Jakob Stoklund Olesen [Sat, 2 Jul 2011 07:17:37 +0000 (07:17 +0000)]
Better diagnostics when inline asm fails to allocate.
asm.c:2:7: error: ran out of registers during register allocation
asm(""::"r"(0), "r"(1), "r"(2), "r"(3), "r"(4), "r"(5), "r"(6), "r"(7), "r"(8), "r"(9));
^
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134310
91177308-0d34-0410-b5e6-
96231b3b80d8
Rafael Espindola [Sat, 2 Jul 2011 05:34:02 +0000 (05:34 +0000)]
Check the VN of the src register at the two copies, not just the
register number.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134309
91177308-0d34-0410-b5e6-
96231b3b80d8
Eric Christopher [Sat, 2 Jul 2011 04:06:41 +0000 (04:06 +0000)]
Be less specific about register allocation ordering.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134308
91177308-0d34-0410-b5e6-
96231b3b80d8
Jakob Stoklund Olesen [Sat, 2 Jul 2011 03:53:34 +0000 (03:53 +0000)]
Include a source location when complaining about bad inline assembly.
Add a MI->emitError() method that the backend can use to report errors
related to inline assembly. Call it from X86FloatingPoint.cpp when the
constraints are wrong.
This enables proper clang diagnostics from the backend:
$ clang -c pr30848.c
pr30848.c:5:12: error: Inline asm output regs must be last on the x87 stack
__asm__ ("" : "=u" (d)); /* { dg-error "output regs" } */
^
1 error generated.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134307
91177308-0d34-0410-b5e6-
96231b3b80d8
Andrew Trick [Sat, 2 Jul 2011 02:34:25 +0000 (02:34 +0000)]
indvars -disable-iv-rewrite: bug fix involving weird geps and related cleanup.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134306
91177308-0d34-0410-b5e6-
96231b3b80d8
Jakob Stoklund Olesen [Sat, 2 Jul 2011 01:37:09 +0000 (01:37 +0000)]
Use a new strategy for preventing eviction loops in RAGreedy.
Every live range is assigned a cascade number the first time it is
involved in an eviction. As the evictor, it gets a new cascade number.
Every evictee is assigned the same cascade number as the evictor.
Eviction is prohibited if the evictor has a lower assigned cascade
number than the evictee.
This means that assigned cascade numbers are monotonically increasing
with every eviction, yet they are bounded by NextCascade which can only
be incremented by new live ranges. Thus, infinite loops cannot happen,
but eviction cascades can still be triggered by new live ranges as we
want.
Thanks to Andy for explaining this to me.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134303
91177308-0d34-0410-b5e6-
96231b3b80d8
Evan Cheng [Sat, 2 Jul 2011 00:43:44 +0000 (00:43 +0000)]
Add getFeatureBits to extract feature bits for a given CPU.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134298
91177308-0d34-0410-b5e6-
96231b3b80d8
Eric Christopher [Sat, 2 Jul 2011 00:19:55 +0000 (00:19 +0000)]
Remove the confusing getDarwinNumber() api and friends.
Part of rdar://
9714064
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134291
91177308-0d34-0410-b5e6-
96231b3b80d8
Cameron Zwarich [Fri, 1 Jul 2011 23:45:21 +0000 (23:45 +0000)]
Take a stab at fixing the llvm-x86_64-linux-checks failure.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134287
91177308-0d34-0410-b5e6-
96231b3b80d8
Eric Christopher [Fri, 1 Jul 2011 23:04:38 +0000 (23:04 +0000)]
TargetConstant immediates won't be placed into registers so tighten
up the valid constant check earlier.
