Revert "[llvm] add GenericFloatingPointPredicateUtils (#140254)" #140968
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This reverts commit d00d74b.
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@llvm/pr-subscribers-llvm-analysis @llvm/pr-subscribers-llvm-adt Author: None (Kewen12) ChangesThis reverts commit d00d74b. The PR breaks our buildbots and blocks downstream merge. Patch is 47.40 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/140968.diff 13 Files Affected:
diff --git a/llvm/include/llvm/ADT/GenericFloatingPointPredicateUtils.h b/llvm/include/llvm/ADT/GenericFloatingPointPredicateUtils.h
deleted file mode 100644
index 49c5fe0aed6e1..0000000000000
--- a/llvm/include/llvm/ADT/GenericFloatingPointPredicateUtils.h
+++ /dev/null
@@ -1,479 +0,0 @@
-//===- llvm/Support/GenericFloatingPointPredicateUtils.h -----*- C++-*-----===//
-//
-// 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
-//
-//===----------------------------------------------------------------------===//
-///
-/// \file
-/// Utilities for dealing with flags related to floating point properties and
-/// mode controls.
-///
-//===----------------------------------------------------------------------===/
-
-#ifndef LLVM_ADT_GENERICFLOATINGPOINTPREDICATEUTILS_H
-#define LLVM_ADT_GENERICFLOATINGPOINTPREDICATEUTILS_H
-
-#include "llvm/ADT/APFloat.h"
-#include "llvm/ADT/FloatingPointMode.h"
-#include "llvm/IR/Instructions.h"
-#include <optional>
-
-namespace llvm {
-
-template <typename ContextT> class GenericFloatingPointPredicateUtils {
- using ValueRefT = typename ContextT::ValueRefT;
- using FunctionT = typename ContextT::FunctionT;
-
- constexpr static ValueRefT Invalid = {};
-
-private:
- static DenormalMode queryDenormalMode(const FunctionT &F, ValueRefT Val);
-
- static bool lookThroughFAbs(const FunctionT &F, ValueRefT LHS,
- ValueRefT &Src);
-
- static std::optional<APFloat> matchConstantFloat(const FunctionT &F,
- ValueRefT Val);
-
- /// Return the return value for fcmpImpliesClass for a compare that produces
- /// an exact class test.
- static std::tuple<ValueRefT, FPClassTest, FPClassTest>
- exactClass(ValueRefT V, FPClassTest M) {
- return {V, M, ~M};
- }
-
-public:
- /// Returns a pair of values, which if passed to llvm.is.fpclass, returns the
- /// same result as an fcmp with the given operands.
- static std::pair<ValueRefT, FPClassTest>
- fcmpToClassTest(FCmpInst::Predicate Pred, const FunctionT &F, ValueRefT LHS,
- ValueRefT RHS, bool LookThroughSrc) {
- std::optional<APFloat> ConstRHS = matchConstantFloat(F, RHS);
- if (!ConstRHS)
- return {Invalid, fcAllFlags};
-
- return fcmpToClassTest(Pred, F, LHS, *ConstRHS, LookThroughSrc);
- }
-
- static std::pair<ValueRefT, FPClassTest>
- fcmpToClassTest(FCmpInst::Predicate Pred, const FunctionT &F, ValueRefT LHS,
- const APFloat &ConstRHS, bool LookThroughSrc) {
-
- auto [Src, ClassIfTrue, ClassIfFalse] =
- fcmpImpliesClass(Pred, F, LHS, ConstRHS, LookThroughSrc);
-
- if (Src && ClassIfTrue == ~ClassIfFalse)
- return {Src, ClassIfTrue};
-
- return {Invalid, fcAllFlags};
- }
-
- /// Compute the possible floating-point classes that \p LHS could be based on
- /// fcmp \Pred \p LHS, \p RHS.
- ///
- /// \returns { TestedValue, ClassesIfTrue, ClassesIfFalse }
- ///
- /// If the compare returns an exact class test, ClassesIfTrue ==
- /// ~ClassesIfFalse
- ///
- /// This is a less exact version of fcmpToClassTest (e.g. fcmpToClassTest will
- /// only succeed for a test of x > 0 implies positive, but not x > 1).
- ///
- /// If \p LookThroughSrc is true, consider the input value when computing the
- /// mask. This may look through sign bit operations.
- ///
- /// If \p LookThroughSrc is false, ignore the source value (i.e. the first
- /// pair element will always be LHS.
- ///
- static std::tuple<ValueRefT, FPClassTest, FPClassTest>
- fcmpImpliesClass(CmpInst::Predicate Pred, const FunctionT &F, ValueRefT LHS,
- FPClassTest RHSClass, bool LookThroughSrc) {
- assert(RHSClass != fcNone);
- ValueRefT Src = LHS;
-
- if (Pred == FCmpInst::FCMP_TRUE)
- return exactClass(Src, fcAllFlags);
-
- if (Pred == FCmpInst::FCMP_FALSE)
- return exactClass(Src, fcNone);
-
- const FPClassTest OrigClass = RHSClass;
-
- const bool IsNegativeRHS = (RHSClass & fcNegative) == RHSClass;
- const bool IsPositiveRHS = (RHSClass & fcPositive) == RHSClass;
- const bool IsNaN = (RHSClass & ~fcNan) == fcNone;
-
- if (IsNaN) {
- // fcmp o__ x, nan -> false
- // fcmp u__ x, nan -> true
- return exactClass(Src, CmpInst::isOrdered(Pred) ? fcNone : fcAllFlags);
- }
-
- // fcmp ord x, zero|normal|subnormal|inf -> ~fcNan
- if (Pred == FCmpInst::FCMP_ORD)
- return exactClass(Src, ~fcNan);
-
- // fcmp uno x, zero|normal|subnormal|inf -> fcNan
- if (Pred == FCmpInst::FCMP_UNO)
- return exactClass(Src, fcNan);
-
- const bool IsFabs = LookThroughSrc && lookThroughFAbs(F, LHS, Src);
- if (IsFabs)
- RHSClass = llvm::inverse_fabs(RHSClass);
-
- const bool IsZero = (OrigClass & fcZero) == OrigClass;
- if (IsZero) {
- assert(Pred != FCmpInst::FCMP_ORD && Pred != FCmpInst::FCMP_UNO);
- // Compares with fcNone are only exactly equal to fcZero if input
- // denormals are not flushed.
- // TODO: Handle DAZ by expanding masks to cover subnormal cases.
