From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 75276] Implement VGPR Register Spilling Date: Sat, 17 May 2014 08:37:07 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============2029197971==" Return-path: Received: from culpepper.freedesktop.org (unknown [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id 613C96E3E0 for ; Sat, 17 May 2014 01:37:07 -0700 (PDT) In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org --===============2029197971== Content-Type: multipart/alternative; boundary="1400315827.2bCAA0.24536"; charset="us-ascii" --1400315827.2bCAA0.24536 Date: Sat, 17 May 2014 08:37:07 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" https://bugs.freedesktop.org/show_bug.cgi?id=75276 --- Comment #14 from farmboy0+freedesktop@googlemail.com --- The v3 patch doesnt fix Antichamber's crash to desktop. But with this patch it actually shows the VGPR messages: LLVM triggered Diagnostic Handler: SIInstrInfo::storeRegToStackSlot - Can't spill VGPR! LLVM triggered Diagnostic Handler: SIInstrInfo::loadRegToStackSlot - Can't retrieve spilled VGPR! Here's the start of the backtrace for reference: Program received signal SIGSEGV, Segmentation fault. 0xf504f671 in std::pair::operator= (this=0x450d2ff4, __p=...) at /usr/lib/gcc/x86_64-pc-linux-gnu/4.7.3/include/g++-v4/bits/stl_pair.h:153 153 second = __p.second; (gdb) bt #0 0xf504f671 in std::pair::operator= (this=0x450d2ff4, __p=...) at /usr/lib/gcc/x86_64-pc-linux-gnu/4.7.3/include/g++-v4/bits/stl_pair.h:153 #1 0xf505e8c5 in llvm::IntervalMapImpl::NodeBase, llvm::LiveInterval*, 16u>::copy<16u> ( this=0x44ee9644, Other=..., i=250679, j=250678, Count=4294967295) at /mnt/daten/Daten/Repositories/llvm/include/llvm/ADT/IntervalMap.h:231 #2 0xf505f3ad in llvm::IntervalMapImpl::NodeBase, llvm::LiveInterval*, 16u>::moveLeft ( this=0x44ee9644, i=1, j=0, Count=4294967295) at /mnt/daten/Daten/Repositories/llvm/include/llvm/ADT/IntervalMap.h:242 #3 0xf505ec81 in llvm::IntervalMapImpl::NodeBase, llvm::LiveInterval*, 16u>::erase ( this=0x44ee9644, i=0, j=1, Size=0) at /mnt/daten/Daten/Repositories/llvm/include/llvm/ADT/IntervalMap.h:263 #4 0xf505e175 in llvm::IntervalMapImpl::NodeBase, llvm::LiveInterval*, 16u>::erase ( this=0x44ee9644, i=0, Size=0) at /mnt/daten/Daten/Repositories/llvm/include/llvm/ADT/IntervalMap.h:270 #5 0xf505d1ee in llvm::IntervalMap >::iterator::erase ( this=0xffff6348) at /mnt/daten/Daten/Repositories/llvm/include/llvm/ADT/IntervalMap.h:1876 #6 0xf505c846 in llvm::LiveIntervalUnion::extract (this=0x44ee9640, VirtReg=...) at LiveIntervalUnion.cpp:68 #7 0xf50655ef in llvm::LiveRegMatrix::unassign (this=0x44d26e60, VirtReg=...) at LiveRegMatrix.cpp:96 #8 0xf511e81f in (anonymous namespace)::RAGreedy::tryLastChanceRecoloring (this=0x44243000, VirtReg=..., Order=..., NewVRegs=..., FixedRegisters=..., Depth=0) at RegAllocGreedy.cpp:2067 #9 0xf511f224 in (anonymous namespace)::RAGreedy::selectOrSplitImpl (this=0x44243000, VirtReg=..., NewVRegs=..., FixedRegisters=..., Depth=0) at RegAllocGreedy.cpp:2285 #10 0xf511eb60 in (anonymous namespace)::RAGreedy::selectOrSplit (this=0x44243000, VirtReg=..., NewVRegs=...) at RegAllocGreedy.cpp:2144 -- You are receiving this mail because: You are the assignee for the bug. --1400315827.2bCAA0.24536 Date: Sat, 17 May 2014 08:37:07 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8"

Comment # 14 on bug 75276 from 
The v3 patch doesnt fix Antichamber's crash to desktop.
But with this patch it actually shows the VGPR messages:

LLVM triggered Diagnostic Handler: SIInstrInfo::storeRegToStackSlot - Can't
spill VGPR!
LLVM triggered Diagnostic Handler: SIInstrInfo::loadRegToStackSlot - Can't
retrieve spilled VGPR!

