llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-02-08 06:32:24 +00:00

History

Tim Northover d0dbe02fd2 ARM & AArch64: make use of common cmpxchg idioms after expansion

The C and C++ semantics for compare_exchange require it to return a bool
indicating success. This gets mapped to LLVM IR which follows each cmpxchg with
an icmp of the value loaded against the desired value.

When lowered to ldxr/stxr loops, this extra comparison is redundant: its
results are implicit in the control-flow of the function.

This commit makes two changes: it replaces that icmp with appropriate PHI
nodes, and then makes sure earlyCSE is called after expansion to actually make
use of the opportunities revealed.

I've also added -{arm,aarch64}-enable-atomic-tidy options, so that
existing fragile tests aren't perturbed too much by the change. Many
of them either rely on undef/unreachable too pervasively to be
restored to something well-defined (particularly while making sure
they test the same obscure assert from many years ago), or depend on a
particular CFG shape, which is disrupted by SimplifyCFG.

rdar://problem/16227836

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209883 91177308-0d34-0410-b5e6-96231b3b80d8

2014-05-30 10:09:59 +00:00

2009-07-17-CrossRegClassCopy.ll

…

2009-07-21-ISelBug.ll

Mass update to CodeGen tests to use CHECK-LABEL for labels corresponding to function definitions for more informative error messages. No functionality change and all updated tests passed locally.

2013-07-14 06:24:09 +00:00

2009-07-23-CPIslandBug.ll

…

2009-07-30-PEICrash.ll

…

2009-08-01-WrongLDRBOpc.ll

ARM & AArch64: make use of common cmpxchg idioms after expansion

2014-05-30 10:09:59 +00:00

2009-08-02-CoalescerBug.ll

…

2009-08-04-CoalescerAssert.ll

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2009-08-04-CoalescerBug.ll

…

2009-08-04-ScavengerAssert.ll

…

2009-08-04-SubregLoweringBug2.ll

…

2009-08-04-SubregLoweringBug3.ll

…

2009-08-04-SubregLoweringBug.ll

…

2009-08-06-SpDecBug.ll

ARM & AArch64: make use of common cmpxchg idioms after expansion

2014-05-30 10:09:59 +00:00

2009-08-07-CoalescerBug.ll

…

2009-08-07-NeonFPBug.ll

…

2009-08-08-ScavengerAssert.ll

…

2009-08-10-ISelBug.ll

…

2009-08-21-PostRAKill4.ll

…

2009-09-01-PostRAProlog.ll

…

2009-09-28-ITBlockBug.ll

ARM & AArch64: make use of common cmpxchg idioms after expansion

2014-05-30 10:09:59 +00:00

2009-10-15-ITBlockBranch.ll

Mass update to CodeGen tests to use CHECK-LABEL for labels corresponding to function definitions for more informative error messages. No functionality change and all updated tests passed locally.

2013-07-14 06:24:09 +00:00

2009-11-01-CopyReg2RegBug.ll

…

2009-11-11-ScavengerAssert.ll

…

2009-11-13-STRDBug.ll

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2009-12-01-LoopIVUsers.ll

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2010-01-06-TailDuplicateLabels.ll

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2010-01-19-RemovePredicates.ll

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2010-02-11-phi-cycle.ll

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2010-02-24-BigStack.ll

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2010-03-08-addi12-ccout.ll

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2010-03-15-AsmCCClobber.ll

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2010-04-15-DynAllocBug.ll

ARM & AArch64: make use of common cmpxchg idioms after expansion

2014-05-30 10:09:59 +00:00

2010-04-26-CopyRegCrash.ll

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2010-05-24-rsbs.ll

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2010-06-14-NEONCoalescer.ll

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2010-06-19-ITBlockCrash.ll

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2010-06-21-TailMergeBug.ll

ARM & AArch64: make use of common cmpxchg idioms after expansion

2014-05-30 10:09:59 +00:00

2010-08-10-VarSizedAllocaBug.ll

Mass update to CodeGen tests to use CHECK-LABEL for labels corresponding to function definitions for more informative error messages. No functionality change and all updated tests passed locally.

