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From: "sjames at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/112572] [14 regression] LLVM miscompiled since r14-5355-g3cd3a09b3f91a1
Date: Sat, 18 Nov 2023 10:18:07 +0000 [thread overview]
Message-ID: <bug-112572-4-rHcdra2sE7@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-112572-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112572
--- Comment #8 from Sam James <sjames at gcc dot gnu.org> ---
Bringing MLRegallocEvictAdvisor.cpp.o into a good build then relinking
lib/libLLVMCodeGen.so.17 is enough to break it.
Some selected diffs:
```
│ llvm::NextPowerOf2(unsigned long):
│ /home/sam/git/llvm-project/llvm/include/llvm/Support/MathExtras.h:356
│ inc %rdi
│ unsigned int const& std::max<unsigned int>(unsigned int const&, unsigned int
const&):
│ -/tmp/build-reverted/include/c++/14.0.0/bits/stl_algobase.h:262
│ +/tmp/build/include/c++/14.0.0/bits/stl_algobase.h:262
│ cmp %eax,%edi
│ cmovb %eax,%edi
│ llvm::DenseMap<unsigned int, (anonymous namespace)::LIFeatureComponents,
llvm::DenseMapInfo<unsigned int, void>, llvm::detail::DenseMapPair<unsigned
int, (anonymous namespace)::LIFeatureComponents> >::grow
(unsigned int):
│ /home/sam/git/llvm-project/llvm/include/llvm/ADT/DenseMap.h:892
│ mov %edi,0x18(%rbx)
│ allocateBuckets():
│ /home/sam/git/llvm-project/llvm/include/llvm/ADT/DenseMap.h:899
│ @@ -321,9 +321,9 @@
│ /home/sam/git/llvm-project/llvm/include/llvm/ADT/DenseMap.h:658
(discriminator 3)
│ cmp %r10d,%edx
│ je 135 <llvm::DenseMap<unsigned int, (anonymous
namespace)::LIFeatureComponents, llvm::DenseMapInfo<unsigned int, void>,
llvm::detail::DenseMapPair<unsigned int, (anonymous namespace)::LIFeatureCo
mponents> >::grow(unsigned int)+0x135>
│ mov 0xc(%rsp),%r15d
│ jmp 199 <llvm::DenseMap<unsigned int, (anonymous
namespace)::LIFeatureComponents, llvm::DenseMapInfo<unsigned int, void>,
llvm::detail::DenseMapPair<unsigned int, (anonymous namespace)::LIFeatureCo
mponents> >::grow(unsigned int)+0x199>
│ initEmpty():
│ /home/sam/git/llvm-project/llvm/include/llvm/ADT/DenseMap.h:658
(discriminator 3)
│ - call 288 <.LC133>
│ + call 288 <.LC133+0x8>
```
│ std::unique_ptr<llvm::MachineOperand* [],
std::default_delete<llvm::MachineOperand* []> >::operator[](unsigned long)
const:
│ -/tmp/build-reverted/include/c++/14.0.0/bits/unique_ptr.h:726 (discriminator
4)
│ +/tmp/build/include/c++/14.0.0/bits/unique_ptr.h:726 (discriminator 4)
│ lea 0x0(%rip),%rcx # 16f7 <(anonymous
namespace)::MLEvictAdvisor::extractFeatures(llvm::SmallVectorImpl<llvm::LiveInterval
const*> const&, llvm::SmallVectorImpl<float>&, unsigned long, long,
long, float, llvm::SmallVectorImpl<LRStartEndInfo>&) const [clone
.isra.0]+0x16f7>
│ R_X86_64_PC32 .LC78-0x4
│ lea 0x0(%rip),%rdx # 16fe <(anonymous
namespace)::MLEvictAdvisor::extractFeatures(llvm::SmallVectorImpl<llvm::LiveInterval
const*> const&, llvm::SmallVectorImpl<float>&, unsigned long, long,
long, float, llvm::SmallVectorImpl<LRStartEndInfo>&) const [clone
.isra.0]+0x16fe>
│ R_X86_64_PC32 .LC79-0x4
│ mov $0x2d6,%esi
│ lea 0x0(%rip),%rdi # 170a <(anonymous
