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LSR shouldn't ever try to hack on integer IV's larger than 64-bits. Right now

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it is not APInt clean, but even when it is it needs to be evaluated carefully
to determine whether it is actually profitable.

This fixes a crash on PR3806

llvm-svn: 67134
This commit is contained in:
Chris Lattner 2009-03-17 23:58:30 +00:00
parent 6a6d9e48dd
commit ee2d69fc7b
2 changed files with 98 additions and 0 deletions
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6
lib/Transforms/Scalar/LoopStrengthReduce.cpp
View File

@ -592,6 +592,12 @@ bool LoopStrengthReduce::AddUsersIfInteresting(Instruction *I, Loop *L,
SmallPtrSet<Instruction*,16> &Processed) { SmallPtrSet<Instruction*,16> &Processed) {
if (!I->getType()->isInteger() && !isa<PointerType>(I->getType())) if (!I->getType()->isInteger() && !isa<PointerType>(I->getType()))
return false; // Void and FP expressions cannot be reduced. return false; // Void and FP expressions cannot be reduced.
// LSR is not APInt clean, do not touch integers bigger than 64-bits.
if (I->getType()->isInteger() &&
I->getType()->getPrimitiveSizeInBits() > 64)
return false;
if (!Processed.insert(I)) if (!Processed.insert(I))
return true; // Instruction already handled. return true; // Instruction already handled.

