f16>
    %15 = llvm.ptrtoint %14 : !llvm.ptr<f16> to i64
    %16 = llvm.alloca %15 x f16 {alignment = 32 : i64} : (i64) -> !llvm.ptr<f16>
    %17 = llvm.alloca %15 x f16 {alignment = 32 : i64} : (i64) -> !llvm.ptr<f16>
    %18 = llvm.mlir.null : !llvm.ptr<i64>
    %19 = llvm.getelementptr %18[%arg1] : (!llvm.ptr<i64>, i64) -> !llvm.ptr<i64>
    %20 = llvm.ptrtoint %19 : !llvm.ptr<i64> to i64
    %21 = llvm.alloca %20 x i64 : (i64) -> !llvm.ptr<i64>
    llvm.br ^bb1(%10 : i64)
  ^bb1(%22: i64):  // 2 preds: ^bb0, ^bb2
    %23 = llvm.icmp "slt" %22, %arg1 : i64
    llvm.cond_br %23, ^bb2, ^bb3
  ^bb2:  // pred: ^bb1
    %24 = llvm.bitcast %arg2 : !llvm.ptr<i8> to !llvm.ptr<struct<(ptr<f16>, ptr<f16>, i64)>>
    %25 = llvm.getelementptr %24[%10, 2] : (!llvm.ptr<struct<(ptr<f16>, ptr<f16>, i64)>>, i64) -> !llvm.ptr<i64>
    %26 = llvm.add %22, %11  : i64
    %27 = llvm.getelementptr %25[%26] : (!llvm.ptr<i64>, i64) -> !llvm.ptr<i64>
    %28 = llvm.load %27 : !llvm.ptr<i64>
    %29 = llvm.getelementptr %21[%22] : (!llvm.ptr<i64>, i64) -> !llvm.ptr<i64>
    llvm.store %28, %29 : !llvm.ptr<i64>
    llvm.br ^bb1(%26 : i64)
  ^bb3:  // pred: ^bb1
    llvm.br ^bb4(%10, %11 : i64, i64)
  ^bb4(%30: i64, %31: i64):  // 2 preds: ^bb3, ^bb5
    %32 = llvm.icmp "slt" %30, %arg1 : i64
    llvm.cond_br %32, ^bb5, ^bb6
  ^bb5:  // pred: ^bb4
    %33 = llvm.bitcast %arg2 : !llvm.ptr<i8> to !llvm.ptr<struct<(ptr<f16>, ptr<f16>, i64)>>
    %34 = llvm.getelementptr %33[%10, 2] : (!llvm.ptr<struct<(ptr<f16>, ptr<f16>, i64)>>, i64) -> !llvm.ptr<i64>
    %35 = llvm.add %30, %11  : i64
    %36 = llvm.getelementptr %34[%35] : (!llvm.ptr<i64>, i64) -> !llvm.ptr<i64>
    %37 = llvm.load %36 : !llvm.ptr<i64>
    %38 = llvm.mul %37, %31  : i64
    llvm.br ^bb4(%35, %38 : i64, i64)
  ^bb6:  // pred: ^bb4
    %39 = llvm.bitcast %arg2 : !llvm.ptr<i8> to !llvm.ptr<ptr<f16>>
    %40 = llvm.getelementptr %39[%11] : (!llvm.ptr<ptr<f16>>, i64) -> !llvm.ptr<ptr<f16>>
    %41 = llvm.load %40 : !llvm.ptr<ptr<f16>>
    %42 = llvm.getelementptr %13[%11] : (!llvm.ptr<f16>, i64) -> !llvm.ptr<f16>
    %43 = llvm.ptrtoint %42 : !llvm.ptr<f16> to i64
    %44 = llvm.alloca %7 x i32 : (i32) -> !llvm.ptr<i32>
    llvm.store %8, %44 : !llvm.ptr<i32>
    %45 = llvm.call @_mlir_ciface_tf_alloc(%arg0, %31, %43, %8, %7, %44) : (!llvm.ptr<i8>, i64, i64, i32, i32, !llvm.ptr<i32>) -> !llvm.ptr<i8>
    %46 = llvm.bitcast %45 : !llvm.ptr<i8> to !llvm.ptr<f16>
    %47 = llvm.icmp "eq" %31, %10 : i64
    %48 = llvm.or %6, %47  : i1
