1
0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2024-11-25 04:02:41 +01:00

[IPConstProp] Remove and move tests to SCCP.

As far as I know, ipconstprop has not been used in years and ipsccp has
been used instead. This has the potential for confusion and sometimes
leads people to spend time finding & reporting bugs as well as
updating it to work with the latest API changes.

This patch moves the tests over to SCCP. There's one functional difference
I am aware of: ipconstprop propagates for each call-site individually, so
for functions that are called with different constant arguments it can sometimes
produce better results than ipsccp (at much higher compile-time cost).But
IPSCCP can be thought to do so as well for internal functions and as mentioned
earlier, the pass seems unused in practice (and there are no plans on working
towards enabling it anytime).

Also discussed on llvm-dev:
http://lists.llvm.org/pipermail/llvm-dev/2020-July/143773.html

Reviewed By: jdoerfert

Differential Revision: https://reviews.llvm.org/D84447
This commit is contained in:
Florian Hahn 2020-07-30 10:15:47 +01:00
parent 529210d2c9
commit ce3655671a
29 changed files with 43 additions and 424 deletions

View File

@ -32,7 +32,6 @@ func (pm PassManager) AddFunctionAttrsPass() { C.LLVMAddFunctionAttrsPas
func (pm PassManager) AddFunctionInliningPass() { C.LLVMAddFunctionInliningPass(pm.C) }
func (pm PassManager) AddGlobalDCEPass() { C.LLVMAddGlobalDCEPass(pm.C) }
func (pm PassManager) AddGlobalOptimizerPass() { C.LLVMAddGlobalOptimizerPass(pm.C) }
func (pm PassManager) AddIPConstantPropagationPass() { C.LLVMAddIPConstantPropagationPass(pm.C) }
func (pm PassManager) AddPruneEHPass() { C.LLVMAddPruneEHPass(pm.C) }
func (pm PassManager) AddIPSCCPPass() { C.LLVMAddIPSCCPPass(pm.C) }
func (pm PassManager) AddInternalizePass(allButMain bool) {

View File

@ -73,12 +73,6 @@ CAMLprim value llvm_add_global_optimizer(LLVMPassManagerRef PM) {
return Val_unit;
}
/* [`Module] Llvm.PassManager.t -> unit */
CAMLprim value llvm_add_ip_constant_propagation(LLVMPassManagerRef PM) {
LLVMAddIPConstantPropagationPass(PM);
return Val_unit;
}
/* [`Module] Llvm.PassManager.t -> unit */
CAMLprim value llvm_add_prune_eh(LLVMPassManagerRef PM) {
LLVMAddPruneEHPass(PM);

View File

@ -56,11 +56,6 @@ external add_global_optimizer
: [ `Module ] Llvm.PassManager.t -> unit
= "llvm_add_global_optimizer"
(** See the [llvm::createIPConstantPropagationPass] function. *)
external add_ipc_propagation
: [ `Module ] Llvm.PassManager.t -> unit
= "llvm_add_ip_constant_propagation"
(** See the [llvm::createPruneEHPass] function. *)
external add_prune_eh
: [ `Module ] Llvm.PassManager.t -> unit

View File

@ -676,15 +676,6 @@ This pass loops over all of the functions in the input module, looking for a
main function. If a main function is found, all other functions and all global
variables with initializers are marked as internal.
``-ipconstprop``: Interprocedural constant propagation
------------------------------------------------------
This pass implements an *extremely* simple interprocedural constant propagation
pass. It could certainly be improved in many different ways, like using a
worklist. This pass makes arguments dead, but does not remove them. The
existing dead argument elimination pass should be run after this to clean up
the mess.
``-ipsccp``: Interprocedural Sparse Conditional Constant Propagation
--------------------------------------------------------------------

View File

@ -57,9 +57,6 @@ void LLVMAddGlobalDCEPass(LLVMPassManagerRef PM);
/** See llvm::createGlobalOptimizerPass function. */
void LLVMAddGlobalOptimizerPass(LLVMPassManagerRef PM);
/** See llvm::createIPConstantPropagationPass function. */
void LLVMAddIPConstantPropagationPass(LLVMPassManagerRef PM);
/** See llvm::createPruneEHPass function. */
void LLVMAddPruneEHPass(LLVMPassManagerRef PM);

