Reid Kleckner 53ce05960e [codeview] Align symbol records to save 441MB during linking clang.pdb ... In PDBs, symbol records must be aligned to four bytes. However, in the object file, symbol records may not be aligned. MSVC does not pad out symbol records to make sure they are aligned. That means the linker has to do extra work to insert the padding. Currently, LLD calculates the required space with alignment, and copies each record one at a time while padding them out to the correct size. It has a fast path that avoids this copy when the records are already aligned. This change fixes a bug in that codepath so that the copy is actually saved, and tweaks LLVM's symbol record emission to align symbol records. Here's how things compare when doing a plain clang Release+PDB build: - objs are 0.65% bigger (negligible) - link is 3.3% faster (negligible) - saves allocating 441MB - new LLD high water mark is ~1.05GB llvm-svn: 349431		2018-12-18 01:14:05 +00:00
..
AArch64	test/DebugInfo: Convert some tests to MIR	2018-11-02 01:31:52 +00:00
AMDGPU	AMDGPU: Fix tests using old number for constant address space	2018-09-10 02:54:25 +00:00
ARM	test/DebugInfo: Convert some tests to MIR	2018-11-02 01:31:52 +00:00
COFF	[codeview] Align symbol records to save 441MB during linking clang.pdb	2018-12-18 01:14:05 +00:00
Generic	[Debuginfo] Prevent CodeGenPrepare from dropping debuginfo references.	2018-12-11 21:13:53 +00:00
Inputs	Revert "DebugInfo: Assume an absence of ranges or high_pc on a CU means the CU is empty (devoid of code addresses)"	2018-12-17 14:14:40 +00:00
Lanai	…
MIR	MachineOperand/MIParser: Do not print debug-use flag, infer it	2018-10-30 23:28:27 +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 overlaping FDEs error	2018-10-15 14:39:12 +00:00
NVPTX	[DebugInfo] Emit undef DBG_VALUEs when SDNodes are optimised out	2018-12-10 11:20:47 +00:00
PDB	Support skewed stream arrays.	2018-12-06 16:55:00 +00:00
PowerPC	[DWARF] - Emit the correct value for DW_AT_addr_base.	2018-09-20 09:17:36 +00:00
RISCV	[DebugInfo] Generate fixups as emitting DWARF .debug_line.	2018-08-01 02:18:06 +00:00
Sparc	[DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label.	2018-05-09 02:40:45 +00:00
SystemZ	[DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label.	2018-05-09 02:40:45 +00:00
WebAssembly	MachineOperand/MIParser: Do not print debug-use flag, infer it	2018-10-30 23:28:27 +00:00
X86	Recommit r348806: DebugInfo: Use symbol difference for CU length to simplify assembly reading/editing	2018-12-18 01:06:09 +00:00
arm-relocs.test	…
check-debugify-preserves-analyses.ll	[opt] Introduce -strip-named-metadata	2018-06-05 00:56:08 +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	[Debugify] Add a quiet mode to suppress warnings	2018-06-06 19:05:41 +00:00
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	…
debuglineinfo-path.ll	Specify REQUIRES: default_triple in two debuginfo tests	2018-11-06 00:16:32 +00:00
debuglineinfo.test	Revert "DebugInfo: Assume an absence of ranges or high_pc on a CU means the CU is empty (devoid of code addresses)"	2018-12-17 14:14:40 +00:00
debugmacinfo.test	…
dwarfdump-64-bit-dwarf.test	…
dwarfdump-accel.test	…
dwarfdump-debug-frame-simple.test	…
dwarfdump-decompression-corrupt.test	…
dwarfdump-decompression-error.test	…
dwarfdump-dump-flags.test	…
dwarfdump-dump-gdbindex.test	[DWARF] Fix typo, .gnu_index -> .gdb_index	2018-11-02 20:34:40 +00:00
dwarfdump-dwp.test	…
dwarfdump-implicit-const.test	…
dwarfdump-invalid-line-table.test	…
dwarfdump-invalid.test	…
dwarfdump-macho-relocs.test	…
dwarfdump-macho-universal.test	[dsymutil] Rename llvm-dsymutil -> dsymutil	2018-03-18 11:38:41 +00:00
dwarfdump-objc.test	…
dwarfdump-pubnames.test	…
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	…
dwarfdump-zlib.test	…
dwo.ll	…
invalid-relocations.test	…
llvm-symbolizer-split-dwarf-empty.test	…
llvm-symbolizer-split-dwarf-no-skel-address.test	Revert "DebugInfo: Assume an absence of ranges or high_pc on a CU means the CU is empty (devoid of code addresses)"	2018-12-17 14:14:40 +00:00
llvm-symbolizer-tu.test	llvm-symbolizer: Fix bug related to TUs interfering with symbolizing	2018-09-11 02:04:45 +00:00
llvm-symbolizer-zlib.test	…
llvm-symbolizer.test	Revert "DebugInfo: Assume an absence of ranges or high_pc on a CU means the CU is empty (devoid of code addresses)"	2018-12-17 14:14:40 +00:00
macro_link.ll	…
member-pointers.o	…
missing-abstract-variable.o	…
omit-empty.ll	[DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label.	2018-05-09 02:40:45 +00:00
pr34186.ll	…
pr34672.ll	…
precomp.test	[Debuginfo][COFF] Minimal serialization support for precompiled types records	2018-04-09 20:17:56 +00:00
skeletoncu.ll	…
strip-DIGlobalVariable.ll	…
strip-loop-metadata.ll	[DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label.	2018-05-09 02:40:45 +00:00
strip-module-flags.ll	[opt] Introduce -strip-named-metadata	2018-06-05 00:56:08 +00:00
typeunit-header.test	…
unrolled-loop-remainder.ll	[DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label.	2018-05-09 02:40:45 +00:00