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Yonghong Song 419f317716 bpf: fix a bug in dag2dag optimization for loads from readonly section
The reference '&' is missing in the function parameter. If there are
back-to-back optimizations in terms of dag node list like below:
  t29: i64,ch = load<LD4[bitcast (%struct.test_t* @test.t to i8*)+12](dereferenceable), zext from i32> t3, t43, undef:i64
  t34: i64,ch = load<LD4[bitcast (%struct.test_t* @test.t to i8*)](dereferenceable), zext from i32> t3, t41, undef:i64
The bug will trigger a segfault for the added test case remove_truncate_5.ll:
  LLVMSymbolizer: error reading file: No such file or directory
  #0 0x000000000241c4d9 (llc+0x241c4d9)
  #1 0x000000000241c56a (llc+0x241c56a)
  #2 0x000000000241aa50 (llc+0x241aa50)
  ...
  #22 0x0000000000fd5edf (llc+0xfd5edf)
  #23 0x00007f0fe03bec05 __libc_start_main (/lib64/libc.so.6+0x21c05)
  #24 0x0000000000fd3e69 (llc+0xfd3e69)
  ...
  Segmentation fault

Signed-off-by: Yonghong Song <yhs@fb.com>
llvm-svn: 325267
2018-02-15 17:06:45 +00:00
bindings [NFC] fix trivial typos in comments and documents 2018-01-26 08:15:29 +00:00
cmake Generate PDB files for profiling even in Release build. 2018-02-07 19:37:52 +00:00
docs [ARM] Allow 64- and 128-bit types with 't' inline asm constraint 2018-02-15 14:44:22 +00:00
examples [ORC] Consolidate RTDyldObjectLinkingLayer GetMemMgr and GetResolver into a 2018-02-14 22:13:02 +00:00
include [InstCombine] allow X / C -> X * (1.0/C) for vector splat FP constants 2018-02-15 13:55:52 +00:00
lib bpf: fix a bug in dag2dag optimization for loads from readonly section 2018-02-15 17:06:45 +00:00
projects [cmake] Support moving debuginfo-tests to llvm/projects 2017-12-12 17:06:08 +00:00
resources
runtimes [CMake] Support for cross-compilation when build runtimes 2018-01-08 23:50:59 +00:00
test bpf: fix a bug in dag2dag optimization for loads from readonly section 2018-02-15 17:06:45 +00:00
tools Revert r325224 "Report fatal error in the case of out of memory" 2018-02-15 09:45:59 +00:00
unittests Revert r325224 "Report fatal error in the case of out of memory" 2018-02-15 09:45:59 +00:00
utils Revert r325107 (case folding DJB hash) and subsequent build fix 2018-02-14 11:06:39 +00:00
.arcconfig [llvm] Set up .arcconfig to point to Diffusion L repository 2018-01-12 15:37:41 +00:00
.clang-format
.clang-tidy
.gitattributes [MC] Fix regression tests on Windows when git “core.autocrlf” is set to true. 2017-11-17 21:59:43 +00:00
.gitignore
CMakeLists.txt CMake: Allow specifying arbitrary CCACHE parameters 2018-02-09 23:25:23 +00:00
CODE_OWNERS.TXT Update my email addresses, NFC. 2017-10-26 10:16:54 +00:00
configure
CREDITS.TXT Add myself to CREDITS.txt 2018-01-29 17:02:34 +00:00
LICENSE.TXT
llvm.spec.in
LLVMBuild.txt
README.txt Test commit access 2017-08-18 02:39:28 +00:00
RELEASE_TESTERS.TXT Update my email addresses, NFC. 2017-10-26 10:16:54 +00:00

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