rdar://
9692967
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134286
91177308-0d34-0410-b5e6-
96231b3b80d8
Douglas Gregor [Fri, 1 Jul 2011 22:41:06 +0000 (22:41 +0000)]
Add initial *-*-rtems* target, from Joel Sherrill
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134282
91177308-0d34-0410-b5e6-
96231b3b80d8
Evan Cheng [Fri, 1 Jul 2011 22:36:09 +0000 (22:36 +0000)]
Rename XXXGenSubtarget.inc to XXXGenSubtargetInfo.inc for consistency.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134281
91177308-0d34-0410-b5e6-
96231b3b80d8
Evan Cheng [Fri, 1 Jul 2011 22:25:04 +0000 (22:25 +0000)]
Add MCSubtargetInfo target registry stuff.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134279
91177308-0d34-0410-b5e6-
96231b3b80d8
Dan Gohman [Fri, 1 Jul 2011 22:05:19 +0000 (22:05 +0000)]
Teach IVUsers to stop at non-affine expressions unless they are both
outside the loop and reducible.
This more completely hides them from LSR, which isn't usually able to
do anything meaningful with non-affine expressions anyway, and this
consequently hides them from SCEVExpander, which is acutely unprepared
for non-affine expressions.
Replace test/CodeGen/X86/lsr-nonaffine.ll with a new test that tests
the new behavior.
This works around the bug in PR10117 / rdar://problem/
9633149, and is
generally an improvement besides.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134268
91177308-0d34-0410-b5e6-
96231b3b80d8
Owen Anderson [Fri, 1 Jul 2011 21:52:38 +0000 (21:52 +0000)]
Generalize @llvm.ctlz, @llvm.cttz, and @llvm.ctpop to work on vectors of integers, and fix the one optimization pass that I'm aware of that needs updating for this. At least one current target, ARM NEON, can implement these operations on vectors directly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134265
91177308-0d34-0410-b5e6-
96231b3b80d8
Eli Friedman [Fri, 1 Jul 2011 21:33:28 +0000 (21:33 +0000)]
Calling-convention specifications for illegal types are no-ops. Simplify based on this.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134264
91177308-0d34-0410-b5e6-
96231b3b80d8
Jim Grosbach [Fri, 1 Jul 2011 21:12:19 +0000 (21:12 +0000)]
ARMv7M vs. ARMv7E-M support.
The DSP instructions in the Thumb2 instruction set are an optional extension
in the Cortex-M* archtitecture. When present, the implementation is considered
an "ARMv7E-M implementation," and when not, an "ARMv7-M implementation."
Add a subtarget feature hook for the v7e-m instructions and hook it up. The
cortex-m3 cpu is an example of a v7m implementation, while the cortex-m4 is
a v7e-m implementation.
rdar://
9572992
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134261
91177308-0d34-0410-b5e6-
96231b3b80d8
Evan Cheng [Fri, 1 Jul 2011 21:01:15 +0000 (21:01 +0000)]
Rename TargetSubtarget to TargetSubtargetInfo for consistency.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134259
91177308-0d34-0410-b5e6-
96231b3b80d8
Evan Cheng [Fri, 1 Jul 2011 20:45:01 +0000 (20:45 +0000)]
- Added MCSubtargetInfo to capture subtarget features and scheduling
itineraries.
- Refactor TargetSubtarget to be based on MCSubtargetInfo.
- Change tablegen generated subtarget info to initialize MCSubtargetInfo
and hide more details from targets.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134257
91177308-0d34-0410-b5e6-
96231b3b80d8
Jim Grosbach [Fri, 1 Jul 2011 19:07:09 +0000 (19:07 +0000)]
Fix off-by-one error.
(low two bits always zero, so off by one bit of encoded value).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134247
91177308-0d34-0410-b5e6-
96231b3b80d8
Evan Cheng [Fri, 1 Jul 2011 17:57:27 +0000 (17:57 +0000)]
Hide the call to InitMCInstrInfo into tblgen generated ctor.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134244
91177308-0d34-0410-b5e6-
96231b3b80d8
Jim Grosbach [Fri, 1 Jul 2011 17:14:11 +0000 (17:14 +0000)]
Pseudo-ize t2MOVCC[ri].
t2MOVCC[ri] are just t2MOV[ri] instructions, so properly pseudo-ize them.