namespace)::MLEvictAdvisor::extractFeatures(llvm::SmallVectorImpl<llvm::LiveInterval
const*> const&, llvm::SmallVectorImpl<float>&, unsigned long, long,
long, float, llvm::SmallVectorImpl<LRStartEndInfo>&) const [clone
.isra.0]+0x170a>
│ R_X86_64_PC32 .LC80-0x4
│ @@ -2665,9 +2665,9 @@
│ vxorps %xmm3,%xmm3,%xmm3
│ shr %rdx
│ or %rax,%rdx
│ vcvtsi2ss %rdx,%xmm3,%xmm0
│ vaddss %xmm0,%xmm0,%xmm1
│ jmp 472 <(anonymous
namespace)::MLEvictAdvisor::extractFeatures(llvm::SmallVectorImpl<llvm::LiveInterval
const*> const&, llvm::SmallVectorImpl<float>&, unsigned long, long, long,
float, llvm::Small
VectorImpl<LRStartEndInfo>&) const [clone .isra.0]+0x472>
│ mov %rax,%rbx
│ - jmp 1ad0 <.LC100+0x8d8>
│ + jmp 1ad0 <.LC100+0x8f0>
```
```
│ extractInstructionFeatures(llvm::SmallVectorImpl<LRStartEndInfo>&,
llvm::MLModelRunner*, llvm::function_ref<int (llvm::SlotIndex)>,
llvm::function_ref<float (llvm::SlotIndex)>, llvm::function_ref<llvm::Mac
hineBasicBlock* (llvm::SlotIndex)>, int, int, int, int, llvm::SlotIndex):
│ -/tmp/build-reverted/include/c++/14.0.0/bits/stl_algo.h:1897
│ +/tmp/build/include/c++/14.0.0/bits/stl_algo.h:1897
│ cmp %rcx,%r12
│ __sort<LRStartEndInfo*,
__gnu_cxx::__ops::_Iter_comp_iter<extractInstructionFeatures(llvm::SmallVectorImpl<LRStartEndInfo>&,
llvm::MLModelRunner*, llvm::function_ref<int(llvm::SlotIndex)>,
llvm::function_r
ef<float(llvm::SlotIndex)>,
llvm::function_ref<llvm::MachineBasicBlock*(llvm::SlotIndex)>, int, int, int,
int, llvm::SlotIndex)::<lambda(LRStartEndInfo, LRStartEndInfo)> > >():
│ -/tmp/build-reverted/include/c++/14.0.0/bits/stl_algo.h:1897
│ +/tmp/build/include/c++/14.0.0/bits/stl_algo.h:1897
│ je e8
<extractInstructionFeatures(llvm::SmallVectorImpl<LRStartEndInfo>&,
llvm::MLModelRunner*, llvm::function_ref<int (llvm::SlotIndex)>,
llvm::function_ref<float (llvm::SlotIndex)>,
llvm::function_ref<llvm::MachineBasicBlock* (llvm::SlotIndex)>, int, int, int,
int, llvm::SlotIndex)+0xe8>
│ -/tmp/build-reverted/include/c++/14.0.0/bits/stl_algo.h:1900
│ +/tmp/build/include/c++/14.0.0/bits/stl_algo.h:1900
│ mov %rbx,%rax
│ movabs $0xaaaaaaaaaaaaaaab,%rdx
│ -/tmp/build-reverted/include/c++/14.0.0/bits/stl_algo.h:1899
│ - mov %rcx,%rsi
│ +/tmp/build/include/c++/14.0.0/bits/stl_algo.h:1899
│ + mov %r15,%rsi
│ mov %r12,%rdi
│ -/tmp/build-reverted/include/c++/14.0.0/bits/stl_algo.h:1900
│ +/tmp/build/include/c++/14.0.0/bits/stl_algo.h:1900
│ sar $0x3,%rax
│ - mov %rcx,%r15
│ imul %rdx,%rax
│ long std::__lg<long>(long):
```
```
│ __sort<LRStartEndInfo*,
__gnu_cxx::__ops::_Iter_comp_iter<extractInstructionFeatures(llvm::SmallVectorImpl<LRStartEndInfo>&,
llvm::MLModelRunner*, llvm::function_ref<int(llvm::SlotIndex)>,
llvm::function_ref<float(llvm::SlotIndex)>,
llvm::function_ref<llvm::MachineBasicBlock*(llvm::SlotIndex)>, int, int, int,
int, llvm::SlotIndex)::<lambda(LRStartEndInfo, LRStartEndInfo)> > >():
│ -/tmp/build-reverted/include/c++/14.0.0/bits/stl_algo.h:1899
│ +/tmp/build/include/c++/14.0.0/bits/stl_algo.h:1899
│ add %rdx,%rdx
│ - call a0
<extractInstructionFeatures(llvm::SmallVectorImpl<LRStartEndInfo>&,