View File

@ -179,7 +179,6 @@ void initializeGuardWideningLegacyPassPass(PassRegistry&);
void initializeHardwareLoopsPass(PassRegistry&);
void initializeHotColdSplittingLegacyPassPass(PassRegistry&);
void initializeHWAddressSanitizerLegacyPassPass(PassRegistry &);
void initializeIPCPPass(PassRegistry&);
void initializeIPSCCPLegacyPassPass(PassRegistry&);
void initializeIRCELegacyPassPass(PassRegistry&);
void initializeIRTranslatorPass(PassRegistry&);

View File

@ -116,7 +116,6 @@ namespace {
(void) llvm::createGlobalsAAWrapperPass();
(void) llvm::createGuardWideningPass();
(void) llvm::createLoopGuardWideningPass();
(void) llvm::createIPConstantPropagationPass();
(void) llvm::createIPSCCPPass();
(void) llvm::createInductiveRangeCheckEliminationPass();
(void) llvm::createIndVarSimplifyPass();

View File

@ -155,12 +155,6 @@ Pass *createArgumentPromotionPass(unsigned maxElements = 3);
/// createOpenMPOptLegacyPass - OpenMP specific optimizations.
Pass *createOpenMPOptLegacyPass();
//===----------------------------------------------------------------------===//
/// createIPConstantPropagationPass - This pass propagates constants from call
/// sites into the bodies of functions.
///
ModulePass *createIPConstantPropagationPass();
//===----------------------------------------------------------------------===//
/// createIPSCCPPass - This pass propagates constants from call sites into the
/// bodies of functions, and keeps track of whether basic blocks are executable

View File

@ -18,7 +18,6 @@ add_llvm_component_library(LLVMipo
GlobalOpt.cpp
GlobalSplit.cpp
HotColdSplitting.cpp
IPConstantPropagation.cpp
IPO.cpp
InferFunctionAttrs.cpp
InlineSimple.cpp

