Bjorn Pettersson 37a12e715f [DebugInfo] Do not extend range for physreg in LiveDebugVariables ... Summary: A DBG_VALUE that is referring to a physical register is valid up until the next def of the register, or the end of the basic block that it belongs to. LiveDebugVariables is computing live intervals (slot index ranges) for DBG_VALUE instructions, before regalloc, in order to be able to re-insert DBG_VALUE instructions again after regalloc. When the DBG_VALUE is mapping a variable to a physical register we do not need to compute the range. We should simply re-insert the DBG_VALUE at the start position. The problem that was found, resulting in this patch, was a situation when the DBG_VALUE was the last real use of the physical register. The computeIntervals/extendDef methods extended the range to cover the whole basic block, even though the physical register very well could be allocated to some virtual register inside the basic block. So the extended range could not be trusted. This patch is a preparation for https://reviews.llvm.org/D38229, where the goal is to insert DBG_VALUE after each new definition of a variable, even if the virtual registers that the variable was connected to has been coalesced into using the same physical register (e.g. due to two address instructions). For more info see https://bugs.llvm.org/show_bug.cgi?id=34545 Reviewers: aprantl, rnk, echristo Reviewed By: aprantl Subscribers: Ka-Ka, llvm-commits Differential Revision: https://reviews.llvm.org/D38140 llvm-svn: 314414		2017-09-28 13:10:06 +00:00
..
AArch64	llvm-dwarfdump: Make -brief the default and add a -verbose option instead.	2017-09-11 23:05:20 +00:00
AMDGPU	llvm-dwarfdump: Make -brief the default and add a -verbose option instead.	2017-09-11 23:05:20 +00:00
ARM	llvm-dwarfdump: Make -brief the default and add a -verbose option instead.	2017-09-11 23:05:20 +00:00
COFF	Re-land "Fix Bug 30978 by emitting cv file checksums."	2017-09-19 18:14:45 +00:00
Generic	[test] Don't verify .debug_line offsets in bitcode tests.	2017-09-27 10:23:34 +00:00
Inputs	Update testcase that was XFAILed on Darwin for llvm-dwarfdump change.	2017-09-13 22:30:43 +00:00
Lanai
Mips	[dwarfdump] Add verbose output for .debug-line section	2017-09-21 20:15:30 +00:00
MIR	[DebugInfo] Do not extend range for physreg in LiveDebugVariables	2017-09-28 13:10:06 +00:00
MSP430	Parse and print DIExpressions inline to ease IR and MIR testing	2017-08-23 20:31:27 +00:00
PDB	[llvm-pdbutil] Print detailed S_UDT stats.	2017-08-31 20:43:22 +00:00
PowerPC	Canonicalize the representation of empty an expression in DIGlobalVariableExpression	2017-08-30 18:06:51 +00:00
Sparc	llvm-dwarfdump: Make -brief the default and add a -verbose option instead.	2017-09-11 23:05:20 +00:00
SystemZ	llvm-dwarfdump: Make -brief the default and add a -verbose option instead.	2017-09-11 23:05:20 +00:00
WebAssembly	[WebAssembly] Update debug info test after r312144	2017-08-30 19:54:08 +00:00
X86	[test] Don't verify .debug_line offsets in bitcode tests.	2017-09-27 10:23:34 +00:00
arm-relocs.test	llvm-dwarfdump: Make -brief the default and add a -verbose option instead.	2017-09-11 23:05:20 +00:00
debuglineinfo-macho.test
debuglineinfo.test
debugmacinfo.test	llvm-dwarfdump: Replace -debug-dump=sect option with individual options.	2017-09-11 22:59:45 +00:00
dwarfdump-64-bit-dwarf.test	llvm-dwarfdump: Replace -debug-dump=sect option with individual options.	2017-09-11 22:59:45 +00:00
dwarfdump-accel.test	llvm-dwarfdump: Make -brief the default and add a -verbose option instead.	2017-09-11 23:05:20 +00:00
dwarfdump-debug-frame-simple.test	[dwarfdump] Make .eh_frame an alias for .debug_frame	2017-09-18 14:15:57 +00:00
