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llvm-project/llvm/test/DebugInfo
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Jeremy Morse 0ae5498146 [DebugInfo] Remove invalidated locations during LiveDebugValues 
LiveDebugValues gives variable locations to blocks, but it should also take
away. There are various circumstances where a variable location is known
until a loop backedge with a different location is detected. In those
circumstances, where there's no agreement on the variable location, it
should be undef / removed, otherwise we end up picking a location that's
valid on some loop iterations but not others.

However, LiveDebugValues doesn't currently do this, see the new testcase
attached. Without this patch, the location of !3 is assumed to be %bar
through the loop. Once it's added to the In-Locations list, it's never
removed, even though the later dbg.value(0... of !3 makes the location
un-knowable.

This patch checks during block-location-joining to see whether any
previously-present locations have been removed in a predecessor. If they
have, the live-ins have changed, and the block needs reprocessing.
Similarly, in transferTerminator, assign rather than |= the Out-Locations
after processing a block, as we may have deleted some previously valid
locations. This will mean that LiveDebugValues performs more propagation
 -- but that's necessary for it being correct.

Differential Revision: https://reviews.llvm.org/D66599

llvm-svn: 369778
 		2019-08-23 16:33:42 +00:00
..
AArch64 [DebugInfo@O2][LoopVectorize] pr39024: Vectorized code linenos step through loop even after completion 2019-06-19 10:50:47 +00:00
AMDGPU AMDGPU: Fix tests using old number for constant address space 2018-09-10 02:54:25 +00:00
ARM Rename ExpandISelPseudo->FinalizeISel, delay register reservation 2019-06-19 00:25:39 +00:00
COFF [DebugInfo] Remove invalidated locations during LiveDebugValues 2019-08-23 16:33:42 +00:00
Generic [DebugInfo] Consider debug label scope has an extra lexical block file 2019-08-14 17:58:45 +00:00
Inputs [DebugInfo] Add column info for inline sites 2019-07-12 19:25:45 +00:00
Lanai
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MIR [DebugInfo] Avoid dropping location info across block boundaries 2019-08-21 09:22:31 +00:00
MSP430 MachineOperand/MIParser: Do not print debug-use flag, infer it 2018-10-30 23:28:27 +00:00
Mips [mips][micromips] Fix how values in .gcc_except_table are calculated 2019-02-07 22:57:33 +00:00
NVPTX [DebugInfo] Add column info for inline sites 2019-07-12 19:25:45 +00:00
PDB Make pdbdump-objfilename test work again 2019-07-09 17:02:51 +00:00
PowerPC [DWARF] - Emit the correct value for DW_AT_addr_base. 2018-09-20 09:17:36 +00:00
RISCV [DebugInfo] Some fields do not need relocations even relax is enabled. 2019-07-19 06:10:36 +00:00
Sparc Remove irrelevant references to legacy git repositories from 2019-01-15 16:18:52 +00:00
SystemZ [lit] Delete empty lines at the end of lit.local.cfg NFC 2019-06-17 09:51:07 +00:00
WebAssembly [WebAssembly] Implement tail calls and unify tablegen call classes 2019-06-26 16:17:15 +00:00
X86 [DebugInfo] Remove invalidated locations during LiveDebugValues 2019-08-23 16:33:42 +00:00
arange-overlap.test [llvm-symbolizer][test] Extract tests from llvm-symbolizer.test and simplify (#1) 2019-01-31 14:11:17 +00:00
arm-relocs.test
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check-debugify-preserves-analyses.ll
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cross-cu-inlining.test [llvm-symbolizer][test] Extract tests from llvm-symbolizer.test and simplify (#1) 2019-01-31 14:11:17 +00:00
cross-cu-scope.ll Specify REQUIRES: default_triple in two debuginfo tests 2018-11-06 00:16:32 +00:00
debugify-bogus-dbg-value.ll [Debugify] Allow unsigned values narrower than their variables 2018-07-06 17:32:40 +00:00
debugify-each.ll
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debugify-export.ll [Debugify] Export per-pass debug info loss statistics 2018-07-24 00:41:29 +00:00
debugify-report-missing-locs-only.ll Tighten up a test for -check-debugify, NFC 2018-07-02 17:08:36 +00:00
debugify.ll [DebugInfo] IR/Bitcode changes for DISubprogram flags. 2018-11-28 21:14:32 +00:00
debuglineinfo-macho.test
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debuglineinfo-path.ll [llvm-nm][llvm-readelf] Avoid single-dash -long-option in tests 2019-04-27 16:12:14 +00:00
debuglineinfo.test Reapply: DebugInfo: Assume an absence of ranges or high_pc on a CU means the CU is empty (devoid of code addresses) 2018-12-21 22:25:01 +00:00
debugmacinfo.test
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dwarfdump-64-bit-dwarf.test [CommandLine] Don't allow unlimitted dashes for options. Part 1 or 5 2019-04-29 18:34:18 +00:00
dwarfdump-accel.test
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dwarfdump-bad-lookup-address.test [DWARF] check whether the DIE is valid before querying for information 2019-04-03 17:13:45 +00:00
dwarfdump-debug-frame-simple.test
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dwarfdump-decompression-corrupt.test
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dwarfdump-decompression-error.test
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dwarfdump-dump-flags.test