View File

@ -1,308 +0,0 @@
//===-- IPConstantPropagation.cpp - Propagate constants through calls -----===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// This pass implements an _extremely_ simple interprocedural constant
// propagation pass. It could certainly be improved in many different ways,
// like using a worklist. This pass makes arguments dead, but does not remove
// them. The existing dead argument elimination pass should be run after this
// to clean up the mess.
//
//===----------------------------------------------------------------------===//
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/Analysis/ValueTracking.h"
#include "llvm/IR/AbstractCallSite.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/Instructions.h"
#include "llvm/IR/Module.h"
#include "llvm/InitializePasses.h"
#include "llvm/Pass.h"
#include "llvm/Transforms/IPO.h"
using namespace llvm;
#define DEBUG_TYPE "ipconstprop"
STATISTIC(NumArgumentsProped, "Number of args turned into constants");
STATISTIC(NumReturnValProped, "Number of return values turned into constants");
namespace {
/// IPCP - The interprocedural constant propagation pass
///
struct IPCP : public ModulePass {
static char ID; // Pass identification, replacement for typeid
IPCP() : ModulePass(ID) {
initializeIPCPPass(*PassRegistry::getPassRegistry());
}
bool runOnModule(Module &M) override;
};
}
/// PropagateConstantsIntoArguments - Look at all uses of the specified
/// function. If all uses are direct call sites, and all pass a particular
/// constant in for an argument, propagate that constant in as the argument.
///
static bool PropagateConstantsIntoArguments(Function &F) {
if (F.arg_empty() || F.use_empty()) return false; // No arguments? Early exit.
// For each argument, keep track of its constant value and whether it is a
// constant or not. The bool is driven to true when found to be non-constant.
SmallVector<PointerIntPair<Constant *, 1, bool>, 16> ArgumentConstants;
ArgumentConstants.resize(F.arg_size());
unsigned NumNonconstant = 0;
for (Use &U : F.uses()) {
User *UR = U.getUser();
// Ignore blockaddress uses.
if (isa<BlockAddress>(UR)) continue;
// If no abstract call site was created we did not understand the use, bail.
AbstractCallSite ACS(&U);
if (!ACS)
return false;
// Mismatched argument count is undefined behavior. Simply bail out to avoid
// handling of such situations below (avoiding asserts/crashes).
unsigned NumActualArgs = ACS.getNumArgOperands();
if (F.isVarArg() ? ArgumentConstants.size() > NumActualArgs
: ArgumentConstants.size() != NumActualArgs)
return false;
// Check out all of the potentially constant arguments. Note that we don't
// inspect varargs here.
Function::arg_iterator Arg = F.arg_begin();
for (unsigned i = 0, e = ArgumentConstants.size(); i != e; ++i, ++Arg) {
// If this argument is known non-constant, ignore it.
if (ArgumentConstants[i].getInt())
continue;
Value *V = ACS.getCallArgOperand(i);
Constant *C = dyn_cast_or_null<Constant>(V);
// Mismatched argument type is undefined behavior. Simply bail out to avoid
// handling of such situations below (avoiding asserts/crashes).
if (C && Arg->getType() != C->getType())
return false;
// We can only propagate thread independent values through callbacks.
// This is different to direct/indirect call sites because for them we
// know the thread executing the caller and callee is the same. For
// callbacks this is not guaranteed, thus a thread dependent value could
// be different for the caller and callee, making it invalid to propagate.
if (C && ACS.isCallbackCall() && C->isThreadDependent()) {
// Argument became non-constant. If all arguments are non-constant now,
// give up on this function.
if (++NumNonconstant == ArgumentConstants.size())
return false;
ArgumentConstants[i].setInt(true);
continue;
}
if (C && ArgumentConstants[i].getPointer() == nullptr) {
ArgumentConstants[i].setPointer(C); // First constant seen.
} else if (C && ArgumentConstants[i].getPointer() == C) {
// Still the constant value we think it is.
} else if (V == &*Arg) {
// Ignore recursive calls passing argument down.
} else {
// Argument became non-constant. If all arguments are non-constant now,
// give up on this function.
if (++NumNonconstant == ArgumentConstants.size())
return false;
ArgumentConstants[i].setInt(true);
}
}
}
// If we got to this point, there is a constant argument!
assert(NumNonconstant != ArgumentConstants.size());
bool MadeChange = false;
Function::arg_iterator AI = F.arg_begin();
for (unsigned i = 0, e = ArgumentConstants.size(); i != e; ++i, ++AI) {
// Do we have a constant argument?
if (ArgumentConstants[i].getInt() || AI->use_empty() ||
(AI->hasByValAttr() && !F.onlyReadsMemory()))
