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llvm-project/llvm/unittests/Bitcode/DataLayoutUpgradeTest.cpp
hev 46edc02eaa
[LoongArch] Adjust LA64 data layout by using n32:64 in layout string (#93814) 
Although i32 type is illegal in the backend, LA64 has pretty good
support for i32 types by using W instructions.

By adding n32 to the DataLayout string, middle end optimizations will
consider i32 to be a native type. One known effect of this is enabling
LoopStrengthReduce on loops with i32 induction variables. This can be
beneficial because C/C++ code often has loops with i32 induction
variables due to the use of `int` or `unsigned int`.

If this patch exposes performance issues, those are better addressed by
tuning LSR or other passes.
2024-06-06 14:05:56 +08:00

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//===- DataLayoutUpgradeTest.cpp - Tests for DataLayout upgrades ----------===//
//
// 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/IR/AutoUpgrade.h"
#include "gtest/gtest.h"
using namespace llvm;
namespace {
TEST(DataLayoutUpgradeTest, ValidDataLayoutUpgrade) {
std::string DL1 =
UpgradeDataLayoutString("e-m:e-p:32:32-i64:64-f80:128-n8:16:32:64-S128",
"x86_64-unknown-linux-gnu");
std::string DL2 = UpgradeDataLayoutString(
"e-m:w-p:32:32-i64:64-f80:32-n8:16:32-S32", "i686-pc-windows-msvc");
std::string DL3 = UpgradeDataLayoutString(
"e-m:o-i64:64-f80:128-n8:16:32:64-S128", "x86_64-apple-macosx");
std::string DL4 =
UpgradeDataLayoutString("e-m:o-i64:64-i128:128-n32:64-S128", "aarch64--");
EXPECT_EQ(DL1,
"e-m:e-p:32:32-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128"
"-f80:128-n8:16:32:64-S128");
EXPECT_EQ(DL2,
"e-m:w-p:32:32-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128"
"-f80:128-n8:16:32-S32");
EXPECT_EQ(DL3, "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:"
"128-n8:16:32:64-S128");
EXPECT_EQ(DL4, "e-m:o-i64:64-i128:128-n32:64-S128-Fn32");
// Check that AMDGPU targets add -G1 if it's not present.
EXPECT_EQ(UpgradeDataLayoutString("e-p:32:32", "r600"), "e-p:32:32-G1");
// and that ANDGCN adds p7 and p8 as well.
EXPECT_EQ(
UpgradeDataLayoutString("e-p:64:64", "amdgcn"),
"e-p:64:64-G1-ni:7:8:9-p7:160:256:256:32-p8:128:128-p9:192:256:256:32");
EXPECT_EQ(
UpgradeDataLayoutString("e-p:64:64-G1", "amdgcn"),
"e-p:64:64-G1-ni:7:8:9-p7:160:256:256:32-p8:128:128-p9:192:256:256:32");
// but that r600 does not.
EXPECT_EQ(UpgradeDataLayoutString("e-p:32:32-G1", "r600"), "e-p:32:32-G1");
// Ensure that the non-integral direction for address space 8 doesn't get
// added in to pointer declarations.
EXPECT_EQ(
UpgradeDataLayoutString(
"e-p:64:64-p1:64:64-p2:32:32-p3:32:32-p4:64:64-p5:32:32-p6:32:32-i64:"
"64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-"
"v1024:1024-v2048:2048-n32:64-S32-A5-G1-ni:7",
"amdgcn"),
"e-p:64:64-p1:64:64-p2:32:32-p3:32:32-p4:64:64-p5:32:32-p6:32:32-i64:64-"
"v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:"
"1024-v2048:2048-n32:64-S32-A5-G1-ni:7:8:9-p7:160:256:256:32-p8:128:128-"
"p9:192:256:256:32");
// Check that RISCV64 upgrades -n64 to -n32:64.
EXPECT_EQ(UpgradeDataLayoutString("e-m:e-p:64:64-i64:64-i128:128-n64-S128",
"riscv64"),
"e-m:e-p:64:64-i64:64-i128:128-n32:64-S128");
// Check that LoongArch64 upgrades -n64 to -n32:64.
EXPECT_EQ(UpgradeDataLayoutString("e-m:e-p:64:64-i64:64-i128:128-n64-S128",
"loongarch64"),
"e-m:e-p:64:64-i64:64-i128:128-n32:64-S128");
// Check that SPIR && SPIRV targets add -G1 if it's not present.
EXPECT_EQ(UpgradeDataLayoutString("e-p:32:32", "spir"), "e-p:32:32-G1");
EXPECT_EQ(UpgradeDataLayoutString("e-p:32:32", "spir64"), "e-p:32:32-G1");
EXPECT_EQ(UpgradeDataLayoutString("e-p:32:32", "spirv32"), "e-p:32:32-G1");
