forked from OSchip/llvm-project
261 lines
10 KiB
C++
261 lines
10 KiB
C++
//===- llvm/unittest/IR/ConstantsTest.cpp - Constants unit tests ----------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/IR/Constants.h"
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#include "llvm/IR/DerivedTypes.h"
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#include "llvm/IR/InstrTypes.h"
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#include "llvm/IR/Instruction.h"
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#include "llvm/IR/LLVMContext.h"
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#include "llvm/IR/Module.h"
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#include "gtest/gtest.h"
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namespace llvm {
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namespace {
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TEST(ConstantsTest, Integer_i1) {
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IntegerType* Int1 = IntegerType::get(getGlobalContext(), 1);
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Constant* One = ConstantInt::get(Int1, 1, true);
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Constant* Zero = ConstantInt::get(Int1, 0);
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Constant* NegOne = ConstantInt::get(Int1, static_cast<uint64_t>(-1), true);
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EXPECT_EQ(NegOne, ConstantInt::getSigned(Int1, -1));
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Constant* Undef = UndefValue::get(Int1);
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// Input: @b = constant i1 add(i1 1 , i1 1)
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// Output: @b = constant i1 false
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EXPECT_EQ(Zero, ConstantExpr::getAdd(One, One));
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// @c = constant i1 add(i1 -1, i1 1)
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// @c = constant i1 false
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EXPECT_EQ(Zero, ConstantExpr::getAdd(NegOne, One));
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// @d = constant i1 add(i1 -1, i1 -1)
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// @d = constant i1 false
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EXPECT_EQ(Zero, ConstantExpr::getAdd(NegOne, NegOne));
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// @e = constant i1 sub(i1 -1, i1 1)
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// @e = constant i1 false
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EXPECT_EQ(Zero, ConstantExpr::getSub(NegOne, One));
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// @f = constant i1 sub(i1 1 , i1 -1)
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// @f = constant i1 false
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EXPECT_EQ(Zero, ConstantExpr::getSub(One, NegOne));
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// @g = constant i1 sub(i1 1 , i1 1)
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// @g = constant i1 false
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EXPECT_EQ(Zero, ConstantExpr::getSub(One, One));
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// @h = constant i1 shl(i1 1 , i1 1) ; undefined
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// @h = constant i1 undef
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EXPECT_EQ(Undef, ConstantExpr::getShl(One, One));
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// @i = constant i1 shl(i1 1 , i1 0)
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// @i = constant i1 true
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EXPECT_EQ(One, ConstantExpr::getShl(One, Zero));
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// @j = constant i1 lshr(i1 1, i1 1) ; undefined
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// @j = constant i1 undef
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EXPECT_EQ(Undef, ConstantExpr::getLShr(One, One));
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// @m = constant i1 ashr(i1 1, i1 1) ; undefined
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// @m = constant i1 undef
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EXPECT_EQ(Undef, ConstantExpr::getAShr(One, One));
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// @n = constant i1 mul(i1 -1, i1 1)
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// @n = constant i1 true
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EXPECT_EQ(One, ConstantExpr::getMul(NegOne, One));
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// @o = constant i1 sdiv(i1 -1, i1 1) ; overflow
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// @o = constant i1 true
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EXPECT_EQ(One, ConstantExpr::getSDiv(NegOne, One));
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// @p = constant i1 sdiv(i1 1 , i1 -1); overflow
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// @p = constant i1 true
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EXPECT_EQ(One, ConstantExpr::getSDiv(One, NegOne));
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// @q = constant i1 udiv(i1 -1, i1 1)
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// @q = constant i1 true
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EXPECT_EQ(One, ConstantExpr::getUDiv(NegOne, One));
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// @r = constant i1 udiv(i1 1, i1 -1)
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// @r = constant i1 true
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EXPECT_EQ(One, ConstantExpr::getUDiv(One, NegOne));
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// @s = constant i1 srem(i1 -1, i1 1) ; overflow
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// @s = constant i1 false
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EXPECT_EQ(Zero, ConstantExpr::getSRem(NegOne, One));
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// @t = constant i1 urem(i1 -1, i1 1)
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// @t = constant i1 false
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EXPECT_EQ(Zero, ConstantExpr::getURem(NegOne, One));
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// @u = constant i1 srem(i1 1, i1 -1) ; overflow
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// @u = constant i1 false
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EXPECT_EQ(Zero, ConstantExpr::getSRem(One, NegOne));
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}
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TEST(ConstantsTest, IntSigns) {
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IntegerType* Int8Ty = Type::getInt8Ty(getGlobalContext());
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EXPECT_EQ(100, ConstantInt::get(Int8Ty, 100, false)->getSExtValue());
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EXPECT_EQ(100, ConstantInt::get(Int8Ty, 100, true)->getSExtValue());
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EXPECT_EQ(100, ConstantInt::getSigned(Int8Ty, 100)->getSExtValue());
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EXPECT_EQ(-50, ConstantInt::get(Int8Ty, 206)->getSExtValue());
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EXPECT_EQ(-50, ConstantInt::getSigned(Int8Ty, -50)->getSExtValue());
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EXPECT_EQ(206U, ConstantInt::getSigned(Int8Ty, -50)->getZExtValue());
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// Overflow is handled by truncation.
