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llvm-mirror/test/CodeGen/WebAssembly/simd-build-vector.ll
Thomas Lively 2b696bcac5 Reland "[WebAssembly] Emulate v128.const efficiently""
This reverts commit 432e4e56d3d2, which reverted 542523a61a21. Two issues from
the original commit have been fixed. First, MSVC does not like when std::array
is initialized with only single braces, so this commit switches to using the
more portable double braces. Second, there was a subtle endianness bug that
prevented the original commit from working correctly on big-endian machines,
which has been fixed by switching to using endianness-agnostic bit twiddling
instead of type punning.

Differential Revision: https://reviews.llvm.org/D88773
2020-10-13 04:36:59 +00:00

362 lines
15 KiB
LLVM

; RUN: llc < %s -asm-verbose=false -verify-machineinstrs -disable-wasm-fallthrough-return-opt -wasm-disable-explicit-locals -wasm-keep-registers -mattr=+unimplemented-simd128 | FileCheck %s --check-prefixes=CHECK,UNIMP
; RUN: llc < %s -asm-verbose=false -verify-machineinstrs -disable-wasm-fallthrough-return-opt -wasm-disable-explicit-locals -wasm-keep-registers -mattr=+simd128 | FileCheck %s --check-prefixes=CHECK,SIMD-VM
; Test that the logic to choose between v128.const vector
; initialization and splat vector initialization and to optimize the
; choice of splat value works correctly.
target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
target triple = "wasm32-unknown-unknown"
; CHECK-LABEL: emulated_const_trivial_splat:
; CHECK-NEXT: .functype emulated_const_trivial_splat () -> (v128)
; SIMD-VM-NEXT: i64.const $push0=, 8589934593
; SIMD-VM-NEXT: i64x2.splat $push1=, $pop0
; SIMD-VM-NEXT: return $pop1
; UNIMP: v128.const
define <4 x i32> @emulated_const_trivial_splat() {
ret <4 x i32> <i32 1, i32 2, i32 1, i32 2>
}
; CHECK-LABEL: emulated_const_first_sufficient:
; CHECK-NEXT: .functype emulated_const_first_sufficient () -> (v128)
; SIMD-VM-NEXT: i64.const $push0=, 8589934593
; SIMD-VM-NEXT: i64x2.splat $push1=, $pop0
; SIMD-VM-NEXT: return $pop1
; UNIMP: v128.const
define <4 x i32> @emulated_const_first_sufficient() {
ret <4 x i32> <i32 1, i32 2, i32 undef, i32 2>
}
; CHECK-LABEL: emulated_const_second_sufficient:
; CHECK-NEXT: .functype emulated_const_second_sufficient () -> (v128)
; SIMD-VM-NEXT: i64.const $push0=, 8589934593
; SIMD-VM-NEXT: i64x2.splat $push1=, $pop0
; SIMD-VM-NEXT: return $pop1
; UNIMP: v128.const
define <4 x i32> @emulated_const_second_sufficient() {
ret <4 x i32> <i32 1, i32 undef, i32 1, i32 2>
}
; CHECK-LABEL: emulated_const_combined_sufficient:
; CHECK-NEXT: .functype emulated_const_combined_sufficient () -> (v128)
; SIMD-VM-NEXT: i64.const $push0=, 8589934593
; SIMD-VM-NEXT: i64x2.splat $push1=, $pop0
; SIMD-VM-NEXT: return $pop1
; UNIMP: v128.const
define <4 x i32> @emulated_const_combined_sufficient() {
ret <4 x i32> <i32 1, i32 undef, i32 undef, i32 2>
}
; CHECK-LABEL: emulated_const_either_sufficient:
; CHECK-NEXT: .functype emulated_const_either_sufficient () -> (v128)
; SIMD-VM-NEXT: i64.const $push0=, 1
; SIMD-VM-NEXT: i64x2.splat $push1=, $pop0
; SIMD-VM-NEXT: return $pop1
; UNIMP: v128.const
define <4 x i32> @emulated_const_either_sufficient() {
ret <4 x i32> <i32 1, i32 undef, i32 1, i32 undef>
}
; CHECK-LABEL: emulated_const_neither_sufficient:
; CHECK-NEXT: .functype emulated_const_neither_sufficient () -> (v128)
; SIMD-VM-NEXT: i64.const $push0=, 8589934593
; SIMD-VM-NEXT: i64x2.splat $push1=, $pop0
; SIMD-VM-NEXT: i64.const $push2=, 17179869184
; SIMD-VM-NEXT: i64x2.replace_lane $push3=, $pop1, 1, $pop2
; SIMD-VM-NEXT: return $pop3
define <4 x i32> @emulated_const_neither_sufficient() {
ret <4 x i32> <i32 1, i32 2, i32 undef, i32 4>
}
; CHECK-LABEL: emulated_const_combined_sufficient_large:
; CHECK-NEXT: .functype emulated_const_combined_sufficient_large () -> (v128)
; SIMD-VM-NEXT: i64.const $push0=, 506097522914230528
; SIMD-VM-NEXT: i64x2.splat $push1=, $pop0
; SIMD-VM-NEXT: return $pop1
define <16 x i8> @emulated_const_combined_sufficient_large() {
ret <16 x i8> <i8 0, i8 undef, i8 2, i8 undef, i8 4, i8 undef, i8 6, i8 undef,
i8 undef, i8 1, i8 undef, i8 3, i8 undef, i8 5, i8 undef, i8 7>
}
; CHECK-LABEL: emulated_const_neither_sufficient_large:
; CHECK-NEXT: .functype emulated_const_neither_sufficient_large () -> (v128)
; SIMD-VM-NEXT: i64.const $push0=, -70368726997663744
; SIMD-VM-NEXT: i64x2.splat $push1=, $pop0
; SIMD-VM-NEXT: i64.const $push2=, 504408655873966336
; SIMD-VM-NEXT: i64x2.replace_lane $push3=, $pop1, 1, $pop2
; SIMD-VM-NEXT: return $pop3
define <16 x i8> @emulated_const_neither_sufficient_large() {
ret <16 x i8> <i8 0, i8 undef, i8 2, i8 undef, i8 4, i8 undef, i8 6, i8 255,
i8 undef, i8 1, i8 undef, i8 3, i8 undef, i8 5, i8 undef, i8 7>
}
; CHECK-LABEL: same_const_one_replaced_i16x8:
; CHECK-NEXT: .functype same_const_one_replaced_i16x8 (i32) -> (v128)
; UNIMP-NEXT: v128.const $push[[L0:[0-9]+]]=, 42, 42, 42, 42, 42, 0, 42, 42
; UNIMP-NEXT: i16x8.replace_lane $push[[L1:[0-9]+]]=, $pop[[L0]], 5, $0
; UNIMP-NEXT: return $pop[[L1]]
; SIMD-VM: i64x2.splat
define <8 x i16> @same_const_one_replaced_i16x8(i16 %x) {
%v = insertelement
<8 x i16> <i16 42, i16 42, i16 42, i16 42, i16 42, i16 42, i16 42, i16 42>,
i16 %x,
i32 5
ret <8 x i16> %v
}
; CHECK-LABEL: different_const_one_replaced_i16x8:
; CHECK-NEXT: .functype different_const_one_replaced_i16x8 (i32) -> (v128)
; UNIMP-NEXT: v128.const $push[[L0:[0-9]+]]=, 1, -2, 3, -4, 5, 0, 7, -8
; UNIMP-NEXT: i16x8.replace_lane $push[[L1:[0-9]+]]=, $pop[[L0]], 5, $0
; UNIMP-NEXT: return $pop[[L1]]
; SIMD-VM: i64x2.splat
define <8 x i16> @different_const_one_replaced_i16x8(i16 %x) {
%v = insertelement
<8 x i16> <i16 1, i16 -2, i16 3, i16 -4, i16 5, i16 -6, i16 7, i16 -8>,
i16 %x,
i32 5
ret <8 x i16> %v
}
; CHECK-LABEL: same_const_one_replaced_f32x4:
; CHECK-NEXT: .functype same_const_one_replaced_f32x4 (f32) -> (v128)
; UNIMP-NEXT: v128.const $push[[L0:[0-9]+]]=, 0x1.5p5, 0x1.5p5, 0x0p0, 0x1.5p5