92
test/CodeGen/Generic/2009-03-17-LSR-APInt.ll Normal file
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@ -0,0 +1,92 @@
; RUN: llvm-as < %s | llc
; PR3806
%struct..0__pthread_mutex_s = type { i32, i32, i32, i32, i32, i32, %struct.__pthread_list_t }
%struct.Alignment = type { i32 }
%struct.QDesignerFormWindowInterface = type { %struct.QWidget }
%struct.QFont = type { %struct.QFontPrivate*, i32 }
%struct.QFontPrivate = type opaque
%"struct.QHash<QString,QList<QAbstractExtensionFactory*> >" = type { %"struct.QHash<QString,QList<QAbstractExtensionFactory*> >::._120" }
%"struct.QHash<QString,QList<QAbstractExtensionFactory*> >::._120" = type { %struct.QHashData* }
%struct.QHashData = type { %"struct.QHashData::Node"*, %"struct.QHashData::Node"**, %struct.Alignment, i32, i32, i16, i16, i32, i8 }
%"struct.QHashData::Node" = type { %"struct.QHashData::Node"*, i32 }
%"struct.QList<QAbstractExtensionFactory*>" = type { %"struct.QList<QAbstractExtensionFactory*>::._101" }
%"struct.QList<QAbstractExtensionFactory*>::._101" = type { %struct.QListData }
%struct.QListData = type { %"struct.QListData::Data"* }
%"struct.QListData::Data" = type { %struct.Alignment, i32, i32, i32, i8, [1 x i8*] }
%struct.QObject = type { i32 (...)**, %struct.QObjectData* }
%struct.QObjectData = type { i32 (...)**, %struct.QObject*, %struct.QObject*, %"struct.QList<QAbstractExtensionFactory*>", i32, i32 }
%struct.QPaintDevice.base = type { i32 (...)**, i16 }
%"struct.QPair<int,int>" = type { i32, i32 }
%struct.QPalette = type { %struct.QPalettePrivate*, i32 }
%struct.QPalettePrivate = type opaque
%struct.QRect = type { i32, i32, i32, i32 }
%struct.QWidget = type { %struct.QObject, %struct.QPaintDevice.base, %struct.QWidgetData* }
%struct.QWidgetData = type { i64, i32, %struct.Alignment, i8, i8, i16, %struct.QRect, %struct.QPalette, %struct.QFont, %struct.QRect }
%struct.__pthread_list_t = type { %struct.__pthread_list_t*, %struct.__pthread_list_t* }
%struct.pthread_attr_t = type { i64, [48 x i8] }
%struct.pthread_mutex_t = type { %struct..0__pthread_mutex_s }
%"struct.qdesigner_internal::Grid" = type { i32, i32, %struct.QWidget**, i8*, i8* }
%"struct.qdesigner_internal::GridLayout" = type { %"struct.qdesigner_internal::Layout", %"struct.QPair<int,int>", %"struct.qdesigner_internal::Grid"* }
%"struct.qdesigner_internal::Layout" = type { %struct.QObject, %"struct.QList<QAbstractExtensionFactory*>", %struct.QWidget*, %"struct.QHash<QString,QList<QAbstractExtensionFactory*> >", %struct.QWidget*, %struct.QDesignerFormWindowInterface*, i8, %"struct.QPair<int,int>", %struct.QRect, i8 }
@_ZL20__gthrw_pthread_oncePiPFvvE = alias weak i32 (i32*, void ()*)* @pthread_once ; <i32 (i32*, void ()*)*> [#uses=0]
@_ZL27__gthrw_pthread_getspecificj = alias weak i8* (i32)* @pthread_getspecific ; <i8* (i32)*> [#uses=0]
@_ZL27__gthrw_pthread_setspecificjPKv = alias weak i32 (i32, i8*)* @pthread_setspecific ; <i32 (i32, i8*)*> [#uses=0]
@_ZL22__gthrw_pthread_createPmPK14pthread_attr_tPFPvS3_ES3_ = alias weak i32 (i64*, %struct.pthread_attr_t*, i8* (i8*)*, i8*)* @pthread_create ; <i32 (i64*, %struct.pthread_attr_t*, i8* (i8*)*, i8*)*> [#uses=0]
@_ZL22__gthrw_pthread_cancelm = alias weak i32 (i64)* @pthread_cancel ; <i32 (i64)*> [#uses=0]
@_ZL26__gthrw_pthread_mutex_lockP15pthread_mutex_t = alias weak i32 (%struct.pthread_mutex_t*)* @pthread_mutex_lock ; <i32 (%struct.pthread_mutex_t*)*> [#uses=0]
@_ZL29__gthrw_pthread_mutex_trylockP15pthread_mutex_t = alias weak i32 (%struct.pthread_mutex_t*)* @pthread_mutex_trylock ; <i32 (%struct.pthread_mutex_t*)*> [#uses=0]
@_ZL28__gthrw_pthread_mutex_unlockP15pthread_mutex_t = alias weak i32 (%struct.pthread_mutex_t*)* @pthread_mutex_unlock ; <i32 (%struct.pthread_mutex_t*)*> [#uses=0]
@_ZL26__gthrw_pthread_mutex_initP15pthread_mutex_tPK19pthread_mutexattr_t = alias weak i32 (%struct.pthread_mutex_t*, %struct.Alignment*)* @pthread_mutex_init ; <i32 (%struct.pthread_mutex_t*, %struct.Alignment*)*> [#uses=0]
@_ZL26__gthrw_pthread_key_createPjPFvPvE = alias weak i32 (i32*, void (i8*)*)* @pthread_key_create ; <i32 (i32*, void (i8*)*)*> [#uses=0]
@_ZL26__gthrw_pthread_key_deletej = alias weak i32 (i32)* @pthread_key_delete ; <i32 (i32)*> [#uses=0]
@_ZL30__gthrw_pthread_mutexattr_initP19pthread_mutexattr_t = alias weak i32 (%struct.Alignment*)* @pthread_mutexattr_init ; <i32 (%struct.Alignment*)*> [#uses=0]
@_ZL33__gthrw_pthread_mutexattr_settypeP19pthread_mutexattr_ti = alias weak i32 (%struct.Alignment*, i32)* @pthread_mutexattr_settype ; <i32 (%struct.Alignment*, i32)*> [#uses=0]
@_ZL33__gthrw_pthread_mutexattr_destroyP19pthread_mutexattr_t = alias weak i32 (%struct.Alignment*)* @pthread_mutexattr_destroy ; <i32 (%struct.Alignment*)*> [#uses=0]
define void @_ZN18qdesigner_internal10GridLayout9buildGridEv(%"struct.qdesigner_internal::GridLayout"* %this) nounwind {
entry:
br label %bb44
bb44: ; preds = %bb47, %entry
%indvar = phi i128 [ %indvar.next144, %bb47 ], [ 0, %entry ] ; <i128> [#uses=2]
br i1 false, label %bb46, label %bb47
bb46: ; preds = %bb44
%tmp = shl i128 %indvar, 64 ; <i128> [#uses=1]
%tmp96 = and i128 %tmp, 79228162495817593519834398720 ; <i128> [#uses=0]
br label %bb47
bb47: ; preds = %bb46, %bb44
%indvar.next144 = add i128 %indvar, 1 ; <i128> [#uses=1]
br label %bb44
}
declare i32 @pthread_once(i32*, void ()*)
declare i8* @pthread_getspecific(i32)
declare i32 @pthread_setspecific(i32, i8*)
declare i32 @pthread_create(i64*, %struct.pthread_attr_t*, i8* (i8*)*, i8*)
declare i32 @pthread_cancel(i64)
declare i32 @pthread_mutex_lock(%struct.pthread_mutex_t*)
declare i32 @pthread_mutex_trylock(%struct.pthread_mutex_t*)
declare i32 @pthread_mutex_unlock(%struct.pthread_mutex_t*)
declare i32 @pthread_mutex_init(%struct.pthread_mutex_t*, %struct.Alignment*)
declare i32 @pthread_key_create(i32*, void (i8*)*)
declare i32 @pthread_key_delete(i32)
declare i32 @pthread_mutexattr_init(%struct.Alignment*)
declare i32 @pthread_mutexattr_settype(%struct.Alignment*, i32)
declare i32 @pthread_mutexattr_destroy(%struct.Alignment*)