https://github.com/arsenm updated
https://github.com/llvm/llvm-project/pull/74056
>From 9be777d5b39852cf3c0b2538fd5f712922672caa Mon Sep 17 00:00:00 2001
From: Matt Arsenault <matthew.arsena...@amd.com>
Date: Fri, 1 Dec 2023 18:00:13 +0900
Subject: [PATCH 1/4] Reapply "InstCombine: Introduce
SimplifyDemandedUseFPClass""
This reverts commit ef388334ee5a3584255b9ef5b3fefdb244fa3fd7.
The referenced issue violates the spec for finite-only math only by
using a return value for a constant infinity.
---
clang/test/Headers/__clang_hip_math.hip | 56 +++--
llvm/include/llvm/Analysis/ValueTracking.h | 4 +
.../InstCombine/InstCombineInternal.h | 9 +
.../InstCombineSimplifyDemanded.cpp | 140 +++++++++++-
.../InstCombine/InstructionCombining.cpp | 18 +-
.../InstCombine/simplify-demanded-fpclass.ll | 203 +++++++-----------
6 files changed, 286 insertions(+), 144 deletions(-)
diff --git a/clang/test/Headers/__clang_hip_math.hip
b/clang/test/Headers/__clang_hip_math.hip
index c0f4a06acbb8e3..9e15aec94dc28a 100644
--- a/clang/test/Headers/__clang_hip_math.hip
+++ b/clang/test/Headers/__clang_hip_math.hip
@@ -2557,33 +2557,65 @@ extern "C" __device__ double test_nan(const char *tag) {
return nan(tag);
}
-// CHECK-LABEL: @test_nanf_emptystr(
-// CHECK-NEXT: entry:
-// CHECK-NEXT: ret float 0x7FF8000000000000
+// DEFAULT-LABEL: @test_nanf_emptystr(
+// DEFAULT-NEXT: entry:
+// DEFAULT-NEXT: ret float 0x7FF8000000000000
+//
+// FINITEONLY-LABEL: @test_nanf_emptystr(
+// FINITEONLY-NEXT: entry:
+// FINITEONLY-NEXT: ret float poison
+//
+// APPROX-LABEL: @test_nanf_emptystr(
+// APPROX-NEXT: entry:
+// APPROX-NEXT: ret float 0x7FF8000000000000
//
extern "C" __device__ float test_nanf_emptystr() {
return nanf("");
}
-// CHECK-LABEL: @test_nan_emptystr(
-// CHECK-NEXT: entry:
-// CHECK-NEXT: ret double 0x7FF8000000000000
+// DEFAULT-LABEL: @test_nan_emptystr(
+// DEFAULT-NEXT: entry:
+// DEFAULT-NEXT: ret double 0x7FF8000000000000
+//
+// FINITEONLY-LABEL: @test_nan_emptystr(
+// FINITEONLY-NEXT: entry:
+// FINITEONLY-NEXT: ret double poison
+//
+// APPROX-LABEL: @test_nan_emptystr(
+// APPROX-NEXT: entry:
+// APPROX-NEXT: ret double 0x7FF8000000000000
//
extern "C" __device__ double test_nan_emptystr() {
return nan("");
}
-// CHECK-LABEL: @test_nanf_fill(
-// CHECK-NEXT: entry:
-// CHECK-NEXT: ret float 0x7FF8000000000000
+// DEFAULT-LABEL: @test_nanf_fill(
+// DEFAULT-NEXT: entry:
+// DEFAULT-NEXT: ret float 0x7FF8000000000000
+//
+// FINITEONLY-LABEL: @test_nanf_fill(
+// FINITEONLY-NEXT: entry:
+// FINITEONLY-NEXT: ret float poison
+//
+// APPROX-LABEL: @test_nanf_fill(
+// APPROX-NEXT: entry:
+// APPROX-NEXT: ret float 0x7FF8000000000000
//
extern "C" __device__ float test_nanf_fill() {
return nanf("0x456");
}
-// CHECK-LABEL: @test_nan_fill(
-// CHECK-NEXT: entry:
-// CHECK-NEXT: ret double 0x7FF8000000000000
+// DEFAULT-LABEL: @test_nan_fill(
+// DEFAULT-NEXT: entry:
+// DEFAULT-NEXT: ret double 0x7FF8000000000000
+//
+// FINITEONLY-LABEL: @test_nan_fill(
+// FINITEONLY-NEXT: entry:
+// FINITEONLY-NEXT: ret double poison
+//
+// APPROX-LABEL: @test_nan_fill(
+// APPROX-NEXT: entry:
+// APPROX-NEXT: ret double 0x7FF8000000000000
//
extern "C" __device__ double test_nan_fill() {
return nan("0x123");
diff --git a/llvm/include/llvm/Analysis/ValueTracking.h
b/llvm/include/llvm/Analysis/ValueTracking.h
index 82c87edd6297cd..f9ce679bc74268 100644
--- a/llvm/include/llvm/Analysis/ValueTracking.h
+++ b/llvm/include/llvm/Analysis/ValueTracking.h
@@ -243,6 +243,10 @@ struct KnownFPClass {
/// definitely set or false if the sign bit is definitely unset.
std::optional<bool> SignBit;
+ bool operator==(KnownFPClass Other) const {
+ return KnownFPClasses == Other.KnownFPClasses && SignBit == Other.SignBit;
+ }
+
/// Return true if it's known this can never be one of the mask entries.
bool isKnownNever(FPClassTest Mask) const {
return (KnownFPClasses & Mask) == fcNone;
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineInternal.h
b/llvm/lib/Transforms/InstCombine/InstCombineInternal.h
index 0bbb22be71569f..9a66fb8f456f95 100644
--- a/llvm/lib/Transforms/InstCombine/InstCombineInternal.h
+++ b/llvm/lib/Transforms/InstCombine/InstCombineInternal.h
@@ -551,6 +551,15 @@ class LLVM_LIBRARY_VISIBILITY InstCombinerImpl final
APInt &UndefElts, unsigned Depth = 0,
bool AllowMultipleUsers = false) override;
+ /// Attempts to replace V with a simpler value based on the demanded
+ /// floating-point classes
+ Value *SimplifyDemandedUseFPClass(Value *V, FPClassTest DemandedMask,
+ KnownFPClass &Known, unsigned Depth,
+ Instruction *CxtI);
+ bool SimplifyDemandedFPClass(Instruction *I, unsigned Op,
+ FPClassTest DemandedMask, KnownFPClass &Known,
+ unsigned Depth = 0);
+
/// Canonicalize the position of binops relative to shufflevector.
Instruction *foldVectorBinop(BinaryOperator &Inst);
Instruction *foldVectorSelect(SelectInst &Sel);
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp
b/llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp
index 4d19bd12d8f6f4..418155e90a2a7e 100644
--- a/llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp
@@ -466,7 +466,8 @@ Value *InstCombinerImpl::SimplifyDemandedUseBits(Value *V,
APInt DemandedMask,
if (InputKnown.isNonNegative() ||
DemandedMask.getActiveBits() <= SrcBitWidth) {
// Convert to ZExt cast.
- CastInst *NewCast = new ZExtInst(I->getOperand(0), VTy, I->getName());
+ CastInst *NewCast = new ZExtInst(I->getOperand(0), VTy);
+ NewCast->takeName(I);
return InsertNewInstWith(NewCast, I->getIterator());
}
@@ -774,6 +775,7 @@ Value *InstCombinerImpl::SimplifyDemandedUseBits(Value *V,
APInt DemandedMask,
BinaryOperator *LShr = BinaryOperator::CreateLShr(I->getOperand(0),
I->getOperand(1));
LShr->setIsExact(cast<BinaryOperator>(I)->isExact());
+ LShr->takeName(I);
return InsertNewInstWith(LShr, I->getIterator());
} else if (Known.One[BitWidth-ShiftAmt-1]) { // New bits are known one.
Known.One |= HighBits;
@@ -1849,3 +1851,139 @@ Value
*InstCombinerImpl::SimplifyDemandedVectorElts(Value *V,
return MadeChange ? I : nullptr;
}
+
+/// For floating-point classes that resolve to a single bit pattern, return
that
+/// value.
