llvm-6502/test/CodeGen/PowerPC
Hal Finkel 6a34916fbf [PowerPC] Fix rlwimi isel when mask is not constant
We had been using the known-zero values of the operand of the or to construct
the mask for an rlwimi; this is not quite correct, but fine when the mask is
constant. When the mask is constant, then the known zeros of the operand must
be a superset of the zeros in the mask. However, when the mask is not a
constant, then there might be bits in the operand that are not known to be zero
that, at runtime, might be zero in the mask. Therefore, we check that any bits
not known to be zero *are* known to be one in the mask. Otherwise, we can't
fold the mask with the or and shift.

This was revealed as a miscompile of
MultiSource/Benchmarks/BitBench/drop3/drop3 when I started experimenting with
constant hoisting.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206136 91177308-0d34-0410-b5e6-96231b3b80d8
2014-04-13 17:10:58 +00:00
..
2004-11-29-ShrCrash.ll
2004-11-30-shift-crash.ll
2004-11-30-shr-var-crash.ll
2004-12-12-ZeroSizeCommon.ll
2005-01-14-SetSelectCrash.ll
2005-01-14-UndefLong.ll
2005-08-12-rlwimi-crash.ll
2005-09-02-LegalizeDuplicatesCalls.ll
2005-10-08-ArithmeticRotate.ll
2005-11-30-vastart-crash.ll
2006-01-11-darwin-fp-argument.ll
2006-01-20-ShiftPartsCrash.ll
2006-04-01-FloatDoubleExtend.ll
2006-04-05-splat-ish.ll
2006-04-19-vmaddfp-crash.ll
2006-05-12-rlwimi-crash.ll
2006-07-07-ComputeMaskedBits.ll
2006-07-19-stwbrx-crash.ll
2006-08-11-RetVector.ll
2006-08-15-SelectionCrash.ll
2006-09-28-shift_64.ll
2006-10-13-Miscompile.ll
2006-10-17-brcc-miscompile.ll
2006-10-17-ppc64-alloca.ll
2006-11-10-DAGCombineMiscompile.ll
2006-11-29-AltivecFPSplat.ll
2006-12-07-LargeAlloca.ll
2006-12-07-SelectCrash.ll
2007-01-04-ArgExtension.ll
2007-01-15-AsmDialect.ll
2007-01-29-lbrx-asm.ll
2007-01-31-InlineAsmAddrMode.ll
2007-02-16-AlignPacked.ll
2007-02-16-InlineAsmNConstraint.ll
2007-02-23-lr-saved-twice.ll
2007-03-24-cntlzd.ll
2007-03-30-SpillerCrash.ll
2007-04-24-InlineAsm-I-Modifier.ll Re-commit: Demote EmitRawText call in AsmPrinter::EmitInlineAsm() and remove hasRawTextSupport() call 2014-02-13 14:44:26 +00:00
2007-04-30-InlineAsmEarlyClobber.ll
2007-05-03-InlineAsm-S-Constraint.ll Re-commit: Demote EmitRawText call in AsmPrinter::EmitInlineAsm() and remove hasRawTextSupport() call 2014-02-13 14:44:26 +00:00
2007-05-14-InlineAsmSelectCrash.ll
2007-05-22-tailmerge-3.ll
2007-05-30-dagcombine-miscomp.ll
2007-06-28-BCCISelBug.ll
2007-08-04-CoalescerAssert.ll
2007-09-04-AltivecDST.ll
2007-09-07-LoadStoreIdxForms.ll
2007-09-08-unaligned.ll
