Simon Pilgrim 33e1fb27fd Fix constant folding of fp2int to large integers ...

We make the assumption in most of our constant folding code that a fp2int will target an integer of 128-bits or less, calling the APFloat::convertToInteger with only uint64_t[2] of raw bits for the result.

Fuzz testing (PR24662) showed that we don't handle other cases at all, resulting in stack overflows and all sorts of crashes.

This patch uses the APSInt version of APFloat::convertToInteger instead to better handle such cases.

Differential Revision: https://reviews.llvm.org/D31074

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@298226 91177308-0d34-0410-b5e6-96231b3b80d8

2017-03-19 16:50:25 +00:00

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2002-04-14-UnexpectedUnsignedType.ll

Convert more tests to avoid llvm-as.

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2002-04-16-StackFrameSizeAlignment.ll

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2003-05-27-phifcmpd.ll

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2003-05-27-useboolinotherbb.ll

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2003-05-27-usefsubasbool.ll

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2003-05-28-ManyArgs.ll

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2003-05-30-BadFoldGEP.ll

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2003-05-30-BadPreselectPhi.ll

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2003-07-06-BadIntCmp.ll

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2003-07-07-BadLongConst.ll

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2003-07-08-BadCastToBool.ll

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2015-04-16 23:24:18 +00:00

2003-07-29-BadConstSbyte.ll

[AVR] XFAIL a set of failing CodeGen tests

2017-02-08 10:24:18 +00:00

2004-05-09-LiveVarPartialRegister.ll

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2015-02-27 21:17:42 +00:00

2005-01-18-SetUO-InfLoop.ll

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2009-09-09 00:09:15 +00:00

2005-04-09-GlobalInPHI.ll

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2005-10-18-ZeroSizeStackObject.ll

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2005-10-21-longlonggtu.ll

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2005-12-01-Crash.ll

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2005-12-12-ExpandSextInreg.ll

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2006-01-12-BadSetCCFold.ll

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2006-01-18-InvalidBranchOpcodeAssert.ll

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2006-02-12-InsertLibcall.ll

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2006-03-01-dagcombineinfloop.ll

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2015-02-27 21:17:42 +00:00

2006-04-26-SetCCAnd.ll

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2006-04-28-Sign-extend-bool.ll

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2006-05-06-GEP-Cast-Sink-Crash.ll

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2006-06-12-LowerSwitchCrash.ll

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2006-06-13-ComputeMaskedBitsCrash.ll

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2006-06-28-SimplifySetCCCrash.ll

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2006-07-03-schedulers.ll

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2006-08-30-CoalescerCrash.ll

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2006-09-02-LocalAllocCrash.ll

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2006-09-06-SwitchLowering.ll

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2006-10-27-CondFolding.ll

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2006-10-29-Crash.ll

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2006-11-20-DAGCombineCrash.ll

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2015-02-27 21:17:42 +00:00

2007-01-15-LoadSelectCycle.ll

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2015-02-27 21:17:42 +00:00

2007-02-25-invoke.ll

Move the personality function from LandingPadInst to Function

2015-06-17 20:52:32 +00:00

2007-04-08-MultipleFrameIndices.ll

[AVR] XFAIL a set of failing CodeGen tests

2017-02-08 10:24:18 +00:00

2007-04-13-SwitchLowerBadPhi.ll

don't have i386-specific tests in CodeGen/Generic, PR6601.

2010-03-14 18:51:18 +00:00

2007-04-17-lsr-crash.ll

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2009-09-09 00:09:15 +00:00

2007-04-27-InlineAsm-X-Dest.ll

Re-commit: Demote EmitRawText call in AsmPrinter::EmitInlineAsm() and remove hasRawTextSupport() call

2014-02-13 14:44:26 +00:00

2007-04-27-LargeMemObject.ll

Re-commit: Demote EmitRawText call in AsmPrinter::EmitInlineAsm() and remove hasRawTextSupport() call

2014-02-13 14:44:26 +00:00

2007-04-30-LandingPadBranchFolding.ll

Move the personality function from LandingPadInst to Function

2015-06-17 20:52:32 +00:00

2007-05-03-EHTypeInfo.ll

CodeGen: @llvm.eh.typeid.for replaced @llvm.eh.typeid.for.i32

2015-03-16 21:36:38 +00:00

2007-05-15-InfiniteRecursion.ll

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2009-09-09 00:09:15 +00:00

2007-12-17-InvokeAsm.ll

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2007-12-31-UnusedSelector.ll

Move the personality function from LandingPadInst to Function

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2008-01-25-dag-combine-mul.ll

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2008-01-30-LoadCrash.ll

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2008-02-04-Ctlz.ll

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2008-02-04-ExtractSubvector.ll