2013-07-14 06:24:09 +00:00

2010-11-22-EpilogueBug.ll

ARM & AArch64: make use of common cmpxchg idioms after expansion

2014-05-30 10:09:59 +00:00

2010-12-03-AddSPNarrowing.ll

…

2011-04-21-FILoweringBug.ll

Mass update to CodeGen tests to use CHECK-LABEL for labels corresponding to function definitions for more informative error messages. No functionality change and all updated tests passed locally.

2013-07-14 06:24:09 +00:00

2011-06-07-TwoAddrEarlyClobber.ll

ARM & AArch64: make use of common cmpxchg idioms after expansion

2014-05-30 10:09:59 +00:00

2011-12-16-T2SizeReduceAssert.ll

[Thumbv8] Fix the value of BLXOperandIndex of isV8EligibleForIT

2014-01-23 19:55:33 +00:00

2012-01-13-CBNZBug.ll

Mass update to CodeGen tests to use CHECK-LABEL for labels corresponding to function definitions for more informative error messages. No functionality change and all updated tests passed locally.

2013-07-14 06:24:09 +00:00

2013-02-19-tail-call-register-hint.ll

…

2013-03-02-vduplane-nonconstant-source-index.ll

…

2013-03-06-vector-sext-operand-scalarize.ll

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aligned-constants.ll

…

aligned-spill.ll

…

bfi.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

bfx.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

buildvector-crash.ll

ARM & AArch64: make use of common cmpxchg idioms after expansion

2014-05-30 10:09:59 +00:00

carry.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

constant-islands.ll

Remove -arm-disable-ehabi option

2014-02-07 20:12:49 +00:00

cortex-fp.ll

Add extra CHECK prefix to tests with explicit prefix

2014-02-16 13:28:15 +00:00

crash.ll

…

cross-rc-coalescing-1.ll

…

cross-rc-coalescing-2.ll

ARM & AArch64: make use of common cmpxchg idioms after expansion

2014-05-30 10:09:59 +00:00

div.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

frameless2.ll

…

frameless.ll

…

ifcvt-neon.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

inflate-regs.ll

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inlineasm.ll

…

large-call.ll

…

large-stack.ll

Enabling thumb2 mode used to force support for armv6t2. Replace this

2013-12-13 11:16:00 +00:00

ldr-str-imm12.ll

ARM & AArch64: make use of common cmpxchg idioms after expansion

2014-05-30 10:09:59 +00:00

lit.local.cfg

[tests] Cleanup initialization of test suffixes.

2013-08-16 00:37:11 +00:00

longMACt.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

lsr-deficiency.ll

Mass update to CodeGen tests to use CHECK-LABEL for labels corresponding to function definitions for more informative error messages. No functionality change and all updated tests passed locally.

2013-07-14 06:24:09 +00:00

machine-licm.ll

Mass update to CodeGen tests to use CHECK-LABEL for labels corresponding to function definitions for more informative error messages. No functionality change and all updated tests passed locally.

2013-07-14 06:24:09 +00:00

mul_const.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

pic-load.ll

Mass update to CodeGen tests to use CHECK-LABEL for labels corresponding to function definitions for more informative error messages. No functionality change and all updated tests passed locally.

2013-07-14 06:24:09 +00:00

segmented-stacks.ll

Move the segmented stack switch to a function attribute

2014-04-10 22:58:43 +00:00

tail-call-r9.ll

Fix broken CHECK lines.

2014-01-11 21:06:00 +00:00

thumb2-adc.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-add2.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-add3.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-add4.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-add5.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-add6.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-add.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-and2.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-and.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-asr2.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-asr.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-bcc.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-bfc.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-bic.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-branch.ll

ARM & AArch64: make use of common cmpxchg idioms after expansion

2014-05-30 10:09:59 +00:00

thumb2-call-tc.ll

Mass update to CodeGen tests to use CHECK-LABEL for labels corresponding to function definitions for more informative error messages. No functionality change and all updated tests passed locally.

2013-07-14 06:24:09 +00:00

thumb2-call.ll

Mass update to CodeGen tests to use CHECK-LABEL for labels corresponding to function definitions for more informative error messages. No functionality change and all updated tests passed locally.