- DenormalMode Mode = queryDenormalMode(F, LHS);
- if (Mode.Input != DenormalMode::IEEE)
- return {Invalid, fcAllFlags, fcAllFlags};
-
- switch (Pred) {
- case FCmpInst::FCMP_OEQ: // Match x == 0.0
- return exactClass(Src, fcZero);
- case FCmpInst::FCMP_UEQ: // Match isnan(x) || (x == 0.0)
- return exactClass(Src, fcZero | fcNan);
- case FCmpInst::FCMP_UNE: // Match (x != 0.0)
- return exactClass(Src, ~fcZero);
- case FCmpInst::FCMP_ONE: // Match !isnan(x) && x != 0.0
- return exactClass(Src, ~fcNan & ~fcZero);
- case FCmpInst::FCMP_ORD:
- // Canonical form of ord/uno is with a zero. We could also handle
- // non-canonical other non-NaN constants or LHS == RHS.
- return exactClass(Src, ~fcNan);
- case FCmpInst::FCMP_UNO:
- return exactClass(Src, fcNan);
- case FCmpInst::FCMP_OGT: // x > 0
- return exactClass(Src, fcPosSubnormal | fcPosNormal | fcPosInf);
- case FCmpInst::FCMP_UGT: // isnan(x) || x > 0
- return exactClass(Src, fcPosSubnormal | fcPosNormal | fcPosInf | fcNan);
- case FCmpInst::FCMP_OGE: // x >= 0
- return exactClass(Src, fcPositive | fcNegZero);
- case FCmpInst::FCMP_UGE: // isnan(x) || x >= 0
- return exactClass(Src, fcPositive | fcNegZero | fcNan);
- case FCmpInst::FCMP_OLT: // x < 0
- return exactClass(Src, fcNegSubnormal | fcNegNormal | fcNegInf);
- case FCmpInst::FCMP_ULT: // isnan(x) || x < 0
- return exactClass(Src, fcNegSubnormal | fcNegNormal | fcNegInf | fcNan);
- case FCmpInst::FCMP_OLE: // x <= 0
- return exactClass(Src, fcNegative | fcPosZero);
- case FCmpInst::FCMP_ULE: // isnan(x) || x <= 0
- return exactClass(Src, fcNegative | fcPosZero | fcNan);
- default:
- llvm_unreachable("all compare types are handled");
- }
-
- return {Invalid, fcAllFlags, fcAllFlags};
- }
-
- const bool IsDenormalRHS = (OrigClass & fcSubnormal) == OrigClass;
-
- const bool IsInf = (OrigClass & fcInf) == OrigClass;
- if (IsInf) {
- FPClassTest Mask = fcAllFlags;
-
- switch (Pred) {
- case FCmpInst::FCMP_OEQ:
- case FCmpInst::FCMP_UNE: {
- // Match __builtin_isinf patterns
- //
- // fcmp oeq x, +inf -> is_fpclass x, fcPosInf
- // fcmp oeq fabs(x), +inf -> is_fpclass x, fcInf
- // fcmp oeq x, -inf -> is_fpclass x, fcNegInf
- // fcmp oeq fabs(x), -inf -> is_fpclass x, 0 -> false
- //
- // fcmp une x, +inf -> is_fpclass x, ~fcPosInf
- // fcmp une fabs(x), +inf -> is_fpclass x, ~fcInf
- // fcmp une x, -inf -> is_fpclass x, ~fcNegInf
- // fcmp une fabs(x), -inf -> is_fpclass x, fcAllFlags -> true
- if (IsNegativeRHS) {
- Mask = fcNegInf;
- if (IsFabs)
- Mask = fcNone;
- } else {
- Mask = fcPosInf;
- if (IsFabs)
- Mask |= fcNegInf;
- }
- break;
- }
- case FCmpInst::FCMP_ONE:
- case FCmpInst::FCMP_UEQ: {
- // Match __builtin_isinf patterns
- // fcmp one x, -inf -> is_fpclass x, fcNegInf
- // fcmp one fabs(x), -inf -> is_fpclass x, ~fcNegInf & ~fcNan
- // fcmp one x, +inf -> is_fpclass x, ~fcNegInf & ~fcNan
- // fcmp one fabs(x), +inf -> is_fpclass x, ~fcInf & fcNan
- //
- // fcmp ueq x, +inf -> is_fpclass x, fcPosInf|fcNan
- // fcmp ueq (fabs x), +inf -> is_fpclass x, fcInf|fcNan
- // fcmp ueq x, -inf -> is_fpclass x, fcNegInf|fcNan
- // fcmp ueq fabs(x), -inf -> is_fpclass x, fcNan
- if (IsNegativeRHS) {
- Mask = ~fcNegInf & ~fcNan;
- if (IsFabs)
- Mask = ~fcNan;
- } else {
- Mask = ~fcPosInf & ~fcNan;
- if (IsFabs)
- Mask &= ~fcNegInf;
- }
-
- break;
- }
- case FCmpInst::FCMP_OLT:
- case FCmpInst::FCMP_UGE: {
- if (IsNegativeRHS) {
- // No value is ordered and less than negative infinity.
- // All values are unordered with or at least negative infinity.
- // fcmp olt x, -inf -> false
- // fcmp uge x, -inf -> true
- Mask = fcNone;
- break;
- }
-
- // fcmp olt fabs(x), +inf -> fcFinite
- // fcmp uge fabs(x), +inf -> ~fcFinite
- // fcmp olt x, +inf -> fcFinite|fcNegInf
- // fcmp uge x, +inf -> ~(fcFinite|fcNegInf)
- Mask = fcFinite;
- if (!IsFabs)
- Mask |= fcNegInf;
- break;
- }
- case FCmpInst::FCMP_OGE:
- case FCmpInst::FCMP_ULT: {
- if (IsNegativeRHS) {
- // fcmp oge x, -inf -> ~fcNan
- // fcmp oge fabs(x), -inf -> ~fcNan
- // fcmp ult x, -inf -> fcNan
- // fcmp ult fabs(x), -inf -> fcNan
- Mask = ~fcNan;
- break;
- }
-
- // fcmp oge fabs(x), +inf -> fcInf
- // fcmp oge x, +inf -> fcPosInf
- // fcmp ult fabs(x), +inf -> ~fcInf
- // fcmp ult x, +inf -> ~fcPosInf
- Mask = fcPosInf;
- if (IsFabs)
- Mask |= fcNegInf;
- break;
- }
- case FCmpInst::FCMP_OGT:
- case FCmpInst::FCMP_ULE: {
- if (IsNegativeRHS) {
- // fcmp ogt x, -inf -> fcmp one x, -inf
- // fcmp ogt fabs(x), -inf -> fcmp ord x, x
- // fcmp ule x, -inf -> fcmp ueq x, -inf
- // fcmp ule fabs(x), -inf -> fcmp uno x, x
- Mask = IsFabs ? ~fcNan : ~(fcNegInf | fcNan);
- break;
- }
-
- // No value is ordered and greater than infinity.