continue;
Value *V = ArgumentConstants[i].getPointer();
if (!V) V = UndefValue::get(AI->getType());
AI->replaceAllUsesWith(V);
++NumArgumentsProped;
MadeChange = true;
}
return MadeChange;
}
// Check to see if this function returns one or more constants. If so, replace
// all callers that use those return values with the constant value. This will
// leave in the actual return values and instructions, but deadargelim will
// clean that up.
//
// Additionally if a function always returns one of its arguments directly,
// callers will be updated to use the value they pass in directly instead of
// using the return value.
static bool PropagateConstantReturn(Function &F) {
if (F.getReturnType()->isVoidTy())
return false; // No return value.
// We can infer and propagate the return value only when we know that the
// definition we'll get at link time is *exactly* the definition we see now.
// For more details, see GlobalValue::mayBeDerefined.
if (!F.isDefinitionExact())
return false;
// Don't touch naked functions. The may contain asm returning
// value we don't see, so we may end up interprocedurally propagating
// the return value incorrectly.
if (F.hasFnAttribute(Attribute::Naked))
return false;
// Check to see if this function returns a constant.
SmallVector<Value *,4> RetVals;
StructType *STy = dyn_cast<StructType>(F.getReturnType());
if (STy)
for (unsigned i = 0, e = STy->getNumElements(); i < e; ++i)
RetVals.push_back(UndefValue::get(STy->getElementType(i)));
else
RetVals.push_back(UndefValue::get(F.getReturnType()));
unsigned NumNonConstant = 0;
for (BasicBlock &BB : F)
if (ReturnInst *RI = dyn_cast<ReturnInst>(BB.getTerminator())) {
for (unsigned i = 0, e = RetVals.size(); i != e; ++i) {
// Already found conflicting return values?
Value *RV = RetVals[i];
if (!RV)
continue;
// Find the returned value
Value *V;
if (!STy)
V = RI->getOperand(0);
else
V = FindInsertedValue(RI->getOperand(0), i);
if (V) {
// Ignore undefs, we can change them into anything
if (isa<UndefValue>(V))
continue;
// Try to see if all the rets return the same constant or argument.
if (isa<Constant>(V) || isa<Argument>(V)) {
if (isa<UndefValue>(RV)) {
// No value found yet? Try the current one.
RetVals[i] = V;
continue;
}
// Returning the same value? Good.
if (RV == V)
continue;
}
}
// Different or no known return value? Don't propagate this return
// value.
RetVals[i] = nullptr;
// All values non-constant? Stop looking.
if (++NumNonConstant == RetVals.size())
return false;
}
}
// If we got here, the function returns at least one constant value. Loop
// over all users, replacing any uses of the return value with the returned
// constant.
bool MadeChange = false;
for (Use &U : F.uses()) {
CallBase *CB = dyn_cast<CallBase>(U.getUser());
// Not a call instruction or a call instruction that's not calling F
// directly?
if (!CB || !CB->isCallee(&U))
continue;
// Call result not used?
if (CB->use_empty())
continue;
MadeChange = true;
if (!STy) {
Value* New = RetVals[0];
if (Argument *A = dyn_cast<Argument>(New))
// Was an argument returned? Then find the corresponding argument in
// the call instruction and use that.
New = CB->getArgOperand(A->getArgNo());
CB->replaceAllUsesWith(New);
continue;
}
for (auto I = CB->user_begin(), E = CB->user_end(); I != E;) {
Instruction *Ins = cast<Instruction>(*I);
// Increment now, so we can remove the use
++I;
// Find the index of the retval to replace with
int index = -1;
if (ExtractValueInst *EV = dyn_cast<ExtractValueInst>(Ins))
if (EV->getNumIndices() == 1)
index = *EV->idx_begin();
// If this use uses a specific return value, and we have a replacement,
// replace it.
if (index != -1) {
Value *New = RetVals[index];
if (New) {
if (Argument *A = dyn_cast<Argument>(New))
// Was an argument returned? Then find the corresponding argument in
// the call instruction and use that.
New = CB->getArgOperand(A->getArgNo());
Ins->replaceAllUsesWith(New);
Ins->eraseFromParent();
}
}
}
}
if (MadeChange) ++NumReturnValProped;
return MadeChange;
}
char IPCP::ID = 0;
INITIALIZE_PASS(IPCP, "ipconstprop",
"Interprocedural constant propagation", false, false)
ModulePass *llvm::createIPConstantPropagationPass() { return new IPCP(); }
bool IPCP::runOnModule(Module &M) {
if (skipModule(M))
return false;
bool Changed = false;
bool LocalChange = true;
// FIXME: instead of using smart algorithms, we just iterate until we stop
// making changes.
while (LocalChange) {
LocalChange = false;
for (Function &F : M)
if (!F.isDeclaration()) {
// Delete any klingons.
F.removeDeadConstantUsers();
if (F.hasLocalLinkage())
LocalChange |= PropagateConstantsIntoArguments(F);
Changed |= PropagateConstantReturn(F);
}
Changed |= LocalChange;
}
return Changed;
}