    %49 = llvm.mlir.null : !llvm.ptr<i8>
    %50 = llvm.icmp "ne" %45, %49 : !llvm.ptr<i8>
    %51 = llvm.or %50, %48  : i1
    llvm.cond_br %51, ^bb7, ^bb13
  ^bb7:  // pred: ^bb6
    %52 = llvm.urem %31, %9  : i64
    %53 = llvm.sub %31, %52  : i64
    llvm.br ^bb8(%10 : i64)
  ^bb8(%54: i64):  // 2 preds: ^bb7, ^bb9
    %55 = llvm.icmp "slt" %54, %53 : i64
    llvm.cond_br %55, ^bb9, ^bb10
  ^bb9:  // pred: ^bb8
    %56 = llvm.mul %54, %11  : i64
    %57 = llvm.add %56, %10  : i64
    %58 = llvm.add %57, %10  : i64
    %59 = llvm.getelementptr %41[%58] : (!llvm.ptr<f16>, i64) -> !llvm.ptr<f16>
    %60 = llvm.bitcast %59 : !llvm.ptr<f16> to !llvm.ptr<vector<4xf16>>
    %61 = llvm.load %60 {alignment = 2 : i64} : !llvm.ptr<vector<4xf16>>
    %62 = "llvm.intr.sqrt"(%61) : (vector<4xf16>) -> vector<4xf16>
    %63 = llvm.fdiv %5, %62  : vector<4xf16>
    %64 = llvm.getelementptr %46[%58] : (!llvm.ptr<f16>, i64) -> !llvm.ptr<f16>
    %65 = llvm.bitcast %64 : !llvm.ptr<f16> to !llvm.ptr<vector<4xf16>>
    llvm.store %63, %65 {alignment = 2 : i64} : !llvm.ptr<vector<4xf16>>
    %66 = llvm.add %54, %9  : i64
    llvm.br ^bb8(%66 : i64)
  ^bb10:  // pred: ^bb8
    %67 = llvm.icmp "ult" %53, %31 : i64
    llvm.cond_br %67, ^bb11, ^bb12
  ^bb11:  // pred: ^bb10
    %68 = llvm.mul %53, %12  : i64
    %69 = llvm.add %31, %68  : i64
    %70 = llvm.mul %53, %11  : i64
    %71 = llvm.add %70, %10  : i64
    %72 = llvm.trunc %69 : i64 to i32
    %73 = llvm.mlir.undef : vector<4xi32>
    %74 = llvm.insertelement %72, %73[%8 : i32] : vector<4xi32>
    %75 = llvm.shufflevector %74, %73 [0 : i32, 0 : i32, 0 : i32, 0 : i32] : vector<4xi32>, vector<4xi32>
    %76 = llvm.icmp "slt" %4, %75 : vector<4xi32>
    %77 = llvm.add %71, %10  : i64
    %78 = llvm.getelementptr %41[%77] : (!llvm.ptr<f16>, i64) -> !llvm.ptr<f16>
    %79 = llvm.bitcast %78 : !llvm.ptr<f16> to !llvm.ptr<vector<4xf16>>
    %80 = llvm.intr.masked.load %79, %76, %3 {alignment = 2 : i32} : (!llvm.ptr<vector<4xf16>>, vector<4xi1>, vector<4xf16>) -> vector<4xf16>
    %81 = llvm.bitcast %16 : !llvm.ptr<f16> to !llvm.ptr<vector<4xf16>>
    llvm.store %80, %81 : !llvm.ptr<vector<4xf16>>
    %82 = llvm.load %81 {alignment = 2 : i64} : !llvm.ptr<vector<4xf16>>
    %83 = "llvm.intr.sqrt"(%82) : (vector<4xf16>) -> vector<4xf16>
    %84 = llvm.fdiv %5, %83  : vector<4xf16>
    %85 = llvm.bitcast %17 : !llvm.ptr<f16> to !llvm.ptr<vector<4xf16>>
    llvm.store %84, %85 {alignment = 2 : i64} : !llvm.ptr<vector<4xf16>>
