David Majnemer 19d1ebc725 [X86] Add intrinsics for reading and writing to the flags register ... LLVM's targets need to know if stack pointer adjustments occur after the prologue. This is needed to correctly determine if the red-zone is appropriate to use or if a frame pointer is required. Normally, LLVM can figure this out very precisely by reasoning about the contents of the MachineFunction. There is an interesting corner case: inline assembly. The vast majority of inline assembly which will perform a push or pop is done so to pair up with pushf or popf as appropriate. Unfortunately, this inline assembly doesn't mark the stack pointer as clobbered because, well, it isn't. The stack pointer is decremented and then immediately incremented. Because of this, LLVM was changed in r256456 to conservatively assume that inline assembly contain a sequence of stack operations. This is unfortunate because the vast majority of inline assembly will not end up manipulating the stack pointer in any way at all. Instead, let's provide a more principled solution: an intrinsic. FWIW, other compilers (MSVC and GCC among them) also provide this functionality as an intrinsic. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256685 91177308-0d34-0410-b5e6-96231b3b80d8		2016-01-01 06:50:01 +00:00
..
AArch64	Clean up the processing of dbg.value in various places	2015-12-19 02:02:44 +00:00
ARM	Update DebugInfo tests for the change in DEBUG_VALUE output in r253338.	2015-11-17 16:15:11 +00:00
COFF	[X86] Add intrinsics for reading and writing to the flags register	2016-01-01 06:50:01 +00:00
Generic	Move llvm/test/DebugInfo/Generic/safestack-byval.ll to X86. It depends on x86-64.	2015-12-01 10:07:37 +00:00
Inputs	dwarfdump: Use the index to find the right abbrev offset in DWP files	2015-11-17 00:39:55 +00:00
Mips	Clean up the processing of dbg.value in various places	2015-12-19 02:02:44 +00:00
MIR	Recommit LiveDebugValues pass after fixing a couple of minor issues.	2015-12-16 11:09:48 +00:00
PDB	s/NumFiles/NumStreams/	2015-10-15 01:39:00 +00:00
PowerPC	DI: Disallow uniquable DICompileUnits	2015-08-03 17:26:41 +00:00
Sparc	DI: Reverse direction of subprogram -> function edge.	2015-11-05 22:03:56 +00:00
SystemZ	DI: Reverse direction of subprogram -> function edge.	2015-11-05 22:03:56 +00:00
X86	Fix PR24563 (LiveDebugVariables unconditionally propagates all DBG_VALUEs)	2015-12-21 20:03:00 +00:00
arm-relocs.test	Add support for the R_ARM_ABS32 relocation.	2014-04-03 02:27:00 +00:00
debuglineinfo-macho.test	[DWARF] Fix a bug in line info handling	2015-05-31 23:37:04 +00:00
debuglineinfo.test	[DWARF] Fix a bug in line info handling	2015-05-31 23:37:04 +00:00
debugmacinfo.test	dwarfdump: Added macro support to llvm-dwarfdump tool.	2015-11-12 09:38:54 +00:00
dwarfdump-64-bit-dwarf.test	DebugInfo: .debug_line DWARF64 support	2015-05-28 15:38:17 +00:00
dwarfdump-accel.test	Fix a bunch of trivial cases of 'CHECK[^:]*$' in the tests. NFCI	2015-08-10 19:01:27 +00:00
dwarfdump-debug-frame-simple.test	[dwarfdump] Make debug_frame dump actually useful.	2015-02-25 21:30:22 +00:00
dwarfdump-debug-loc-simple.test	Spell correct (s/begining/beginning/)	2013-06-19 21:42:05 +00:00
dwarfdump-dump-flags.test	[dwarfdump] Ignore scattered relocations for mach-o.	2015-07-31 20:22:50 +00:00
dwarfdump-dwp.test	dwarfdump: Correctly indentify the indicies for DWP records	2015-12-03 18:41:59 +00:00
dwarfdump-invalid.test	Make llvm-dwarfdump exit with non-zero exit code if error was occured.	2015-06-25 23:40:15 +00:00
dwarfdump-line-dwo.test	llvm-dwarfdump: Support for debug_line.dwo section for file names for type units under fission.	2014-02-24 23:58:54 +00:00
dwarfdump-macho-relocs.test	[dwarfdump] Do not apply relocations in mach-o files if there is no LoadedObjectInfo.	2015-08-23 04:44:21 +00:00
dwarfdump-macho-universal.test	Don't use test inputs from other directories.	2015-08-03 11:59:45 +00:00
dwarfdump-objc.test	[dwarfdump] Prettyprint DW_AT_APPLE_property_attribute bitfield values.	2014-10-10 15:51:10 +00:00
dwarfdump-pubnames.test	DebugInfo: Make pubnames header printing similar to unit header printing	2013-11-01 17:53:30 +00:00
dwarfdump-ranges.test	[dwarfdump] Dump DW_AT_ranges values inline in the debug_info dump.	2014-10-23 04:08:34 +00:00
dwarfdump-type-units.test	llvm-dwarfdump: support for emitting only the debug_types section using -debug-dump	2013-11-19 00:29:42 +00:00
dwarfdump-zlib.test	Kill symbolization functionality in llvm-dwarfdump. We have llvm-symbolizer for that.	2014-05-19 18:45:32 +00:00
dwo.ll	Add REQUIRES: default_triple to these testcases.	2015-09-24 00:35:14 +00:00
llvm-symbolizer-zlib.test	Kill symbolization functionality in llvm-dwarfdump. We have llvm-symbolizer for that.	2014-05-19 18:45:32 +00:00
llvm-symbolizer.test	Fix the test case for Windows.	2015-11-04 01:09:37 +00:00
member-pointers.o	Revert "Revert "DI: Fold constant arguments into a single MDString""	2014-10-03 20:01:09 +00:00
missing-abstract-variable.o	Revert "Revert "DI: Fold constant arguments into a single MDString""	2014-10-03 20:01:09 +00:00
skeletoncu.ll	[Hexagon] XFAILing test while diagnosing backend error.	2015-10-01 22:14:05 +00:00