View File

@ -35,7 +35,6 @@ void llvm::initializeIPO(PassRegistry &Registry) {
initializeGlobalOptLegacyPassPass(Registry);
initializeGlobalSplitPass(Registry);
initializeHotColdSplittingLegacyPassPass(Registry);
initializeIPCPPass(Registry);
initializeAlwaysInlinerLegacyPassPass(Registry);
initializeSimpleInlinerPass(Registry);
initializeInferFunctionAttrsLegacyPassPass(Registry);
@ -104,10 +103,6 @@ void LLVMAddGlobalOptimizerPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createGlobalOptimizerPass());
}
void LLVMAddIPConstantPropagationPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createIPConstantPropagationPass());
}
void LLVMAddPruneEHPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createPruneEHPass());
}

View File

@ -1,34 +0,0 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -ipconstprop -S | FileCheck %s
; See PR26774
define i32 @baz() {
; CHECK-LABEL: @baz(
; CHECK-NEXT: ret i32 10
;
ret i32 10
}
; We can const-prop @baz's return value *into* @foo, but cannot
; constprop @foo's return value into bar.
define linkonce_odr i32 @foo() {
; CHECK-LABEL: @foo(
; CHECK-NEXT: [[VAL:%.*]] = call i32 @baz()
; CHECK-NEXT: ret i32 10
;
%val = call i32 @baz()
ret i32 %val
}
define i32 @bar() {
; CHECK-LABEL: @bar(
; CHECK-NEXT: [[VAL:%.*]] = call i32 @foo()
; CHECK-NEXT: ret i32 [[VAL]]
;
%val = call i32 @foo()
ret i32 %val
}

View File

@ -1,5 +1,5 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -ipconstprop -S | FileCheck %s
; RUN: opt < %s -ipsccp -S | FileCheck %s
; Should not propagate the result of a weak function.
; PR2411

View File

@ -1,5 +1,5 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -S -ipconstprop | FileCheck %s
; RUN: opt < %s -S -ipsccp | FileCheck %s
%struct.wobble = type { i32 }
%struct.zot = type { %struct.wobble, %struct.wobble, %struct.wobble }
@ -19,7 +19,7 @@ define void @baz(<8 x i32> %arg) local_unnamed_addr {
; CHECK-LABEL: @baz(
; CHECK-NEXT: bb:
; CHECK-NEXT: [[TMP:%.*]] = call [[STRUCT_ZOT:%.*]] @widget(<8 x i32> [[ARG:%.*]])
; CHECK-NEXT: [[TMP1:%.*]] = extractvalue [[STRUCT_ZOT]] %tmp, 0, 0
; CHECK-NEXT: [[TMP1:%.*]] = extractvalue [[STRUCT_ZOT]] undef, 0, 0
; CHECK-NEXT: ret void
;
bb:

View File

@ -1,5 +1,5 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -ipconstprop -S -o - | FileCheck %s
; RUN: opt < %s -ipsccp -S -o - | FileCheck %s
; The original C source looked like this:
;
@ -53,7 +53,7 @@ define internal i16 @bar(i16 %p1, i16 %p2) {
define internal i16 @vararg_prop(i16 %p1, ...) {
; CHECK-LABEL: @vararg_prop(
; CHECK-NEXT: ret i16 7
; CHECK-NEXT: ret i16 undef
;
ret i16 %p1
}

View File

@ -1,5 +1,5 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -ipconstprop -S -o - | FileCheck %s
; RUN: opt < %s -ipsccp -S -o - | FileCheck %s
; This test is just to verify that we do not crash/assert due to mismatch in
; argument type between the caller and callee.

View File

@ -1,8 +1,12 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -ipsccp -S | FileCheck %s
; See PR26774
define i32 @baz() {
; CHECK-LABEL: @baz(
; CHECK-NEXT: ret i32 10
;
ret i32 10
}
@ -11,8 +15,9 @@ define i32 @baz() {
define linkonce_odr i32 @foo() {
; CHECK-LABEL: @foo(
; CHECK-NEXT: %val = call i32 @baz()
; CHECK-NEXT: [[VAL:%.*]] = call i32 @baz()
; CHECK-NEXT: ret i32 10
;
%val = call i32 @baz()
ret i32 %val
@ -20,8 +25,9 @@ define linkonce_odr i32 @foo() {
define i32 @bar() {
; CHECK-LABEL: @bar(
; CHECK-NEXT: %val = call i32 @foo()
; CHECK-NEXT: ret i32 %val
; CHECK-NEXT: [[VAL:%.*]] = call i32 @foo()
; CHECK-NEXT: ret i32 [[VAL]]
;
%val = call i32 @foo()
ret i32 %val