    %86 = llvm.load %85 : !llvm.ptr<vector<4xf16>>
    %87 = llvm.getelementptr %46[%77] : (!llvm.ptr<f16>, i64) -> !llvm.ptr<f16>
    %88 = llvm.bitcast %87 : !llvm.ptr<f16> to !llvm.ptr<vector<4xf16>>
    llvm.intr.masked.store %86, %88, %76 {alignment = 2 : i32} : vector<4xf16>, vector<4xi1> into !llvm.ptr<vector<4xf16>>
    llvm.br ^bb12
  ^bb12:  // 2 preds: ^bb10, ^bb11
    %89 = llvm.mul %2, %1  : i64
    %90 = llvm.mul %arg1, %2  : i64
    %91 = llvm.add %90, %11  : i64
    %92 = llvm.mul %91, %1  : i64
    %93 = llvm.add %89, %92  : i64
    %94 = llvm.alloca %93 x i8 : (i64) -> !llvm.ptr<i8>
    %95 = llvm.bitcast %94 : !llvm.ptr<i8> to !llvm.ptr<ptr<f16>>
    llvm.store %46, %95 : !llvm.ptr<ptr<f16>>
    %96 = llvm.getelementptr %95[%11] : (!llvm.ptr<ptr<f16>>, i64) -> !llvm.ptr<ptr<f16>>
    llvm.store %46, %96 : !llvm.ptr<ptr<f16>>
    %97 = llvm.getelementptr %95[%2] : (!llvm.ptr<ptr<f16>>, i64) -> !llvm.ptr<ptr<f16>>
    %98 = llvm.bitcast %97 : !llvm.ptr<ptr<f16>> to !llvm.ptr<i64>
    llvm.store %10, %98 : !llvm.ptr<i64>
    %99 = llvm.bitcast %94 : !llvm.ptr<i8> to !llvm.ptr<struct<(ptr<f16>, ptr<f16>, i64, i64)>>
    %100 = llvm.getelementptr %99[%10, 3] : (!llvm.ptr<struct<(ptr<f16>, ptr<f16>, i64, i64)>>, i64) -> !llvm.ptr<i64>
    %101 = llvm.getelementptr %100[%arg1] : (!llvm.ptr<i64>, i64) -> !llvm.ptr<i64>
    %102 = llvm.sub %arg1, %11  : i64
    llvm.br ^bb14(%102, %11 : i64, i64)
  ^bb13:  // pred: ^bb6
    %103 = llvm.mlir.addressof @error_message_2208944672953921889 : !llvm.ptr<array<42 x i8>>
    %104 = llvm.getelementptr %103[%10, %10] : (!llvm.ptr<array<42 x i8>>, i64, i64) -> !llvm.ptr<i8>
    llvm.call @_mlir_ciface_tf_report_error(%arg0, %0, %104) : (!llvm.ptr<i8>, i32, !llvm.ptr<i8>) -> ()
    %105 = llvm.mul %2, %1  : i64
    %106 = llvm.mul %2, %10  : i64
    %107 = llvm.add %106, %11  : i64
    %108 = llvm.mul %107, %1  : i64
    %109 = llvm.add %105, %108  : i64
    %110 = llvm.alloca %109 x i8 : (i64) -> !llvm.ptr<i8>
    %111 = llvm.bitcast %110 : !llvm.ptr<i8> to !llvm.ptr<ptr<f16>>
    llvm.store %13, %111 : !llvm.ptr<ptr<f16>>
    %112 = llvm.getelementptr %111[%11] : (!llvm.ptr<ptr<f16>>, i64) -> !llvm.ptr<ptr<f16>>
    llvm.store %13, %112 : !llvm.ptr<ptr<f16>>
    %113 = llvm.getelementptr %111[%2] : (!llvm.ptr<ptr<f16>>, i64) -> !llvm.ptr<ptr<f16>>
    %114 = llvm.bitcast %113 : !llvm.ptr<ptr<f16>> to !llvm.ptr<i64>
    llvm.store %10, %114 : !llvm.ptr<i64>
    %115 = llvm.call @malloc(%109) : (i64) -> !llvm.ptr<i8>