The Thumb1 versions, tMOVCC[ri] were only present for use by the size-
reduction pass, so they're no longer necessary at all and can be deleted.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134242
91177308-0d34-0410-b5e6-
96231b3b80d8
Evan Cheng [Fri, 1 Jul 2011 16:59:30 +0000 (16:59 +0000)]
Eliminate one extra conversion.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134240
91177308-0d34-0410-b5e6-
96231b3b80d8
Duncan Sands [Fri, 1 Jul 2011 12:01:00 +0000 (12:01 +0000)]
Disable commit 134216 ("Add 134199 back, but disable the optimization when the second
copy is a kill") to see if it fixes the i386 dragonegg buildbot, which is timing out
because gcc built with dragonegg is going into an infinite loop.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134237
91177308-0d34-0410-b5e6-
96231b3b80d8
Francois Pichet [Fri, 1 Jul 2011 09:23:41 +0000 (09:23 +0000)]
Another misuse of StringRef. MSVC is very sensitive to that kind of error.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134236
91177308-0d34-0410-b5e6-
96231b3b80d8
Nick Lewycky [Fri, 1 Jul 2011 06:27:03 +0000 (06:27 +0000)]
Fix likely typo, reduce number of instruction name collisions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134235
91177308-0d34-0410-b5e6-
96231b3b80d8
Rafael Espindola [Fri, 1 Jul 2011 04:40:50 +0000 (04:40 +0000)]
Fix use after free.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134234
91177308-0d34-0410-b5e6-
96231b3b80d8
Rafael Espindola [Fri, 1 Jul 2011 04:15:02 +0000 (04:15 +0000)]
Avoid DenseMap lookup.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134231
91177308-0d34-0410-b5e6-
96231b3b80d8
Rafael Espindola [Fri, 1 Jul 2011 03:31:29 +0000 (03:31 +0000)]
Fix off by one error. I misunderstood the comment about killedAt.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134229
91177308-0d34-0410-b5e6-
96231b3b80d8
Rafael Espindola [Fri, 1 Jul 2011 02:35:06 +0000 (02:35 +0000)]
Check the liveinterval, not the kill flag.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134228
91177308-0d34-0410-b5e6-
96231b3b80d8
Jakob Stoklund Olesen [Fri, 1 Jul 2011 01:24:25 +0000 (01:24 +0000)]
Don't inflate register classes used by inline asm.
The constraints are represented by the register class of the original
virtual register created for the inline asm. If the register class were
included in the operand descriptor, we might be able to do this.
For now, just give up on regclass inflation when inline asm is involved.
No test case, this bug hasn't happened yet.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134226
91177308-0d34-0410-b5e6-
96231b3b80d8
Akira Hatanaka [Fri, 1 Jul 2011 01:04:43 +0000 (01:04 +0000)]
Improve Mips back-end's handling of DBG_VALUE.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134224
91177308-0d34-0410-b5e6-
96231b3b80d8
Dan Gohman [Fri, 1 Jul 2011 01:03:43 +0000 (01:03 +0000)]
Improve constant folding of undef for cmp and select operators.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134223
91177308-0d34-0410-b5e6-
96231b3b80d8
Eric Christopher [Fri, 1 Jul 2011 01:00:07 +0000 (01:00 +0000)]
Add support for the 'j' immediate constraint. This is conditionalized on
supporting the instruction that the constraint is for 'movw'.
Part of rdar://
9119939
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134222
91177308-0d34-0410-b5e6-
96231b3b80d8
Dan Gohman [Fri, 1 Jul 2011 00:42:17 +0000 (00:42 +0000)]
Improve constant folding of undef for binary operators.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134221
91177308-0d34-0410-b5e6-
96231b3b80d8
Eric Christopher [Fri, 1 Jul 2011 00:30:46 +0000 (00:30 +0000)]
Add support for the ARM 't' register constraint. And another testcase
for the 'x' register constraint.