llvm::MLModelRunner*, llvm::function_ref<int (llvm::SlotIndex)>,
llvm::function_ref<float (llvm::SlotIndex)>, llvm::functi
on_ref<llvm::MachineBasicBlock* (llvm::SlotIndex)>, int, int, int, int,
llvm::SlotIndex)+0xa0>
│ + call 9d
<extractInstructionFeatures(llvm::SmallVectorImpl<LRStartEndInfo>&,
llvm::MLModelRunner*, llvm::function_ref<int (llvm::SlotIndex)>,
llvm::function_ref<float (llvm::SlotIndex)>, llvm::functi
on_ref<llvm::MachineBasicBlock* (llvm::SlotIndex)>, int, int, int, int,
llvm::SlotIndex)+0x9d>
│ R_X86_64_PC32
.text._ZSt16__introsort_loopIP14LRStartEndInfolN9__gnu_cxx5__ops15_Iter_comp_iterIZ26extractInstructionFeaturesRN4llvm15SmallVectorImplIS0_EEPNS5_13MLModelRunnerENS5_12function_refIFiN
S5_9SlotIndexEEEENSB_IFfSC_EEENSB_IFPNS5_17MachineBasicBlockESC_EEEiiiiSC_EUlS0_S0_E_EEEvT_SN_T0_T1_-0x4
│ extractInstructionFeatures(llvm::SmallVectorImpl<LRStartEndInfo>&,
llvm::MLModelRunner*, llvm::function_ref<int (llvm::SlotIndex)>,
llvm::function_ref<float (llvm::SlotIndex)>, llvm::function_ref<llvm::Mac
hineBasicBlock* (llvm::SlotIndex)>, int, int, int, int, llvm::SlotIndex):
```
```
│ R_X86_64_REX_GOTPCRELX vtable for llvm::RegAllocEvictionAdvisor-0x4
│ vzeroupper
│ - jmp 7bb <.LC76+0x7b>
│ + jmp 7bb <.LC76+0x83>
```
next prev parent reply other threads:[~2023-11-18 10:18 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-16 20:06 [Bug middle-end/112572] New: " sjames at gcc dot gnu.org
2023-11-17 0:00 ` [Bug middle-end/112572] " sjames at gcc dot gnu.org
2023-11-17 0:41 ` sjames at gcc dot gnu.org
2023-11-17 4:13 ` sjames at gcc dot gnu.org
2023-11-17 4:14 ` sjames at gcc dot gnu.org
2023-11-17 5:21 ` sjames at gcc dot gnu.org
2023-11-17 5:23 ` pinskia at gcc dot gnu.org
2023-11-17 5:28 ` pinskia at gcc dot gnu.org
2023-11-17 10:43 ` jakub at gcc dot gnu.org
2023-11-18 10:18 ` sjames at gcc dot gnu.org [this message]
2023-11-18 10:19 ` sjames at gcc dot gnu.org
2023-11-18 10:23 ` sjames at gcc dot gnu.org
2023-11-18 10:58 ` sjames at gcc dot gnu.org
2023-11-18 10:59 ` sjames at gcc dot gnu.org
2023-11-18 11:00 ` sjames at gcc dot gnu.org
2023-11-18 11:11 ` jakub at gcc dot gnu.org
2023-11-18 11:36 ` sjames at gcc dot gnu.org
2023-11-18 21:00 ` pinskia at gcc dot gnu.org
2023-11-18 21:13 ` pinskia at gcc dot gnu.org
2023-11-18 21:28 ` pinskia at gcc dot gnu.org
2023-11-18 21:38 ` slyfox at gcc dot gnu.org
2023-11-18 21:55 ` pinskia at gcc dot gnu.org
2023-11-18 22:22 ` pinskia at gcc dot gnu.org
2023-11-18 22:39 ` pinskia at gcc dot gnu.org
2023-11-18 23:06 ` rsandifo at gcc dot gnu.org
2023-11-18 23:39 ` pinskia at gcc dot gnu.org
2023-11-19 7:21 ` pinskia at gcc dot gnu.org
2023-11-19 9:24 ` ebotcazou at gcc dot gnu.org
2023-11-19 9:42 ` sjames at gcc dot gnu.org
2023-11-30 21:09 ` jakub at gcc dot gnu.org
2023-11-30 21:12 ` pinskia at gcc dot gnu.org
2023-11-30 22:29 ` sjames at gcc dot gnu.org
2023-12-04 2:49 ` pinskia at gcc dot gnu.org
2023-12-04 11:01 ` sjames at gcc dot gnu.org
2023-12-06 9:02 ` jakub at gcc dot gnu.org
2023-12-06 18:32 ` pinskia at gcc dot gnu.org
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