From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 84232] PHINode containing itself causes segfault in LLVM when compiling Blender OpenCL kernel with R600 backend Date: Fri, 10 Oct 2014 15:48:20 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0195900338==" Return-path: Received: from culpepper.freedesktop.org (unknown [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id 4EC6E6E434 for ; Fri, 10 Oct 2014 08:48:20 -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 --===============0195900338== Content-Type: multipart/alternative; boundary="1412956100.34B12.5989"; charset="UTF-8" --1412956100.34B12.5989 Date: Fri, 10 Oct 2014 15:48:20 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" https://bugs.freedesktop.org/show_bug.cgi?id=84232 --- Comment #7 from Vitaliy Filippov --- Another thought: it seems PHINode that contain itself are also a product of StructurizeCFG! After running `opt-3.5 -S -structurizecfg kernel.ll > kernel-scfg.ll` on the kernel from attached blender output, kernel-scfg.ll contains phinode that reference themselves directly... While kernel.ll did not contain such PHINodes. grep -P '(%\S+) = phi.*\1' kernel-scfg.ll %18919 = phi float [ %18919, %Flow196 ], [ %19044, %Flow162 ], [ %18839, %18838 ] %18920 = phi float [ %18920, %Flow196 ], [ %18915, %Flow162 ], [ %18840, %18838 ] %18921 = phi <4 x float> addrspace(1)* [ %18921, %Flow196 ], [ %18896, %Flow162 ], [ %18841, %18838 ] %18922 = phi i32 [ %18922, %Flow196 ], [ %18895, %Flow162 ], [ %18842, %18838 ] %18923 = phi i32 [ %18923, %Flow196 ], [ %18894, %Flow162 ], [ %18843, %18838 ] %19208 = phi i64 [ %19208, %Flow195 ], [ %indvars.iv.next.i.i, %Flow164 ], [ %18953, %Flow161 ] %19209 = phi float [ %19209, %Flow195 ], [ %19056, %Flow164 ], [ %18954, %Flow161 ] %19210 = phi float [ %19210, %Flow195 ], [ %19055, %Flow164 ], [ %18955, %Flow161 ] %19211 = phi float [ %19211, %Flow195 ], [ %19054, %Flow164 ], [ %18956, %Flow161 ] %19212 = phi i32 [ %19212, %Flow195 ], [ %19053, %Flow164 ], [ %18957, %Flow161 ] %19213 = phi i32 [ %19213, %Flow195 ], [ %19052, %Flow164 ], [ %18958, %Flow161 ] %19227 = phi i1 [ %19227, %Flow195 ], [ %19059, %Flow164 ], [ true, %Flow161 ] %19590 = phi <4 x float> [ %19590, %Flow188 ], [ %20245, %Flow171 ], [ %19529, %Flow169 ] %19591 = phi <4 x float> [ %19591, %Flow188 ], [ %20246, %Flow171 ], [ %19530, %Flow169 ] %19592 = phi float [ %19592, %Flow188 ], [ %20247, %Flow171 ], [ %19531, %Flow169 ] %19593 = phi <4 x float> [ %19593, %Flow188 ], [ %20248, %Flow171 ], [ %19532, %Flow169 ] %19594 = phi <4 x float> [ %19594, %Flow188 ], [ %20249, %Flow171 ], [ %19533, %Flow169 ] %19595 = phi <4 x float> [ %19595, %Flow188 ], [ %20250, %Flow171 ], [ %19534, %Flow169 ] %19596 = phi <4 x float> [ %19596, %Flow188 ], [ %20251, %Flow171 ], [ %19535, %Flow169 ] %19597 = phi i32 [ %19597, %Flow188 ], [ %20252, %Flow171 ], [ %19536, %Flow169 ] %19598 = phi i32 [ %19598, %Flow188 ], [ %20253, %Flow171 ], [ %19537, %Flow169 ] %19599 = phi i32 [ %19599, %Flow188 ], [ %20254, %Flow171 ], [ %19538, %Flow169 ] %19600 = phi <4 x float> [ %19600, %Flow188 ], [ %20255, %Flow171 ], [ %19539, %Flow169 ] %19601 = phi <4 x float> [ %19601, %Flow188 ], [ %20256, %Flow171 ], [ %19540, %Flow169 ] %19609 = phi float [ %19609, %Flow188 ], [ undef, %Flow171 ], [ %19548, %Flow169 ] %19610 = phi float [ %19610, %Flow188 ], [ undef, %Flow171 ], [ %19549, %Flow169 ] %19611 = phi float [ %19611, %Flow188 ], [ undef, %Flow171 ], [ %19550, %Flow169 ] %19612 = phi i32 [ %19612, %Flow188 ], [ undef, %Flow171 ], [ %19551, %Flow169 ] %19613 = phi i32 [ %19613, %Flow188 ], [ undef, %Flow171 ], [ %19552, %Flow169 ] %19625 = phi i1 [ %19625, %Flow188 ], [ %20257, %Flow171 ], [ %19569, %Flow169 ] %19627 = phi i1 [ %19627, %Flow188 ], [ %20258, %Flow171 ], [ %19571, %Flow169 ] -- You are receiving this mail because: You are the assignee for the bug. --1412956100.34B12.5989 Date: Fri, 10 Oct 2014 15:48:20 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8"

