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d1cee9b3bc
llvm-6502/test/CodeGen/Thumb2
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Kristof Beyls d1cee9b3bc Fix large stack alignment codegen for ARM and Thumb2 targets 
This partially fixes PR13007 (ARM CodeGen fails with large stack
alignment): for ARM and Thumb2 targets, but not for Thumb1, as it
seems stack alignment for Thumb1 targets hasn't been supported at
all.

Producing an aligned stack pointer is done by zero-ing out the lower
bits of the stack pointer. The BIC instruction was used for this.
However, the immediate field of the BIC instruction only allows to
encode an immediate that can zero out up to a maximum of the 8 lower
bits. When a larger alignment is requested, a BIC instruction cannot
be used; llvm was silently producing incorrect code in this case.

This commit fixes code generation for large stack aligments by
using the BFC instruction instead, when the BFC instruction is
available.  When not, it uses 2 instructions: a right shift,
followed by a left shift to zero out the lower bits.

The lowering of ARM::Int_eh_sjlj_dispatchsetup still has code
that unconditionally uses BIC to realign the stack pointer, so it
very likely has the same problem. However, I wasn't able to
produce a test case for that. This commit adds an assert so that
the compiler will fail the assert instead of silently generating
wrong code if this is ever reached.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225446 91177308-0d34-0410-b5e6-96231b3b80d8
2015-01-08 15:09:14 +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
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 / x86_64 varargs: Don't save regparms in prologue without va_start 2014-08-22 21:59:26 +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
2009-12-01-LoopIVUsers.ll Delete -std-compile-opts. 2014-10-16 20:00:02 +00:00
2010-01-06-TailDuplicateLabels.ll
2010-01-19-RemovePredicates.ll
2010-02-11-phi-cycle.ll Convert CodeGen/*/*.ll tests to use the new CHECK-LABEL for easier debugging. No functionality change and all tests pass after conversion. 2013-07-13 20:38:47 +00:00
2010-02-24-BigStack.ll
2010-03-08-addi12-ccout.ll
2010-03-15-AsmCCClobber.ll
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
2010-05-24-rsbs.ll
2010-06-14-NEONCoalescer.ll
2010-06-19-ITBlockCrash.ll
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 Convert CodeGen/*/*.ll tests to use the new CHECK-LABEL for easier debugging. No functionality change and all tests pass after conversion. 2013-07-13 20:38:47 +00:00
aapcs.ll [ARM] Enable DP copy, load and store instructions for FPv4-SP 2014-08-21 12:50:31 +00:00
aligned-constants.ll
aligned-spill.ll Fix large stack alignment codegen for ARM and Thumb2 targets 2015-01-08 15:09:14 +00:00
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-jump-table.ll [ARMConstantIsland] Insert tbb/tbh optimization where previous jump table resided. 2014-12-12 23:27:40 +00:00
constant-islands-new-island.ll ARM: allow constpool entry to be moved to the user's block in all cases. 2014-11-13 17:58:53 +00:00
constant-islands.ll Remove -arm-disable-ehabi option 2014-02-07 20:12:49 +00:00
cortex-fp.ll [ARM] Add support for Cortex-M7, FPv5-SP and FPv5-DP (LLVM) 2014-10-01 09:02:17 +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
float-cmp.ll [ARM] Add support for Cortex-M7, FPv5-SP and FPv5-DP (LLVM) 2014-10-01 09:02:17 +00:00
float-intrinsics-double.ll [ARM] Allow selecting VRINT[APMXZR] and VCVT[BT] instructions for FPv5 2014-10-01 13:13:18 +00:00
float-intrinsics-float.ll [ARM] Allow selecting VRINT[APMXZR] and VCVT[BT] instructions for FPv5 2014-10-01 13:13:18 +00:00
float-ops.ll [ARM] Add support for Cortex-M7, FPv5-SP and FPv5-DP (LLVM) 2014-10-01 09:02:17 +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
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 Reduce verbiage of lit.local.cfg files 2014-06-09 22:42:55 +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
stack_guard_remat.ll [ARM] In dynamic-no-pic mode, ARM's post-RA pseudo expansion was incorrectly 2014-08-02 05:40:40 +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 IR: Make metadata typeless in assembly 2014-12-15 19:07:53 +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 Fix large stack alignment codegen for ARM and Thumb2 targets 2015-01-08 15:09:14 +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: spot SBFX-compatbile code expressed with sign_extend_inreg 2014-07-23 13:59:12 +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: add patterns for [su]xta[bh] from just a shift. 2014-07-23 13:59:07 +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
tpsoft.ll ARM: Fix TPsoft for Thumb mode 2014-06-24 15:45:59 +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