+static Constant *getFPClassConstant(Type *Ty, FPClassTest Mask) {
+ switch (Mask) {
+ case fcPosZero:
+ return ConstantFP::getZero(Ty);
+ case fcNegZero:
+ return ConstantFP::getZero(Ty, true);
+ case fcPosInf:
+ return ConstantFP::getInfinity(Ty);
+ case fcNegInf:
+ return ConstantFP::getInfinity(Ty, true);
+ case fcNone:
+ return PoisonValue::get(Ty);
+ default:
+ return nullptr;
+ }
+}
+
+Value *InstCombinerImpl::SimplifyDemandedUseFPClass(
+ Value *V, const FPClassTest DemandedMask, KnownFPClass &Known,
+ unsigned Depth, Instruction *CxtI) {
+ assert(Depth <= MaxAnalysisRecursionDepth && "Limit Search Depth");
+ Type *VTy = V->getType();
+
+ assert(Known == KnownFPClass() && "expected uninitialized state");
+
+ if (DemandedMask == fcNone)
+ return isa<UndefValue>(V) ? nullptr : PoisonValue::get(VTy);
+
+ if (Depth == MaxAnalysisRecursionDepth)
+ return nullptr;
+
+ Instruction *I = dyn_cast<Instruction>(V);
+ if (!I) {
+ // Handle constants and arguments
+ Known = computeKnownFPClass(V, fcAllFlags, CxtI, Depth + 1);
+ Value *FoldedToConst =
+ getFPClassConstant(VTy, DemandedMask & Known.KnownFPClasses);
+ return FoldedToConst == V ? nullptr : FoldedToConst;
+ }
+
+ if (!I->hasOneUse())
+ return nullptr;
+
+ // TODO: Should account for nofpclass/FastMathFlags on current instruction
+ switch (I->getOpcode()) {
+ case Instruction::FNeg: {
+ if (SimplifyDemandedFPClass(I, 0, llvm::fneg(DemandedMask), Known,
+ Depth + 1))
+ return I;
+ Known.fneg();
+ break;
+ }
+ case Instruction::Call: {
+ CallInst *CI = cast<CallInst>(I);
+ switch (CI->getIntrinsicID()) {
+ case Intrinsic::fabs:
+ if (SimplifyDemandedFPClass(I, 0, llvm::inverse_fabs(DemandedMask),
Known,
+ Depth + 1))
+ return I;
+ Known.fabs();
+ break;
+ case Intrinsic::arithmetic_fence:
+ if (SimplifyDemandedFPClass(I, 0, DemandedMask, Known, Depth + 1))
+ return I;
+ break;
+ case Intrinsic::copysign: {
+ // Flip on more potentially demanded classes
+ const FPClassTest DemandedMaskAnySign = llvm::unknown_sign(DemandedMask);
+ if (SimplifyDemandedFPClass(I, 0, DemandedMaskAnySign, Known, Depth + 1))
+ return I;
+
+ if ((DemandedMask & fcPositive) == fcNone) {
+ // Roundabout way of replacing with fneg(fabs)
+ I->setOperand(1, ConstantFP::get(VTy, -1.0));
+ return I;
+ }
+
+ if ((DemandedMask & fcNegative) == fcNone) {
+ // Roundabout way of replacing with fabs
+ I->setOperand(1, ConstantFP::getZero(VTy));
+ return I;
+ }
+
+ KnownFPClass KnownSign =
+ computeKnownFPClass(I->getOperand(1), fcAllFlags, CxtI, Depth + 1);
+ Known.copysign(KnownSign);
+ break;
+ }
+ default:
+ Known = computeKnownFPClass(I, ~DemandedMask, CxtI, Depth + 1);
+ break;
+ }
+
+ break;
+ }
+ case Instruction::Select: {
+ KnownFPClass KnownLHS, KnownRHS;
+ if (SimplifyDemandedFPClass(I, 2, DemandedMask, KnownRHS, Depth + 1) ||
+ SimplifyDemandedFPClass(I, 1, DemandedMask, KnownLHS, Depth + 1))
+ return I;
+
+ if (KnownLHS.isKnownNever(DemandedMask))
+ return I->getOperand(2);
+ if (KnownRHS.isKnownNever(DemandedMask))
+ return I->getOperand(1);
+
+ // TODO: Recognize clamping patterns
+ Known = KnownLHS | KnownRHS;
+ break;
+ }
+ default:
+ Known = computeKnownFPClass(I, ~DemandedMask, CxtI, Depth + 1);
+ break;
+ }
+
+ return getFPClassConstant(VTy, DemandedMask & Known.KnownFPClasses);
+}
+
+bool InstCombinerImpl::SimplifyDemandedFPClass(Instruction *I, unsigned OpNo,
+ FPClassTest DemandedMask,
+ KnownFPClass &Known,
+ unsigned Depth) {
+ Use &U = I->getOperandUse(OpNo);
+ Value *NewVal =
+ SimplifyDemandedUseFPClass(U.get(), DemandedMask, Known, Depth, I);
+ if (!NewVal)
+ return false;
+ if (Instruction *OpInst = dyn_cast<Instruction>(U))
+ salvageDebugInfo(*OpInst);
+
+ replaceUse(U, NewVal);
+ return true;
+}
diff --git a/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
b/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
index 26fdef672506a6..4f2f4edea6e09d 100644
--- a/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
@@ -2904,8 +2904,22 @@ Instruction *InstCombinerImpl::visitFree(CallInst &FI,
Value *Op) {
}
Instruction *InstCombinerImpl::visitReturnInst(ReturnInst &RI) {
- // Nothing for now.
- return nullptr;
+ Value *RetVal = RI.getReturnValue();
+ if (!RetVal || !AttributeFuncs::isNoFPClassCompatibleType(RetVal->getType()))
+ return nullptr;
+
+ Function *F = RI.getFunction();
+ FPClassTest ReturnClass = F->getAttributes().getRetNoFPClass();
+ if (ReturnClass == fcNone)
+ return nullptr;
+
+ KnownFPClass KnownClass;
+ Value *Simplified =
+ SimplifyDemandedUseFPClass(RetVal, ~ReturnClass, KnownClass, 0, &RI);
+ if (!Simplified)
+ return nullptr;
+
+ return ReturnInst::Create(RI.getContext(), Simplified);
}
// WARNING: keep in sync with SimplifyCFGOpt::simplifyUnreachable()!
diff --git a/llvm/test/Transforms/InstCombine/simplify-demanded-fpclass.ll
b/llvm/test/Transforms/InstCombine/simplify-demanded-fpclass.ll
index 9817b6e13ca8ae..4f9396add2370b 100644
--- a/llvm/test/Transforms/InstCombine/simplify-demanded-fpclass.ll
+++ b/llvm/test/Transforms/InstCombine/simplify-demanded-fpclass.ll
@@ -42,7 +42,7 @@ define nofpclass(inf) float @ret_nofpclass_inf_undef() {
define nofpclass(all) float @ret_nofpclass_all_var(float %arg) {
; CHECK-LABEL: define nofpclass(all) float @ret_nofpclass_all_var
; CHECK-SAME: (float [[ARG:%.*]]) {
-; CHECK-NEXT: ret float [[ARG]]
+; CHECK-NEXT: ret float poison
;
ret float %arg
}
@@ -51,7 +51,7 @@ define nofpclass(all) float @ret_nofpclass_all_var(float
%arg) {
define nofpclass(all) <2 x float> @ret_nofpclass_all_var_vector(<2 x float>
%arg) {
; CHECK-LABEL: define nofpclass(all) <2 x float> @ret_nofpclass_all_var_vector
; CHECK-SAME: (<2 x float> [[ARG:%.*]]) {
-; CHECK-NEXT: ret <2 x float> [[ARG]]
+; CHECK-NEXT: ret <2 x float> poison
;
ret <2 x float> %arg
}
@@ -65,14 +65,14 @@ define nofpclass(inf) float @ret_nofpclass_inf__0() {
define nofpclass(inf) float @ret_nofpclass_inf__pinf() {
; CHECK-LABEL: define nofpclass(inf) float @ret_nofpclass_inf__pinf() {
-; CHECK-NEXT: ret float 0x7FF0000000000000
+; CHECK-NEXT: ret float poison
;
ret float 0x7FF0000000000000
}
define nofpclass(pinf) float @ret_nofpclass_pinf__pinf() {
; CHECK-LABEL: define nofpclass(pinf) float @ret_nofpclass_pinf__pinf() {
-; CHECK-NEXT: ret float 0x7FF0000000000000
+; CHECK-NEXT: ret float poison
;
ret float 0x7FF0000000000000
}
@@ -86,7 +86,7 @@ define nofpclass(pinf) float @ret_nofpclass_pinf__ninf() {
define nofpclass(inf) float @ret_nofpclass_inf__ninf() {
; CHECK-LABEL: define nofpclass(inf) float @ret_nofpclass_inf__ninf() {
-; CHECK-NEXT: ret float 0xFFF0000000000000
+; CHECK-NEXT: ret float poison
;
ret float 0xFFF0000000000000
}
@@ -106,8 +106,7 @@ define nofpclass(inf) float
@ret_nofpclass_inf__select_nofpclass_inf_lhs(i1 %con
define nofpclass(inf) float
@ret_nofpclass_inf__select_nofpclass_arg_only_inf_lhs(i1 %cond, float
nofpclass(nan norm zero sub) %x, float %y) {
; CHECK-LABEL: define nofpclass(inf) float
@ret_nofpclass_inf__select_nofpclass_arg_only_inf_lhs
; CHECK-SAME: (i1 [[COND:%.*]], float nofpclass(nan zero sub norm) [[X:%.*]],
float [[Y:%.*]]) {
-; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[COND]], float [[X]], float [[Y]]
-; CHECK-NEXT: ret float [[SELECT]]
+; CHECK-NEXT: ret float [[Y]]
;
%select = select i1 %cond, float %x, float %y
ret float %select
@@ -117,8 +116,7 @@ define nofpclass(inf) float
@ret_nofpclass_inf__select_nofpclass_arg_only_inf_lh
define nofpclass(inf) float
@ret_nofpclass_inf__select_nofpclass_arg_only_inf_rhs(i1 %cond, float %x, float
nofpclass(nan norm zero sub) %y) {
; CHECK-LABEL: define nofpclass(inf) float
@ret_nofpclass_inf__select_nofpclass_arg_only_inf_rhs
; CHECK-SAME: (i1 [[COND:%.*]], float [[X:%.*]], float nofpclass(nan zero sub
