Sander de Smalen d5e14ba88c [GlobalISel] NFC: Change LLT::vector to take ElementCount.
This also adds new interfaces for the fixed- and scalable case:
* LLT::fixed_vector
* LLT::scalable_vector

The strategy for migrating to the new interfaces was as follows:
* If the new LLT is a (modified) clone of another LLT, taking the
  same number of elements, then use LLT::vector(OtherTy.getElementCount())
  or if the number of elements is halfed/doubled, it uses .divideCoefficientBy(2)
  or operator*. That is because there is no reason to specifically restrict
  the types to 'fixed_vector'.
* If the algorithm works on the number of elements (as unsigned), then
  just use fixed_vector. This will need to be fixed up in the future when
  modifying the algorithm to also work for scalable vectors, and will need
  then need additional tests to confirm the behaviour works the same for
  scalable vectors.
* If the test used the '/*Scalable=*/true` flag of LLT::vector, then
  this is replaced by LLT::scalable_vector.

Reviewed By: aemerson

Differential Revision: https://reviews.llvm.org/D104451
2021-06-24 11:26:12 +01:00

249 lines
8.4 KiB
C++

//===- GISelUtilsTest.cpp -------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "llvm/CodeGen/GlobalISel/Utils.h"
#include "gtest/gtest.h"
using namespace llvm;
namespace {
static const LLT S1 = LLT::scalar(1);
static const LLT S8 = LLT::scalar(8);
static const LLT S16 = LLT::scalar(16);
static const LLT S32 = LLT::scalar(32);
static const LLT S64 = LLT::scalar(64);
static const LLT P0 = LLT::pointer(0, 64);
static const LLT P1 = LLT::pointer(1, 32);
static const LLT V2S8 = LLT::fixed_vector(2, 8);
static const LLT V4S8 = LLT::fixed_vector(4, 8);
static const LLT V8S8 = LLT::fixed_vector(8, 8);
static const LLT V2S16 = LLT::fixed_vector(2, 16);
static const LLT V3S16 = LLT::fixed_vector(3, 16);
static const LLT V4S16 = LLT::fixed_vector(4, 16);
static const LLT V2S32 = LLT::fixed_vector(2, 32);
static const LLT V3S32 = LLT::fixed_vector(3, 32);
static const LLT V4S32 = LLT::fixed_vector(4, 32);
static const LLT V6S32 = LLT::fixed_vector(6, 32);
static const LLT V2S64 = LLT::fixed_vector(2, 64);
static const LLT V3S64 = LLT::fixed_vector(3, 64);
static const LLT V4S64 = LLT::fixed_vector(4, 64);
static const LLT V2P0 = LLT::fixed_vector(2, P0);
static const LLT V3P0 = LLT::fixed_vector(3, P0);
static const LLT V4P0 = LLT::fixed_vector(4, P0);
static const LLT V6P0 = LLT::fixed_vector(6, P0);
static const LLT V2P1 = LLT::fixed_vector(2, P1);
static const LLT V4P1 = LLT::fixed_vector(4, P1);
TEST(GISelUtilsTest, getGCDType) {
EXPECT_EQ(S1, getGCDType(S1, S1));
EXPECT_EQ(S32, getGCDType(S32, S32));
EXPECT_EQ(S1, getGCDType(S1, S32));
EXPECT_EQ(S1, getGCDType(S32, S1));
EXPECT_EQ(S16, getGCDType(S16, S32));
EXPECT_EQ(S16, getGCDType(S32, S16));
EXPECT_EQ(V2S32, getGCDType(V2S32, V2S32));
EXPECT_EQ(S32, getGCDType(V3S32, V2S32));
EXPECT_EQ(S32, getGCDType(V2S32, V3S32));