    "llvm.intr.memcpy"(%115, %110, %109, %6) : (!llvm.ptr<i8>, !llvm.ptr<i8>, i64, i1) -> ()
    %116 = llvm.mlir.undef : !llvm.struct<(i64, ptr<i8>)>
    %117 = llvm.insertvalue %10, %116[0] : !llvm.struct<(i64, ptr<i8>)>
    %118 = llvm.insertvalue %115, %117[1] : !llvm.struct<(i64, ptr<i8>)>
    llvm.return %118 : !llvm.struct<(i64, ptr<i8>)>
  ^bb14(%119: i64, %120: i64):  // 2 preds: ^bb12, ^bb15
    %121 = llvm.icmp "sge" %119, %10 : i64
    llvm.cond_br %121, ^bb15, ^bb16
  ^bb15:  // pred: ^bb14
    %122 = llvm.getelementptr %21[%119] : (!llvm.ptr<i64>, i64) -> !llvm.ptr<i64>
    %123 = llvm.load %122 : !llvm.ptr<i64>
    %124 = llvm.getelementptr %100[%119] : (!llvm.ptr<i64>, i64) -> !llvm.ptr<i64>
    llvm.store %123, %124 : !llvm.ptr<i64>
    %125 = llvm.getelementptr %101[%119] : (!llvm.ptr<i64>, i64) -> !llvm.ptr<i64>
    llvm.store %120, %125 : !llvm.ptr<i64>
    %126 = llvm.mul %120, %123  : i64
    %127 = llvm.sub %119, %11  : i64
    llvm.br ^bb14(%127, %126 : i64, i64)
  ^bb16:  // pred: ^bb14
    %128 = llvm.call @malloc(%93) : (i64) -> !llvm.ptr<i8>
    "llvm.intr.memcpy"(%128, %94, %93, %6) : (!llvm.ptr<i8>, !llvm.ptr<i8>, i64, i1) -> ()
    %129 = llvm.mlir.undef : !llvm.struct<(i64, ptr<i8>)>
    %130 = llvm.insertvalue %arg1, %129[0] : !llvm.struct<(i64, ptr<i8>)>
    %131 = llvm.insertvalue %128, %130[1] : !llvm.struct<(i64, ptr<i8>)>
    llvm.return %131 : !llvm.struct<(i64, ptr<i8>)>
  }
  llvm.func @_mlir_ciface_Rsqrt_CPU_DT_HALF_DT_HALF(%arg0: !llvm.ptr<struct<(i64, ptr<i8>)>>, %arg1: !llvm.ptr<i8>, %arg2: !llvm.ptr<struct<(i64, ptr<i8>)>>) attributes {llvm.emit_c_interface, tf_entry} {
    %0 = llvm.load %arg2 : !llvm.ptr<struct<(i64, ptr<i8>)>>
    %1 = llvm.extractvalue %0[0] : !llvm.struct<(i64, ptr<i8>)>
    %2 = llvm.extractvalue %0[1] : !llvm.struct<(i64, ptr<i8>)>
    %3 = llvm.call @Rsqrt_CPU_DT_HALF_DT_HALF(%arg1, %1, %2) : (!llvm.ptr<i8>, i64, !llvm.ptr<i8>) -> !llvm.struct<(i64, ptr<i8>)>
    llvm.store %3, %arg0 : !llvm.ptr<struct<(i64, ptr<i8>)>>
    llvm.return
  }
}
2022-06-15 13:24:24 +02:00
Phoebe Wang
6e02e27536 Reland "[X86][RFC] Enable _Float16 type support on X86 following the psABI"
Disabled 2 mlir tests due to the runtime doesn't support `_Float16`, see
the issue here https://github.com/llvm/llvm-project/issues/55992
2022-06-15 09:15:31 +08:00
Mehdi Amini
5d8298a768 Revert "[X86][RFC] Enable _Float16 type support on X86 following the psABI"
This reverts commit 2d2da259c8726fd5c974c01122a9689981a12196.