2007-09-11-RegCoalescerAssert.ll
2007-09-12-LiveIntervalsAssert.ll
2007-10-16-InlineAsmFrameOffset.ll
2007-10-18-PtrArithmetic.ll
2007-10-21-LocalRegAllocAssert2.ll
2007-10-21-LocalRegAllocAssert.ll
2007-11-04-CoalescerCrash.ll
2007-11-16-landingpad-split.ll Add the ability to use GEPs for address sinking in CGP 2014-04-12 00:59:48 +00:00
2007-11-19-VectorSplitting.ll
2008-02-05-LiveIntervalsAssert.ll
2008-02-09-LocalRegAllocAssert.ll
2008-03-05-RegScavengerAssert.ll
2008-03-17-RegScavengerCrash.ll
2008-03-18-RegScavengerAssert.ll
2008-03-24-AddressRegImm.ll
2008-03-24-CoalescerBug.ll
2008-03-26-CoalescerBug.ll
2008-04-10-LiveIntervalCrash.ll
2008-04-16-CoalescerBug.ll
2008-04-23-CoalescerCrash.ll
2008-05-01-ppc_fp128.ll
2008-06-19-LegalizerCrash.ll
2008-06-21-F128LoadStore.ll
2008-06-23-LiveVariablesCrash.ll
2008-07-10-SplatMiscompile.ll
2008-07-15-Bswap.ll
2008-07-15-Fabs.ll
2008-07-15-SignExtendInreg.ll
2008-07-17-Fneg.ll
2008-07-24-PPC64-CCBug.ll
2008-09-12-CoalescerBug.ll
2008-10-17-AsmMatchingOperands.ll
2008-10-28-f128-i32.ll
2008-10-28-UnprocessedNode.ll
2008-10-31-PPCF128Libcalls.ll
2008-12-02-LegalizeTypeAssert.ll
2009-01-16-DeclareISelBug.ll
2009-03-17-LSRBug.ll
2009-05-28-LegalizeBRCC.ll
2009-07-16-InlineAsm-M-Operand.ll
2009-08-17-inline-asm-addr-mode-breakage.ll
2009-09-18-carrybit.ll
2009-11-15-ProcImpDefsBug.ll
2009-11-25-ImpDefBug.ll
2010-02-04-EmptyGlobal.ll
2010-02-12-saveCR.ll
2010-03-09-indirect-call.ll
2010-04-01-MachineCSEBug.ll
2010-05-03-retaddr1.ll
2010-10-11-Fast-Varargs.ll
2010-12-18-PPCStackRefs.ll
2011-12-05-NoSpillDupCR.ll
2011-12-06-SpillAndRestoreCR.ll
2011-12-08-DemandedBitsMiscompile.ll
2012-09-16-TOC-entry-check.ll
2012-10-11-dynalloc.ll
2012-10-12-bitcast.ll
2012-11-16-mischedcall.ll
2013-05-15-preinc-fold.ll
2013-07-01-PHIElimBug.ll
a2-fp-basic.ll
a2q-stackalign.ll
a2q.ll
aa-tbaa.ll Reenable use of TBAA during CodeGen 2014-04-12 01:26:00 +00:00
addc.ll
addi-reassoc.ll
addrfuncstr.ll
align.ll
allocate-r0.ll
altivec-ord.ll
and_add.ll
and_sext.ll
and_sra.ll
and-branch.ll
and-elim.ll
and-imm.ll
anon_aggr.ll
ashr-neg1.ll
asm-dialect.ll
asm-Zy.ll
asym-regclass-copy.ll
atomic-1.ll IR: add a second ordering operand to cmpxhg for failure 2014-03-11 10:48:52 +00:00
atomic-2.ll IR: add a second ordering operand to cmpxhg for failure 2014-03-11 10:48:52 +00:00
Atomics-32.ll IR: add a second ordering operand to cmpxhg for failure 2014-03-11 10:48:52 +00:00
Atomics-64.ll IR: add a second ordering operand to cmpxhg for failure 2014-03-11 10:48:52 +00:00
available-externally.ll