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2009-09-09 00:09:15 +00:00

2008-02-20-MatchingMem.ll

Unxfail passing test on Hexagon

2015-03-12 20:38:10 +00:00

2008-02-25-NegateZero.ll

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2008-02-26-NegatableCrash.ll

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2009-09-09 00:09:15 +00:00

2008-08-07-PtrToInt-SmallerInt.ll

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2015-03-13 18:20:45 +00:00

2009-03-17-LSR-APInt.ll

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2015-09-11 03:22:04 +00:00

2009-03-29-SoftFloatVectorExtract.ll

Migrate existing backends that care about software floating point

2015-05-12 01:26:05 +00:00

2009-04-10-SinkCrash.ll

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2009-04-28-i128-cmp-crash.ll

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2015-02-27 21:17:42 +00:00

2009-11-16-BadKillsCrash.ll

Move the personality function from LandingPadInst to Function

2015-06-17 20:52:32 +00:00

2010-07-27-DAGCombineCrash.ll

Fix a crash in the dag combiner caused by ConstantFoldBIT_CONVERTofBUILD_VECTOR calling itself

2010-07-27 18:02:18 +00:00

2010-11-04-BigByval.ll

PR11004: Inline memcpy to avoid generating nested call sequence. Un-XFAIL 2011-06-09-TailCallByVal and 2010-11-04-BigByval

2011-09-26 06:13:20 +00:00

2010-ZeroSizedArg.ll

Remove arm_apcscc from the test files. It is the default and doing this

2010-06-17 15:18:27 +00:00

2011-01-06-BigNumberCrash.ll

Add a testcase for PR8582, which mysteriously fixed itself, in case the problem

2011-01-06 23:04:29 +00:00

2011-07-07-ScheduleDAGCrash.ll

[AVR] XFAIL a set of failing CodeGen tests

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2012-06-08-APIntCrash.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

2013-03-20-APFloatCrash.ll

Add a test case for PR15318 fixed in r177472

2013-03-20 06:18:06 +00:00

2014-02-05-OpaqueConstants.ll

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2015-02-27 21:17:42 +00:00

add-with-overflow-24.ll

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add-with-overflow-128.ll

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add-with-overflow.ll

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2015-04-16 23:24:18 +00:00

addr-label.ll

Fix PR6673: updating the callback should not clear the map.

2010-03-22 23:15:57 +00:00

annotate.ll

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2015-03-13 18:20:45 +00:00

APIntLoadStore.ll

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APIntParam.ll

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APIntSextParam.ll

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APIntZextParam.ll

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2009-09-09 00:09:15 +00:00

asm-large-immediate.ll

Re-commit: Demote EmitRawText call in AsmPrinter::EmitInlineAsm() and remove hasRawTextSupport() call

2014-02-13 14:44:26 +00:00

assume.ll

Add @llvm.assume, lowering, and some basic properties

2014-07-25 21:13:35 +00:00

badarg6.ll

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badCallArgLRLLVM.ll

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badFoldGEP.ll

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BasicInstrs.ll

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bool-to-double.ll

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builtin-expect.ll

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call2-ret0.ll

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call-ret0.ll

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call-ret42.ll

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call-void.ll

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cast-fp.ll

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2015-04-16 23:24:18 +00:00

cfi-sections.ll

PR 31534: When emitting both DWARF unwind tables and debug information,

2017-01-05 20:55:28 +00:00

ConstantExprLowering.ll

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constindices.ll

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crash.ll

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dag-combine-crash.ll

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2015-02-27 21:17:42 +00:00

dbg_value.ll

DI: Require subprogram definitions to be distinct

2015-08-28 20:26:49 +00:00

div-neg-power-2.ll

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2009-09-09 00:09:15 +00:00

donothing.ll

Move the personality function from LandingPadInst to Function

2015-06-17 20:52:32 +00:00

dont-remove-empty-preheader.ll

Add missing test for the "Don't delete empty preheaders" added in r265397

2016-04-05 14:21:32 +00:00

edge-bundles-blockIDs.ll

Don't run RAFast in the optimizing regalloc pipeline.

2012-06-08 23:15:12 +00:00

empty-insertvalue.ll

Fix crash with an insertvalue that produces an empty object.

2014-09-20 00:10:47 +00:00

empty-load-store.ll

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empty-phi.ll

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2015-02-27 21:17:42 +00:00

exception-handling.ll

Move the personality function from LandingPadInst to Function

2015-06-17 20:52:32 +00:00

externally_available.ll

Do not verify MachimeDominatorTree if it is not calculated

2017-03-02 12:00:10 +00:00

fastcall.ll

[opaque pointer type] Add textual IR support for explicit type parameter to gep operator

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fneg-fabs.ll

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ForceStackAlign.ll

Revert "Change memcpy/memset/memmove to have dest and source alignments."