Comment # 7 on bug 84232 from 
Another thought: it seems PHINode that contain itself are also a product of
StructurizeCFG! After running `opt-3.5 -S -structurizecfg kernel.ll >
kernel-scfg.ll` on the kernel from attached blender output, kernel-scfg.ll
contains phinode that reference themselves directly... While kernel.ll did not
contain such PHINodes.

grep -P '(%\S+) = phi.*\1' kernel-scfg.ll 
  %18919 = phi float [ %18919, %Flow196 ], [ %19044, %Flow162 ], [ %18839,
%18838 ]
  %18920 = phi float [ %18920, %Flow196 ], [ %18915, %Flow162 ], [ %18840,
%18838 ]
  %18921 = phi <4 x float> addrspace(1)* [ %18921, %Flow196 ], [ %18896,
%Flow162 ], [ %18841, %18838 ]
  %18922 = phi i32 [ %18922, %Flow196 ], [ %18895, %Flow162 ], [ %18842, %18838
]
  %18923 = phi i32 [ %18923, %Flow196 ], [ %18894, %Flow162 ], [ %18843, %18838
]
  %19208 = phi i64 [ %19208, %Flow195 ], [ %indvars.iv.next.i.i, %Flow164 ], [
%18953, %Flow161 ]
  %19209 = phi float [ %19209, %Flow195 ], [ %19056, %Flow164 ], [ %18954,
%Flow161 ]
  %19210 = phi float [ %19210, %Flow195 ], [ %19055, %Flow164 ], [ %18955,
%Flow161 ]
  %19211 = phi float [ %19211, %Flow195 ], [ %19054, %Flow164 ], [ %18956,
%Flow161 ]
  %19212 = phi i32 [ %19212, %Flow195 ], [ %19053, %Flow164 ], [ %18957,
%Flow161 ]
  %19213 = phi i32 [ %19213, %Flow195 ], [ %19052, %Flow164 ], [ %18958,
%Flow161 ]
  %19227 = phi i1 [ %19227, %Flow195 ], [ %19059, %Flow164 ], [ true, %Flow161
]
  %19590 = phi <4 x float> [ %19590, %Flow188 ], [ %20245, %Flow171 ], [
%19529, %Flow169 ]
  %19591 = phi <4 x float> [ %19591, %Flow188 ], [ %20246, %Flow171 ], [
%19530, %Flow169 ]
  %19592 = phi float [ %19592, %Flow188 ], [ %20247, %Flow171 ], [ %19531,
%Flow169 ]
  %19593 = phi <4 x float> [ %19593, %Flow188 ], [ %20248, %Flow171 ], [
%19532, %Flow169 ]
  %19594 = phi <4 x float> [ %19594, %Flow188 ], [ %20249, %Flow171 ], [
%19533, %Flow169 ]
  %19595 = phi <4 x float> [ %19595, %Flow188 ], [ %20250, %Flow171 ], [
%19534, %Flow169 ]
  %19596 = phi <4 x float> [ %19596, %Flow188 ], [ %20251, %Flow171 ], [
%19535, %Flow169 ]
  %19597 = phi i32 [ %19597, %Flow188 ], [ %20252, %Flow171 ], [ %19536,
%Flow169 ]
  %19598 = phi i32 [ %19598, %Flow188 ], [ %20253, %Flow171 ], [ %19537,
%Flow169 ]
  %19599 = phi i32 [ %19599, %Flow188 ], [ %20254, %Flow171 ], [ %19538,
%Flow169 ]
  %19600 = phi <4 x float> [ %19600, %Flow188 ], [ %20255, %Flow171 ], [
%19539, %Flow169 ]
  %19601 = phi <4 x float> [ %19601, %Flow188 ], [ %20256, %Flow171 ], [
%19540, %Flow169 ]
  %19609 = phi float [ %19609, %Flow188 ], [ undef, %Flow171 ], [ %19548,
%Flow169 ]
  %19610 = phi float [ %19610, %Flow188 ], [ undef, %Flow171 ], [ %19549,
%Flow169 ]
  %19611 = phi float [ %19611, %Flow188 ], [ undef, %Flow171 ], [ %19550,
%Flow169 ]
  %19612 = phi i32 [ %19612, %Flow188 ], [ undef, %Flow171 ], [ %19551,
%Flow169 ]
  %19613 = phi i32 [ %19613, %Flow188 ], [ undef, %Flow171 ], [ %19552,
%Flow169 ]
  %19625 = phi i1 [ %19625, %Flow188 ], [ %20257, %Flow171 ], [ %19569,
%Flow169 ]
  %19627 = phi i1 [ %19627, %Flow188 ], [ %20258, %Flow171 ], [ %19571,
%Flow169 ]

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  • You are the assignee for the bug.
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