bdzlr.ll Add CR-bit tracking to the PowerPC backend for i1 values 2014-02-28 00:27:01 +00:00
big-endian-actual-args.ll
big-endian-call-result.ll
big-endian-formal-args.ll
branch-opt.ll
bswap-load-store.ll
buildvec_canonicalize.ll
bv-pres-v8i1.ll
bv-widen-undef.ll
byval-agg-info.ll
calls.ll
can-lower-ret.ll
cc.ll [PowerPC] Add a full condition code register to make the "cc" clobber work 2014-04-04 15:15:57 +00:00
cmp-cmp.ll
coalesce-ext.ll
compare-duplicate.ll
compare-simm.ll
complex-return.ll
constants.ll
copysignl.ll
cr1eq-no-extra-moves.ll
cr1eq.ll
cr_spilling.ll
cr-spills.ll
crash.ll
crbit-asm.ll Add a PPC inline asm constraint type for single CR bits 2014-03-02 18:23:39 +00:00
crbits.ll Remove extra truncs/exts around i32 bit operations on PPC64 2014-03-01 21:36:57 +00:00
crsave.ll
ctr-cleanup.ll
ctrloop-asm.ll
ctrloop-cpsgn.ll
ctrloop-fp64.ll
ctrloop-i64.ll
ctrloop-large-ec.ll Actually call FileCheck in tests 2014-02-16 13:27:39 +00:00
ctrloop-le.ll [PowerPC] Implement some additional TLI callbacks 2014-04-12 21:52:38 +00:00
ctrloop-lt.ll [PowerPC] Implement some additional TLI callbacks 2014-04-12 21:52:38 +00:00
ctrloop-ne.ll
ctrloop-reg.ll
ctrloop-s000.ll
ctrloop-sums.ll
ctrloop-udivti3.ll Account for 128-bit integer operations in PPCCTRLoops 2014-02-25 20:51:50 +00:00
ctrloops.ll
cttz.ll
darwin-labels.ll
dbg.ll
DbgValueOtherTargets.test
dcbt-sched.ll
delete-node.ll
div-2.ll
dyn-alloca-aligned.ll
early-ret2.ll Add CR-bit tracking to the PowerPC backend for i1 values 2014-02-28 00:27:01 +00:00
early-ret.ll
empty-functions.ll
emptystruct.ll
eqv-andc-orc-nor.ll
extsh.ll
fabs.ll
fast-isel-binary.ll
fast-isel-br-const.ll
fast-isel-call.ll
fast-isel-cmp-imm.ll
fast-isel-conversion-p5.ll Fix PR19144: Incorrect offset generated for int-to-fp conversion at -O0. 2014-03-18 14:32:50 +00:00
fast-isel-conversion.ll
fast-isel-crash.ll
fast-isel-ext.ll
fast-isel-fold.ll
fast-isel-GEP-coalesce.ll
fast-isel-indirectbr.ll
fast-isel-load-store.ll
fast-isel-redefinition.ll
fast-isel-ret.ll
fast-isel-shifter.ll
fastisel-gep-promote-before-add.ll
fcpsgn.ll
float-asmprint.ll
float-to-int.ll [PowerPC] Make use of VSX f64 <-> i64 conversion instructions 2014-03-23 05:35:00 +00:00
floatPSA.ll
fma.ll
fnabs.ll
fneg.ll
fold-li.ll
fold-zero.ll Add CR-bit tracking to the PowerPC backend for i1 values 2014-02-28 00:27:01 +00:00
fp_to_uint.ll
fp-branch.ll
fp-int-fp.ll
fpcopy.ll
frame-size.ll
frameaddr.ll
Frames-alloca.ll
Frames-large.ll
Frames-leaf.ll
Frames-small.ll
frounds.ll
fsel.ll
fsl-e500mc.ll
fsl-e5500.ll
fsqrt.ll
glob-comp-aa-crash.ll
hello-reloc.s
hello.ll
hidden-vis-2.ll
hidden-vis.ll
