forked from OSchip/llvm-project
c7ff5b38f2
Now compiler defines 5 sets of constants to represent rounding mode. These are: 1. `llvm::APFloatBase::roundingMode`. It specifies all 5 rounding modes defined by IEEE-754 and is used in `APFloat` implementation. 2. `clang::LangOptions::FPRoundingModeKind`. It specifies 4 of 5 IEEE-754 rounding modes and a special value for dynamic rounding mode. It is used in clang frontend. 3. `llvm::fp::RoundingMode`. Defines the same values as `clang::LangOptions::FPRoundingModeKind` but in different order. It is used to specify rounding mode in in IR and functions that operate IR. 4. Rounding mode representation used by `FLT_ROUNDS` (C11, 5.2.4.2.2p7). Besides constants for rounding mode it also uses a special value to indicate error. It is convenient to use in intrinsic functions, as it represents platform-independent representation for rounding mode. In this role it is used in some pending patches. 5. Values like `FE_DOWNWARD` and other, which specify rounding mode in library calls `fesetround` and `fegetround`. Often they represent bits of some control register, so they are target-dependent. The same names (not values) and a special name `FE_DYNAMIC` are used in `#pragma STDC FENV_ROUND`. The first 4 sets of constants are target independent and could have the same numerical representation. It would simplify conversion between the representations. Also now `clang::LangOptions::FPRoundingModeKind` and `llvm::fp::RoundingMode` do not contain the value for IEEE-754 rounding direction `roundTiesToAway`, although it is supported natively on some targets. This change defines all the rounding mode type via one `llvm::RoundingMode`, which also contains rounding mode for IEEE rounding direction `roundTiesToAway`. Differential Revision: https://reviews.llvm.org/D77379 |
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| .. | ||
| AsmWriterTest.cpp | ||
| AttributesTest.cpp | ||
| BasicBlockTest.cpp | ||
| CFGBuilder.cpp | ||
| CFGBuilder.h | ||
| CMakeLists.txt | ||
| ConstantRangeTest.cpp | ||
| ConstantsTest.cpp | ||
| DataLayoutTest.cpp | ||
| DebugInfoTest.cpp | ||
| DebugTypeODRUniquingTest.cpp | ||
| DominatorTreeBatchUpdatesTest.cpp | ||
| DominatorTreeTest.cpp | ||
| FunctionTest.cpp | ||
| IRBuilderTest.cpp | ||
| InstructionsTest.cpp | ||
| IntrinsicsTest.cpp | ||
| LegacyPassManagerTest.cpp | ||
| MDBuilderTest.cpp | ||
| ManglerTest.cpp | ||
| MetadataTest.cpp | ||
| ModuleTest.cpp | ||
| PassBuilderCallbacksTest.cpp | ||
| PassManagerTest.cpp | ||
| PatternMatch.cpp | ||
| TimePassesTest.cpp | ||
| TypesTest.cpp | ||
| UseTest.cpp | ||
| UserTest.cpp | ||
| VPIntrinsicTest.cpp | ||
| ValueHandleTest.cpp | ||
| ValueMapTest.cpp | ||
| ValueTest.cpp | ||
| VectorTypesTest.cpp | ||
| VerifierTest.cpp | ||
| WaymarkTest.cpp | ||