- Mask = fcNone;
- break;
- }
- case FCmpInst::FCMP_OLE:
- case FCmpInst::FCMP_UGT: {
- if (IsNegativeRHS) {
- Mask = IsFabs ? fcNone : fcNegInf;
- break;
- }
-
- // fcmp ole x, +inf -> fcmp ord x, x
- // fcmp ole fabs(x), +inf -> fcmp ord x, x
- // fcmp ole x, -inf -> fcmp oeq x, -inf
- // fcmp ole fabs(x), -inf -> false
- Mask = ~fcNan;
- break;
- }
- default:
- llvm_unreachable("all compare types are handled");
- }
-
- // Invert the comparison for the unordered cases.
- if (FCmpInst::isUnordered(Pred))
- Mask = ~Mask;
-
- return exactClass(Src, Mask);
- }
-
- if (Pred == FCmpInst::FCMP_OEQ)
- return {Src, RHSClass, fcAllFlags};
-
- if (Pred == FCmpInst::FCMP_UEQ) {
- FPClassTest Class = RHSClass | fcNan;
- return {Src, Class, ~fcNan};
- }
-
- if (Pred == FCmpInst::FCMP_ONE)
- return {Src, ~fcNan, RHSClass | fcNan};
-
- if (Pred == FCmpInst::FCMP_UNE)
- return {Src, fcAllFlags, RHSClass};
-
- assert((RHSClass == fcNone || RHSClass == fcPosNormal ||
- RHSClass == fcNegNormal || RHSClass == fcNormal ||
- RHSClass == fcPosSubnormal || RHSClass == fcNegSubnormal ||
- RHSClass == fcSubnormal) &&
- "should have been recognized as an exact class test");
-
- if (IsNegativeRHS) {
- // TODO: Handle fneg(fabs)
- if (IsFabs) {
- // fabs(x) o> -k -> fcmp ord x, x
- // fabs(x) u> -k -> true
- // fabs(x) o< -k -> false
- // fabs(x) u< -k -> fcmp uno x, x
- switch (Pred) {
- case FCmpInst::FCMP_OGT:
- case FCmpInst::FCMP_OGE:
- return {Src, ~fcNan, fcNan};
- case FCmpInst::FCMP_UGT:
- case FCmpInst::FCMP_UGE:
- return {Src, fcAllFlags, fcNone};
- case FCmpInst::FCMP_OLT:
- case FCmpInst::FCMP_OLE:
- return {Src, fcNone, fcAllFlags};
- case FCmpInst::FCMP_ULT:
- case FCmpInst::FCMP_ULE:
- return {Src, fcNan, ~fcNan};
- default:
- break;
- }
-
- return {Invalid, fcAllFlags, fcAllFlags};
- }
-
- FPClassTest ClassesLE = fcNegInf | fcNegNormal;
- FPClassTest ClassesGE = fcPositive | fcNegZero | fcNegSubnormal;
-
- if (IsDenormalRHS)
- ClassesLE |= fcNegSubnormal;
- else
- ClassesGE |= fcNegNormal;
-
- switch (Pred) {
- case FCmpInst::FCMP_OGT:
- case FCmpInst::FCMP_OGE:
- return {Src, ClassesGE, ~ClassesGE | RHSClass};
- case FCmpInst::FCMP_UGT:
- case FCmpInst::FCMP_UGE:
- return {Src, ClassesGE | fcNan, ~(ClassesGE | fcNan) | RHSClass};
- case FCmpInst::FCMP_OLT:
- case FCmpInst::FCMP_OLE:
- return {Src, ClassesLE, ~ClassesLE | RHSClass};
- case FCmpInst::FCMP_ULT:
- case FCmpInst::FCMP_ULE:
- return {Src, ClassesLE | fcNan, ~(ClassesLE | fcNan) | RHSClass};
- default:
- break;
- }
- } else if (IsPositiveRHS) {
- FPClassTest ClassesGE = fcPosNormal | fcPosInf;
- FPClassTest ClassesLE = fcNegative | fcPosZero | fcPosSubnormal;
- if (IsDenormalRHS)
- ClassesGE |= fcPosSubnormal;
- else
- ClassesLE |= fcPosNormal;
-
- if (IsFabs) {
- ClassesGE = llvm::inverse_fabs(ClassesGE);
- ClassesLE = llvm::inverse_fabs(ClassesLE);
- }
-
- switch (Pred) {
- case FCmpInst::FCMP_OGT:
- case FCmpInst::FCMP_OGE:
- return {Src, ClassesGE, ~ClassesGE | RHSClass};
- case FCmpInst::FCMP_UGT:
- case FCmpInst::FCMP_UGE:
- return {Src, ClassesGE | fcNan, ~(ClassesGE | fcNan) | RHSClass};
- case FCmpInst::FCMP_OLT:
- case FCmpInst::FCMP_OLE:
- return {Src, ClassesLE, ~ClassesLE | RHSClass};
- case FCmpInst::FCMP_ULT:
- case FCmpInst::FCMP_ULE:
- return {Src, ClassesLE | fcNan, ~(ClassesLE | fcNan) | RHSClass};
- default:
- break;
- }
- }
-
- return {Invalid, fcAllFlags, fcAllFlags};
- }
-
- static std::tuple<ValueRefT, FPClassTest, FPClassTest>
- fcmpImpliesClass(CmpInst::Predicate Pred, const FunctionT &F, ValueRefT LHS,
- const APFloat &ConstRHS, bool LookThroughSrc) {
- // We can refine checks against smallest normal / largest denormal to an
- // exact class test.
- if (!ConstRHS.isNegative() && ConstRHS.isSmallestNormalized()) {
- ValueRefT Src = LHS;
- const bool IsFabs = LookThroughSrc && lookThroughFAbs(F, LHS, Src);
-
- FPClassTest Mask;
- // Match pattern that's used in __builtin_isnormal.