norm) [[Y:%.*]]) {
-; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[COND]], float [[X]], float [[Y]]
-; CHECK-NEXT: ret float [[SELECT]]
+; CHECK-NEXT: ret float [[X]]
;
%select = select i1 %cond, float %x, float %y
ret float %select
@@ -128,8 +126,7 @@ define nofpclass(inf) float
@ret_nofpclass_inf__select_nofpclass_arg_only_inf_rh
define nofpclass(inf) [3 x [2 x float]] @ret_float_array(i1 %cond, [3 x [2 x
float]] nofpclass(nan norm zero sub) %x, [3 x [2 x float]] %y) {
; CHECK-LABEL: define nofpclass(inf) [3 x [2 x float]] @ret_float_array
; CHECK-SAME: (i1 [[COND:%.*]], [3 x [2 x float]] nofpclass(nan zero sub norm)
[[X:%.*]], [3 x [2 x float]] [[Y:%.*]]) {
-; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[COND]], [3 x [2 x float]] [[X]],
[3 x [2 x float]] [[Y]]
-; CHECK-NEXT: ret [3 x [2 x float]] [[SELECT]]
+; CHECK-NEXT: ret [3 x [2 x float]] [[Y]]
;
%select = select i1 %cond, [3 x [2 x float]] %x, [3 x [2 x float]] %y
ret [3 x [2 x float ]] %select
@@ -139,8 +136,7 @@ define nofpclass(inf) [3 x [2 x float]] @ret_float_array(i1
%cond, [3 x [2 x flo
define nofpclass(inf) float @ret_nofpclass_inf__select_pinf_lhs(i1 %cond,
float %x) {
; CHECK-LABEL: define nofpclass(inf) float @ret_nofpclass_inf__select_pinf_lhs
; CHECK-SAME: (i1 [[COND:%.*]], float [[X:%.*]]) {
-; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[COND]], float
0x7FF0000000000000, float [[X]]
-; CHECK-NEXT: ret float [[SELECT]]
+; CHECK-NEXT: ret float [[X]]
;
%select = select i1 %cond, float 0x7FF0000000000000, float %x
ret float %select
@@ -150,8 +146,7 @@ define nofpclass(inf) float
@ret_nofpclass_inf__select_pinf_lhs(i1 %cond, float
define nofpclass(inf) float @ret_nofpclass_inf__select_pinf_rhs(i1 %cond,
float %x) {
; CHECK-LABEL: define nofpclass(inf) float @ret_nofpclass_inf__select_pinf_rhs
; CHECK-SAME: (i1 [[COND:%.*]], float [[X:%.*]]) {
-; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[COND]], float [[X]], float
0x7FF0000000000000
-; CHECK-NEXT: ret float [[SELECT]]
+; CHECK-NEXT: ret float [[X]]
;
%select = select i1 %cond, float %x, float 0x7FF0000000000000
ret float %select
@@ -161,8 +156,7 @@ define nofpclass(inf) float
@ret_nofpclass_inf__select_pinf_rhs(i1 %cond, float
define nofpclass(inf) float @ret_nofpclass_inf__select_pinf_or_ninf(i1 %cond,
float %x) {
; CHECK-LABEL: define nofpclass(inf) float
@ret_nofpclass_inf__select_pinf_or_ninf
; CHECK-SAME: (i1 [[COND:%.*]], float [[X:%.*]]) {
-; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[COND]], float
0x7FF0000000000000, float 0xFFF0000000000000
-; CHECK-NEXT: ret float [[SELECT]]
+; CHECK-NEXT: ret float poison
;
%select = select i1 %cond, float 0x7FF0000000000000, float 0xFFF0000000000000
ret float %select
@@ -172,8 +166,7 @@ define nofpclass(inf) float
@ret_nofpclass_inf__select_pinf_or_ninf(i1 %cond, fl
define nofpclass(inf) float @ret_nofpclass_inf__select_ninf_or_pinf(i1 %cond,
float %x) {
; CHECK-LABEL: define nofpclass(inf) float
@ret_nofpclass_inf__select_ninf_or_pinf
; CHECK-SAME: (i1 [[COND:%.*]], float [[X:%.*]]) {
-; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[COND]], float
0xFFF0000000000000, float 0x7FF0000000000000
-; CHECK-NEXT: ret float [[SELECT]]
+; CHECK-NEXT: ret float poison
;
%select = select i1 %cond, float 0xFFF0000000000000, float 0x7FF0000000000000
ret float %select
@@ -183,8 +176,7 @@ define nofpclass(inf) float
@ret_nofpclass_inf__select_ninf_or_pinf(i1 %cond, fl
define nofpclass(ninf) float @ret_nofpclass_ninf__select_ninf_or_pinf(i1
%cond, float %x) {
; CHECK-LABEL: define nofpclass(ninf) float
@ret_nofpclass_ninf__select_ninf_or_pinf
; CHECK-SAME: (i1 [[COND:%.*]], float [[X:%.*]]) {
-; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[COND]], float
0xFFF0000000000000, float 0x7FF0000000000000
-; CHECK-NEXT: ret float [[SELECT]]
+; CHECK-NEXT: ret float 0x7FF0000000000000
;
%select = select i1 %cond, float 0xFFF0000000000000, float 0x7FF0000000000000
ret float %select
@@ -194,8 +186,7 @@ define nofpclass(ninf) float
@ret_nofpclass_ninf__select_ninf_or_pinf(i1 %cond,
define nofpclass(pinf) float @ret_nofpclass_pinf__select_ninf_or_pinf(i1
%cond, float %x) {
; CHECK-LABEL: define nofpclass(pinf) float
@ret_nofpclass_pinf__select_ninf_or_pinf
; CHECK-SAME: (i1 [[COND:%.*]], float [[X:%.*]]) {
-; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[COND]], float
0xFFF0000000000000, float 0x7FF0000000000000
-; CHECK-NEXT: ret float [[SELECT]]
+; CHECK-NEXT: ret float 0xFFF0000000000000
;
%select = select i1 %cond, float 0xFFF0000000000000, float 0x7FF0000000000000
ret float %select
@@ -205,8 +196,7 @@ define nofpclass(pinf) float
@ret_nofpclass_pinf__select_ninf_or_pinf(i1 %cond,
define nofpclass(zero) float @ret_nofpclass_zero__select_pzero_or_nzero(i1
%cond, float %x) {
; CHECK-LABEL: define nofpclass(zero) float
@ret_nofpclass_zero__select_pzero_or_nzero
; CHECK-SAME: (i1 [[COND:%.*]], float [[X:%.*]]) {
-; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[COND]], float 0.000000e+00,
float -0.000000e+00
-; CHECK-NEXT: ret float [[SELECT]]
+; CHECK-NEXT: ret float poison
;
%select = select i1 %cond, float 0.0, float -0.0
ret float %select
@@ -216,8 +206,7 @@ define nofpclass(zero) float
@ret_nofpclass_zero__select_pzero_or_nzero(i1 %cond
define nofpclass(nzero) float @ret_nofpclass_nzero__select_pzero_or_nzero(i1
%cond, float %x) {
; CHECK-LABEL: define nofpclass(nzero) float
@ret_nofpclass_nzero__select_pzero_or_nzero
; CHECK-SAME: (i1 [[COND:%.*]], float [[X:%.*]]) {
-; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[COND]], float 0.000000e+00,
float -0.000000e+00
-; CHECK-NEXT: ret float [[SELECT]]
+; CHECK-NEXT: ret float 0.000000e+00
;
%select = select i1 %cond, float 0.0, float -0.0
ret float %select
@@ -227,8 +216,7 @@ define nofpclass(nzero) float
@ret_nofpclass_nzero__select_pzero_or_nzero(i1 %co
define nofpclass(pzero) float @ret_nofpclass_pzero__select_pzero_or_nzero(i1
%cond, float %x) {
; CHECK-LABEL: define nofpclass(pzero) float
@ret_nofpclass_pzero__select_pzero_or_nzero
; CHECK-SAME: (i1 [[COND:%.*]], float [[X:%.*]]) {
-; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[COND]], float 0.000000e+00,
float -0.000000e+00
-; CHECK-NEXT: ret float [[SELECT]]
+; CHECK-NEXT: ret float -0.000000e+00
;
%select = select i1 %cond, float 0.0, float -0.0
ret float %select
@@ -238,8 +226,7 @@ define nofpclass(pzero) float
@ret_nofpclass_pzero__select_pzero_or_nzero(i1 %co
define nofpclass(inf) <2 x float>
@ret_nofpclass_inf__select_pinf_lhs_vector(<2 x i1> %cond, <2 x float> %x) {
; CHECK-LABEL: define nofpclass(inf) <2 x float>
@ret_nofpclass_inf__select_pinf_lhs_vector
; CHECK-SAME: (<2 x i1> [[COND:%.*]], <2 x float> [[X:%.*]]) {
-; CHECK-NEXT: [[SELECT:%.*]] = select <2 x i1> [[COND]], <2 x float> <float
0x7FF0000000000000, float 0x7FF0000000000000>, <2 x float> [[X]]
-; CHECK-NEXT: ret <2 x float> [[SELECT]]
+; CHECK-NEXT: ret <2 x float> [[X]]
;
%select = select <2 x i1> %cond, <2 x float> <float 0x7FF0000000000000,
float 0x7FF0000000000000>, <2 x float> %x
ret <2 x float> %select
@@ -249,8 +236,7 @@ define nofpclass(inf) <2 x float>
@ret_nofpclass_inf__select_pinf_lhs_vector(<2
define nofpclass(inf) <2 x float>
@ret_nofpclass_inf__select_pinf_lhs_vector_undef(<2 x i1> %cond, <2 x float>
%x) {
; CHECK-LABEL: define nofpclass(inf) <2 x float>
@ret_nofpclass_inf__select_pinf_lhs_vector_undef
; CHECK-SAME: (<2 x i1> [[COND:%.*]], <2 x float> [[X:%.*]]) {
-; CHECK-NEXT: [[SELECT:%.*]] = select <2 x i1> [[COND]], <2 x float> <float
0x7FF0000000000000, float poison>, <2 x float> [[X]]
-; CHECK-NEXT: ret <2 x float> [[SELECT]]
+; CHECK-NEXT: ret <2 x float> [[X]]
;
%select = select <2 x i1> %cond, <2 x float> <float 0x7FF0000000000000,