EXPECT_EQ(V2S16, getGCDType(V4S16, V2S16));
EXPECT_EQ(V2S16, getGCDType(V2S16, V4S16));
EXPECT_EQ(V2S32, getGCDType(V4S32, V2S32));
EXPECT_EQ(V2S32, getGCDType(V2S32, V4S32));
EXPECT_EQ(S16, getGCDType(P0, S16));
EXPECT_EQ(S16, getGCDType(S16, P0));
EXPECT_EQ(S32, getGCDType(P0, S32));
EXPECT_EQ(S32, getGCDType(S32, P0));
EXPECT_EQ(P0, getGCDType(P0, S64));
EXPECT_EQ(S64, getGCDType(S64, P0));
EXPECT_EQ(S32, getGCDType(P0, P1));
EXPECT_EQ(S32, getGCDType(P1, P0));
EXPECT_EQ(P0, getGCDType(V3P0, V2P0));
EXPECT_EQ(P0, getGCDType(V2P0, V3P0));
EXPECT_EQ(P0, getGCDType(P0, V2P0));
EXPECT_EQ(P0, getGCDType(V2P0, P0));
EXPECT_EQ(V2P0, getGCDType(V2P0, V2P0));
EXPECT_EQ(P0, getGCDType(V3P0, V2P0));
EXPECT_EQ(P0, getGCDType(V2P0, V3P0));
EXPECT_EQ(V2P0, getGCDType(V4P0, V2P0));
EXPECT_EQ(V2P0, getGCDType(V2P0, V4P1));
EXPECT_EQ(V4P1, getGCDType(V4P1, V2P0));
EXPECT_EQ(V2P0, getGCDType(V4P0, V4P1));
EXPECT_EQ(V4P1, getGCDType(V4P1, V4P0));
// Elements have same size, but have different pointeriness, so prefer the
// original element type.
EXPECT_EQ(V2P0, getGCDType(V2P0, V4S64));
EXPECT_EQ(V2S64, getGCDType(V4S64, V2P0));
EXPECT_EQ(V2S16, getGCDType(V2S16, V4P1));
EXPECT_EQ(P1, getGCDType(V4P1, V2S16));
EXPECT_EQ(V2P1, getGCDType(V4P1, V4S16));
EXPECT_EQ(V4S16, getGCDType(V4S16, V2P1));
EXPECT_EQ(P0, getGCDType(P0, V2S64));
EXPECT_EQ(S64, getGCDType(V2S64, P0));
EXPECT_EQ(S16, getGCDType(V2S16, V3S16));
EXPECT_EQ(S16, getGCDType(V3S16, V2S16));
EXPECT_EQ(S16, getGCDType(V3S16, S16));
EXPECT_EQ(S16, getGCDType(S16, V3S16));
EXPECT_EQ(V2S16, getGCDType(V2S16, V2S32));
EXPECT_EQ(S32, getGCDType(V2S32, V2S16));
EXPECT_EQ(V4S8, getGCDType(V4S8, V2S32));
EXPECT_EQ(S32, getGCDType(V2S32, V4S8));
// Test cases where neither element type nicely divides.
EXPECT_EQ(LLT::scalar(3),
getGCDType(LLT::fixed_vector(3, 5), LLT::fixed_vector(2, 6)));
EXPECT_EQ(LLT::scalar(3),
getGCDType(LLT::fixed_vector(2, 6), LLT::fixed_vector(3, 5)));
// Have to go smaller than a pointer element.
EXPECT_EQ(LLT::scalar(3), getGCDType(LLT::fixed_vector(2, LLT::pointer(3, 6)),
LLT::fixed_vector(3, 5)));
EXPECT_EQ(LLT::scalar(3),
getGCDType(LLT::fixed_vector(3, 5),
LLT::fixed_vector(2, LLT::pointer(3, 6))));
EXPECT_EQ(V4S8, getGCDType(V4S8, S32));
EXPECT_EQ(S32, getGCDType(S32, V4S8));
EXPECT_EQ(V4S8, getGCDType(V4S8, P1));
EXPECT_EQ(P1, getGCDType(P1, V4S8));
EXPECT_EQ(V2S8, getGCDType(V2S8, V4S16));
EXPECT_EQ(S16, getGCDType(V4S16, V2S8));
EXPECT_EQ(S8, getGCDType(V2S8, LLT::fixed_vector(4, 2)));
EXPECT_EQ(LLT::fixed_vector(4, 2), getGCDType(LLT::fixed_vector(4, 2), S8));
EXPECT_EQ(LLT::pointer(4, 8),
getGCDType(LLT::fixed_vector(2, LLT::pointer(4, 8)),
LLT::fixed_vector(4, 2)));
EXPECT_EQ(LLT::fixed_vector(4, 2),
getGCDType(LLT::fixed_vector(4, 2),
LLT::fixed_vector(2, LLT::pointer(4, 8))));
EXPECT_EQ(LLT::scalar(4), getGCDType(LLT::fixed_vector(3, 4), S8));
EXPECT_EQ(LLT::scalar(4), getGCDType(S8, LLT::fixed_vector(3, 4)));
}
TEST(GISelUtilsTest, getLCMType) {
EXPECT_EQ(S1, getLCMType(S1, S1));