- switch (Pred) {
- case FCmpInst::FCMP_OLT:
- case FCmpInst::FCMP_UGE: {
- // fcmp olt x, smallest_normal ->
- // fcNegInf|fcNegNormal|fcSubnormal|fcZero fcmp olt fabs(x),
- // smallest_normal -> fcSubnormal|fcZero fcmp uge x, smallest_normal ->
- // fcNan|fcPosNormal|fcPosInf fcmp uge fabs(x), smallest_normal ->
- // ~(fcSubnormal|fcZero)
- Mask = fcZero | fcSubnormal;
- if (!IsFabs)
- Mask |= fcNegNormal | fcNegInf;
-
- break;
- }
- case FCmpInst::FCMP_OGE:
- case FCmpInst::FCMP_ULT: {
- // fcmp oge x, smallest_normal -> fcPosNormal | fcPosInf
- // fcmp oge fabs(x), smallest_normal -> fcInf | fcNormal
- // fcmp ult x, smallest_normal -> ~(fcPosNormal | fcPosInf)
- // fcmp ult fabs(x), smallest_normal -> ~(fcInf | fcNormal)
- Mask = fcPosInf | fcPosNormal;
- if (IsFabs)
- Mask |= fcNegInf | fcNegNormal;
- break;
- }
- default:
- return fcmpImpliesClass(Pred, F, LHS, ConstRHS.classify(),
- LookThroughSrc);
- }
-
- // Invert the comparison for the unordered cases.
- if (FCmpInst::isUnordered(Pred))
- Mask = ~Mask;
-
- return exactClass(Src, Mask);
- }
-
- return fcmpImpliesClass(Pred, F, LHS, ConstRHS.classify(), LookThroughSrc);
- }
-
- static std::tuple<ValueRefT, FPClassTest, FPClassTest>
- fcmpImpliesClass(CmpInst::Predicate Pred, const FunctionT &F, ValueRefT LHS,
- ValueRefT RHS, bool LookThroughSrc) {
- std::optional<APFloat> ConstRHS = matchConstantFloat(F, RHS);
- if (!ConstRHS)
- return {Invalid, fcAllFlags, fcAllFlags};
-
- // TODO: Just call computeKnownFPClass for RHS to handle non-constants.
- return fcmpImpliesClass(Pred, F, LHS, *ConstRHS, LookThroughSrc);
- }
-};
-
-} // namespace llvm
-
-#endif // LLVM_ADT_GENERICFLOATINGPOINTPREDICATEUTILS_H
diff --git a/llvm/include/llvm/Analysis/FloatingPointPredicateUtils.h b/llvm/include/llvm/Analysis/FloatingPointPredicateUtils.h
deleted file mode 100644
index 96fdbf48d8b43..0000000000000
--- a/llvm/include/llvm/Analysis/FloatingPointPredicateUtils.h
+++ /dev/null
@@ -1,73 +0,0 @@
-//===- llvm/Analysis/FloatingPointPredicateUtils.h ------------*- C++ -*---===//
-//
-// 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
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_ANALYSIS_FLOATINGPOINTPREDICATEUTILS_H
-#define LLVM_ANALYSIS_FLOATINGPOINTPREDICATEUTILS_H
-
-#include "llvm/ADT/GenericFloatingPointPredicateUtils.h"
-#include "llvm/IR/SSAContext.h"
-
-namespace llvm {
-
-using FloatingPointPredicateUtils =
- GenericFloatingPointPredicateUtils<SSAContext>;
-
-/// Returns a pair of values, which if passed to llvm.is.fpclass, returns the
-/// same result as an fcmp with the given operands.
-///
-/// If \p LookThroughSrc is true, consider the input value when computing the
-/// mask.
-///
-/// If \p LookThroughSrc is false, ignore the source value (i.e. the first pair
-/// element will always be LHS.
-inline std::pair<Value *, FPClassTest>
-fcmpToClassTest(FCmpInst::Predicate Pred, const Function &F, Value *LHS,
- Value *RHS, bool LookThroughSrc = true) {
- return FloatingPointPredicateUtils::fcmpToClassTest(Pred, F, LHS, RHS,
- LookThroughSrc = true);
-}
-
-/// Returns a pair of values, which if passed to llvm.is.fpclass, returns the
-/// same result as an fcmp with the given operands.
-///
-/// If \p LookThroughSrc is true, consider the input value when computing the
-/// mask.
-///
-/// If \p LookThroughSrc is false, ignore the source value (i.e. the first pair
-/// element will always be LHS.
-inline std::pair<Value *, FPClassTest>
-fcmpToClassTest(FCmpInst::Predicate Pred, const Function &F, Value *LHS,
- const APFloat *ConstRHS, bool LookThroughSrc = true) {
- return FloatingPointPredicateUtils::fcmpToClassTest(Pred, F, LHS, *ConstRHS,
- LookThroughSrc);
-}
-
-inline std::tuple<Value *, FPClassTest, FPClassTest>
-fcmpImpliesClass(CmpInst::Predicate Pred, const Function &F, Value *LHS,
- FPClassTest RHSClass, bool LookThroughSrc = true) {
- return FloatingPointPredicateUtils::fcmpImpliesClass(Pred, F, LHS, RHSClass,
- LookThroughSrc);
-}
-
-inline std::tuple<Value *, FPClassTest, FPClassTest>
-fcmpImpliesClass(CmpInst::Predicate Pred, const Function &F, Value *LHS,
- const APFloat &ConstRHS, bool LookThroughSrc = true) {
- return FloatingPointPredicateUtils::fcmpImpliesClass(Pred, F, LHS, Const...
[truncated]
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@llvm/pr-subscribers-llvm-transforms Author: None (Kewen12) ChangesThis reverts commit d00d74b. The PR breaks our buildbots and blocks downstream merge. Patch is 47.40 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/140968.diff 13 Files Affected:
diff --git a/llvm/include/llvm/ADT/GenericFloatingPointPredicateUtils.h b/llvm/include/llvm/ADT/GenericFloatingPointPredicateUtils.h
deleted file mode 100644
index 49c5fe0aed6e1..0000000000000
--- a/llvm/include/llvm/ADT/GenericFloatingPointPredicateUtils.h
+++ /dev/null
@@ -1,479 +0,0 @@
-//===- llvm/Support/GenericFloatingPointPredicateUtils.h -----*- C++-*-----===//
-//
-// 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
-//
-//===----------------------------------------------------------------------===//
-///
-/// \file
-/// Utilities for dealing with flags related to floating point properties and
-/// mode controls.