; UNIMP-NEXT: f32x4.replace_lane $push[[L1:[0-9]+]]=, $pop[[L0]], 2, $0
; UNIMP-NEXT: return $pop[[L1]]
; SIMD-VM: f32x4.splat
define <4 x float> @same_const_one_replaced_f32x4(float %x) {
%v = insertelement
<4 x float> <float 42., float 42., float 42., float 42.>,
float %x,
i32 2
ret <4 x float> %v
}
; CHECK-LABEL: different_const_one_replaced_f32x4:
; CHECK-NEXT: .functype different_const_one_replaced_f32x4 (f32) -> (v128)
; UNIMP-NEXT: v128.const $push[[L0:[0-9]+]]=, 0x1p0, 0x1p1, 0x0p0, 0x1p2
; UNIMP-NEXT: f32x4.replace_lane $push[[L1:[0-9]+]]=, $pop[[L0]], 2, $0
; UNIMP-NEXT: return $pop[[L1]]
; SIMD-VM: f32x4.splat
define <4 x float> @different_const_one_replaced_f32x4(float %x) {
%v = insertelement
<4 x float> <float 1., float 2., float 3., float 4.>,
float %x,
i32 2
ret <4 x float> %v
}
; CHECK-LABEL: splat_common_const_i32x4:
; CHECK-NEXT: .functype splat_common_const_i32x4 () -> (v128)
; UNIMP-NEXT: v128.const $push[[L0:[0-9]+]]=, 0, 3, 3, 1
; UNIMP-NEXT: return $pop[[L0]]
; SIMD-VM: i64x2.splat
define <4 x i32> @splat_common_const_i32x4() {
ret <4 x i32> <i32 undef, i32 3, i32 3, i32 1>
}
; CHECK-LABEL: splat_common_arg_i16x8:
; CHECK-NEXT: .functype splat_common_arg_i16x8 (i32, i32, i32) -> (v128)
; CHECK-NEXT: i16x8.splat $push[[L0:[0-9]+]]=, $2
; CHECK-NEXT: i16x8.replace_lane $push[[L1:[0-9]+]]=, $pop[[L0]], 0, $1
; CHECK-NEXT: i16x8.replace_lane $push[[L2:[0-9]+]]=, $pop[[L1]], 2, $0
; CHECK-NEXT: i16x8.replace_lane $push[[L3:[0-9]+]]=, $pop[[L2]], 4, $1
; CHECK-NEXT: i16x8.replace_lane $push[[L4:[0-9]+]]=, $pop[[L3]], 7, $1
; CHECK-NEXT: return $pop[[L4]]
define <8 x i16> @splat_common_arg_i16x8(i16 %a, i16 %b, i16 %c) {
%v0 = insertelement <8 x i16> undef, i16 %b, i32 0
%v1 = insertelement <8 x i16> %v0, i16 %c, i32 1
%v2 = insertelement <8 x i16> %v1, i16 %a, i32 2
%v3 = insertelement <8 x i16> %v2, i16 %c, i32 3
%v4 = insertelement <8 x i16> %v3, i16 %b, i32 4
%v5 = insertelement <8 x i16> %v4, i16 %c, i32 5
%v6 = insertelement <8 x i16> %v5, i16 %c, i32 6
%v7 = insertelement <8 x i16> %v6, i16 %b, i32 7
ret <8 x i16> %v7
}
; CHECK-LABEL: swizzle_one_i8x16:
; CHECK-NEXT: .functype swizzle_one_i8x16 (v128, v128) -> (v128)
; CHECK-NEXT: v8x16.swizzle $push[[L0:[0-9]+]]=, $0, $1
; CHECK-NEXT: return $pop[[L0]]
define <16 x i8> @swizzle_one_i8x16(<16 x i8> %src, <16 x i8> %mask) {
%m0 = extractelement <16 x i8> %mask, i32 0
%s0 = extractelement <16 x i8> %src, i8 %m0
%v0 = insertelement <16 x i8> undef, i8 %s0, i32 0
ret <16 x i8> %v0
}
; CHECK-LABEL: swizzle_all_i8x16:
; CHECK-NEXT: .functype swizzle_all_i8x16 (v128, v128) -> (v128)
; CHECK-NEXT: v8x16.swizzle $push[[L0:[0-9]+]]=, $0, $1
; CHECK-NEXT: return $pop[[L0]]
define <16 x i8> @swizzle_all_i8x16(<16 x i8> %src, <16 x i8> %mask) {
%m0 = extractelement <16 x i8> %mask, i32 0
%s0 = extractelement <16 x i8> %src, i8 %m0
%v0 = insertelement <16 x i8> undef, i8 %s0, i32 0
%m1 = extractelement <16 x i8> %mask, i32 1