float poison>, <2 x float> %x
ret <2 x float> %select
@@ -260,8 +246,7 @@ define nofpclass(inf) <2 x float>
@ret_nofpclass_inf__select_pinf_lhs_vector_und
define nofpclass(inf) <2 x float>
@ret_nofpclass_inf__select_mixed_inf_lhs_vector(<2 x i1> %cond, <2 x float> %x)
{
; CHECK-LABEL: define nofpclass(inf) <2 x float>
@ret_nofpclass_inf__select_mixed_inf_lhs_vector
; CHECK-SAME: (<2 x i1> [[COND:%.*]], <2 x float> [[X:%.*]]) {
-; CHECK-NEXT: [[SELECT:%.*]] = select <2 x i1> [[COND]], <2 x float> <float
0x7FF0000000000000, float 0xFFF0000000000000>, <2 x float> [[X]]
-; CHECK-NEXT: ret <2 x float> [[SELECT]]
+; CHECK-NEXT: ret <2 x float> [[X]]
;
%select = select <2 x i1> %cond, <2 x float> <float 0x7FF0000000000000,
float 0xFFF0000000000000>, <2 x float> %x
ret <2 x float> %select
@@ -327,8 +312,7 @@ define nofpclass(nan) float
@ret_nofpclass_nan__select_pinf_rhs(i1 %cond, float
define nofpclass(inf nan) float
@ret_nofpclass_inf_nan__select_chain_inf_nan_0(i1 %cond, float %x) {
; CHECK-LABEL: define nofpclass(nan inf) float
@ret_nofpclass_inf_nan__select_chain_inf_nan_0
; CHECK-SAME: (i1 [[COND:%.*]], float [[X:%.*]]) {
-; CHECK-NEXT: [[SELECT1:%.*]] = select i1 [[COND]], float
0x7FF0000000000000, float [[X]]
-; CHECK-NEXT: ret float [[SELECT1]]
+; CHECK-NEXT: ret float [[X]]
;
%select0 = select i1 %cond, float 0x7FF8000000000000, float %x
%select1 = select i1 %cond, float 0x7FF0000000000000, float %select0
@@ -338,8 +322,7 @@ define nofpclass(inf nan) float
@ret_nofpclass_inf_nan__select_chain_inf_nan_0(i
define nofpclass(inf nan) float
@ret_nofpclass_inf_nan__select_chain_inf_nan_1(i1 %cond, float %x) {
; CHECK-LABEL: define nofpclass(nan inf) float
@ret_nofpclass_inf_nan__select_chain_inf_nan_1
; CHECK-SAME: (i1 [[COND:%.*]], float [[X:%.*]]) {
-; CHECK-NEXT: [[SELECT1:%.*]] = select i1 [[COND]], float
0x7FF0000000000000, float 0x7FF8000000000000
-; CHECK-NEXT: ret float [[SELECT1]]
+; CHECK-NEXT: ret float poison
;
%select0 = select i1 %cond, float %x, float 0x7FF8000000000000
%select1 = select i1 %cond, float 0x7FF0000000000000, float %select0
@@ -360,8 +343,7 @@ define nofpclass(nan) float
@ret_nofpclass_nan__select_chain_inf_nan(i1 %cond, f
define nofpclass(inf) float @ret_nofpclass_inf__select_chain_inf_nan_0(i1
%cond, float %x) {
; CHECK-LABEL: define nofpclass(inf) float
@ret_nofpclass_inf__select_chain_inf_nan_0
; CHECK-SAME: (i1 [[COND:%.*]], float [[X:%.*]]) {
-; CHECK-NEXT: [[SELECT1:%.*]] = select i1 [[COND]], float
0x7FF0000000000000, float [[X]]
-; CHECK-NEXT: ret float [[SELECT1]]
+; CHECK-NEXT: ret float [[X]]
;
%select0 = select i1 %cond, float 0x7FF8000000000000, float %x
%select1 = select i1 %cond, float 0x7FF0000000000000, float %select0
@@ -371,8 +353,7 @@ define nofpclass(inf) float
@ret_nofpclass_inf__select_chain_inf_nan_0(i1 %cond,
define nofpclass(inf) float @ret_nofpclass_inf__select_chain_inf_nan_1(i1
%cond, float %x) {
; CHECK-LABEL: define nofpclass(inf) float
@ret_nofpclass_inf__select_chain_inf_nan_1
; CHECK-SAME: (i1 [[COND:%.*]], float [[X:%.*]]) {
-; CHECK-NEXT: [[SELECT1:%.*]] = select i1 [[COND]], float
0x7FF8000000000000, float 0x7FF0000000000000
-; CHECK-NEXT: ret float [[SELECT1]]
+; CHECK-NEXT: ret float 0x7FF8000000000000
;
%select0 = select i1 %cond, float 0x7FF8000000000000, float %x
%select1 = select i1 %cond, float %select0, float 0x7FF0000000000000
@@ -383,8 +364,7 @@ define nofpclass(inf) float
@ret_nofpclass_inf__select_chain_inf_nan_1(i1 %cond,
define nofpclass(inf) float @ret_nofpclass_inf__fabs_select_ninf_rhs(i1 %cond,
float %x) {
; CHECK-LABEL: define nofpclass(inf) float
@ret_nofpclass_inf__fabs_select_ninf_rhs
; CHECK-SAME: (i1 [[COND:%.*]], float [[X:%.*]]) {
-; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[COND]], float [[X]], float
0xFFF0000000000000
-; CHECK-NEXT: [[FABS:%.*]] = call float @llvm.fabs.f32(float [[SELECT]])
+; CHECK-NEXT: [[FABS:%.*]] = call float @llvm.fabs.f32(float [[X]])
; CHECK-NEXT: ret float [[FABS]]
;
%select = select i1 %cond, float %x, float 0xFFF0000000000000
@@ -396,8 +376,7 @@ define nofpclass(inf) float
@ret_nofpclass_inf__fabs_select_ninf_rhs(i1 %cond, f
define nofpclass(inf) float @ret_nofpclass_inf__fabs_select_pinf_rhs(i1 %cond,
float %x) {
; CHECK-LABEL: define nofpclass(inf) float
@ret_nofpclass_inf__fabs_select_pinf_rhs
; CHECK-SAME: (i1 [[COND:%.*]], float [[X:%.*]]) {
-; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[COND]], float [[X]], float
0x7FF0000000000000
-; CHECK-NEXT: [[FABS:%.*]] = call float @llvm.fabs.f32(float [[SELECT]])
+; CHECK-NEXT: [[FABS:%.*]] = call float @llvm.fabs.f32(float [[X]])
; CHECK-NEXT: ret float [[FABS]]
;
%select = select i1 %cond, float %x, float 0x7FF0000000000000
@@ -421,8 +400,7 @@ define nofpclass(ninf nnorm nsub nzero) float
@ret_nofpclass_no_negatives__fabs_
define nofpclass(pinf pnorm psub pzero) float
@ret_nofpclass_no_positives__fabs_select_pinf_rhs(i1 %cond, float %x) {
; CHECK-LABEL: define nofpclass(pinf pzero psub pnorm) float
@ret_nofpclass_no_positives__fabs_select_pinf_rhs
; CHECK-SAME: (i1 [[COND:%.*]], float [[X:%.*]]) {
-; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[COND]], float [[X]], float
0x7FF0000000000000
-; CHECK-NEXT: [[FABS:%.*]] = call float @llvm.fabs.f32(float [[SELECT]])
+; CHECK-NEXT: [[FABS:%.*]] = call float @llvm.fabs.f32(float [[X]])
; CHECK-NEXT: ret float [[FABS]]
;
%select = select i1 %cond, float %x, float 0x7FF0000000000000
@@ -446,9 +424,7 @@ define nofpclass(nan ninf nnorm nsub nzero) float
@ret_nofpclass_no_negatives_na
define nofpclass(nan pinf pnorm psub pzero) float
@ret_nofpclass_no_positives_nan__fabs_select_pinf_rhs(i1 %cond, float %x) {
; CHECK-LABEL: define nofpclass(nan pinf pzero psub pnorm) float
@ret_nofpclass_no_positives_nan__fabs_select_pinf_rhs
; CHECK-SAME: (i1 [[COND:%.*]], float [[X:%.*]]) {
-; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[COND]], float [[X]], float
0x7FF0000000000000
-; CHECK-NEXT: [[FABS:%.*]] = call float @llvm.fabs.f32(float [[SELECT]])
-; CHECK-NEXT: ret float [[FABS]]
+; CHECK-NEXT: ret float poison
;
%select = select i1 %cond, float %x, float 0x7FF0000000000000
%fabs = call float @llvm.fabs.f32(float %select)
@@ -459,8 +435,7 @@ define nofpclass(nan pinf pnorm psub pzero) float
@ret_nofpclass_no_positives_na
define nofpclass(inf) float @ret_nofpclass_inf__fneg_select_ninf_rhs(i1 %cond,
float %x) {
; CHECK-LABEL: define nofpclass(inf) float
@ret_nofpclass_inf__fneg_select_ninf_rhs
; CHECK-SAME: (i1 [[COND:%.*]], float [[X:%.*]]) {
-; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[COND]], float [[X]], float
0xFFF0000000000000
-; CHECK-NEXT: [[FNEG:%.*]] = fneg float [[SELECT]]
+; CHECK-NEXT: [[FNEG:%.*]] = fneg float [[X]]
; CHECK-NEXT: ret float [[FNEG]]
;
%select = select i1 %cond, float %x, float 0xFFF0000000000000
@@ -472,8 +447,7 @@ define nofpclass(inf) float
@ret_nofpclass_inf__fneg_select_ninf_rhs(i1 %cond, f
define nofpclass(inf nnorm nsub nzero) float
@ret_nofpclass_nonegatives_noinf___fneg_select_pinf_rhs(i1 %cond, float %x) {
; CHECK-LABEL: define nofpclass(inf nzero nsub nnorm) float
@ret_nofpclass_nonegatives_noinf___fneg_select_pinf_rhs
; CHECK-SAME: (i1 [[COND:%.*]], float [[X:%.*]]) {
-; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[COND]], float [[X]], float
0x7FF0000000000000
-; CHECK-NEXT: [[FNEG:%.*]] = fneg float [[SELECT]]
+; CHECK-NEXT: [[FNEG:%.*]] = fneg float [[X]]
; CHECK-NEXT: ret float [[FNEG]]
;
%select = select i1 %cond, float %x, float 0x7FF0000000000000
@@ -485,8 +459,7 @@ define nofpclass(inf nnorm nsub nzero) float
@ret_nofpclass_nonegatives_noinf___
define nofpclass(inf nnorm nsub nzero) float
@ret_nofpclass_nonegatives_noinf___fneg_select_ninf_lhs(i1 %cond, float %x) {