-///
-//===----------------------------------------------------------------------===/
-
-#ifndef LLVM_ADT_GENERICFLOATINGPOINTPREDICATEUTILS_H
-#define LLVM_ADT_GENERICFLOATINGPOINTPREDICATEUTILS_H
-
-#include "llvm/ADT/APFloat.h"
-#include "llvm/ADT/FloatingPointMode.h"
-#include "llvm/IR/Instructions.h"
-#include <optional>
-
-namespace llvm {
-
-template <typename ContextT> class GenericFloatingPointPredicateUtils {
- using ValueRefT = typename ContextT::ValueRefT;
- using FunctionT = typename ContextT::FunctionT;
-
- constexpr static ValueRefT Invalid = {};
-
-private:
- static DenormalMode queryDenormalMode(const FunctionT &F, ValueRefT Val);
-
- static bool lookThroughFAbs(const FunctionT &F, ValueRefT LHS,
- ValueRefT &Src);
-
- static std::optional<APFloat> matchConstantFloat(const FunctionT &F,
- ValueRefT Val);
-
- /// Return the return value for fcmpImpliesClass for a compare that produces
- /// an exact class test.
- static std::tuple<ValueRefT, FPClassTest, FPClassTest>
- exactClass(ValueRefT V, FPClassTest M) {
- return {V, M, ~M};
- }
-
-public:
- /// Returns a pair of values, which if passed to llvm.is.fpclass, returns the
- /// same result as an fcmp with the given operands.
- static std::pair<ValueRefT, FPClassTest>
- fcmpToClassTest(FCmpInst::Predicate Pred, const FunctionT &F, ValueRefT LHS,
- ValueRefT RHS, bool LookThroughSrc) {
- std::optional<APFloat> ConstRHS = matchConstantFloat(F, RHS);
- if (!ConstRHS)
- return {Invalid, fcAllFlags};
-
- return fcmpToClassTest(Pred, F, LHS, *ConstRHS, LookThroughSrc);
- }
-
- static std::pair<ValueRefT, FPClassTest>
- fcmpToClassTest(FCmpInst::Predicate Pred, const FunctionT &F, ValueRefT LHS,
- const APFloat &ConstRHS, bool LookThroughSrc) {
-
- auto [Src, ClassIfTrue, ClassIfFalse] =
- fcmpImpliesClass(Pred, F, LHS, ConstRHS, LookThroughSrc);
-
- if (Src && ClassIfTrue == ~ClassIfFalse)
- return {Src, ClassIfTrue};
-
- return {Invalid, fcAllFlags};
- }
-
- /// Compute the possible floating-point classes that \p LHS could be based on
- /// fcmp \Pred \p LHS, \p RHS.
- ///
- /// \returns { TestedValue, ClassesIfTrue, ClassesIfFalse }
- ///
- /// If the compare returns an exact class test, ClassesIfTrue ==
- /// ~ClassesIfFalse
- ///
- /// This is a less exact version of fcmpToClassTest (e.g. fcmpToClassTest will
- /// only succeed for a test of x > 0 implies positive, but not x > 1).
- ///
- /// If \p LookThroughSrc is true, consider the input value when computing the
- /// mask. This may look through sign bit operations.
- ///
- /// If \p LookThroughSrc is false, ignore the source value (i.e. the first
- /// pair element will always be LHS.
- ///
- static std::tuple<ValueRefT, FPClassTest, FPClassTest>
- fcmpImpliesClass(CmpInst::Predicate Pred, const FunctionT &F, ValueRefT LHS,
- FPClassTest RHSClass, bool LookThroughSrc) {
- assert(RHSClass != fcNone);
- ValueRefT Src = LHS;
-
- if (Pred == FCmpInst::FCMP_TRUE)
- return exactClass(Src, fcAllFlags);
-
- if (Pred == FCmpInst::FCMP_FALSE)
- return exactClass(Src, fcNone);
-
- const FPClassTest OrigClass = RHSClass;
-
- const bool IsNegativeRHS = (RHSClass & fcNegative) == RHSClass;
- const bool IsPositiveRHS = (RHSClass & fcPositive) == RHSClass;
- const bool IsNaN = (RHSClass & ~fcNan) == fcNone;
-
- if (IsNaN) {
- // fcmp o__ x, nan -> false
- // fcmp u__ x, nan -> true
- return exactClass(Src, CmpInst::isOrdered(Pred) ? fcNone : fcAllFlags);
- }
-
- // fcmp ord x, zero|normal|subnormal|inf -> ~fcNan
- if (Pred == FCmpInst::FCMP_ORD)
- return exactClass(Src, ~fcNan);
-
- // fcmp uno x, zero|normal|subnormal|inf -> fcNan
- if (Pred == FCmpInst::FCMP_UNO)
- return exactClass(Src, fcNan);
-
- const bool IsFabs = LookThroughSrc && lookThroughFAbs(F, LHS, Src);
- if (IsFabs)
- RHSClass = llvm::inverse_fabs(RHSClass);
-
- const bool IsZero = (OrigClass & fcZero) == OrigClass;
- if (IsZero) {
- assert(Pred != FCmpInst::FCMP_ORD && Pred != FCmpInst::FCMP_UNO);
- // Compares with fcNone are only exactly equal to fcZero if input
- // denormals are not flushed.
- // TODO: Handle DAZ by expanding masks to cover subnormal cases.
- DenormalMode Mode = queryDenormalMode(F, LHS);
- if (Mode.Input != DenormalMode::IEEE)
- return {Invalid, fcAllFlags, fcAllFlags};
-
- switch (Pred) {
- case FCmpInst::FCMP_OEQ: // Match x == 0.0
- return exactClass(Src, fcZero);
- case FCmpInst::FCMP_UEQ: // Match isnan(x) || (x == 0.0)
- return exactClass(Src, fcZero | fcNan);
- case FCmpInst::FCMP_UNE: // Match (x != 0.0)
- return exactClass(Src, ~fcZero);
- case FCmpInst::FCMP_ONE: // Match !isnan(x) && x != 0.0
- return exactClass(Src, ~fcNan & ~fcZero);
- case FCmpInst::FCMP_ORD:
- // Canonical form of ord/uno is with a zero. We could also handle
- // non-canonical other non-NaN constants or LHS == RHS.