%s1 = extractelement <16 x i8> %src, i8 %m1
%v1 = insertelement <16 x i8> %v0, i8 %s1, i32 1
%m2 = extractelement <16 x i8> %mask, i32 2
%s2 = extractelement <16 x i8> %src, i8 %m2
%v2 = insertelement <16 x i8> %v1, i8 %s2, i32 2
%m3 = extractelement <16 x i8> %mask, i32 3
%s3 = extractelement <16 x i8> %src, i8 %m3
%v3 = insertelement <16 x i8> %v2, i8 %s3, i32 3
%m4 = extractelement <16 x i8> %mask, i32 4
%s4 = extractelement <16 x i8> %src, i8 %m4
%v4 = insertelement <16 x i8> %v3, i8 %s4, i32 4
%m5 = extractelement <16 x i8> %mask, i32 5
%s5 = extractelement <16 x i8> %src, i8 %m5
%v5 = insertelement <16 x i8> %v4, i8 %s5, i32 5
%m6 = extractelement <16 x i8> %mask, i32 6
%s6 = extractelement <16 x i8> %src, i8 %m6
%v6 = insertelement <16 x i8> %v5, i8 %s6, i32 6
%m7 = extractelement <16 x i8> %mask, i32 7
%s7 = extractelement <16 x i8> %src, i8 %m7
%v7 = insertelement <16 x i8> %v6, i8 %s7, i32 7
%m8 = extractelement <16 x i8> %mask, i32 8
%s8 = extractelement <16 x i8> %src, i8 %m8
%v8 = insertelement <16 x i8> %v7, i8 %s8, i32 8
%m9 = extractelement <16 x i8> %mask, i32 9
%s9 = extractelement <16 x i8> %src, i8 %m9
%v9 = insertelement <16 x i8> %v8, i8 %s9, i32 9
%m10 = extractelement <16 x i8> %mask, i32 10
%s10 = extractelement <16 x i8> %src, i8 %m10
%v10 = insertelement <16 x i8> %v9, i8 %s10, i32 10
%m11 = extractelement <16 x i8> %mask, i32 11
%s11 = extractelement <16 x i8> %src, i8 %m11
%v11 = insertelement <16 x i8> %v10, i8 %s11, i32 11
%m12 = extractelement <16 x i8> %mask, i32 12
%s12 = extractelement <16 x i8> %src, i8 %m12
%v12 = insertelement <16 x i8> %v11, i8 %s12, i32 12
%m13 = extractelement <16 x i8> %mask, i32 13
%s13 = extractelement <16 x i8> %src, i8 %m13
%v13 = insertelement <16 x i8> %v12, i8 %s13, i32 13
%m14 = extractelement <16 x i8> %mask, i32 14
%s14 = extractelement <16 x i8> %src, i8 %m14
%v14 = insertelement <16 x i8> %v13, i8 %s14, i32 14
%m15 = extractelement <16 x i8> %mask, i32 15
%s15 = extractelement <16 x i8> %src, i8 %m15
%v15 = insertelement <16 x i8> %v14, i8 %s15, i32 15
ret <16 x i8> %v15
}
; CHECK-LABEL: swizzle_one_i16x8:
; CHECK-NEXT: .functype swizzle_one_i16x8 (v128, v128) -> (v128)
; CHECK-NOT: swizzle
; CHECK: return
define <8 x i16> @swizzle_one_i16x8(<8 x i16> %src, <8 x i16> %mask) {
%m0 = extractelement <8 x i16> %mask, i32 0
%s0 = extractelement <8 x i16> %src, i16 %m0
%v0 = insertelement <8 x i16> undef, i16 %s0, i32 0
ret <8 x i16> %v0
}
; CHECK-LABEL: mashup_swizzle_i8x16:
; CHECK-NEXT: .functype mashup_swizzle_i8x16 (v128, v128, i32) -> (v128)
; CHECK-NEXT: v8x16.swizzle $push[[L0:[0-9]+]]=, $0, $1
; CHECK: i8x16.replace_lane
; CHECK: i8x16.replace_lane
; CHECK: i8x16.replace_lane
; CHECK: i8x16.replace_lane
; CHECK: return
define <16 x i8> @mashup_swizzle_i8x16(<16 x i8> %src, <16 x i8> %mask, i8 %splatted) {
; swizzle 0
%m0 = extractelement <16 x i8> %mask, i32 0
%s0 = extractelement <16 x i8> %src, i8 %m0
%v0 = insertelement <16 x i8> undef, i8 %s0, i32 0