dwarfdump-decompression-corrupt.test	[Object] Verify object sizes before handing out StringRefs pointing out	2017-08-31 12:27:10 +00:00
dwarfdump-decompression-error.test	[llvm-dwarfdump] - Print an error message if section decompression failed.	2017-05-05 10:52:39 +00:00
dwarfdump-dump-flags.test	llvm-dwarfdump: automatically dump both regular and .dwo variant of sections	2017-09-13 22:09:01 +00:00
dwarfdump-dump-gdbindex.test	llvm-dwarfdump: Replace -debug-dump=sect option with individual options.	2017-09-11 22:59:45 +00:00
dwarfdump-dwp.test	llvm-dwarfdump: automatically dump both regular and .dwo variant of sections	2017-09-13 22:09:01 +00:00
dwarfdump-header.test	llvm-dwarfdump: Make -brief the default and add a -verbose option instead.	2017-09-11 23:05:20 +00:00
dwarfdump-implicit-const.test	llvm-dwarfdump: Replace -debug-dump=sect option with individual options.	2017-09-11 22:59:45 +00:00
dwarfdump-invalid.test
dwarfdump-line-dwo.test	llvm-dwarfdump: Make -brief the default and add a -verbose option instead.	2017-09-11 23:05:20 +00:00
dwarfdump-macho-relocs.test	llvm-dwarfdump: Replace -debug-dump=sect option with individual options.	2017-09-11 22:59:45 +00:00
dwarfdump-macho-universal.test	Adapt more testcases for llvm-dwarfdump changes.	2017-09-14 17:27:03 +00:00
dwarfdump-objc.test	llvm-dwarfdump: Make -brief the default and add a -verbose option instead.	2017-09-11 23:05:20 +00:00
dwarfdump-pubnames.test	llvm-dwarfdump: Replace -debug-dump=sect option with individual options.	2017-09-11 22:59:45 +00:00
dwarfdump-ranges.test	llvm-dwarfdump: Make -brief the default and add a -verbose option instead.	2017-09-11 23:05:20 +00:00
dwarfdump-str-offsets-dwp.test	llvm-dwarfdump: Make -brief the default and add a -verbose option instead.	2017-09-11 23:05:20 +00:00
dwarfdump-str-offsets-invalid.test	llvm-dwarfdump: Make -brief the default and add a -verbose option instead.	2017-09-11 23:05:20 +00:00
dwarfdump-str-offsets.test	llvm-dwarfdump: Make -brief the default and add a -verbose option instead.	2017-09-11 23:05:20 +00:00
dwarfdump-type-units.test	llvm-dwarfdump: Make -brief the default and add a -verbose option instead.	2017-09-11 23:05:20 +00:00
dwarfdump-zlib.test	llvm-dwarfdump: Make -brief the default and add a -verbose option instead.	2017-09-11 23:05:20 +00:00
dwo.ll	llvm-dwarfdump: Replace -debug-dump=sect option with individual options.	2017-09-11 22:59:45 +00:00
invalid-relocations.test	[DWARF] - Add testcase for checking message about broken relocations.	2017-07-11 12:29:07 +00:00
llvm-symbolizer-split-dwarf-empty.test	[llvm] Get rid of "%T" expansions	2017-08-15 20:29:24 +00:00
llvm-symbolizer-zlib.test
llvm-symbolizer.test	Migrate llvm-symbolizer tests to not use %T	2017-09-08 21:10:01 +00:00
macro_link.ll
member-pointers.o
missing-abstract-variable.o
omit-empty.ll	DebugInfo: Consider a CU containing only local imported entities to be 'empty'	2017-07-28 03:06:25 +00:00
pr34186.ll	[Verifier] Stop accepting broken DIGlobalVariable(s).	2017-09-24 01:06:35 +00:00
pr34672.ll	[Verifier] Stop accepting broken DIGlobalVariable(s).	2017-09-24 01:06:35 +00:00
skeletoncu.ll	llvm-dwarfdump: Replace -debug-dump=sect option with individual options.	2017-09-11 22:59:45 +00:00
strip-DIGlobalVariable.ll
strip-loop-metadata.ll	Improve DebugInfo/strip-loop-metadata.ll test	2017-03-31 17:51:12 +00:00
typeunit-header.test	llvm-dwarfdump: Make -brief the default and add a -verbose option instead.	2017-09-11 23:05:20 +00:00
unrolled-loop-remainder.ll	[LoopUnroll][DebugInfo] Don't add metadata to unrolled remainder loop	2017-09-04 08:12:16 +00:00