Jakob Stoklund Olesen
2a72bfa1b1
Hoist spills when the same value is known to be in less loopy sibling registers.
...
Stack slot real estate is virtually free compared to registers, so it is
advantageous to spill earlier even though the same value is now kept in both a
register and a stack slot.
Also eliminate redundant spills by extending the stack slot live range
underneath reloaded registers.
This can trigger a dead code elimination, removing copies and even reloads that
were only feeding spills.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127868 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-18 04:23:06 +00:00
Rafael Espindola
a26f36c597
Some release notes.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127867 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-18 04:07:44 +00:00
Ted Kremenek
289bdccddf
Tweak CrashRecoveryContextCleanup::createCleanup() to use the 'delete' cleanup as opposed to the 'destructor' cleanup (reclaims more memory).
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127865 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-18 03:46:21 +00:00
NAKAMURA Takumi
0e8d588948
tools/lto/LTOModule.cpp: Eliminate an unused variable.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127859 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-18 03:21:11 +00:00
NAKAMURA Takumi
3bc729c3b3
llvm-bcanalyzer.cpp: Tweak format string to suppress warnings on mingw32-g++.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127858 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-18 03:21:04 +00:00
Jakob Stoklund Olesen
9ef931e71c
Accept instructions that read undefined values.
...
This is not supposed to happen, but I have seen the x86 rematter getting
confused when rematerializing partial redefs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127857 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-18 03:06:04 +00:00
Jakob Stoklund Olesen
7cec179a64
Be more accurate about the slot index reading a register when dealing with defs
...
and early clobbers.
Assert when trying to find an undefined value.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127856 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-18 03:06:02 +00:00
Ted Kremenek
0597234028
Add new CrashRecoveryContextCleanup subclass: CrashRecoveryContextDeleteCleanup. This deletes the object, not just calls its destructor.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127855 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-18 03:04:18 +00:00
Rafael Espindola
49ab1207df
Check RequiresNullTerminator first, or we might read from an invalid address.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127853 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-18 02:55:51 +00:00
Eli Friedman
b4b8b0cc90
Add a target-specific branchless method for double-width relational
...
comparisons on x86. Essentially, the way this works is that SUB+SBB sets
the relevant flags the same way a double-width CMP would.
This is a substantial improvement over the generic lowering in LLVM. The output
is also shorter than the gcc-generated output; I haven't done any detailed
benchmarking, though.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127852 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-18 02:34:11 +00:00
Ted Kremenek
a4f9839701
Augment CrashRecoveryContext to have registered "cleanup" objects that can be used to release resources during a crash.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127849 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-18 02:05:11 +00:00
Eli Friedman
efdc115c82
Add some svn:ignore properties.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127847 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-18 01:24:16 +00:00
Eli Friedman
06caf2a66e
FileCheck-ize and update test.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127845 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-18 01:10:31 +00:00
Johnny Chen
5e5a40867a
The disassembler for Thumb was wrongly adding 4 to the computed imm32 offset.
...
Remove the offending logic and update the test cases.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127843 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-18 00:38:03 +00:00
Andrew Trick
f3e6774880
Remove TargetData and ValueTracking includes. I didn't mean for them to sneak in my last checkin.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127842 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-18 00:36:39 +00:00
Owen Anderson
670350bb78
There are two pseudos in this case that are Thumb mode, not one.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127840 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-17 23:52:05 +00:00
Andrew Trick
b12a754cce
Added isValidRewrite() to check the result of ScalarEvolutionExpander.
...
SCEV may generate expressions composed of multiple pointers, which can
lead to invalid GEP expansion. Until we can teach SCEV to follow strict
pointer rules, make sure no bad GEPs creep into IR.
Fixes rdar://problem/9038671.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127839 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-17 23:51:11 +00:00
Andrew Trick
ead71d59a7
whitespace
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127837 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-17 23:46:48 +00:00
Rafael Espindola
9916d2ac39
Use RequiresNullTerminator to create buffers without a null terminator
...
instead of copying.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127835 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-17 22:18:42 +00:00
Devang Patel
813c9a0f19
Try to not lose variable's debug info during instcombine.
...
This is done by lowering dbg.declare intrinsic into dbg.value intrinsic.
Radar 9143931.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127834 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-17 22:18:16 +00:00
Johnny Chen
e68d8ec252
It used to be that t_addrmode_s4 was used for both:
...
o A8.6.195 STR (register) -- Encoding T1
o A8.6.193 STR (immediate, Thumb) -- Encoding T1
It has been changed so that now they use different addressing modes
and thus different MC representation (Operand Infos). Modify the
disassembler to reflect the change, and add relevant tests.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127833 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-17 22:04:05 +00:00
Devang Patel
5ee20680c7
Refactor into a separate utility function.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127832 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-17 21:58:19 +00:00
Benjamin Kramer
1c10b8de46
BuildUDIV: If the divisor is even we can simplify the fixup of the multiplied value by introducing an early shift.
...