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EXPECT_EQ(0x3b, ConstantInt::get(Int8Ty, 0x13b)->getSExtValue());
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}
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TEST(ConstantsTest, FP128Test) {
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Type *FP128Ty = Type::getFP128Ty(getGlobalContext());
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IntegerType *Int128Ty = Type::getIntNTy(getGlobalContext(), 128);
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Constant *Zero128 = Constant::getNullValue(Int128Ty);
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Constant *X = ConstantExpr::getUIToFP(Zero128, FP128Ty);
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EXPECT_TRUE(isa<ConstantFP>(X));
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}
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TEST(ConstantsTest, PointerCast) {
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LLVMContext &C(getGlobalContext());
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Type *Int8PtrTy = Type::getInt8PtrTy(C);
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Type *Int32PtrTy = Type::getInt32PtrTy(C);
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Type *Int64Ty = Type::getInt64Ty(C);
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VectorType *Int8PtrVecTy = VectorType::get(Int8PtrTy, 4);
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VectorType *Int32PtrVecTy = VectorType::get(Int32PtrTy, 4);
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VectorType *Int64VecTy = VectorType::get(Int64Ty, 4);
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// ptrtoint i8* to i64
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EXPECT_EQ(Constant::getNullValue(Int64Ty),
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ConstantExpr::getPointerCast(
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Constant::getNullValue(Int8PtrTy), Int64Ty));
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// bitcast i8* to i32*
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EXPECT_EQ(Constant::getNullValue(Int32PtrTy),
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ConstantExpr::getPointerCast(
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Constant::getNullValue(Int8PtrTy), Int32PtrTy));
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// ptrtoint <4 x i8*> to <4 x i64>
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EXPECT_EQ(Constant::getNullValue(Int64VecTy),
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ConstantExpr::getPointerCast(
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Constant::getNullValue(Int8PtrVecTy), Int64VecTy));
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// bitcast <4 x i8*> to <4 x i32*>
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EXPECT_EQ(Constant::getNullValue(Int32PtrVecTy),
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ConstantExpr::getPointerCast(
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Constant::getNullValue(Int8PtrVecTy), Int32PtrVecTy));
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}
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#define CHECK(x, y) { \
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std::string __s; \
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raw_string_ostream __o(__s); \
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Instruction *__I = cast<ConstantExpr>(x)->getAsInstruction(); \
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__I->print(__o); \
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delete __I; \
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__o.flush(); \
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EXPECT_EQ(std::string(" <badref> = " y), __s); \
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}
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TEST(ConstantsTest, AsInstructionsTest) {
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OwningPtr<Module> M(new Module("MyModule", getGlobalContext()));
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Type *Int64Ty = Type::getInt64Ty(getGlobalContext());
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Type *Int32Ty = Type::getInt32Ty(getGlobalContext());
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Type *Int16Ty = Type::getInt16Ty(getGlobalContext());
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Type *Int1Ty = Type::getInt1Ty(getGlobalContext());
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Type *FloatTy = Type::getFloatTy(getGlobalContext());
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Type *DoubleTy = Type::getDoubleTy(getGlobalContext());
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Constant *Global = M->getOrInsertGlobal("dummy",
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PointerType::getUnqual(Int32Ty));
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Constant *Global2 = M->getOrInsertGlobal("dummy2",
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PointerType::getUnqual(Int32Ty));
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Constant *P0 = ConstantExpr::getPtrToInt(Global, Int32Ty);
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Constant *P1 = ConstantExpr::getUIToFP(P0, FloatTy);
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Constant *P2 = ConstantExpr::getUIToFP(P0, DoubleTy);
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Constant *P3 = ConstantExpr::getTrunc(P0, Int1Ty);
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Constant *P4 = ConstantExpr::getPtrToInt(Global2, Int32Ty);
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Constant *P5 = ConstantExpr::getUIToFP(P4, FloatTy);
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Constant *P6 = ConstantExpr::getBitCast(P4, VectorType::get(Int16Ty, 2));
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Constant *One = ConstantInt::get(Int32Ty, 1);
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#define P0STR "ptrtoint (i32** @dummy to i32)"
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#define P1STR "uitofp (i32 ptrtoint (i32** @dummy to i32) to float)"
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#define P2STR "uitofp (i32 ptrtoint (i32** @dummy to i32) to double)"
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#define P3STR "ptrtoint (i32** @dummy to i1)"