2013-07-14 06:24:09 +00:00

thumb2-cbnz.ll

ARM & AArch64: make use of common cmpxchg idioms after expansion

2014-05-30 10:09:59 +00:00

thumb2-clz.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-cmn2.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-cmn.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-cmp2.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-cmp.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-eor2.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-eor.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-ifcvt1-tc.ll

Mass update to CodeGen tests to use CHECK-LABEL for labels corresponding to function definitions for more informative error messages. No functionality change and all updated tests passed locally.

2013-07-14 06:24:09 +00:00

thumb2-ifcvt1.ll

Enable generating legacy IT block for AArch32

2013-11-13 18:29:49 +00:00

thumb2-ifcvt2.ll

ARM & AArch64: make use of common cmpxchg idioms after expansion

2014-05-30 10:09:59 +00:00

thumb2-ifcvt3.ll

ARM & AArch64: make use of common cmpxchg idioms after expansion

2014-05-30 10:09:59 +00:00

thumb2-jtb.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-ldm.ll

Fix the Load/Store optimization pass to work with Thumb1.

2014-05-16 14:14:30 +00:00

thumb2-ldr_ext.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-ldr_post.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-ldr_pre.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-ldr.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-ldrb.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-ldrd.ll

…

thumb2-ldrh.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-lsl2.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-lsl.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-lsr2.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-lsr3.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-lsr.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-mla.ll

ARM: fix test case missed in previous roundup

2014-04-04 01:19:56 +00:00

thumb2-mls.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-mov.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-mul.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-mulhi.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-mvn2.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-mvn.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-neg.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-orn2.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-orn.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-orr2.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-orr.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-pack.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-rev16.ll

Enabling thumb2 mode used to force support for armv6t2. Replace this

2013-12-13 11:16:00 +00:00

thumb2-rev.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-ror.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-rsb2.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-rsb.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-sbc.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-select_xform.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-select.ll

ARM: update even more tests

2014-04-03 17:35:22 +00:00

thumb2-shifter.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-smla.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-smul.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-spill-q.ll

ARM & AArch64: make use of common cmpxchg idioms after expansion

2014-05-30 10:09:59 +00:00

thumb2-str_post.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-str_pre.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-str.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-strb.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-strh.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-sub2.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-sub3.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-sub4.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-sub5.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-sub.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-sxt_rot.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-sxt-uxt.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-tbb.ll

Mass update to CodeGen tests to use CHECK-LABEL for labels corresponding to function definitions for more informative error messages. No functionality change and all updated tests passed locally.

2013-07-14 06:24:09 +00:00

thumb2-tbh.ll

Mass update to CodeGen tests to use CHECK-LABEL for labels corresponding to function definitions for more informative error messages. No functionality change and all updated tests passed locally.

2013-07-14 06:24:09 +00:00

thumb2-teq2.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-teq.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-tst2.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-tst.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-uxt_rot.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

thumb2-uxtb.ll

ARM: yet another round of ARM test clean ups

2014-04-03 23:47:24 +00:00

tls1.ll

Add support for parsing ARM symbol variants on ELF targets

2013-12-04 22:43:20 +00:00

tls2.ll

Add support for parsing ARM symbol variants on ELF targets

2013-12-04 22:43:20 +00:00

v8_IT_1.ll

Enable generating legacy IT block for AArch32

2013-11-13 18:29:49 +00:00

v8_IT_2.ll

Enable generating legacy IT block for AArch32

2013-11-13 18:29:49 +00:00

v8_IT_3.ll

ARM & AArch64: make use of common cmpxchg idioms after expansion

2014-05-30 10:09:59 +00:00

v8_IT_4.ll

Enable generating legacy IT block for AArch32

2013-11-13 18:29:49 +00:00

v8_IT_5.ll

ARM & AArch64: make use of common cmpxchg idioms after expansion

2014-05-30 10:09:59 +00:00

v8_IT_6.ll

ARMv8 IfConversion must skip narrow instructions that a) define CPSR and b) wouldn't affect CPSR in an IT block

2014-02-26 11:27:28 +00:00