This allows us to compile "unsigned foo(unsigned x) { return x/28; }" into
shrl $2, %edi
imulq $613566757, %rdi, %rax
shrq $32, %rax
ret
instead of
movl %edi, %eax
imulq $613566757, %rax, %rcx
shrq $32, %rcx
subl %ecx, %eax
shrl %eax
addl %ecx, %eax
shrl $4, %eax
on x86_64
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127829 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-17 20:39:14 +00:00
Benjamin Kramer
d9103df51b
Add an argument to APInt's magic udiv calculation to specify the number of bits that are known zero in the divided number.
...
This will come in handy soon.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127828 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-17 20:39:06 +00:00
Jakob Stoklund Olesen
6a3dbd3b25
Dead code elimination may separate the live interval into multiple connected components.
...
I have convinced myself that it can only happen when a phi value dies. When it
happens, allocate new virtual registers for the components.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127827 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-17 20:37:07 +00:00
Stuart Hastings
c74513d1b6
Reapply: Add type output to llvm-dis annotations. Patch by Yuri!
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127824 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-17 19:50:04 +00:00
Richard Osborne
11bd0784d9
Add XCore intrinsic for setpsc.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127821 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-17 18:42:05 +00:00
Stuart Hastings
412bf0594e
Revert 127813 while fixing broken test.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127814 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-17 16:54:27 +00:00
Stuart Hastings
98cc1ef3e9
Add type output to llvm-dis. Patch by Yuri!
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127813 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-17 16:30:14 +00:00
Daniel Dunbar
8d06ffca9b
MC/Mach-O: Fix regression introduced in r126127, this assignment shouldn't have
...
been removed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127812 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-17 16:25:24 +00:00
Cameron Zwarich
7bbf0ee97c
Move more logic into getTypeForExtArgOrReturn.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127809 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-17 14:53:37 +00:00
Cameron Zwarich
9e69ff914d
Change the signext language in LangRef to closer match zeroext.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127808 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-17 14:21:58 +00:00
Cameron Zwarich
4457968011
Rename getTypeForExtendedInteger() to getTypeForExtArgOrReturn().
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127807 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-17 14:21:56 +00:00
Nick Lewycky
1ace169c3d
Add comments for the demanglings. Correct mangled form of operator delete!
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127801 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-17 05:20:12 +00:00
NAKAMURA Takumi
1aa7f7a997
test/CodeGen/X86/h-registers-1.ll: Add explicit -mtriple=x86_64-linux. It does not need to be checked on x86_64-win32 (aka Win64).
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127800 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-17 04:24:40 +00:00
Nick Lewycky
e27fa74d5f
Add "swi" which is an obsolete mnemonic for "svc".
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127788 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-17 01:46:14 +00:00
Eli Friedman
3d831381a9
A couple new README entries.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127786 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-17 01:22:09 +00:00
Rafael Espindola
f21b1058a1
Add support in the LTO library for loading an object from the middle
...
of an file.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127781 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-17 00:36:11 +00:00
Joerg Sonnenberger
d02c8b6cc1
Fix handling of @IDNTPOFF relocations, they need to get STT_TLS.
...
While here, add VK_ARM_TPOFF and VK_ARM_GOTTPOFF, too.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127780 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-17 00:35:10 +00:00
Jakob Stoklund Olesen
2254227791
Rewrite instructions as part of ConnectedVNInfoEqClasses::Distribute.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127779 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-17 00:23:45 +00:00
NAKAMURA Takumi
ede4e28ca3
test/CodeGen/X86/constant-pool-remat-0.ll: FileCheck-ize and add explicit -mtriple=x86_64-linux.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127775 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-16 23:01:31 +00:00
Jakob Stoklund Olesen
1d5b845081
Add a LiveRangeEdit delegate callback before shrinking a live range.
...
The register allocator needs to adjust its live interval unions when that happens.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127774 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-16 22:56:16 +00:00
Jakob Stoklund Olesen
cc5c4296fd
Erase virtual registers that are unused after DCE.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127773 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-16 22:56:13 +00:00
Jakob Stoklund Olesen
2926733240
Tag cached interference with a user-provided tag instead of the virtual register number.
...
The live range of a virtual register may change which invalidates the cached
interference information.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127772 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-16 22:56:11 +00:00
Jakob Stoklund Olesen
c46570dc05
Clarify debugging output.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127771 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-16 22:56:08 +00:00
Cameron Zwarich
ebe8173941
The x86-64 ABI says that a bool is only guaranteed to be sign-extended to a byte
...
rather than an int. Thankfully, this only causes LLVM to miss optimizations, not
generate incorrect code.
This just fixes the zext at the return. We still insert an i32 ZextAssert when
reading a function's arguments, but it is followed by a truncate and another i8
ZextAssert so it is not optimized.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127766 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-16 22:20:18 +00:00
Cameron Zwarich
7be4b7ed75
Rename a test to be more inclusive.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127765 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-16 22:20:12 +00:00
Cameron Zwarich
8df6bf5f5c
Don't recompute something that we already have in a local variable.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127764 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-16 22:20:07 +00:00
Daniel Dunbar
83320a023c
Revert r127757, "Patch to a fix dwarf relocation problem on ARM. One-line fix
...
plus the test where it used to break.", which broke Clang self-host of a
Debug+Asserts compiler, on OS X.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127763 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-16 22:16:39 +00:00
Richard Osborne
e17139b3e9
Add XCore intrinsics for setclk, setrdy.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127761 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-16 21:56:00 +00:00