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#define P4STR "ptrtoint (i32** @dummy2 to i32)"
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#define P5STR "uitofp (i32 ptrtoint (i32** @dummy2 to i32) to float)"
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#define P6STR "bitcast (i32 ptrtoint (i32** @dummy2 to i32) to <2 x i16>)"
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CHECK(ConstantExpr::getNeg(P0), "sub i32 0, " P0STR);
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CHECK(ConstantExpr::getFNeg(P1), "fsub float -0.000000e+00, " P1STR);
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CHECK(ConstantExpr::getNot(P0), "xor i32 " P0STR ", -1");
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CHECK(ConstantExpr::getAdd(P0, P0), "add i32 " P0STR ", " P0STR);
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CHECK(ConstantExpr::getAdd(P0, P0, false, true), "add nsw i32 " P0STR ", "
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P0STR);
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CHECK(ConstantExpr::getAdd(P0, P0, true, true), "add nuw nsw i32 " P0STR ", "
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P0STR);
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CHECK(ConstantExpr::getFAdd(P1, P1), "fadd float " P1STR ", " P1STR);
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CHECK(ConstantExpr::getSub(P0, P0), "sub i32 " P0STR ", " P0STR);
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CHECK(ConstantExpr::getFSub(P1, P1), "fsub float " P1STR ", " P1STR);
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CHECK(ConstantExpr::getMul(P0, P0), "mul i32 " P0STR ", " P0STR);
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CHECK(ConstantExpr::getFMul(P1, P1), "fmul float " P1STR ", " P1STR);
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CHECK(ConstantExpr::getUDiv(P0, P0), "udiv i32 " P0STR ", " P0STR);
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CHECK(ConstantExpr::getSDiv(P0, P0), "sdiv i32 " P0STR ", " P0STR);
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CHECK(ConstantExpr::getFDiv(P1, P1), "fdiv float " P1STR ", " P1STR);
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CHECK(ConstantExpr::getURem(P0, P0), "urem i32 " P0STR ", " P0STR);
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CHECK(ConstantExpr::getSRem(P0, P0), "srem i32 " P0STR ", " P0STR);
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CHECK(ConstantExpr::getFRem(P1, P1), "frem float " P1STR ", " P1STR);
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CHECK(ConstantExpr::getAnd(P0, P0), "and i32 " P0STR ", " P0STR);
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CHECK(ConstantExpr::getOr(P0, P0), "or i32 " P0STR ", " P0STR);
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CHECK(ConstantExpr::getXor(P0, P0), "xor i32 " P0STR ", " P0STR);
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CHECK(ConstantExpr::getShl(P0, P0), "shl i32 " P0STR ", " P0STR);
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CHECK(ConstantExpr::getShl(P0, P0, true), "shl nuw i32 " P0STR ", " P0STR);
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CHECK(ConstantExpr::getShl(P0, P0, false, true), "shl nsw i32 " P0STR ", "
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P0STR);
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CHECK(ConstantExpr::getLShr(P0, P0, false), "lshr i32 " P0STR ", " P0STR);
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CHECK(ConstantExpr::getLShr(P0, P0, true), "lshr exact i32 " P0STR ", " P0STR);
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CHECK(ConstantExpr::getAShr(P0, P0, false), "ashr i32 " P0STR ", " P0STR);
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CHECK(ConstantExpr::getAShr(P0, P0, true), "ashr exact i32 " P0STR ", " P0STR);
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CHECK(ConstantExpr::getSExt(P0, Int64Ty), "sext i32 " P0STR " to i64");
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CHECK(ConstantExpr::getZExt(P0, Int64Ty), "zext i32 " P0STR " to i64");
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CHECK(ConstantExpr::getFPTrunc(P2, FloatTy), "fptrunc double " P2STR
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" to float");
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CHECK(ConstantExpr::getFPExtend(P1, DoubleTy), "fpext float " P1STR
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" to double");
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CHECK(ConstantExpr::getExactUDiv(P0, P0), "udiv exact i32 " P0STR ", " P0STR);
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CHECK(ConstantExpr::getSelect(P3, P0, P4), "select i1 " P3STR ", i32 " P0STR
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", i32 " P4STR);
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CHECK(ConstantExpr::getICmp(CmpInst::ICMP_EQ, P0, P4), "icmp eq i32 " P0STR
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", " P4STR);
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CHECK(ConstantExpr::getFCmp(CmpInst::FCMP_ULT, P1, P5), "fcmp ult float "
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P1STR ", " P5STR);
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std::vector<Constant*> V;
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V.push_back(One);
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// FIXME: getGetElementPtr() actually creates an inbounds ConstantGEP,
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// not a normal one!
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//CHECK(ConstantExpr::getGetElementPtr(Global, V, false),
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// "getelementptr i32** @dummy, i32 1");
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CHECK(ConstantExpr::getInBoundsGetElementPtr(Global, V),
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"getelementptr inbounds i32** @dummy, i32 1");
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CHECK(ConstantExpr::getExtractElement(P6, One), "extractelement <2 x i16> "
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P6STR ", i32 1");
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}
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#undef CHECK
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} // end anonymous namespace
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} // end namespace llvm
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