View File

@ -1,5 +1,5 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -ipconstprop -disable-output
; RUN: opt < %s -ipsccp -disable-output
define internal void @foo(i32 %X) {
call void @foo( i32 %X )
ret void

View File

@ -1,5 +1,6 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -ipconstprop -S < %s | FileCheck %s
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-attributes
; RUN: opt -ipsccp -S %s | FileCheck %s
;
;
; /---------------------------------------|
; | /----------------------|----|
@ -38,7 +39,7 @@ target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
define internal i32 @cb0(i32 %zero) {
; CHECK-LABEL: @cb0(
; CHECK-NEXT: entry:
; CHECK-NEXT: ret i32 0
; CHECK-NEXT: ret i32 [[ZERO:%.*]]
;
entry:
ret i32 %zero

View File

@ -1,6 +1,5 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -ipsccp -S %s | FileCheck %s
; RUN: opt -ipconstprop -S %s | FileCheck %s
target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32"
target triple = "i686-pc-windows-msvc19.0.24215"

View File

@ -1,5 +1,5 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -ipconstprop < %s | FileCheck %s
; RUN: opt -S -ipsccp < %s | FileCheck %s
;
; void bar(int, float, double);
;
@ -53,7 +53,7 @@ define internal void @.omp_outlined.(i32* noalias %.global_tid., i32* noalias %.
; CHECK-NEXT: [[DOTOMP_UB:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[DOTOMP_STRIDE:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[DOTOMP_IS_LAST:%.*]] = alloca i32, align 4
; CHECK-NEXT: store i64 4617315517961601024, i64* [[Q_ADDR]], align 8
; CHECK-NEXT: store i64 [[Q:%.*]], i64* [[Q_ADDR]], align 8
; CHECK-NEXT: [[CONV:%.*]] = bitcast i64* [[Q_ADDR]] to double*
; CHECK-NEXT: [[TMP:%.*]] = load i32, i32* [[N:%.*]], align 4
; CHECK-NEXT: [[SUB3:%.*]] = add nsw i32 [[TMP]], -3

View File

@ -1,5 +1,5 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -ipconstprop -S < %s | FileCheck %s
; RUN: opt -ipsccp -S < %s | FileCheck %s
;
; #include <pthread.h>
;
@ -44,7 +44,7 @@ declare !callback !0 dso_local i32 @pthread_create(i64*, %union.pthread_attr_t*,
define internal i8* @foo(i8* %arg) {
; CHECK-LABEL: @foo(
; CHECK-NEXT: entry:
; CHECK-NEXT: ret i8* null
; CHECK-NEXT: ret i8* [[ARG:%.*]]
;
entry:
ret i8* %arg
@ -53,7 +53,7 @@ entry:
define internal i8* @bar(i8* %arg) {
; CHECK-LABEL: @bar(
; CHECK-NEXT: entry:
; CHECK-NEXT: ret i8* bitcast (i8** @GlobalVPtr to i8*)
; CHECK-NEXT: ret i8* [[ARG:%.*]]
;
entry:
ret i8* %arg

View File

@ -1,5 +1,5 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -ipconstprop -deadargelim -S | FileCheck %s
; RUN: opt < %s -ipsccp -deadargelim -S | FileCheck %s
; CHECK-NOT: %X