EXPECT_EQ(UpgradeDataLayoutString("e-p:32:32", "spirv64"), "e-p:32:32-G1");
// but that SPIRV Logical does not.
EXPECT_EQ(UpgradeDataLayoutString("e-p:32:32", "spirv"), "e-p:32:32");
}
TEST(DataLayoutUpgradeTest, NoDataLayoutUpgrade) {
std::string DL1 = UpgradeDataLayoutString(
"e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-i128:128:128-"
"f32:32:32"
"-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
"-n8:16:32:64-S128",
"x86_64-unknown-linux-gnu");
std::string DL2 = UpgradeDataLayoutString("e-m:e-i64:64-n32:64",
"powerpc64le-unknown-linux-gnu");
std::string DL3 = UpgradeDataLayoutString(
"e-m:o-i64:64-i128:128-n32:64-S128-Fn32", "aarch64--");
EXPECT_EQ(
DL1,
"e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-i128:128:128"
"-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64"
"-f80:128:128-n8:16:32:64-S128");
EXPECT_EQ(DL2, "e-m:e-i64:64-n32:64");
EXPECT_EQ(DL3, "e-m:o-i64:64-i128:128-n32:64-S128-Fn32");
// Check that AMDGPU targets don't add -G1 if there is already a -G flag.
EXPECT_EQ(UpgradeDataLayoutString("e-p:32:32-G2", "r600"), "e-p:32:32-G2");
EXPECT_EQ(UpgradeDataLayoutString("G2", "r600"), "G2");
EXPECT_EQ(
UpgradeDataLayoutString("e-p:64:64-G2", "amdgcn"),
"e-p:64:64-G2-ni:7:8:9-p7:160:256:256:32-p8:128:128-p9:192:256:256:32");
EXPECT_EQ(
UpgradeDataLayoutString("G2-e-p:64:64", "amdgcn"),
"G2-e-p:64:64-ni:7:8:9-p7:160:256:256:32-p8:128:128-p9:192:256:256:32");
EXPECT_EQ(
UpgradeDataLayoutString("e-p:64:64-G0", "amdgcn"),
"e-p:64:64-G0-ni:7:8:9-p7:160:256:256:32-p8:128:128-p9:192:256:256:32");
// Check that AMDGCN targets don't add already declared address space 7.
EXPECT_EQ(UpgradeDataLayoutString("e-p:64:64-p7:64:64", "amdgcn"),
"e-p:64:64-p7:64:64-G1-ni:7:8:9-p8:128:128-p9:192:256:256:32");
EXPECT_EQ(UpgradeDataLayoutString("p7:64:64-G2-e-p:64:64", "amdgcn"),
"p7:64:64-G2-e-p:64:64-ni:7:8:9-p8:128:128-p9:192:256:256:32");
EXPECT_EQ(UpgradeDataLayoutString("e-p:64:64-p7:64:64-G1", "amdgcn"),
"e-p:64:64-p7:64:64-G1-ni:7:8:9-p8:128:128-p9:192:256:256:32");
// Check that SPIR & SPIRV targets don't add -G1 if there is already a -G
// flag.
EXPECT_EQ(UpgradeDataLayoutString("e-p:32:32-G2", "spir"), "e-p:32:32-G2");
EXPECT_EQ(UpgradeDataLayoutString("e-p:32:32-G2", "spir64"), "e-p:32:32-G2");
EXPECT_EQ(UpgradeDataLayoutString("e-p:32:32-G2", "spirv32"), "e-p:32:32-G2");
EXPECT_EQ(UpgradeDataLayoutString("e-p:32:32-G2", "spirv64"), "e-p:32:32-G2");
EXPECT_EQ(UpgradeDataLayoutString("G2", "spir"), "G2");
EXPECT_EQ(UpgradeDataLayoutString("G2", "spir64"), "G2");
EXPECT_EQ(UpgradeDataLayoutString("G2", "spirv32"), "G2");
EXPECT_EQ(UpgradeDataLayoutString("G2", "spirv64"), "G2");
}
TEST(DataLayoutUpgradeTest, EmptyDataLayout) {
std::string DL1 = UpgradeDataLayoutString("", "x86_64-unknown-linux-gnu");
std::string DL2 = UpgradeDataLayoutString(
"e-m:e-p:32:32-i64:64-f80:128-n8:16:32:64-S128", "");
EXPECT_EQ(DL1, "");
EXPECT_EQ(DL2, "e-m:e-p:32:32-i64:64-f80:128-n8:16:32:64-S128");
// Check that AMDGPU targets add G1 if it's not present.
EXPECT_EQ(UpgradeDataLayoutString("", "r600"), "G1");
EXPECT_EQ(UpgradeDataLayoutString("", "amdgcn"),
"G1-ni:7:8:9-p7:160:256:256:32-p8:128:128-p9:192:256:256:32");
// Check that SPIR & SPIRV targets add G1 if it's not present.
EXPECT_EQ(UpgradeDataLayoutString("", "spir"), "G1");
EXPECT_EQ(UpgradeDataLayoutString("", "spir64"), "G1");
EXPECT_EQ(UpgradeDataLayoutString("", "spirv32"), "G1");
EXPECT_EQ(UpgradeDataLayoutString("", "spirv64"), "G1");
// but SPIRV Logical does not.
EXPECT_EQ(UpgradeDataLayoutString("", "spirv"), "");
}
} // end namespace
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