i1-to-double.ll With PPC CR bit registers, handle int_to_fp on older cores 2014-03-05 22:14:00 +00:00
i32-to-float.ll [PowerPC] Make use of VSX f64 <-> i64 conversion instructions 2014-03-23 05:35:00 +00:00
i64_fp_round.ll
i64_fp.ll
i64-to-float.ll [PowerPC] Make use of VSX f64 <-> i64 conversion instructions 2014-03-23 05:35:00 +00:00
i128-and-beyond.ll
iabs.ll
ifcvt.ll
illegal-element-type.ll
in-asm-f64-reg.ll
indirectbr.ll
inlineasm-copy.ll "foo" is not a ppc instruction, don't try to parse it. 2014-02-13 15:33:35 +00:00
inlineasm-i64-reg.ll
int-fp-conv-0.ll
int-fp-conv-1.ll
inverted-bool-compares.ll
isel-rc-nox0.ll
isel.ll
ispositive.ll
itofp128.ll
jaggedstructs.ll
LargeAbsoluteAddr.ll
lbzux.ll
lha.ll
lit.local.cfg
load-constant-addr.ll
load-shift-combine.ll
long-compare.ll
longdbl-truncate.ll
lsa.ll
lsr-postinc-pos.ll
mask64.ll
mature-mc-support.ll Re-commit: Demote EmitRawText call in AsmPrinter::EmitInlineAsm() and remove hasRawTextSupport() call 2014-02-13 14:44:26 +00:00
mcm-1.ll
mcm-2.ll
mcm-3.ll
mcm-4.ll
mcm-5.ll
mcm-6.ll
mcm-7.ll
mcm-8.ll
mcm-9.ll
mcm-10.ll [PowerPC] Implement some additional TLI callbacks 2014-04-12 21:52:38 +00:00
mcm-11.ll [PowerPC] Implement some additional TLI callbacks 2014-04-12 21:52:38 +00:00
mcm-12.ll
mcm-default.ll
mcm-obj-2.ll [PowerPC] Implement some additional TLI callbacks 2014-04-12 21:52:38 +00:00
mcm-obj.ll
mem_update.ll
mem-rr-addr-mode.ll
misched-inorder-latency.ll
misched.ll
mul-neg-power-2.ll
mul-with-overflow.ll
mulhs.ll
mulli64.ll
mult-alt-generic-powerpc64.ll
mult-alt-generic-powerpc.ll
neg.ll
negctr.ll
no-dead-strip.ll
novrsave.ll
optcmp.ll Add CR-bit tracking to the PowerPC backend for i1 values 2014-02-28 00:27:01 +00:00
or-addressing-mode.ll
popcnt.ll
ppc32-i1-vaarg.ll Fixup PPC Darwin i1 argument handling 2014-03-06 00:45:19 +00:00
ppc32-vacopy.ll
ppc64-32bit-addic.ll
ppc64-abi-extend.ll
ppc64-align-long-double.ll
ppc64-calls.ll
ppc64-crash.ll
ppc64-cyclecounter.ll
ppc64-linux-func-size.ll
ppc64-prefetch.ll
ppc64-toc.ll
ppc64-vaarg-int.ll
ppc64-zext.ll
ppc440-fp-basic.ll
ppc440-msync.ll
ppc-prologue.ll
ppc-vaarg-agg.ll
ppcf128-1-opt.ll
ppcf128-1.ll
ppcf128-2.ll
ppcf128-3.ll
ppcf128-4.ll
pr3711_widen_bit.ll
pr12757.ll
pr13641.ll
pr13891.ll
pr15031.ll
pr15359.ll
pr15630.ll
pr15632.ll
pr16556-2.ll
pr16556.ll
pr16573.ll
pr17168.ll
pr17354.ll
private.ll Add back r201608, r201622, r201624 and r201625 2014-02-19 17:23:20 +00:00
pwr3-6x.ll
pwr7-gt-nop.ll
quadint-return.ll
r31.ll
recipest.ll
reg-coalesce-simple.ll
reg-names.ll
reloc-align.ll
remap-crash.ll
remat-imm.ll
retaddr.ll