Part of rdar://
9119939
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134220
91177308-0d34-0410-b5e6-
96231b3b80d8
Evan Cheng [Fri, 1 Jul 2011 00:23:10 +0000 (00:23 +0000)]
Switch SubtargetFeatures from std::string to StringRef.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134219
91177308-0d34-0410-b5e6-
96231b3b80d8
Eric Christopher [Fri, 1 Jul 2011 00:19:27 +0000 (00:19 +0000)]
We'll return a null RC by default if we can't match.
Part of rdar://
9119939
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134217
91177308-0d34-0410-b5e6-
96231b3b80d8
Rafael Espindola [Fri, 1 Jul 2011 00:16:54 +0000 (00:16 +0000)]
Add 134199 back, but disable the optimization when the second copy is a kill.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134216
91177308-0d34-0410-b5e6-
96231b3b80d8
Eric Christopher [Fri, 1 Jul 2011 00:14:47 +0000 (00:14 +0000)]
Add support for the 'x' constraint.
Part of rdar://
9307836 and rdar://
9119939
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134215
91177308-0d34-0410-b5e6-
96231b3b80d8
Bill Wendling [Thu, 30 Jun 2011 23:59:38 +0000 (23:59 +0000)]
Remove tabs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134212
91177308-0d34-0410-b5e6-
96231b3b80d8
Eric Christopher [Thu, 30 Jun 2011 23:59:16 +0000 (23:59 +0000)]
Capitalize the unsigned part of the initializer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134211
91177308-0d34-0410-b5e6-
96231b3b80d8
Eric Christopher [Thu, 30 Jun 2011 23:50:52 +0000 (23:50 +0000)]
Rename Pair to RCPair lacking any better naming ideas.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134210
91177308-0d34-0410-b5e6-
96231b3b80d8
Bill Wendling [Thu, 30 Jun 2011 23:47:40 +0000 (23:47 +0000)]
Improve comment: Show the register the DWARF label is added to.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134209
91177308-0d34-0410-b5e6-
96231b3b80d8
Bill Wendling [Thu, 30 Jun 2011 23:47:14 +0000 (23:47 +0000)]
Use the correct registers on X86_64.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134208
91177308-0d34-0410-b5e6-
96231b3b80d8
Jakob Stoklund Olesen [Thu, 30 Jun 2011 23:42:18 +0000 (23:42 +0000)]
Fix a problem with fast-isel return values introduced in r134018.
We would put the return value from long double functions in the wrong
register.
This fixes gcc.c-torture/execute/conversion.c
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134205
91177308-0d34-0410-b5e6-
96231b3b80d8
Jim Grosbach [Thu, 30 Jun 2011 23:38:17 +0000 (23:38 +0000)]
Refact ARM Thumb1 tMOVr instruction family.
Merge the tMOVr, tMOVgpr2tgpr, tMOVtgpr2gpr, and tMOVgpr2gpr instructions
into tMOVr. There's no need to keep them separate. Giving the tMOVr
instruction the proper GPR register class for its operands is sufficient
to give the register allocator enough information to do the right thing
directly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134204
91177308-0d34-0410-b5e6-
96231b3b80d8
Eric Christopher [Thu, 30 Jun 2011 23:23:01 +0000 (23:23 +0000)]
Add support for the 'h' constraint.