This breaks MLIR integration test (JIT crashing), reverting in the
meantime.
2022-06-12 15:14:37 +00:00
Phoebe Wang
2d2da259c8 [X86][RFC] Enable _Float16 type support on X86 following the psABI
GCC and Clang/LLVM will support `_Float16` on X86 in C/C++, following
the latest X86 psABI. (https://gitlab.com/x86-psABIs)

_Float16 arithmetic will be performed using native half-precision. If
native arithmetic instructions are not available, it will be performed
at a higher precision (currently always float) and then truncated down
to _Float16 immediately after each single arithmetic operation.

Reviewed By: LuoYuanke

Differential Revision: https://reviews.llvm.org/D107082
2022-06-12 11:40:00 +08:00
Roman Lebedev
0aef747b84
[NFC][X86][Codegen] Megacommit: mass-regenerate all check lines that were already autogenerated
The motivation is that the update script has at least two deviations
(`<...>@GOT`/`<...>@PLT`/ and not hiding pointer arithmetics) from
what pretty much all the checklines were generated with,
and most of the tests are still not updated, so each time one of the
non-up-to-date tests is updated to see the effect of the code change,
there is a lot of noise. Instead of having to deal with that each
time, let's just deal with everything at once.

This has been done via:
```
cd llvm-project/llvm/test/CodeGen/X86
grep -rl "; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py" | xargs -L1 <...>/llvm-project/llvm/utils/update_llc_test_checks.py --llc-binary <...>/llvm-project/build/bin/llc
```

Not all tests were regenerated, however.
2021-06-11 23:57:02 +03:00
Craig Topper
f24c43c0c5 [X86] Autogenerate complete checks. NFC 2020-02-09 20:39:52 -08:00
Ahmed Bougacha
55c6682ae2 [X86] Don't force Nearest-Even rounding for VCVTPS2PH, use MXCSR.
Officially, we don't acknowledge non-default configurations of MXCSR,
as getting there would require usage of the FENV_ACCESS pragma (at
least insofar as rounding mode is concerned).

We don't support the pragma, so we can assume that the default
rounding mode - round to nearest, ties to even - is always used.

However, it's inconsistent with the rest of the instruction set,
where MXCSR is always effective (unless otherwise specified).
Also, it's an unnecessary obstacle to the few brave souls that use
fenv.h with LLVM.

Avoid the hard-coded rounding mode for fp_to_f16; use MXCSR instead.

llvm-svn: 259448
2016-02-02 01:32:50 +00:00
Andrea Di Biagio
af3f397b10 [X86] Teach how to custom lower double-to-half conversions under fast-math.
This patch teaches the backend how to expand a double-half conversion into
a double-float conversion immediately followed by a float-half conversion.
We do this only under fast-math, and if float-half conversions are legal
for the target.

Added test CodeGen/X86/fastmath-float-half-conversion.ll

Differential Revision: http://reviews.llvm.org/D7832

llvm-svn: 230276
2015-02-23 22:59:02 +00:00