return-val-i128.ll
rlwimi2.ll
rlwimi3.ll
rlwimi-and.ll Add CR-bit tracking to the PowerPC backend for i1 values 2014-02-28 00:27:01 +00:00
rlwimi-commute.ll
rlwimi-dyn-and.ll [PowerPC] Fix rlwimi isel when mask is not constant 2014-04-13 17:10:58 +00:00
rlwimi-keep-rsh.ll
rlwimi.ll
rlwinm2.ll
rlwinm.ll
rotl-2.ll
rotl-64.ll
rotl.ll
rounding-ops.ll
rs-undef-use.ll
s000-alias-misched.ll
sdag-ppcf128.ll Add CR-bit tracking to the PowerPC backend for i1 values 2014-02-28 00:27:01 +00:00
sections.ll
select_lt0.ll
select-cc.ll
set0-v8i16.ll
setcc_no_zext.ll Add CR-bit tracking to the PowerPC backend for i1 values 2014-02-28 00:27:01 +00:00
seteq-0.ll Add CR-bit tracking to the PowerPC backend for i1 values 2014-02-28 00:27:01 +00:00
shift128.ll
shl_elim.ll
shl_sext.ll
sign_ext_inreg1.ll
sj-ctr-loop.ll
sjlj.ll
small-arguments.ll
spill-nor0.ll
srl-mask.ll
stack-protector.ll
stack-realign.ll
std-unal-fi.ll
stdux-constuse.ll
stfiwx-2.ll
stfiwx.ll
store-load-fwd.ll
store-update.ll
structsinmem.ll
structsinregs.ll
stubs.ll
stwu8.ll
stwu-gta.ll
stwux.ll
sub-bv-types.ll
subc.ll
subsumes-pred-regs.ll Add CR-bit tracking to the PowerPC backend for i1 values 2014-02-28 00:27:01 +00:00
svr4-redzone.ll
tailcall1-64.ll
tailcall1.ll
tailcallpic1.ll
tls-pic.ll
tls.ll
trampoline.ll
unal4-std.ll
unal-altivec2.ll
unal-altivec.ll
unaligned.ll
unsafe-math.ll
unwind-dw2-g.ll
unwind-dw2.ll
vaddsplat.ll
varargs-struct-float.ll
varargs.ll
vcmp-fold.ll
vec_auto_constant.ll
vec_br_cmp.ll
vec_buildvector_loadstore.ll
vec_call.ll
vec_cmp.ll
vec_constants.ll
vec_conv.ll
vec_extload.ll
vec_fmuladd.ll
vec_fneg.ll
vec_insert.ll
vec_misaligned.ll
vec_mul.ll
vec_perf_shuffle.ll
vec_rounding.ll
vec_select.ll
vec_shift.ll
vec_shuffle.ll
vec_splat_constant.ll
vec_splat.ll
vec_sqrt.ll
vec_vrsave.ll
vec_zero.ll
vec-abi-align.ll
vector-identity-shuffle.ll
vector.ll
vrsave-spill.ll
vrspill.ll
vsx-args.ll [PowerPC] v2[fi]64 need to be explicitly passed in VSX registers 2014-03-28 19:58:11 +00:00
vsx-fma-m.ll [PowerPC] Add subregister classes for f64 VSX values 2014-03-29 05:29:01 +00:00
vsx-self-copy.ll [PowerPC] Use a small cleanup pass to remove VSX self copies 2014-03-27 23:12:31 +00:00
vsx-spill.ll [PowerPC] Add subregister classes for f64 VSX values 2014-03-29 05:29:01 +00:00
vsx.ll [PowerPC] Add some missing VSX bitcast patterns 2014-04-01 19:24:27 +00:00
vtable-reloc.ll [ppc64] Avoid copy relocs in named rodata sections 2014-03-14 12:45:22 +00:00
weak_def_can_be_hidden.ll Fix a bug with .weak_def_can_be_hidden: Mutable variables cannot use it. 2014-02-07 16:21:30 +00:00
zero-not-run.ll