; CHECK-LABEL: define nofpclass(inf nzero nsub nnorm) float
@ret_nofpclass_nonegatives_noinf___fneg_select_ninf_lhs
; CHECK-SAME: (i1 [[COND:%.*]], float [[X:%.*]]) {
-; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[COND]], float
0xFFF0000000000000, float [[X]]
-; CHECK-NEXT: [[FNEG:%.*]] = fneg float [[SELECT]]
+; CHECK-NEXT: [[FNEG:%.*]] = fneg float [[X]]
; CHECK-NEXT: ret float [[FNEG]]
;
%select = select i1 %cond, float 0xFFF0000000000000, float %x
@@ -510,8 +483,7 @@ define nofpclass(pzero psub pnorm pinf) float
@ret_nofpclass_nopositives___fneg_
define nofpclass(inf) float @ret_nofpclass_inf__fneg_fabs_select_pinf_rhs(i1
%cond, float %x) {
; CHECK-LABEL: define nofpclass(inf) float
@ret_nofpclass_inf__fneg_fabs_select_pinf_rhs
; CHECK-SAME: (i1 [[COND:%.*]], float [[X:%.*]]) {
-; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[COND]], float [[X]], float
0x7FF0000000000000
-; CHECK-NEXT: [[FABS:%.*]] = call float @llvm.fabs.f32(float [[SELECT]])
+; CHECK-NEXT: [[FABS:%.*]] = call float @llvm.fabs.f32(float [[X]])
; CHECK-NEXT: [[FNEG:%.*]] = fneg float [[FABS]]
; CHECK-NEXT: ret float [[FNEG]]
;
@@ -525,8 +497,7 @@ define nofpclass(inf) float
@ret_nofpclass_inf__fneg_fabs_select_pinf_rhs(i1 %co
define nofpclass(ninf nnorm nsub nzero) float
@ret_nofpclass_nonegatives__fneg_fabs_select_pinf_rhs(i1 %cond, float %x) {
; CHECK-LABEL: define nofpclass(ninf nzero nsub nnorm) float
@ret_nofpclass_nonegatives__fneg_fabs_select_pinf_rhs
; CHECK-SAME: (i1 [[COND:%.*]], float [[X:%.*]]) {
-; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[COND]], float [[X]], float
0x7FF0000000000000
-; CHECK-NEXT: [[FABS:%.*]] = call float @llvm.fabs.f32(float [[SELECT]])
+; CHECK-NEXT: [[FABS:%.*]] = call float @llvm.fabs.f32(float [[X]])
; CHECK-NEXT: [[FNEG:%.*]] = fneg float [[FABS]]
; CHECK-NEXT: ret float [[FNEG]]
;
@@ -541,10 +512,7 @@ define nofpclass(ninf nnorm nsub nzero) float
@ret_nofpclass_nonegatives__fneg_f
define nofpclass(nan ninf nnorm nsub nzero) float
@ret_nofpclass_nonegatives_nonan__fneg_fabs_select_pinf_rhs(i1 %cond, float %x)
{
; CHECK-LABEL: define nofpclass(nan ninf nzero nsub nnorm) float
@ret_nofpclass_nonegatives_nonan__fneg_fabs_select_pinf_rhs
; CHECK-SAME: (i1 [[COND:%.*]], float [[X:%.*]]) {
-; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[COND]], float [[X]], float
0x7FF0000000000000
-; CHECK-NEXT: [[FABS:%.*]] = call float @llvm.fabs.f32(float [[SELECT]])
-; CHECK-NEXT: [[FNEG:%.*]] = fneg float [[FABS]]
-; CHECK-NEXT: ret float [[FNEG]]
+; CHECK-NEXT: ret float poison
;
%select = select i1 %cond, float %x, float 0x7FF0000000000000
%fabs = call float @llvm.fabs.f32(float %select)
@@ -556,8 +524,7 @@ define nofpclass(nan ninf nnorm nsub nzero) float
@ret_nofpclass_nonegatives_non
define nofpclass(inf) float
@ret_nofpclass_inf__copysign_unknown_select_pinf_rhs(i1 %cond, float %x, float
%unknown.sign) {
; CHECK-LABEL: define nofpclass(inf) float
@ret_nofpclass_inf__copysign_unknown_select_pinf_rhs
; CHECK-SAME: (i1 [[COND:%.*]], float [[X:%.*]], float [[UNKNOWN_SIGN:%.*]]) {
-; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[COND]], float [[X]], float
0x7FF0000000000000
-; CHECK-NEXT: [[COPYSIGN:%.*]] = call float @llvm.copysign.f32(float
[[SELECT]], float [[UNKNOWN_SIGN]])
+; CHECK-NEXT: [[COPYSIGN:%.*]] = call float @llvm.copysign.f32(float [[X]],
float [[UNKNOWN_SIGN]])
; CHECK-NEXT: ret float [[COPYSIGN]]
;
%select = select i1 %cond, float %x, float 0x7FF0000000000000
@@ -568,8 +535,7 @@ define nofpclass(inf) float
@ret_nofpclass_inf__copysign_unknown_select_pinf_rhs
define nofpclass(inf) float
@ret_nofpclass_inf__copysign_positive_select_pinf_rhs(i1 %cond, float %x) {
; CHECK-LABEL: define nofpclass(inf) float
@ret_nofpclass_inf__copysign_positive_select_pinf_rhs
; CHECK-SAME: (i1 [[COND:%.*]], float [[X:%.*]]) {
-; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[COND]], float [[X]], float
0x7FF0000000000000
-; CHECK-NEXT: [[COPYSIGN:%.*]] = call float @llvm.fabs.f32(float [[SELECT]])
+; CHECK-NEXT: [[COPYSIGN:%.*]] = call float @llvm.fabs.f32(float [[X]])
; CHECK-NEXT: ret float [[COPYSIGN]]
;
%select = select i1 %cond, float %x, float 0x7FF0000000000000
@@ -580,8 +546,7 @@ define nofpclass(inf) float
@ret_nofpclass_inf__copysign_positive_select_pinf_rh
define nofpclass(inf) float
@ret_nofpclass_inf__copysign_negative_select_pinf_rhs(i1 %cond, float %x) {
; CHECK-LABEL: define nofpclass(inf) float
@ret_nofpclass_inf__copysign_negative_select_pinf_rhs
; CHECK-SAME: (i1 [[COND:%.*]], float [[X:%.*]]) {
-; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[COND]], float [[X]], float
0x7FF0000000000000
-; CHECK-NEXT: [[TMP1:%.*]] = call float @llvm.fabs.f32(float [[SELECT]])
+; CHECK-NEXT: [[TMP1:%.*]] = call float @llvm.fabs.f32(float [[X]])
; CHECK-NEXT: [[COPYSIGN:%.*]] = fneg float [[TMP1]]
; CHECK-NEXT: ret float [[COPYSIGN]]
;
@@ -594,7 +559,8 @@ define nofpclass(inf) float
@ret_nofpclass_inf__copysign_negative_select_pinf_rh
define nofpclass(pinf pnorm psub pzero) float
@ret_nofpclass_nopositives_copysign(float %x, float %unknown.sign) {
; CHECK-LABEL: define nofpclass(pinf pzero psub pnorm) float
@ret_nofpclass_nopositives_copysign
; CHECK-SAME: (float [[X:%.*]], float [[UNKNOWN_SIGN:%.*]]) {
-; CHECK-NEXT: [[COPYSIGN:%.*]] = call float @llvm.copysign.f32(float [[X]],
float [[UNKNOWN_SIGN]])
+; CHECK-NEXT: [[TMP1:%.*]] = call float @llvm.fabs.f32(float [[X]])
+; CHECK-NEXT: [[COPYSIGN:%.*]] = fneg float [[TMP1]]
; CHECK-NEXT: ret float [[COPYSIGN]]
;
%copysign = call float @llvm.copysign.f32(float %x, float %unknown.sign)
@@ -605,7 +571,8 @@ define nofpclass(pinf pnorm psub pzero) float
@ret_nofpclass_nopositives_copysig
define nofpclass(pinf pnorm psub pzero) float
@ret_nofpclass_nopositives_copysign_nnan_flag(float %x, float %unknown.sign) {
; CHECK-LABEL: define nofpclass(pinf pzero psub pnorm) float
@ret_nofpclass_nopositives_copysign_nnan_flag
; CHECK-SAME: (float [[X:%.*]], float [[UNKNOWN_SIGN:%.*]]) {
-; CHECK-NEXT: [[COPYSIGN:%.*]] = call nnan float @llvm.copysign.f32(float
[[X]], float [[UNKNOWN_SIGN]])
+; CHECK-NEXT: [[TMP1:%.*]] = call nnan float @llvm.fabs.f32(float [[X]])
+; CHECK-NEXT: [[COPYSIGN:%.*]] = fneg nnan float [[TMP1]]
; CHECK-NEXT: ret float [[COPYSIGN]]
;
%copysign = call nnan float @llvm.copysign.f32(float %x, float %unknown.sign)
@@ -616,7 +583,8 @@ define nofpclass(pinf pnorm psub pzero) float
@ret_nofpclass_nopositives_copysig
define nofpclass(nan pinf pnorm psub pzero) float
@ret_nofpclass_nopositives_nonan_copysign(float %x, float %unknown.sign) {
; CHECK-LABEL: define nofpclass(nan pinf pzero psub pnorm) float
@ret_nofpclass_nopositives_nonan_copysign
; CHECK-SAME: (float [[X:%.*]], float [[UNKNOWN_SIGN:%.*]]) {
-; CHECK-NEXT: [[COPYSIGN:%.*]] = call float @llvm.copysign.f32(float [[X]],
float [[UNKNOWN_SIGN]])
+; CHECK-NEXT: [[TMP1:%.*]] = call float @llvm.fabs.f32(float [[X]])
+; CHECK-NEXT: [[COPYSIGN:%.*]] = fneg float [[TMP1]]
; CHECK-NEXT: ret float [[COPYSIGN]]
;
%copysign = call float @llvm.copysign.f32(float %x, float %unknown.sign)
@@ -627,7 +595,7 @@ define nofpclass(nan pinf pnorm psub pzero) float
@ret_nofpclass_nopositives_non
define nofpclass(ninf nnorm nsub nzero) float
@ret_nofpclass_nonegatives_copysign(float %x, float %unknown.sign) {
; CHECK-LABEL: define nofpclass(ninf nzero nsub nnorm) float
@ret_nofpclass_nonegatives_copysign
; CHECK-SAME: (float [[X:%.*]], float [[UNKNOWN_SIGN:%.*]]) {
-; CHECK-NEXT: [[COPYSIGN:%.*]] = call float @llvm.copysign.f32(float [[X]],
float [[UNKNOWN_SIGN]])
+; CHECK-NEXT: [[COPYSIGN:%.*]] = call float @llvm.fabs.f32(float [[X]])
; CHECK-NEXT: ret float [[COPYSIGN]]
;