- return exactClass(Src, ~fcNan);
- case FCmpInst::FCMP_UNO:
- return exactClass(Src, fcNan);
- case FCmpInst::FCMP_OGT: // x > 0
- return exactClass(Src, fcPosSubnormal | fcPosNormal | fcPosInf);
- case FCmpInst::FCMP_UGT: // isnan(x) || x > 0
- return exactClass(Src, fcPosSubnormal | fcPosNormal | fcPosInf | fcNan);
- case FCmpInst::FCMP_OGE: // x >= 0
- return exactClass(Src, fcPositive | fcNegZero);
- case FCmpInst::FCMP_UGE: // isnan(x) || x >= 0
- return exactClass(Src, fcPositive | fcNegZero | fcNan);
- case FCmpInst::FCMP_OLT: // x < 0
- return exactClass(Src, fcNegSubnormal | fcNegNormal | fcNegInf);
- case FCmpInst::FCMP_ULT: // isnan(x) || x < 0
- return exactClass(Src, fcNegSubnormal | fcNegNormal | fcNegInf | fcNan);
- case FCmpInst::FCMP_OLE: // x <= 0
- return exactClass(Src, fcNegative | fcPosZero);
- case FCmpInst::FCMP_ULE: // isnan(x) || x <= 0
- return exactClass(Src, fcNegative | fcPosZero | fcNan);
- default:
- llvm_unreachable("all compare types are handled");
- }
-
- return {Invalid, fcAllFlags, fcAllFlags};
- }
-
- const bool IsDenormalRHS = (OrigClass & fcSubnormal) == OrigClass;
-
- const bool IsInf = (OrigClass & fcInf) == OrigClass;
- if (IsInf) {
- FPClassTest Mask = fcAllFlags;
-
- switch (Pred) {
- case FCmpInst::FCMP_OEQ:
- case FCmpInst::FCMP_UNE: {
- // Match __builtin_isinf patterns
- //
- // fcmp oeq x, +inf -> is_fpclass x, fcPosInf
- // fcmp oeq fabs(x), +inf -> is_fpclass x, fcInf
- // fcmp oeq x, -inf -> is_fpclass x, fcNegInf
- // fcmp oeq fabs(x), -inf -> is_fpclass x, 0 -> false
- //
- // fcmp une x, +inf -> is_fpclass x, ~fcPosInf
- // fcmp une fabs(x), +inf -> is_fpclass x, ~fcInf
- // fcmp une x, -inf -> is_fpclass x, ~fcNegInf
- // fcmp une fabs(x), -inf -> is_fpclass x, fcAllFlags -> true
- if (IsNegativeRHS) {
- Mask = fcNegInf;
- if (IsFabs)
- Mask = fcNone;
- } else {
- Mask = fcPosInf;
- if (IsFabs)
- Mask |= fcNegInf;
- }
- break;
- }
- case FCmpInst::FCMP_ONE:
- case FCmpInst::FCMP_UEQ: {
- // Match __builtin_isinf patterns
- // fcmp one x, -inf -> is_fpclass x, fcNegInf
- // fcmp one fabs(x), -inf -> is_fpclass x, ~fcNegInf & ~fcNan
- // fcmp one x, +inf -> is_fpclass x, ~fcNegInf & ~fcNan
- // fcmp one fabs(x), +inf -> is_fpclass x, ~fcInf & fcNan
- //
- // fcmp ueq x, +inf -> is_fpclass x, fcPosInf|fcNan
- // fcmp ueq (fabs x), +inf -> is_fpclass x, fcInf|fcNan
- // fcmp ueq x, -inf -> is_fpclass x, fcNegInf|fcNan
- // fcmp ueq fabs(x), -inf -> is_fpclass x, fcNan
- if (IsNegativeRHS) {
- Mask = ~fcNegInf & ~fcNan;
- if (IsFabs)
- Mask = ~fcNan;
- } else {
- Mask = ~fcPosInf & ~fcNan;
- if (IsFabs)
- Mask &= ~fcNegInf;
- }
-
- break;
- }
- case FCmpInst::FCMP_OLT:
- case FCmpInst::FCMP_UGE: {
- if (IsNegativeRHS) {
- // No value is ordered and less than negative infinity.
- // All values are unordered with or at least negative infinity.
- // fcmp olt x, -inf -> false
- // fcmp uge x, -inf -> true
- Mask = fcNone;
- break;
- }
-
- // fcmp olt fabs(x), +inf -> fcFinite
- // fcmp uge fabs(x), +inf -> ~fcFinite
- // fcmp olt x, +inf -> fcFinite|fcNegInf
- // fcmp uge x, +inf -> ~(fcFinite|fcNegInf)
- Mask = fcFinite;
- if (!IsFabs)
- Mask |= fcNegInf;
- break;
- }
- case FCmpInst::FCMP_OGE:
- case FCmpInst::FCMP_ULT: {
- if (IsNegativeRHS) {
- // fcmp oge x, -inf -> ~fcNan
- // fcmp oge fabs(x), -inf -> ~fcNan
- // fcmp ult x, -inf -> fcNan
- // fcmp ult fabs(x), -inf -> fcNan
- Mask = ~fcNan;
- break;
- }
-
- // fcmp oge fabs(x), +inf -> fcInf
- // fcmp oge x, +inf -> fcPosInf
- // fcmp ult fabs(x), +inf -> ~fcInf
- // fcmp ult x, +inf -> ~fcPosInf
- Mask = fcPosInf;
- if (IsFabs)
- Mask |= fcNegInf;
- break;
- }
- case FCmpInst::FCMP_OGT:
- case FCmpInst::FCMP_ULE: {
- if (IsNegativeRHS) {
- // fcmp ogt x, -inf -> fcmp one x, -inf
- // fcmp ogt fabs(x), -inf -> fcmp ord x, x
- // fcmp ule x, -inf -> fcmp ueq x, -inf
- // fcmp ule fabs(x), -inf -> fcmp uno x, x
- Mask = IsFabs ? ~fcNan : ~(fcNegInf | fcNan);
- break;
- }
-
- // No value is ordered and greater than infinity.
- Mask = fcNone;
- break;
- }
- case FCmpInst::FCMP_OLE:
- case FCmpInst::FCMP_UGT: {
- if (IsNegativeRHS) {
- Mask = IsFabs ? fcNone : fcNegInf;
- break;
- }
-
- // fcmp ole x, +inf -> fcmp ord x, x
- // fcmp ole fabs(x), +inf -> fcmp ord x, x
- // fcmp ole x, -inf -> fcmp oeq x, -inf
- // fcmp ole fabs(x), -inf -> false
- Mask = ~fcNan;
- break;
- }
- default:
- llvm_unreachable("all compare types are handled");
- }
-
- // Invert the comparison for the unordered cases.