EXPECT_EQ(S32, getLCMType(S32, S1));
EXPECT_EQ(S32, getLCMType(S1, S32));
EXPECT_EQ(S32, getLCMType(S32, S32));
EXPECT_EQ(S32, getLCMType(S32, S16));
EXPECT_EQ(S32, getLCMType(S16, S32));
EXPECT_EQ(S64, getLCMType(S64, P0));
EXPECT_EQ(P0, getLCMType(P0, S64));
EXPECT_EQ(P0, getLCMType(S32, P0));
EXPECT_EQ(P0, getLCMType(P0, S32));
EXPECT_EQ(S32, getLCMType(S32, P1));
EXPECT_EQ(P1, getLCMType(P1, S32));
EXPECT_EQ(P0, getLCMType(P0, P0));
EXPECT_EQ(P1, getLCMType(P1, P1));
EXPECT_EQ(P0, getLCMType(P0, P1));
EXPECT_EQ(P0, getLCMType(P1, P0));
EXPECT_EQ(V2S32, getLCMType(V2S32, V2S32));
EXPECT_EQ(V2S32, getLCMType(V2S32, S32));
EXPECT_EQ(V2S32, getLCMType(S32, V2S32));
EXPECT_EQ(V2S32, getLCMType(V2S32, V2S32));
EXPECT_EQ(V6S32, getLCMType(V2S32, V3S32));
EXPECT_EQ(V6S32, getLCMType(V3S32, V2S32));
EXPECT_EQ(LLT::fixed_vector(12, S32), getLCMType(V4S32, V3S32));
EXPECT_EQ(LLT::fixed_vector(12, S32), getLCMType(V3S32, V4S32));
EXPECT_EQ(V2P0, getLCMType(V2P0, V2P0));
EXPECT_EQ(V2P0, getLCMType(V2P0, P0));
EXPECT_EQ(V2P0, getLCMType(P0, V2P0));
EXPECT_EQ(V2P0, getLCMType(V2P0, V2P0));
EXPECT_EQ(V6P0, getLCMType(V2P0, V3P0));
EXPECT_EQ(V6P0, getLCMType(V3P0, V2P0));
EXPECT_EQ(LLT::fixed_vector(12, P0), getLCMType(V4P0, V3P0));
EXPECT_EQ(LLT::fixed_vector(12, P0), getLCMType(V3P0, V4P0));
EXPECT_EQ(LLT::fixed_vector(12, S64), getLCMType(V4S64, V3P0));
EXPECT_EQ(LLT::fixed_vector(12, P0), getLCMType(V3P0, V4S64));
EXPECT_EQ(LLT::fixed_vector(12, P0), getLCMType(V4P0, V3S64));
EXPECT_EQ(LLT::fixed_vector(12, S64), getLCMType(V3S64, V4P0));
EXPECT_EQ(V2P0, getLCMType(V2P0, S32));
EXPECT_EQ(V4S32, getLCMType(S32, V2P0));
EXPECT_EQ(V2P0, getLCMType(V2P0, S64));
EXPECT_EQ(V2S64, getLCMType(S64, V2P0));
EXPECT_EQ(V2P0, getLCMType(V2P0, V2P1));
EXPECT_EQ(V4P1, getLCMType(V2P1, V2P0));
EXPECT_EQ(V2P0, getLCMType(V2P0, V4P1));
EXPECT_EQ(V4P1, getLCMType(V4P1, V2P0));
EXPECT_EQ(V2S32, getLCMType(V2S32, S64));
EXPECT_EQ(S64, getLCMType(S64, V2S32));
EXPECT_EQ(V4S16, getLCMType(V4S16, V2S32));
EXPECT_EQ(V2S32, getLCMType(V2S32, V4S16));
EXPECT_EQ(V2S32, getLCMType(V2S32, V4S8));
EXPECT_EQ(V8S8, getLCMType(V4S8, V2S32));
EXPECT_EQ(V2S16, getLCMType(V2S16, V4S8));
EXPECT_EQ(V4S8, getLCMType(V4S8, V2S16));
EXPECT_EQ(LLT::fixed_vector(6, S16), getLCMType(V3S16, V4S8));
EXPECT_EQ(LLT::fixed_vector(12, S8), getLCMType(V4S8, V3S16));
EXPECT_EQ(V4S16, getLCMType(V4S16, V4S8));
EXPECT_EQ(V8S8, getLCMType(V4S8, V4S16));
EXPECT_EQ(LLT::fixed_vector(6, 4), getLCMType(LLT::fixed_vector(3, 4), S8));
EXPECT_EQ(LLT::fixed_vector(3, 8), getLCMType(S8, LLT::fixed_vector(3, 4)));
EXPECT_EQ(LLT::fixed_vector(6, 4),
getLCMType(LLT::fixed_vector(3, 4), LLT::pointer(4, 8)));
EXPECT_EQ(LLT::fixed_vector(3, LLT::pointer(4, 8)),
getLCMType(LLT::pointer(4, 8), LLT::fixed_vector(3, 4)));
EXPECT_EQ(V2S64, getLCMType(V2S64, P0));
EXPECT_EQ(V2P0, getLCMType(P0, V2S64));
EXPECT_EQ(V2S64, getLCMType(V2S64, P1));
EXPECT_EQ(V4P1, getLCMType(P1, V2S64));
}
}