View File

@ -1,5 +1,5 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -ipconstprop -S | FileCheck %s
; RUN: opt < %s -ipsccp -S | FileCheck %s
;; This function returns its second argument on all return statements
define internal i32* @incdec(i1 %C, i32* %V) {
@ -49,11 +49,13 @@ define void @caller(i1 %C) personality i32 (...)* @__gxx_personality_v0 {
; CHECK-NEXT: [[Q:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[W:%.*]] = call i32* @incdec(i1 [[C:%.*]], i32* [[Q]])
; CHECK-NEXT: [[S1:%.*]] = call { i32, i32 } @foo(i32 1, i32 2)
; CHECK-NEXT: [[X1:%.*]] = extractvalue { i32, i32 } [[S1]], 0
; CHECK-NEXT: [[S2:%.*]] = invoke { i32, i32 } @foo(i32 3, i32 4)
; CHECK-NEXT: to label [[OK:%.*]] unwind label [[LPAD:%.*]]
; CHECK: OK:
; CHECK-NEXT: [[Z:%.*]] = add i32 1, 3
; CHECK-NEXT: store i32 [[Z]], i32* [[Q]], align 4
; CHECK-NEXT: [[X2:%.*]] = extractvalue { i32, i32 } [[S2]], 0
; CHECK-NEXT: [[Z:%.*]] = add i32 [[X1]], [[X2]]
; CHECK-NEXT: store i32 [[Z]], i32* [[W]], align 4
; CHECK-NEXT: br label [[RET:%.*]]
; CHECK: LPAD:
; CHECK-NEXT: [[EXN:%.*]] = landingpad { i8*, i32 }

View File

@ -1,13 +1,13 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -ipconstprop -instcombine -S | FileCheck %s
; RUN: opt < %s -ipsccp -instcombine -S | FileCheck %s
define internal i32 @foo(i1 %C) {
; CHECK-LABEL: @foo(
; CHECK-NEXT: br i1 [[C:%.*]], label [[T:%.*]], label [[F:%.*]]
; CHECK: T:
; CHECK-NEXT: ret i32 52
; CHECK-NEXT: ret i32 undef
; CHECK: F:
; CHECK-NEXT: ret i32 52
; CHECK-NEXT: ret i32 undef
;
br i1 %C, label %T, label %F

View File

@ -1,5 +1,5 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -ipconstprop -S | FileCheck %s
; RUN: opt < %s -ipsccp -S | FileCheck %s
%0 = type { i32, i32 }
@ -7,13 +7,9 @@ define internal %0 @foo(i1 %Q) {
; CHECK-LABEL: @foo(
; CHECK-NEXT: br i1 [[Q:%.*]], label [[T:%.*]], label [[F:%.*]]
; CHECK: T:
; CHECK-NEXT: [[MRV:%.*]] = insertvalue [[TMP0:%.*]] undef, i32 21, 0
; CHECK-NEXT: [[MRV1:%.*]] = insertvalue [[TMP0]] %mrv, i32 22, 1
; CHECK-NEXT: ret [[TMP0]] %mrv1
; CHECK-NEXT: ret [[TMP0:%.*]] { i32 21, i32 22 }
; CHECK: F:
; CHECK-NEXT: [[MRV2:%.*]] = insertvalue [[TMP0]] undef, i32 21, 0
; CHECK-NEXT: [[MRV3:%.*]] = insertvalue [[TMP0]] %mrv2, i32 23, 1
; CHECK-NEXT: ret [[TMP0]] %mrv3
; CHECK-NEXT: ret [[TMP0]] { i32 21, i32 23 }
;
br i1 %Q, label %T, label %F
@ -30,14 +26,11 @@ F: ; preds = %0
define internal %0 @bar(i1 %Q) {
; CHECK-LABEL: @bar(
; CHECK-NEXT: [[A:%.*]] = insertvalue [[TMP0:%.*]] undef, i32 21, 0
; CHECK-NEXT: br i1 [[Q:%.*]], label [[T:%.*]], label [[F:%.*]]
; CHECK: T:
; CHECK-NEXT: [[B:%.*]] = insertvalue [[TMP0]] %A, i32 22, 1
; CHECK-NEXT: ret [[TMP0]] %B
; CHECK-NEXT: ret [[TMP0:%.*]] { i32 21, i32 22 }
; CHECK: F:
; CHECK-NEXT: [[C:%.*]] = insertvalue [[TMP0]] %A, i32 23, 1
; CHECK-NEXT: ret [[TMP0]] %C
; CHECK-NEXT: ret [[TMP0]] { i32 21, i32 23 }
;
%A = insertvalue %0 undef, i32 21, 0
br i1 %Q, label %T, label %F
@ -57,7 +50,6 @@ define %0 @caller(i1 %Q) {
; CHECK-NEXT: [[B:%.*]] = extractvalue [[TMP0]] %X, 1
; CHECK-NEXT: [[Y:%.*]] = call [[TMP0]] @bar(i1 [[Q]])
; CHECK-NEXT: [[D:%.*]] = extractvalue [[TMP0]] %Y, 1
; CHECK-NEXT: [[M:%.*]] = add i32 21, 21
; CHECK-NEXT: [[N:%.*]] = add i32 [[B]], [[D]]
; CHECK-NEXT: ret [[TMP0]] %X
;