Part of rdar://
9119939
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134203
91177308-0d34-0410-b5e6-
96231b3b80d8
Bill Wendling [Thu, 30 Jun 2011 23:20:32 +0000 (23:20 +0000)]
Add target a target hook to get the register number used by the compact unwind
encoding for the registers it knows about. Return -1 if it can't handle that
register.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134202
91177308-0d34-0410-b5e6-
96231b3b80d8
Rafael Espindola [Thu, 30 Jun 2011 22:58:17 +0000 (22:58 +0000)]
Revert my previous patch while I debug llvm-gcc bootstrap.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134201
91177308-0d34-0410-b5e6-
96231b3b80d8
Bill Wendling [Thu, 30 Jun 2011 22:35:49 +0000 (22:35 +0000)]
Add one more comment to the FDE verbose asm output.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134200
91177308-0d34-0410-b5e6-
96231b3b80d8
Rafael Espindola [Thu, 30 Jun 2011 22:24:13 +0000 (22:24 +0000)]
Don't give up on coalescing A and B when we find
A = X
B = X
Instead, proceed as if we had found
A = X
B = A
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134199
91177308-0d34-0410-b5e6-
96231b3b80d8
Eric Christopher [Thu, 30 Jun 2011 22:17:01 +0000 (22:17 +0000)]
Add a convenience typedef for std::pair<unsigned, const TargetRegisterClass*>.
No functional change.
Part of rdar://
9119939
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134198
91177308-0d34-0410-b5e6-
96231b3b80d8
Jim Grosbach [Thu, 30 Jun 2011 22:10:46 +0000 (22:10 +0000)]
Thumb1 register to register MOV instruction is predicable.
Fix a FIXME and allow predication (in Thumb2) for the T1 register to
register MOV instructions. This allows some better codegen with
if-conversion (as seen in the test updates), plus it lays the groundwork
for pseudo-izing the tMOVCC instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134197
91177308-0d34-0410-b5e6-
96231b3b80d8
Bill Wendling [Thu, 30 Jun 2011 22:02:20 +0000 (22:02 +0000)]
Add comments to the FDE.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134196
91177308-0d34-0410-b5e6-
96231b3b80d8
Bill Wendling [Thu, 30 Jun 2011 21:45:12 +0000 (21:45 +0000)]
Add more comments to the ASM output for the CIE's "moves".
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134194
91177308-0d34-0410-b5e6-
96231b3b80d8
Jakob Stoklund Olesen [Thu, 30 Jun 2011 21:30:30 +0000 (21:30 +0000)]
Tweak error messages to match GCC. Should fix gcc.target/i386/pr30848.c
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134193
91177308-0d34-0410-b5e6-
96231b3b80d8
Bill Wendling [Thu, 30 Jun 2011 21:25:51 +0000 (21:25 +0000)]
Add comments to the ASM output to help understand the compact unwind and CIE tables.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134191
91177308-0d34-0410-b5e6-
96231b3b80d8
Rafael Espindola [Thu, 30 Jun 2011 21:15:52 +0000 (21:15 +0000)]
Create a isFullCopy predicate.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134189
91177308-0d34-0410-b5e6-
96231b3b80d8
Rafael Espindola [Thu, 30 Jun 2011 20:14:24 +0000 (20:14 +0000)]
Add r134057 back, but splice the predecessor after the successors phi
nodes.
Original message:
Let simplify cfg simplify bb with only debug and lifetime intrinsics.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134182
91177308-0d34-0410-b5e6-
96231b3b80d8
Jim Grosbach [Thu, 30 Jun 2011 19:38:01 +0000 (19:38 +0000)]
Pseudo-ize the Thumb tTPsoft instruction.
It's just a call to a special helper function. Get rid of the T2 variant
entirely, as it's identical to the Thumb1 version.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134178
91177308-0d34-0410-b5e6-
96231b3b80d8
Andrew Trick [Thu, 30 Jun 2011 19:02:17 +0000 (19:02 +0000)]
indvars -disable-iv-rewrite: handle cloning binary operators that cannot overflow.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134177
91177308-0d34-0410-b5e6-
96231b3b80d8
Jim Grosbach [Thu, 30 Jun 2011 18:25:42 +0000 (18:25 +0000)]
Pseudo-ize the t2LDMIA_RET instruction.
It's just a t2LDMIA_UPD instruction with extra codegen properties, so it
doesn't need the encoding information. As a side-benefit, we now correctly
recognize for instruction printing as a 'pop' instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134173
91177308-0d34-0410-b5e6-
96231b3b80d8
Jim Grosbach [Thu, 30 Jun 2011 17:34:04 +0000 (17:34 +0000)]
Pseudo-ize the Thumb tPOP_RET instruction.