%copysign = call float @llvm.copysign.f32(float %x, float %unknown.sign)
@@ -638,7 +606,7 @@ define nofpclass(ninf nnorm nsub nzero) float
@ret_nofpclass_nonegatives_copysig
define nofpclass(ninf nnorm nsub nzero) float
@ret_nofpclass_nonegatives_copysign_nnan_flag(float %x, float %unknown.sign) {
; CHECK-LABEL: define nofpclass(ninf nzero nsub nnorm) float
@ret_nofpclass_nonegatives_copysign_nnan_flag
; CHECK-SAME: (float [[X:%.*]], float [[UNKNOWN_SIGN:%.*]]) {
-; CHECK-NEXT: [[COPYSIGN:%.*]] = call nnan float @llvm.copysign.f32(float
[[X]], float [[UNKNOWN_SIGN]])
+; CHECK-NEXT: [[COPYSIGN:%.*]] = call nnan float @llvm.fabs.f32(float [[X]])
; CHECK-NEXT: ret float [[COPYSIGN]]
;
%copysign = call nnan float @llvm.copysign.f32(float %x, float %unknown.sign)
@@ -649,7 +617,7 @@ define nofpclass(ninf nnorm nsub nzero) float
@ret_nofpclass_nonegatives_copysig
define nofpclass(nan ninf nnorm nsub nzero) float
@ret_nofpclass_nonegatives_nonan_copysign(float %x, float %unknown.sign) {
; CHECK-LABEL: define nofpclass(nan ninf nzero nsub nnorm) float
@ret_nofpclass_nonegatives_nonan_copysign
; CHECK-SAME: (float [[X:%.*]], float [[UNKNOWN_SIGN:%.*]]) {
-; CHECK-NEXT: [[COPYSIGN:%.*]] = call float @llvm.copysign.f32(float [[X]],
float [[UNKNOWN_SIGN]])
+; CHECK-NEXT: [[COPYSIGN:%.*]] = call float @llvm.fabs.f32(float [[X]])
; CHECK-NEXT: ret float [[COPYSIGN]]
;
%copysign = call float @llvm.copysign.f32(float %x, float %unknown.sign)
@@ -659,8 +627,7 @@ define nofpclass(nan ninf nnorm nsub nzero) float
@ret_nofpclass_nonegatives_non
define nofpclass(pinf pnorm psub pzero) float
@ret_nofpclass_nopositives__copysign_fabs_select_pinf_rhs(i1 %cond, float %x,
float %sign) {
; CHECK-LABEL: define nofpclass(pinf pzero psub pnorm) float
@ret_nofpclass_nopositives__copysign_fabs_select_pinf_rhs
; CHECK-SAME: (i1 [[COND:%.*]], float [[X:%.*]], float [[SIGN:%.*]]) {
-; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[COND]], float [[X]], float
0x7FF0000000000000
-; CHECK-NEXT: [[COPYSIGN:%.*]] = call float @llvm.fabs.f32(float [[SELECT]])
+; CHECK-NEXT: [[COPYSIGN:%.*]] = call float @llvm.fabs.f32(float [[X]])
; CHECK-NEXT: ret float [[COPYSIGN]]
;
%select = select i1 %cond, float %x, float 0x7FF0000000000000
@@ -673,8 +640,7 @@ define nofpclass(pinf pnorm psub pzero) float
@ret_nofpclass_nopositives__copysi
define nofpclass(inf nnorm nsub nzero) float
@ret_nofpclass_no_negatives_noinf__copysign_unknown_select_pinf_rhs(i1 %cond,
float %x, float %unknown.sign) {
; CHECK-LABEL: define nofpclass(inf nzero nsub nnorm) float
@ret_nofpclass_no_negatives_noinf__copysign_unknown_select_pinf_rhs
; CHECK-SAME: (i1 [[COND:%.*]], float [[X:%.*]], float [[UNKNOWN_SIGN:%.*]]) {
-; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[COND]], float [[X]], float
0x7FF0000000000000
-; CHECK-NEXT: [[COPYSIGN:%.*]] = call float @llvm.copysign.f32(float
[[SELECT]], float [[UNKNOWN_SIGN]])
+; CHECK-NEXT: [[COPYSIGN:%.*]] = call float @llvm.fabs.f32(float [[X]])
; CHECK-NEXT: ret float [[COPYSIGN]]
;
%select = select i1 %cond, float %x, float 0x7FF0000000000000
@@ -686,8 +652,8 @@ define nofpclass(inf nnorm nsub nzero) float
@ret_nofpclass_no_negatives_noinf__
define nofpclass(inf pnorm psub pzero) float
@ret_nofpclass_no_positives_noinf__copysign_unknown_select_pinf_rhs(i1 %cond,
float %x, float %unknown.sign) {
; CHECK-LABEL: define nofpclass(inf pzero psub pnorm) float
@ret_nofpclass_no_positives_noinf__copysign_unknown_select_pinf_rhs
; CHECK-SAME: (i1 [[COND:%.*]], float [[X:%.*]], float [[UNKNOWN_SIGN:%.*]]) {
-; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[COND]], float [[X]], float
0x7FF0000000000000
-; CHECK-NEXT: [[COPYSIGN:%.*]] = call float @llvm.copysign.f32(float
[[SELECT]], float [[UNKNOWN_SIGN]])
+; CHECK-NEXT: [[TMP1:%.*]] = call float @llvm.fabs.f32(float [[X]])
+; CHECK-NEXT: [[COPYSIGN:%.*]] = fneg float [[TMP1]]
; CHECK-NEXT: ret float [[COPYSIGN]]
;
%select = select i1 %cond, float %x, float 0x7FF0000000000000
@@ -700,7 +666,7 @@ define nofpclass(ninf nnorm nsub nzero) float
@ret_nofpclass_no_negatives__copys
; CHECK-LABEL: define nofpclass(ninf nzero nsub nnorm) float
@ret_nofpclass_no_negatives__copysign_unknown_select_pinf_rhs
; CHECK-SAME: (i1 [[COND:%.*]], float [[X:%.*]], float [[UNKNOWN_SIGN:%.*]]) {
; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[COND]], float [[X]], float
0x7FF0000000000000
-; CHECK-NEXT: [[COPYSIGN:%.*]] = call float @llvm.copysign.f32(float
[[SELECT]], float [[UNKNOWN_SIGN]])
+; CHECK-NEXT: [[COPYSIGN:%.*]] = call float @llvm.fabs.f32(float [[SELECT]])
; CHECK-NEXT: ret float [[COPYSIGN]]
;
%select = select i1 %cond, float %x, float 0x7FF0000000000000
@@ -713,7 +679,8 @@ define nofpclass(pinf pnorm psub pzero) float
@ret_nofpclass_no_positives__copys
; CHECK-LABEL: define nofpclass(pinf pzero psub pnorm) float
@ret_nofpclass_no_positives__copysign_unknown_select_pinf_rhs
; CHECK-SAME: (i1 [[COND:%.*]], float [[X:%.*]], float [[UNKNOWN_SIGN:%.*]]) {
; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[COND]], float [[X]], float
0x7FF0000000000000
-; CHECK-NEXT: [[COPYSIGN:%.*]] = call float @llvm.copysign.f32(float
[[SELECT]], float [[UNKNOWN_SIGN]])
+; CHECK-NEXT: [[TMP1:%.*]] = call float @llvm.fabs.f32(float [[SELECT]])
+; CHECK-NEXT: [[COPYSIGN:%.*]] = fneg float [[TMP1]]
; CHECK-NEXT: ret float [[COPYSIGN]]
;
%select = select i1 %cond, float %x, float 0x7FF0000000000000
@@ -726,7 +693,7 @@ define nofpclass(nan ninf nnorm nsub nzero) float
@ret_nofpclass_no_negatives_no
; CHECK-LABEL: define nofpclass(nan ninf nzero nsub nnorm) float
@ret_nofpclass_no_negatives_nonan__copysign_unknown_select_pinf_rhs
; CHECK-SAME: (i1 [[COND:%.*]], float [[X:%.*]], float [[UNKNOWN_SIGN:%.*]]) {
; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[COND]], float [[X]], float
0x7FF0000000000000
-; CHECK-NEXT: [[COPYSIGN:%.*]] = call float @llvm.copysign.f32(float
[[SELECT]], float [[UNKNOWN_SIGN]])
+; CHECK-NEXT: [[COPYSIGN:%.*]] = call float @llvm.fabs.f32(float [[SELECT]])
; CHECK-NEXT: ret float [[COPYSIGN]]
;
%select = select i1 %cond, float %x, float 0x7FF0000000000000
@@ -739,7 +706,8 @@ define nofpclass(nan pinf pnorm psub pzero) float
@ret_nofpclass_no_positives_no
; CHECK-LABEL: define nofpclass(nan pinf pzero psub pnorm) float
@ret_nofpclass_no_positives_nonan__copysign_unknown_select_pinf_rhs
; CHECK-SAME: (i1 [[COND:%.*]], float [[X:%.*]], float [[UNKNOWN_SIGN:%.*]]) {
; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[COND]], float [[X]], float
0x7FF0000000000000
-; CHECK-NEXT: [[COPYSIGN:%.*]] = call float @llvm.copysign.f32(float
[[SELECT]], float [[UNKNOWN_SIGN]])
+; CHECK-NEXT: [[TMP1:%.*]] = call float @llvm.fabs.f32(float [[SELECT]])
+; CHECK-NEXT: [[COPYSIGN:%.*]] = fneg float [[TMP1]]
; CHECK-NEXT: ret float [[COPYSIGN]]
;
%select = select i1 %cond, float %x, float 0x7FF0000000000000
@@ -790,9 +758,7 @@ define nofpclass(nan ninf nnorm nsub nzero) float
@ret_nofpclass_nan_negatives__
define nofpclass(nan ninf nnorm nsub zero) float
@ret_nofpclass_nan_negatives_zero__select_clamp_pos_to_zero(float %x) {
; CHECK-LABEL: define nofpclass(nan ninf zero nsub nnorm) float
@ret_nofpclass_nan_negatives_zero__select_clamp_pos_to_zero
; CHECK-SAME: (float [[X:%.*]]) {
-; CHECK-NEXT: [[IS_GT_ZERO:%.*]] = fcmp ogt float [[X]], 0.000000e+00
-; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[IS_GT_ZERO]], float
0.000000e+00, float [[X]]
-; CHECK-NEXT: ret float [[SELECT]]
+; CHECK-NEXT: ret float [[X]]
;
%is.gt.zero = fcmp ogt float %x, 0.0
%select = select i1 %is.gt.zero, float 0.0, float %x
@@ -803,9 +769,7 @@ define nofpclass(nan ninf nnorm nsub zero) float
@ret_nofpclass_nan_negatives_ze
define nofpclass(ninf nnorm nsub zero) float