2015-11-19 05:56:52 +00:00

fp_to_int.ll

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2009-09-09 00:09:15 +00:00

fp-to-int-invalid.ll

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2015-02-27 21:17:42 +00:00

fpowi-promote.ll

make target independent.

2010-02-09 06:36:30 +00:00

fwdtwice.ll

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2015-02-27 21:17:42 +00:00

global-ret0.ll

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2015-02-27 21:17:42 +00:00

hello.ll

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i128-addsub.ll

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i128-arith.ll

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icmp-illegal.ll

Remove an empty line in icmp-illegal.ll . NFC

2017-02-27 16:09:44 +00:00

inline-asm-mem-clobber.ll

[AVR] XFAIL a set of failing CodeGen tests

2017-02-08 10:24:18 +00:00

inline-asm-special-strings.ll

Re-commit: Demote EmitRawText call in AsmPrinter::EmitInlineAsm() and remove hasRawTextSupport() call

2014-02-13 14:44:26 +00:00

intrinsics.ll

Add -O0 support for @llvm.invariant.group.barrier by discarding it if it gets to ISel.

2016-11-07 16:47:20 +00:00

invalid-memcpy.ll

Revert "Change memcpy/memset/memmove to have dest and source alignments."

2015-11-19 05:56:52 +00:00

isunord.ll

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2009-09-09 00:09:15 +00:00

lit.local.cfg

Make the default triple optional by allowing an empty string

2015-09-16 05:34:32 +00:00

llc-start-stop.ll

llc: Add -start-before/-stop-before options

2016-09-23 21:46:02 +00:00

llvm-ct-intrinsics.ll

Manually upgrade the test suite to specify the flag to cttz and ctlz.

2011-12-12 11:59:10 +00:00

MachineBranchProb.ll

[AVR] XFAIL a set of failing CodeGen tests

2017-02-08 10:24:18 +00:00

multiple-return-values-cross-block-with-invoke.ll

Move the personality function from LandingPadInst to Function

2015-06-17 20:52:32 +00:00

negintconst.ll

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2015-04-16 23:24:18 +00:00

nested-select.ll

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2009-09-09 00:09:15 +00:00

no-target.ll

Fix pr18235.

2013-12-13 16:05:32 +00:00

overflow.ll

add a general coverage test for overflow intrinsics.

2010-12-19 20:01:13 +00:00

overloaded-intrinsic-name.ll

Only run the overloaded-intrinsic-name.ll test once, with FileCheck.

2017-03-01 01:56:41 +00:00

PBQP.ll

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pr2625.ll

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pr3288.ll

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2009-09-09 00:09:15 +00:00

pr12507.ll

Don't try to zExt just to check if an integer constant is zero, it might

2012-04-10 00:16:22 +00:00

pr24662.ll

Fix constant folding of fp2int to large integers

2017-03-19 16:50:25 +00:00

print-add.ll

[opaque pointer type] Add textual IR support for explicit type parameter to the call instruction

2015-04-16 23:24:18 +00:00

print-after.ll

CommandLine: Exit successfully for -version and -help

2014-02-28 19:08:01 +00:00

print-arith-fp.ll

[opaque pointer type] Add textual IR support for explicit type parameter to the call instruction

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print-arith-int.ll

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print-int.ll

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print-machineinstrs.ll

Rename argument strings of codegen passes to avoid collisions with command line

2014-12-13 04:52:04 +00:00

print-mul-exp.ll

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print-mul.ll

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print-shift.ll

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ptr-annotate.ll

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ret0.ll

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ret42.ll

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select-cc.ll

[AVR] XFAIL a set of failing CodeGen tests

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select.ll

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shift-int64.ll

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stacksave-restore.ll

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storetrunc-fp.ll

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2009-09-09 00:09:15 +00:00

switch-lower-feature.ll

merge two tests, make target independent.

2010-02-09 06:19:20 +00:00

switch-lower.ll

Fix PR5421 by APInt'izing switch lowering.

2009-11-07 07:50:34 +00:00

trap.ll

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2009-09-09 00:09:15 +00:00

undef-phi.ll

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2015-02-27 21:17:42 +00:00

v-split.ll

[AVR] XFAIL a set of failing CodeGen tests

2017-02-08 10:24:18 +00:00

vector-casts.ll

whitespace tidyup. NFC.

2015-07-03 08:02:12 +00:00

vector-constantexpr.ll

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2009-09-09 00:09:15 +00:00

vector-identity-shuffle.ll

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vector-redux.ll

[AVR] XFAIL a set of failing CodeGen tests

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vector.ll

[AVR] XFAIL a set of failing CodeGen tests

2017-02-08 10:24:18 +00:00

zero-sized-array.ll

Make codegen able to handle values of empty types. This is one way

2011-05-13 15:18:06 +00:00