It's just a tPOP instruction with additional code-gen properties, so it
doesn't need encoding information.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134172
91177308-0d34-0410-b5e6-
96231b3b80d8
Rafael Espindola [Thu, 30 Jun 2011 13:17:24 +0000 (13:17 +0000)]
Remove dead code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134148
91177308-0d34-0410-b5e6-
96231b3b80d8
Duncan Sands [Thu, 30 Jun 2011 06:37:07 +0000 (06:37 +0000)]
The enum was moved to ISDOpcodes.h.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134134
91177308-0d34-0410-b5e6-
96231b3b80d8
Jim Grosbach [Thu, 30 Jun 2011 02:23:05 +0000 (02:23 +0000)]
Kill dead code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134131
91177308-0d34-0410-b5e6-
96231b3b80d8
Jim Grosbach [Thu, 30 Jun 2011 02:22:49 +0000 (02:22 +0000)]
Size reducing SP adjusting t2ADDri needs to check predication.
tADDrSPi is not predicable, so we can't size-reduce a t2ADDri to it if the
predicate is anything other than "always."
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134130
91177308-0d34-0410-b5e6-
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Evan Cheng [Thu, 30 Jun 2011 02:12:44 +0000 (02:12 +0000)]
Fix ARMSubtarget feature parsing.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134129
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Evan Cheng [Thu, 30 Jun 2011 01:53:36 +0000 (01:53 +0000)]
Fix the ridiculous SubtargetFeatures API where it implicitly expects CPU name to
be the first encoded as the first feature. It then uses the CPU name to look up
features / scheduling itineray even though clients know full well the CPU name
being used to query these properties.
The fix is to just have the clients explictly pass the CPU name!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134127
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Joerg Sonnenberger [Thu, 30 Jun 2011 01:38:03 +0000 (01:38 +0000)]
Recognize the xstorerng alias for VIA PadLock's xstore instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134126
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Jakob Stoklund Olesen [Thu, 30 Jun 2011 01:30:39 +0000 (01:30 +0000)]
Reapply r134047 now that the world is ready for it.
This patch will sometimes choose live range split points next to
interference instead of always splitting next to a register point. That
means spill code can now appear almost anywhere, and it was necessary
to fix code that didn't expect that.
The difficult places were:
- Between a CALL returning a value on the x87 stack and the
corresponding FpPOP_RETVAL (was FpGET_ST0). Probably also near x87
inline assembly, but that didn't actually show up in testing.
- Between a CALL popping arguments off the stack and the corresponding
ADJCALLSTACKUP.
Both are fixed now. The only place spill code can't appear is after
terminators, see SplitAnalysis::getLastSplitPoint.
Original commit message:
Rewrite RAGreedy::splitAroundRegion, now with cool ASCII art.
This function has to deal with a lot of special cases, and the old
version got it wrong sometimes. In particular, it would sometimes leave
multiple uses in the stack interval in a single block. That causes bad
code with multiple reloads in the same basic block.
The new version handles block entry and exit in a single pass. It first
eliminates all the easy cases, and then goes on to create a local
interval for the blocks with difficult interference. Previously, we
would only create the local interval for completely isolated blocks.
It can happen that the stack interval becomes completely empty because
we could allocate a register in all edge bundles, and the new local
intervals deal with the interference. The empty stack interval is
harmless, but we need to remove a SplitKit assertion that checks for
empty intervals.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134125
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Andrew Trick [Thu, 30 Jun 2011 01:27:23 +0000 (01:27 +0000)]
indvars -disable-iv-rewrite: handle an edge case involving identity phis.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134124
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Eric Christopher [Thu, 30 Jun 2011 01:20:03 +0000 (01:20 +0000)]
Remove getRegClassForInlineAsmConstraint and all dependencies.