Here's the start of the backtrace for reference:

Program received signal SIGSEGV, Segmentation fault.
0xf504f671 in std::pair<llvm::SlotIndex, llvm::SlotIndex>::operator=
(this=0x450d2ff4, __p=...)
    at
/usr/lib/gcc/x86_64-pc-linux-gnu/4.7.3/include/g++-v4/bits/stl_pair.h:153
153             second = __p.second;
(gdb) bt
#0  0xf504f671 in std::pair<llvm::SlotIndex, llvm::SlotIndex>::operator=
(this=0x450d2ff4, __p=...)
    at
/usr/lib/gcc/x86_64-pc-linux-gnu/4.7.3/include/g++-v4/bits/stl_pair.h:153
#1  0xf505e8c5 in llvm::IntervalMapImpl::NodeBase<std::pair<llvm::SlotIndex,
llvm::SlotIndex>, llvm::LiveInterval*, 16u>::copy<16u> (
    this=0x44ee9644, Other=..., i=250679, j=250678, Count=4294967295)
    at /mnt/daten/Daten/Repositories/llvm/include/llvm/ADT/IntervalMap.h:231
#2  0xf505f3ad in llvm::IntervalMapImpl::NodeBase<std::pair<llvm::SlotIndex,
llvm::SlotIndex>, llvm::LiveInterval*, 16u>::moveLeft (
    this=0x44ee9644, i=1, j=0, Count=4294967295) at
/mnt/daten/Daten/Repositories/llvm/include/llvm/ADT/IntervalMap.h:242
#3  0xf505ec81 in llvm::IntervalMapImpl::NodeBase<std::pair<llvm::SlotIndex,
llvm::SlotIndex>, llvm::LiveInterval*, 16u>::erase (
    this=0x44ee9644, i=0, j=1, Size=0) at
/mnt/daten/Daten/Repositories/llvm/include/llvm/ADT/IntervalMap.h:263
#4  0xf505e175 in llvm::IntervalMapImpl::NodeBase<std::pair<llvm::SlotIndex,
llvm::SlotIndex>, llvm::LiveInterval*, 16u>::erase (
    this=0x44ee9644, i=0, Size=0) at
/mnt/daten/Daten/Repositories/llvm/include/llvm/ADT/IntervalMap.h:270
#5  0xf505d1ee in llvm::IntervalMap<llvm::SlotIndex, llvm::LiveInterval*, 16u,
llvm::IntervalMapInfo<llvm::SlotIndex> >::iterator::erase (
    this=0xffff6348) at
/mnt/daten/Daten/Repositories/llvm/include/llvm/ADT/IntervalMap.h:1876
#6  0xf505c846 in llvm::LiveIntervalUnion::extract (this=0x44ee9640,
VirtReg=...) at LiveIntervalUnion.cpp:68
#7  0xf50655ef in llvm::LiveRegMatrix::unassign (this=0x44d26e60, VirtReg=...)
at LiveRegMatrix.cpp:96
#8  0xf511e81f in (anonymous namespace)::RAGreedy::tryLastChanceRecoloring
(this=0x44243000, VirtReg=..., Order=..., NewVRegs=..., 
    FixedRegisters=..., Depth=0) at RegAllocGreedy.cpp:2067
#9  0xf511f224 in (anonymous namespace)::RAGreedy::selectOrSplitImpl
(this=0x44243000, VirtReg=..., NewVRegs=..., FixedRegisters=..., 
    Depth=0) at RegAllocGreedy.cpp:2285
#10 0xf511eb60 in (anonymous namespace)::RAGreedy::selectOrSplit
(this=0x44243000, VirtReg=..., NewVRegs=...) at RegAllocGreedy.cpp:2144

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