View File

@ -1,5 +1,5 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -ipconstprop -S < %s | FileCheck %s
; RUN: opt -ipsccp -S < %s | FileCheck %s
;
; #include <threads.h>
; thread_local int gtl = 0;
@ -24,7 +24,7 @@ define internal i32 @callee(i32* %thread_local_ptr, i32* %shared_ptr) {
; CHECK-LABEL: @callee(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP:%.*]] = load i32, i32* [[THREAD_LOCAL_PTR:%.*]], align 4
; CHECK-NEXT: [[TMP1:%.*]] = load i32, i32* @gsh, align 4
; CHECK-NEXT: [[TMP1:%.*]] = load i32, i32* [[SHARED_PTR:%.*]], align 4
; CHECK-NEXT: [[ADD:%.*]] = add nsw i32 [[TMP]], [[TMP1]]
; CHECK-NEXT: ret i32 [[ADD]]
;

View File

@ -70,7 +70,7 @@ dis2="$llvm2/Debug/bin/llvm-dis"
opt1="$llvm1/Debug/bin/opt"
opt2="$llvm2/Debug/bin/opt"
all_switches="-verify -lowersetjmp -simplifycfg -mem2reg -globalopt -globaldce -ipconstprop -deadargelim -instcombine -simplifycfg -prune-eh -inline -simplify-libcalls -argpromotion -tailduplicate -simplifycfg -sroa -instcombine -predsimplify -condprop -tailcallelim -simplifycfg -reassociate -licm -loop-unswitch -instcombine -indvars -loop-unroll -instcombine -load-vn -gcse -sccp -instcombine -condprop -dse -dce -simplifycfg -deadtypeelim -constmerge -internalize -ipsccp -globalopt -constmerge -deadargelim -inline -prune-eh -globalopt -globaldce -argpromotion -instcombine -predsimplify -sroa -globalsmodref-aa -licm -load-vn -gcse -dse -instcombine -simplifycfg -verify"
all_switches="-verify -lowersetjmp -simplifycfg -mem2reg -globalopt -globaldce -deadargelim -instcombine -simplifycfg -prune-eh -inline -simplify-libcalls -argpromotion -tailduplicate -simplifycfg -sroa -instcombine -predsimplify -condprop -tailcallelim -simplifycfg -reassociate -licm -loop-unswitch -instcombine -indvars -loop-unroll -instcombine -load-vn -gcse -sccp -instcombine -condprop -dse -dce -simplifycfg -deadtypeelim -constmerge -internalize -ipsccp -globalopt -constmerge -deadargelim -inline -prune-eh -globalopt -globaldce -argpromotion -instcombine -predsimplify -sroa -globalsmodref-aa -licm -load-vn -gcse -dse -instcombine -simplifycfg -verify"
#counter=0
function tryit {

View File

@ -38,7 +38,6 @@ static_library("IPO") {
"GlobalOpt.cpp",
"GlobalSplit.cpp",
"HotColdSplitting.cpp",
"IPConstantPropagation.cpp",
"IPO.cpp",
"InferFunctionAttrs.cpp",
"InlineSimple.cpp",