; swizzle 7
%m1 = extractelement <16 x i8> %mask, i32 7
%s1 = extractelement <16 x i8> %src, i8 %m1
%v1 = insertelement <16 x i8> %v0, i8 %s1, i32 7
; splat 3
%v2 = insertelement <16 x i8> %v1, i8 %splatted, i32 3
; splat 12
%v3 = insertelement <16 x i8> %v2, i8 %splatted, i32 12
; const 4
%v4 = insertelement <16 x i8> %v3, i8 42, i32 4
; const 14
%v5 = insertelement <16 x i8> %v4, i8 42, i32 14
ret <16 x i8> %v5
}
; CHECK-LABEL: mashup_const_i8x16:
; CHECK-NEXT: .functype mashup_const_i8x16 (v128, v128, i32) -> (v128)
; UNIMP: v128.const $push[[L0:[0-9]+]]=, 0, 0, 0, 0, 42, 0, 0, 0, 0, 0, 0, 0, 0, 0, 42, 0
; UNIMP: i8x16.replace_lane
; UNIMP: i8x16.replace_lane
; UNIMP: i8x16.replace_lane
; UNIMP: return
; SIMD-VM: i64x2.splat
define <16 x i8> @mashup_const_i8x16(<16 x i8> %src, <16 x i8> %mask, i8 %splatted) {
; swizzle 0
%m0 = extractelement <16 x i8> %mask, i32 0
%s0 = extractelement <16 x i8> %src, i8 %m0
%v0 = insertelement <16 x i8> undef, i8 %s0, i32 0
; splat 3
%v1 = insertelement <16 x i8> %v0, i8 %splatted, i32 3
; splat 12
%v2 = insertelement <16 x i8> %v1, i8 %splatted, i32 12
; const 4
%v3 = insertelement <16 x i8> %v2, i8 42, i32 4
; const 14
%v4 = insertelement <16 x i8> %v3, i8 42, i32 14
ret <16 x i8> %v4
}
; CHECK-LABEL: mashup_splat_i8x16:
; CHECK-NEXT: .functype mashup_splat_i8x16 (v128, v128, i32) -> (v128)
; CHECK: i8x16.splat $push[[L0:[0-9]+]]=, $2
; CHECK: i8x16.replace_lane
; CHECK: i8x16.replace_lane
; CHECK: return
define <16 x i8> @mashup_splat_i8x16(<16 x i8> %src, <16 x i8> %mask, i8 %splatted) {
; swizzle 0
%m0 = extractelement <16 x i8> %mask, i32 0
%s0 = extractelement <16 x i8> %src, i8 %m0
%v0 = insertelement <16 x i8> undef, i8 %s0, i32 0
; splat 3
%v1 = insertelement <16 x i8> %v0, i8 %splatted, i32 3
; splat 12
%v2 = insertelement <16 x i8> %v1, i8 %splatted, i32 12
; const 4
%v3 = insertelement <16 x i8> %v2, i8 42, i32 4
ret <16 x i8> %v3
}
; CHECK-LABEL: undef_const_insert_f32x4:
; CHECK-NEXT: .functype undef_const_insert_f32x4 () -> (v128)
; UNIMP-NEXT: v128.const $push[[L0:[0-9]+]]=, 0x0p0, 0x1.5p5, 0x0p0, 0x0p0
; UNIMP-NEXT: return $pop[[L0]]
; SIMD-VM: f32x4.splat
define <4 x float> @undef_const_insert_f32x4() {
%v = insertelement <4 x float> undef, float 42., i32 1
ret <4 x float> %v
}
; CHECK-LABEL: undef_arg_insert_i32x4:
; CHECK-NEXT: .functype undef_arg_insert_i32x4 (i32) -> (v128)
; CHECK-NEXT: i32x4.splat $push[[L0:[0-9]+]]=, $0
; CHECK-NEXT: return $pop[[L0]]
define <4 x i32> @undef_arg_insert_i32x4(i32 %x) {
%v = insertelement <4 x i32> undef, i32 %x, i32 3
ret <4 x i32> %v
}
; CHECK-LABEL: all_undef_i8x16:
; CHECK-NEXT: .functype all_undef_i8x16 () -> (v128)
; CHECK-NEXT: return $0
define <16 x i8> @all_undef_i8x16() {
%v = insertelement <16 x i8> undef, i8 undef, i32 4
ret <16 x i8> %v
}
; CHECK-LABEL: all_undef_f64x2:
; CHECK-NEXT: .functype all_undef_f64x2 () -> (v128)
; CHECK-NEXT: return $0
define <2 x double> @all_undef_f64x2() {
ret <2 x double> undef
}