- if (FCmpInst::isUnordered(Pred))
- Mask = ~Mask;
-
- return exactClass(Src, Mask);
- }
-
- if (Pred == FCmpInst::FCMP_OEQ)
- return {Src, RHSClass, fcAllFlags};
-
- if (Pred == FCmpInst::FCMP_UEQ) {
- FPClassTest Class = RHSClass | fcNan;
- return {Src, Class, ~fcNan};
- }
-
- if (Pred == FCmpInst::FCMP_ONE)
- return {Src, ~fcNan, RHSClass | fcNan};
-
- if (Pred == FCmpInst::FCMP_UNE)
- return {Src, fcAllFlags, RHSClass};
-
- assert((RHSClass == fcNone || RHSClass == fcPosNormal ||
- RHSClass == fcNegNormal || RHSClass == fcNormal ||
- RHSClass == fcPosSubnormal || RHSClass == fcNegSubnormal ||
- RHSClass == fcSubnormal) &&
- "should have been recognized as an exact class test");
-
- if (IsNegativeRHS) {
- // TODO: Handle fneg(fabs)
- if (IsFabs) {
- // fabs(x) o> -k -> fcmp ord x, x
- // fabs(x) u> -k -> true
- // fabs(x) o< -k -> false
- // fabs(x) u< -k -> fcmp uno x, x
- switch (Pred) {
- case FCmpInst::FCMP_OGT:
- case FCmpInst::FCMP_OGE:
- return {Src, ~fcNan, fcNan};
- case FCmpInst::FCMP_UGT:
- case FCmpInst::FCMP_UGE:
- return {Src, fcAllFlags, fcNone};
- case FCmpInst::FCMP_OLT:
- case FCmpInst::FCMP_OLE:
- return {Src, fcNone, fcAllFlags};
- case FCmpInst::FCMP_ULT:
- case FCmpInst::FCMP_ULE:
- return {Src, fcNan, ~fcNan};
- default:
- break;
- }
-
- return {Invalid, fcAllFlags, fcAllFlags};
- }
-
- FPClassTest ClassesLE = fcNegInf | fcNegNormal;
- FPClassTest ClassesGE = fcPositive | fcNegZero | fcNegSubnormal;
-
- if (IsDenormalRHS)
- ClassesLE |= fcNegSubnormal;
- else
- ClassesGE |= fcNegNormal;
-
- switch (Pred) {
- case FCmpInst::FCMP_OGT:
- case FCmpInst::FCMP_OGE:
- return {Src, ClassesGE, ~ClassesGE | RHSClass};
- case FCmpInst::FCMP_UGT:
- case FCmpInst::FCMP_UGE:
- return {Src, ClassesGE | fcNan, ~(ClassesGE | fcNan) | RHSClass};
- case FCmpInst::FCMP_OLT:
- case FCmpInst::FCMP_OLE:
- return {Src, ClassesLE, ~ClassesLE | RHSClass};
- case FCmpInst::FCMP_ULT:
- case FCmpInst::FCMP_ULE:
- return {Src, ClassesLE | fcNan, ~(ClassesLE | fcNan) | RHSClass};
- default:
- break;
- }
- } else if (IsPositiveRHS) {
- FPClassTest ClassesGE = fcPosNormal | fcPosInf;
- FPClassTest ClassesLE = fcNegative | fcPosZero | fcPosSubnormal;
- if (IsDenormalRHS)
- ClassesGE |= fcPosSubnormal;
- else
- ClassesLE |= fcPosNormal;
-
- if (IsFabs) {
- ClassesGE = llvm::inverse_fabs(ClassesGE);
- ClassesLE = llvm::inverse_fabs(ClassesLE);
- }
-
- switch (Pred) {
- case FCmpInst::FCMP_OGT:
- case FCmpInst::FCMP_OGE:
- return {Src, ClassesGE, ~ClassesGE | RHSClass};
- case FCmpInst::FCMP_UGT:
- case FCmpInst::FCMP_UGE:
- return {Src, ClassesGE | fcNan, ~(ClassesGE | fcNan) | RHSClass};
- case FCmpInst::FCMP_OLT:
- case FCmpInst::FCMP_OLE:
- return {Src, ClassesLE, ~ClassesLE | RHSClass};
- case FCmpInst::FCMP_ULT:
- case FCmpInst::FCMP_ULE:
- return {Src, ClassesLE | fcNan, ~(ClassesLE | fcNan) | RHSClass};
- default:
- break;
- }
- }
-
- return {Invalid, fcAllFlags, fcAllFlags};
- }
-
- static std::tuple<ValueRefT, FPClassTest, FPClassTest>
- fcmpImpliesClass(CmpInst::Predicate Pred, const FunctionT &F, ValueRefT LHS,
- const APFloat &ConstRHS, bool LookThroughSrc) {
- // We can refine checks against smallest normal / largest denormal to an
- // exact class test.
- if (!ConstRHS.isNegative() && ConstRHS.isSmallestNormalized()) {
- ValueRefT Src = LHS;
- const bool IsFabs = LookThroughSrc && lookThroughFAbs(F, LHS, Src);
-
- FPClassTest Mask;
- // Match pattern that's used in __builtin_isnormal.
- switch (Pred) {
- case FCmpInst::FCMP_OLT:
- case FCmpInst::FCMP_UGE: {
- // fcmp olt x, smallest_normal ->
- // fcNegInf|fcNegNormal|fcSubnormal|fcZero fcmp olt fabs(x),
- // smallest_normal -> fcSubnormal|fcZero fcmp uge x, smallest_normal ->
- // fcNan|fcPosNormal|fcPosInf fcmp uge fabs(x), smallest_normal ->
- // ~(fcSubnormal|fcZero)
- Mask = fcZero | fcSubnormal;
- if (!IsFabs)
- Mask |= fcNegNormal | fcNegInf;
-
- break;
- }
- case FCmpInst::FCMP_OGE:
- case FCmpInst::FCMP_ULT: {
- // fcmp oge x, smallest_normal -> fcPosNormal | fcPosInf
- // fcmp oge fabs(x), smallest_normal -> fcInf | fcNormal
- // fcmp ult x, smallest_normal -> ~(fcPosNormal | fcPosInf)
- // fcmp ult fabs(x), smallest_normal -> ~(fcInf | fcNormal)
- Mask = fcPosInf | fcPosNormal;
- if (IsFabs)
- Mask |= fcNegInf | fcNegNormal;
- break;
- }
- default:
- return fcmpImpliesClass(Pred, F, LHS, ConstRHS.classify(),
- LookThroughSrc);
- }
-
- // Invert the comparison for the unordered cases.