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dwarfdump-dump-gdbindex.test [llvm-dwarfdump] --gdb-index: fix uninitialized TuListOffset 2019-06-19 13:51:29 +00:00
dwarfdump-dwp.test
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dwarfdump-implicit-const.test
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dwarfdump-invalid-line-table.test
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dwarfdump-invalid.test
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dwarfdump-macho-relocs.test
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dwarfdump-macho-universal.test
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dwarfdump-objc.test
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dwarfdump-pubnames.test
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dwarfdump-ranges.test Revert "[DWARF] reposting r342048, which was reverted in r342056 due to buildbot errors. Adjusted 2 test cases for ARM and darwin and fixed a bug with the original change in dsymutil." 2018-09-17 15:40:01 +00:00
dwarfdump-type-units.test
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dwarfdump-zlib.test
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dwo.ll
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gcc-local-mem-func.test [llvm-symbolizer][test] Extract tests from llvm-symbolizer.test and simplify (#1) 2019-01-31 14:11:17 +00:00
high-pc-constant.test [llvm-symbolizer][test] Extract tests from llvm-symbolizer.test and simplify (#1) 2019-01-31 14:11:17 +00:00
invalid-relocations.test [yaml2obj][obj2yaml] - Change how symbol's binding is descibed when parsing/dumping. 2019-04-03 14:53:42 +00:00
macro_link.ll
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member-pointers.o
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missing-abstract-variable.o
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omit-empty.ll
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pr34186.ll
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pr34672.ll
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precomp.test [llvm-readobj] Change -long-option to --long-option in tests. NFC 2019-05-01 05:27:20 +00:00
skeletoncu.ll
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strip-DIGlobalVariable.ll
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strip-loop-metadata.ll
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strip-module-flags.ll
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symbolize-64bit-address.test [DebugInfo][llvm-symbolizer]Add some tests for edge cases when symbolizing 2019-02-06 10:13:14 +00:00
symbolize-absolute-path-in-debug-line.s [DebugInfo][llvm-symbolizer]Add some tests for edge cases when symbolizing 2019-02-06 10:13:14 +00:00
symbolize-demangling.s [llvm-symbolizer][test] Extract tests from llvm-symbolizer.test and simplify (#2) 2019-01-31 14:17:33 +00:00
symbolize-directory.s Fix more Windows bots after r360015. 2019-05-06 19:12:25 +00:00
symbolize-gnu-debuglink-fallback.test [DebugInfo] Fix /usr/lib/debug llvm-symbolizer lookup with relative paths 2019-02-11 18:05:48 +00:00
symbolize-gnu-debuglink-no-realpath.test [DebugInfo] Fix mkdir use in test 2019-02-01 21:14:21 +00:00
symbolize-gnu-debuglink.test [llvm-symbolizer][test] Extract tests from llvm-symbolizer.test and simplify (#3) 2019-01-31 14:22:50 +00:00
symbolize-inlined.test [llvm-symbolizer][test] Extract tests from llvm-symbolizer.test and simplify (#3) 2019-01-31 14:22:50 +00:00
symbolize-macho-universal-unknown-arch.test [llvm-symbolizer][test] Extract tests from llvm-symbolizer.test and simplify (#2) 2019-01-31 14:17:33 +00:00
symbolize-macho-universal.test [llvm-symbolizer][test] Extract tests from llvm-symbolizer.test and simplify (#2) 2019-01-31 14:17:33 +00:00
symbolize-missing-file.test [llvm-symbolizer][test] Extract tests from llvm-symbolizer.test and simplify (#3) 2019-01-31 14:22:50 +00:00
symbolize-no-debug-str.test [DebugInfo][llvm-symbolizer]Add some tests for edge cases when symbolizing 2019-02-06 10:13:14 +00:00
symbolize-shared-abbrev.s [DebugInfo][llvm-symbolizer]Add some tests for edge cases when symbolizing 2019-02-06 10:13:14 +00:00
symbolize-split-dwarf-empty.test [llvm-symbolizer][test] Rename and tweak tests using llvm-symbolizer 2019-02-01 10:24:55 +00:00
symbolize-split-dwarf-no-skel-address.test [llvm-symbolizer][test] Rename and tweak tests using llvm-symbolizer 2019-02-01 10:24:55 +00:00
symbolize-stripped-sections.test [DebugInfo][llvm-symbolizer]Add some tests for edge cases when symbolizing 2019-02-06 10:13:14 +00:00
symbolize-stripped.test [llvm-symbolizer][test] Extract tests from llvm-symbolizer.test and simplify (#1) 2019-01-31 14:11:17 +00:00
symbolize-tu.test [llvm-symbolizer][test] Rename and tweak tests using llvm-symbolizer 2019-02-01 10:24:55 +00:00
symbolize-zlib.test [llvm-symbolizer][test] Rename and tweak tests using llvm-symbolizer 2019-02-01 10:24:55 +00:00
symbolize.test [llvm-symbolizer][test] Rename and tweak tests using llvm-symbolizer 2019-02-01 10:24:55 +00:00
typeunit-header.test
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unrolled-loop-remainder.ll Remove irrelevant references to legacy git repositories from 2019-01-15 16:18:52 +00:00