@ret_nofpclass_negatives_zero__select_clamp_pos_to_zero(float %x) {
; CHECK-LABEL: define nofpclass(ninf zero nsub nnorm) float
@ret_nofpclass_negatives_zero__select_clamp_pos_to_zero
; CHECK-SAME: (float [[X:%.*]]) {
-; CHECK-NEXT: [[IS_GT_ZERO:%.*]] = fcmp ogt float [[X]], 0.000000e+00
-; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[IS_GT_ZERO]], float
0.000000e+00, float [[X]]
-; CHECK-NEXT: ret float [[SELECT]]
+; CHECK-NEXT: ret float [[X]]
;
%is.gt.zero = fcmp ogt float %x, 0.0
%select = select i1 %is.gt.zero, float 0.0, float %x
@@ -819,8 +783,7 @@ define nofpclass(inf) float
@ret_nofpclass_noinfs__assumed_isinf__select_pinf_lh
; CHECK-NEXT: [[FABS_X:%.*]] = call float @llvm.fabs.f32(float [[X]])
; CHECK-NEXT: [[X_IS_INF:%.*]] = fcmp oeq float [[FABS_X]],
0x7FF0000000000000
; CHECK-NEXT: call void @llvm.assume(i1 [[X_IS_INF]])
-; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[COND]], float [[X]], float [[Y]]
-; CHECK-NEXT: ret float [[SELECT]]
+; CHECK-NEXT: ret float [[Y]]
;
%fabs.x = call float @llvm.fabs.f32(float %x)
%x.is.inf = fcmp oeq float %fabs.x, 0x7FF0000000000000
@@ -838,18 +801,13 @@ define nofpclass(nan inf nzero nsub nnorm) float
@powr_issue64870(float nofpclas
; CHECK-NEXT: [[I1:%.*]] = tail call float @llvm.log2.f32(float [[I]])
; CHECK-NEXT: [[I2:%.*]] = fmul float [[I1]], [[Y]]
; CHECK-NEXT: [[I3:%.*]] = tail call nofpclass(ninf nzero nsub nnorm) float
@llvm.exp2.f32(float [[I2]])
-; CHECK-NEXT: [[I4:%.*]] = fcmp olt float [[Y]], 0.000000e+00
-; CHECK-NEXT: [[I5:%.*]] = select i1 [[I4]], float 0x7FF0000000000000,
float 0.000000e+00
; CHECK-NEXT: [[I6:%.*]] = fcmp oeq float [[X]], 0.000000e+00
-; CHECK-NEXT: [[I7:%.*]] = select i1 [[I6]], float [[I5]], float [[I3]]
+; CHECK-NEXT: [[I7:%.*]] = select i1 [[I6]], float 0.000000e+00, float
[[I3]]
; CHECK-NEXT: [[I8:%.*]] = fcmp oeq float [[Y]], 0.000000e+00
-; CHECK-NEXT: [[I9:%.*]] = select i1 [[I6]], float 0x7FF8000000000000,
float 1.000000e+00
-; CHECK-NEXT: [[I10:%.*]] = select i1 [[I8]], float [[I9]], float [[I7]]
; CHECK-NEXT: [[I11:%.*]] = fcmp oeq float [[X]], 1.000000e+00
-; CHECK-NEXT: [[I12:%.*]] = select i1 [[I11]], float 1.000000e+00, float
[[I10]]
-; CHECK-NEXT: [[I13:%.*]] = fcmp olt float [[X]], 0.000000e+00
-; CHECK-NEXT: [[I14:%.*]] = select i1 [[I13]], float 0x7FF8000000000000,
float [[I12]]
-; CHECK-NEXT: ret float [[I14]]
+; CHECK-NEXT: [[TMP0:%.*]] = select i1 [[I11]], i1 true, i1 [[I8]]
+; CHECK-NEXT: [[I12:%.*]] = select i1 [[TMP0]], float 1.000000e+00, float
[[I7]]
+; CHECK-NEXT: ret float [[I12]]
;
entry:
%i = tail call float @llvm.fabs.f32(float %x)
@@ -881,12 +839,8 @@ define nofpclass(nan inf nzero nsub nnorm) float
@test_powr_issue64870_2(float n
; CHECK-NEXT: [[I4:%.*]] = select i1 [[I]], float 0x7FF8000000000000, float
[[ARG1]]
; CHECK-NEXT: [[I5:%.*]] = fmul float [[I4]], [[I3]]
; CHECK-NEXT: [[I6:%.*]] = tail call noundef nofpclass(ninf nzero nsub
nnorm) float @llvm.exp2.f32(float noundef [[I5]])
-; CHECK-NEXT: [[I7:%.*]] = fcmp olt float [[I4]], 0.000000e+00
-; CHECK-NEXT: [[I8:%.*]] = select i1 [[I7]], float 0x7FF0000000000000,
float 0.000000e+00
-; CHECK-NEXT: [[I9:%.*]] = fcmp ueq float [[I4]], 0.000000e+00
; CHECK-NEXT: [[I10:%.*]] = fcmp oeq float [[I2]], 0.000000e+00
-; CHECK-NEXT: [[I11:%.*]] = select i1 [[I9]], float 0x7FF8000000000000,
float [[I8]]
-; CHECK-NEXT: [[I12:%.*]] = select i1 [[I10]], float [[I11]], float [[I6]]
+; CHECK-NEXT: [[I12:%.*]] = select i1 [[I10]], float 0.000000e+00, float
[[I6]]
; CHECK-NEXT: ret float [[I12]]
;
bb:
@@ -923,16 +877,10 @@ define nofpclass(nan inf) float @pow_f32(float
nofpclass(nan inf) %arg, float no
; CHECK-NEXT: [[I11:%.*]] = and i1 [[I7]], [[I10]]
; CHECK-NEXT: [[I12:%.*]] = select i1 [[I11]], float [[ARG]], float
1.000000e+00
; CHECK-NEXT: [[I13:%.*]] = tail call noundef float
@llvm.copysign.f32(float noundef [[I4]], float noundef [[I12]])
-; CHECK-NEXT: [[I14:%.*]] = fcmp olt float [[ARG]], 0.000000e+00
-; CHECK-NEXT: [[I15:%.*]] = select i1 [[I7]], float [[I13]], float
0x7FF8000000000000
-; CHECK-NEXT: [[I16:%.*]] = select i1 [[I14]], float [[I15]], float [[I13]]
; CHECK-NEXT: [[I17:%.*]] = fcmp oeq float [[ARG]], 0.000000e+00
-; CHECK-NEXT: [[I18:%.*]] = fcmp olt float [[ARG1]], 0.000000e+00
-; CHECK-NEXT: [[I19:%.*]] = xor i1 [[I17]], [[I18]]
-; CHECK-NEXT: [[I20:%.*]] = select i1 [[I19]], float 0.000000e+00, float
0x7FF0000000000000
; CHECK-NEXT: [[I21:%.*]] = select i1 [[I11]], float [[ARG]], float
0.000000e+00
-; CHECK-NEXT: [[I22:%.*]] = tail call noundef nofpclass(nan sub norm) float
@llvm.copysign.f32(float noundef [[I20]], float noundef [[I21]])
-; CHECK-NEXT: [[I23:%.*]] = select i1 [[I17]], float [[I22]], float [[I16]]
+; CHECK-NEXT: [[I22:%.*]] = tail call noundef nofpclass(nan sub norm) float
@llvm.copysign.f32(float noundef 0.000000e+00, float noundef [[I21]])
+; CHECK-NEXT: [[I23:%.*]] = select i1 [[I17]], float [[I22]], float [[I13]]
; CHECK-NEXT: [[I24:%.*]] = fcmp oeq float [[ARG]], 1.000000e+00
; CHECK-NEXT: [[I25:%.*]] = fcmp oeq float [[ARG1]], 0.000000e+00
; CHECK-NEXT: [[I26:%.*]] = or i1 [[I24]], [[I25]]
@@ -977,8 +925,7 @@ define nofpclass(inf) float
@ret_nofpclass_inf__select_nofpclass_call_only_inf(i
; CHECK-LABEL: define nofpclass(inf) float
@ret_nofpclass_inf__select_nofpclass_call_only_inf
; CHECK-SAME: (i1 [[COND:%.*]], float [[Y:%.*]]) {
; CHECK-NEXT: [[MUST_BE_INF:%.*]] = call nofpclass(nan zero sub norm) float
@extern()
-; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[COND]], float [[MUST_BE_INF]],
float [[Y]]
-; CHECK-NEXT: ret float [[SELECT]]
+; CHECK-NEXT: ret float [[Y]]
;
%must.be.inf = call nofpclass(nan norm zero sub) float @extern()
%select = select i1 %cond, float %must.be.inf, float %y
@@ -989,7 +936,7 @@ define nofpclass(pinf) float
@ret_nofpclass_pinf__nofpclass_call_only_inf(i1 %co
; CHECK-LABEL: define nofpclass(pinf) float
@ret_nofpclass_pinf__nofpclass_call_only_inf
; CHECK-SAME: (i1 [[COND:%.*]], float [[Y:%.*]]) {
; CHECK-NEXT: [[MUST_BE_INF:%.*]] = call nofpclass(nan zero sub norm) float
@extern()
-; CHECK-NEXT: ret float [[MUST_BE_INF]]
+; CHECK-NEXT: ret float 0xFFF0000000000000
;
%must.be.inf = call nofpclass(nan norm zero sub) float @extern()
ret float %must.be.inf
@@ -999,7 +946,7 @@ define nofpclass(ninf) float
@ret_nofpclass_ninf__nofpclass_call_only_inf(i1 %co
; CHECK-LABEL: define nofpclass(ninf) float
@ret_nofpclass_ninf__nofpclass_call_only_inf
; CHECK-SAME: (i1 [[COND:%.*]], float [[Y:%.*]]) {
; CHECK-NEXT: [[MUST_BE_INF:%.*]] = call nofpclass(nan zero sub norm) float
@extern()
-; CHECK-NEXT: ret float [[MUST_BE_INF]]
+; CHECK-NEXT: ret float 0x7FF0000000000000
;
%must.be.inf = call nofpclass(nan norm zero sub) float @extern()
ret float %must.be.inf
@@ -1009,7 +956,7 @@ define nofpclass(nzero) float
@ret_nofpclass_nzero__nofpclass_call_only_zero(i1
; CHECK-LABEL: define nofpclass(nzero) float
@ret_nofpclass_nzero__nofpclass_call_only_zero
; CHECK-SAME: (i1 [[COND:%.*]], float [[Y:%.*]]) {
; CHECK-NEXT: [[MUST_BE_ZERO:%.*]] = call nofpclass(nan inf sub norm) float
@extern()
-; CHECK-NEXT: ret float [[MUST_BE_ZERO]]
+; CHECK-NEXT: ret float 0.000000e+00
;
%must.be.zero = call nofpclass(nan sub norm inf) float @extern()
ret float %must.be.zero
@@ -1019,7 +966,7 @@ define nofpclass(pzero) float
@ret_nofpclass_pzero__nofpclass_call_only_zero(i1
; CHECK-LABEL: define nofpclass(pzero) float
@ret_nofpclass_pzero__nofpclass_call_only_zero
; CHECK-SAME: (i1 [[COND:%.*]], float [[Y:%.*]]) {
; CHECK-NEXT: [[MUST_BE_ZERO:%.*]] = call nofpclass(nan inf sub norm) float
@extern()
-; CHECK-NEXT: ret float [[MUST_BE_ZERO]]
+; CHECK-NEXT: ret float -0.000000e+00
;
%must.be.zero = call nofpclass(nan sub norm inf) float @extern()
ret float %must.be.zero