- if (FCmpInst::isUnordered(Pred))
- Mask = ~Mask;
-
- return exactClass(Src, Mask);
- }
-
- return fcmpImpliesClass(Pred, F, LHS, ConstRHS.classify(), LookThroughSrc);
- }
-
- static std::tuple<ValueRefT, FPClassTest, FPClassTest>
- fcmpImpliesClass(CmpInst::Predicate Pred, const FunctionT &F, ValueRefT LHS,
- ValueRefT RHS, bool LookThroughSrc) {
- std::optional<APFloat> ConstRHS = matchConstantFloat(F, RHS);
- if (!ConstRHS)
- return {Invalid, fcAllFlags, fcAllFlags};
-
- // TODO: Just call computeKnownFPClass for RHS to handle non-constants.
- return fcmpImpliesClass(Pred, F, LHS, *ConstRHS, LookThroughSrc);
- }
-};
-
-} // namespace llvm
-
-#endif // LLVM_ADT_GENERICFLOATINGPOINTPREDICATEUTILS_H
diff --git a/llvm/include/llvm/Analysis/FloatingPointPredicateUtils.h b/llvm/include/llvm/Analysis/FloatingPointPredicateUtils.h
deleted file mode 100644
index 96fdbf48d8b43..0000000000000
--- a/llvm/include/llvm/Analysis/FloatingPointPredicateUtils.h
+++ /dev/null
@@ -1,73 +0,0 @@
-//===- llvm/Analysis/FloatingPointPredicateUtils.h ------------*- C++ -*---===//
-//
-// 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
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_ANALYSIS_FLOATINGPOINTPREDICATEUTILS_H
-#define LLVM_ANALYSIS_FLOATINGPOINTPREDICATEUTILS_H
-
-#include "llvm/ADT/GenericFloatingPointPredicateUtils.h"
-#include "llvm/IR/SSAContext.h"
-
-namespace llvm {
-
-using FloatingPointPredicateUtils =
- GenericFloatingPointPredicateUtils<SSAContext>;
-
-/// Returns a pair of values, which if passed to llvm.is.fpclass, returns the
-/// same result as an fcmp with the given operands.
-///
-/// If \p LookThroughSrc is true, consider the input value when computing the
-/// mask.
-///
-/// If \p LookThroughSrc is false, ignore the source value (i.e. the first pair
-/// element will always be LHS.
-inline std::pair<Value *, FPClassTest>
-fcmpToClassTest(FCmpInst::Predicate Pred, const Function &F, Value *LHS,
- Value *RHS, bool LookThroughSrc = true) {
- return FloatingPointPredicateUtils::fcmpToClassTest(Pred, F, LHS, RHS,
- LookThroughSrc = true);
-}
-
-/// Returns a pair of values, which if passed to llvm.is.fpclass, returns the
-/// same result as an fcmp with the given operands.
-///
-/// If \p LookThroughSrc is true, consider the input value when computing the
-/// mask.
-///
-/// If \p LookThroughSrc is false, ignore the source value (i.e. the first pair
-/// element will always be LHS.
-inline std::pair<Value *, FPClassTest>
-fcmpToClassTest(FCmpInst::Predicate Pred, const Function &F, Value *LHS,
- const APFloat *ConstRHS, bool LookThroughSrc = true) {
- return FloatingPointPredicateUtils::fcmpToClassTest(Pred, F, LHS, *ConstRHS,
- LookThroughSrc);
-}
-
-inline std::tuple<Value *, FPClassTest, FPClassTest>
-fcmpImpliesClass(CmpInst::Predicate Pred, const Function &F, Value *LHS,
- FPClassTest RHSClass, bool LookThroughSrc = true) {
- return FloatingPointPredicateUtils::fcmpImpliesClass(Pred, F, LHS, RHSClass,
- LookThroughSrc);
-}
-
-inline std::tuple<Value *, FPClassTest, FPClassTest>
-fcmpImpliesClass(CmpInst::Predicate Pred, const Function &F, Value *LHS,
- const APFloat &ConstRHS, bool LookThroughSrc = true) {
- return FloatingPointPredicateUtils::fcmpImpliesClass(Pred, F, LHS, Const...
[truncated]
|
ronlieb
approved these changes
May 21, 2025
|
@Kewen12 Congratulations on having your first Pull Request (PR) merged into the LLVM Project! Your changes will be combined with recent changes from other authors, then tested by our build bots. If there is a problem with a build, you may receive a report in an email or a comment on this PR. Please check whether problems have been caused by your change specifically, as the builds can include changes from many authors. It is not uncommon for your change to be included in a build that fails due to someone else's changes, or infrastructure issues. How to do this, and the rest of the post-merge process, is covered in detail here. If your change does cause a problem, it may be reverted, or you can revert it yourself. This is a normal part of LLVM development. You can fix your changes and open a new PR to merge them again. If you don't get any reports, no action is required from you. Your changes are working as expected, well done! |
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LLVM Buildbot has detected a new failure on builder Full details are available at: https://lab.llvm.org/buildbot/#/builders/174/builds/18145 Here is the relevant piece of the build log for the reference |
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LLVM Buildbot has detected a new failure on builder Full details are available at: https://lab.llvm.org/buildbot/#/builders/208/builds/1357 Here is the relevant piece of the build log for the reference |
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LLVM Buildbot has detected a new failure on builder Full details are available at: https://lab.llvm.org/buildbot/#/builders/143/builds/7873 Here is the relevant piece of the build log for the reference |
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LLVM Buildbot has detected a new failure on builder Full details are available at: https://lab.llvm.org/buildbot/#/builders/35/builds/10284 Here is the relevant piece of the build log for the reference |
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LLVM Buildbot has detected a new failure on builder Full details are available at: https://lab.llvm.org/buildbot/#/builders/169/builds/11645 Here is the relevant piece of the build log for the reference |
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This reverts commit d00d74b.
The PR breaks our buildbots and blocks downstream merge.