@@ -1133,8 +1080,7 @@ define nofpclass(inf) float
@ret_nofpclass_inf__recursive_phi_0(i1 %cond0, float
; CHECK-NEXT: [[LOOP_COND:%.*]] = call i1 @loop.cond()
; CHECK-NEXT: br i1 [[LOOP_COND]], label [[RET]], label [[LOOP]]
; CHECK: ret:
-; CHECK-NEXT: [[PHI_RET:%.*]] = phi float [ 0.000000e+00, [[ENTRY:%.*]] ],
[ 0x7FF0000000000000, [[LOOP]] ]
-; CHECK-NEXT: ret float [[PHI_RET]]
+; CHECK-NEXT: ret float 0.000000e+00
;
entry:
br i1 %cond0, label %loop, label %ret
@@ -1159,7 +1105,7 @@ define nofpclass(inf) float
@ret_nofpclass_inf__recursive_phi_1(i1 %cond0, float
; CHECK-NEXT: [[LOOP_COND:%.*]] = call i1 @loop.cond()
; CHECK-NEXT: br i1 [[LOOP_COND]], label [[RET]], label [[LOOP]]
; CHECK: ret:
-; CHECK-NEXT: ret float 0x7FF0000000000000
+; CHECK-NEXT: ret float poison
;
entry:
br i1 %cond0, label %loop, label %ret
@@ -1211,8 +1157,7 @@ ret:
define nofpclass(inf) float
@ret_nofpclass_inf__arithmetic_fence_select_pinf_rhs(i1 %cond, float %x) {
; CHECK-LABEL: define nofpclass(inf) float
@ret_nofpclass_inf__arithmetic_fence_select_pinf_rhs
; CHECK-SAME: (i1 [[COND:%.*]], float [[X:%.*]]) {
-; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[COND]], float [[X]], float
0x7FF0000000000000
-; CHECK-NEXT: [[FENCE:%.*]] = call float @llvm.arithmetic.fence.f32(float
[[SELECT]])
+; CHECK-NEXT: [[FENCE:%.*]] = call float @llvm.arithmetic.fence.f32(float
[[X]])
; CHECK-NEXT: ret float [[FENCE]]
;
%select = select i1 %cond, float %x, float 0x7FF0000000000000
>From 6407fe78971dacfecefeaacfa99d24b94601463c Mon Sep 17 00:00:00 2001
From: Matt Arsenault <matthew.arsena...@amd.com>
Date: Mon, 29 Jan 2024 14:20:42 +0530
Subject: [PATCH 2/4] Enable only under off-by-default flag for now
---
llvm/lib/Transforms/InstCombine/InstructionCombining.cpp | 9 +++++++++
.../Transforms/InstCombine/simplify-demanded-fpclass.ll | 2 +-
2 files changed, 10 insertions(+), 1 deletion(-)
diff --git a/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
b/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
index a45f9595a9907e..b9f7e38731b51f 100644
--- a/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
@@ -142,6 +142,12 @@ static cl::opt<unsigned>
MaxArraySize("instcombine-maxarray-size", cl::init(1024),
cl::desc("Maximum array size considered when doing a combine"));
+// TODO: Remove this option
+static cl::opt<bool> EnableSimplifyDemandedUseFPClass(
+ "instcombine-simplify-demanded-fp-class",
+ cl::desc("Enable demanded floating-point class optimizations"),
+ cl::init(false));
+
// FIXME: Remove this flag when it is no longer necessary to convert
// llvm.dbg.declare to avoid inaccurate debug info. Setting this to false
// increases variable availability at the cost of accuracy. Variables that
@@ -3093,6 +3099,9 @@ Instruction *InstCombinerImpl::visitFree(CallInst &FI,
Value *Op) {
}
Instruction *InstCombinerImpl::visitReturnInst(ReturnInst &RI) {
+ if (!EnableSimplifyDemandedUseFPClass)
+ return nullptr;
+
Value *RetVal = RI.getReturnValue();
if (!RetVal || !AttributeFuncs::isNoFPClassCompatibleType(RetVal->getType()))
return nullptr;
diff --git a/llvm/test/Transforms/InstCombine/simplify-demanded-fpclass.ll
b/llvm/test/Transforms/InstCombine/simplify-demanded-fpclass.ll
index 4f9396add2370b..9a90c97da90a1c 100644
--- a/llvm/test/Transforms/InstCombine/simplify-demanded-fpclass.ll
+++ b/llvm/test/Transforms/InstCombine/simplify-demanded-fpclass.ll
@@ -1,5 +1,5 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
UTC_ARGS: --version 2
-; RUN: opt -S -passes=instcombine < %s | FileCheck %s
+; RUN: opt -S -passes=instcombine -instcombine-simplify-demanded-fp-class < %s
| FileCheck %s
declare float @llvm.fabs.f32(float)
declare float @llvm.copysign.f32(float, float)
>From d2fa818e4a61646e7073be90a94a599503753668 Mon Sep 17 00:00:00 2001
From: Matt Arsenault <matthew.arsena...@amd.com>
Date: Thu, 8 Feb 2024 11:38:02 +0530
Subject: [PATCH 3/4] update_test_checks formatting change
---
llvm/test/Transforms/InstCombine/simplify-demanded-fpclass.ll | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/llvm/test/Transforms/InstCombine/simplify-demanded-fpclass.ll
b/llvm/test/Transforms/InstCombine/simplify-demanded-fpclass.ll
index 9a90c97da90a1c..dd9b71415bd6d9 100644
--- a/llvm/test/Transforms/InstCombine/simplify-demanded-fpclass.ll
+++ b/llvm/test/Transforms/InstCombine/simplify-demanded-fpclass.ll
@@ -1126,8 +1126,8 @@ define nofpclass(inf) float
@ret_nofpclass_inf__phi_switch_repeated_predecessor(
; CHECK-SAME: (i32 [[SWITCH:%.*]], float [[UNKNOWN:%.*]]) {
; CHECK-NEXT: entry:
; CHECK-NEXT: switch i32 [[SWITCH]], label [[RET:%.*]] [
-; CHECK-NEXT: i32 0, label [[LOOP:%.*]]
-; CHECK-NEXT: i32 1, label [[LOOP]]
+; CHECK-NEXT: i32 0, label [[LOOP:%.*]]
+; CHECK-NEXT: i32 1, label [[LOOP]]
; CHECK-NEXT: ]
; CHECK: loop:
; CHECK-NEXT: [[PHI_LOOP:%.*]] = phi float [ 0x7FF0000000000000,
[[ENTRY:%.*]] ], [ 0x7FF0000000000000, [[ENTRY]] ], [ [[UNKNOWN]], [[LOOP]] ]
>From 04a5371c3f806209225a2d1bf0e8f6b304934daf Mon Sep 17 00:00:00 2001
From: Matt Arsenault <matthew.arsena...@amd.com>
Date: Thu, 8 Feb 2024 13:29:57 +0530
Subject: [PATCH 4/4] Update clang test since it's now off by default
---
clang/test/Headers/__clang_hip_math.hip | 56 ++++++-------------------
1 file changed, 12 insertions(+), 44 deletions(-)
diff --git a/clang/test/Headers/__clang_hip_math.hip
b/clang/test/Headers/__clang_hip_math.hip
index 37099de74fb8ec..e9a9cb4bb3c746 100644
--- a/clang/test/Headers/__clang_hip_math.hip
+++ b/clang/test/Headers/__clang_hip_math.hip
@@ -2557,65 +2557,33 @@ extern "C" __device__ double test_nan(const char *tag) {
return nan(tag);
}
-// DEFAULT-LABEL: @test_nanf_emptystr(
-// DEFAULT-NEXT: entry:
-// DEFAULT-NEXT: ret float 0x7FF8000000000000
-//
-// FINITEONLY-LABEL: @test_nanf_emptystr(
-// FINITEONLY-NEXT: entry:
-// FINITEONLY-NEXT: ret float poison
-//
-// APPROX-LABEL: @test_nanf_emptystr(
-// APPROX-NEXT: entry:
-// APPROX-NEXT: ret float 0x7FF8000000000000
+// CHECK-LABEL: @test_nanf_emptystr(
+// CHECK-NEXT: entry:
+// CHECK-NEXT: ret float 0x7FF8000000000000
//
extern "C" __device__ float test_nanf_emptystr() {
return nanf("");
}
-// DEFAULT-LABEL: @test_nan_emptystr(
-// DEFAULT-NEXT: entry:
-// DEFAULT-NEXT: ret double 0x7FF8000000000000
-//
-// FINITEONLY-LABEL: @test_nan_emptystr(
-// FINITEONLY-NEXT: entry:
-// FINITEONLY-NEXT: ret double poison
-//
-// APPROX-LABEL: @test_nan_emptystr(
-// APPROX-NEXT: entry:
-// APPROX-NEXT: ret double 0x7FF8000000000000
+// CHECK-LABEL: @test_nan_emptystr(
+// CHECK-NEXT: entry:
+// CHECK-NEXT: ret double 0x7FF8000000000000
//
extern "C" __device__ double test_nan_emptystr() {
return nan("");
}
-// DEFAULT-LABEL: @test_nanf_fill(
-// DEFAULT-NEXT: entry:
-// DEFAULT-NEXT: ret float 0x7FF8000000000000
-//
-// FINITEONLY-LABEL: @test_nanf_fill(
-// FINITEONLY-NEXT: entry:
-// FINITEONLY-NEXT: ret float poison
-//
-// APPROX-LABEL: @test_nanf_fill(
-// APPROX-NEXT: entry:
-// APPROX-NEXT: ret float 0x7FF8000000000000
+// CHECK-LABEL: @test_nanf_fill(
+// CHECK-NEXT: entry:
+// CHECK-NEXT: ret float 0x7FF8000000000000
//
extern "C" __device__ float test_nanf_fill() {
return nanf("0x456");
}
-// DEFAULT-LABEL: @test_nan_fill(
-// DEFAULT-NEXT: entry:
-// DEFAULT-NEXT: ret double 0x7FF8000000000000
-//
-// FINITEONLY-LABEL: @test_nan_fill(
-// FINITEONLY-NEXT: entry:
-// FINITEONLY-NEXT: ret double poison
-//
-// APPROX-LABEL: @test_nan_fill(
-// APPROX-NEXT: entry:
-// APPROX-NEXT: ret double 0x7FF8000000000000
+// CHECK-LABEL: @test_nan_fill(
+// CHECK-NEXT: entry:
+// CHECK-NEXT: ret double 0x7FF8000000000000
//
extern "C" __device__ double test_nan_fill() {
return nan("0x123");
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