Fixes rdar://
9643582
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134123
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Eric Christopher [Thu, 30 Jun 2011 01:05:46 +0000 (01:05 +0000)]
Make sure we use the correct register class here since we'll need to
care about spill values.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134122
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Eric Christopher [Thu, 30 Jun 2011 00:48:30 +0000 (00:48 +0000)]
Fix a small thinko for constant i64 lock/orq optimization where we
we didn't have an opcode for 64-bit constant or expressions.
Fixes rdar://
9692967
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134121
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Bill Wendling [Thu, 30 Jun 2011 00:30:52 +0000 (00:30 +0000)]
* Use the proper size to output the range size.
* Rough in the compact encoding part.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134119
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Bill Wendling [Wed, 29 Jun 2011 23:53:16 +0000 (23:53 +0000)]
Stupid error: If the LSDA and Personality functions aren't there, emit 0 instead
of the encoding.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134117
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Devang Patel [Wed, 29 Jun 2011 23:50:13 +0000 (23:50 +0000)]
Revert r133953 for now.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134116
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Bill Wendling [Wed, 29 Jun 2011 23:49:12 +0000 (23:49 +0000)]
We don't want to use relocations inside the compact unwind section. Just use the
symbols instead.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134115
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Jim Grosbach [Wed, 29 Jun 2011 23:25:04 +0000 (23:25 +0000)]
Remove redundant Thumb2 ADD/SUB SP instruction definitions.
Unlike Thumb1, Thumb2 does not have dedicated encodings for adjusting the
stack pointer. It can just use the normal add-register-immediate encoding
since it can use all registers as a source, not just R0-R7. The extra
instruction definitions are just duplicates of the normal instructions with
the (not well enforced) constraint that the source register was SP.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134114
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Jakob Stoklund Olesen [Wed, 29 Jun 2011 23:11:39 +0000 (23:11 +0000)]
Always adjust the stack pointer immediately after the call.
Some x86-32 calls pop values off the stack, and we need to readjust the
stack pointer after the call. This happens when ADJCALLSTACKUP is
eliminated.
It could happen that spill code was inserted between the CALL and
ADJCALLSTACKUP instructions, and we would compute wrong stack pointer
offsets for those frame index references.
Fix this by inserting the stack pointer adjustment immediately after the
call instead of where the ADJCALLSTACKUP instruction was erased.
I don't have a test case since we don't currently insert code in that
position. We will soon, though. I am testing a regalloc patch that
didn't work on Linux because of this.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134113
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Andrew Trick [Wed, 29 Jun 2011 23:03:57 +0000 (23:03 +0000)]
indvars -disable-iv-rewrite: insert new trunc instructions carefully.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134112
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Andrew Trick [Wed, 29 Jun 2011 23:01:52 +0000 (23:01 +0000)]
Added IRBuilder::SetInsertPoint(Use) to find a valid insertion point
that dominates the given Use.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134111
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Andrew Trick [Wed, 29 Jun 2011 22:52:51 +0000 (22:52 +0000)]
whitespace
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134110
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Cameron Zwarich [Wed, 29 Jun 2011 22:24:25 +0000 (22:24 +0000)]
In the ARM global merging pass, allow extraneous alignment specifiers. This pass
already makes the assumption, which is correct on ARM, that a type's alignment is
less than its alloc size. This improves codegen with Clang (which inserts a lot of
extraneous alignment specifiers) and fixes <rdar://problem/
9695089>.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134106
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Jim Grosbach [Wed, 29 Jun 2011 22:01:15 +0000 (22:01 +0000)]
ARM RSCS* don't need explicit TableGen decoder checks.
They've been pseudos for a while now, so the decoder will never see
them in the first place.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134101
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Evan Cheng [Wed, 29 Jun 2011 21:58:37 +0000 (21:58 +0000)]
Indentation
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134100
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Eric Christopher [Wed, 29 Jun 2011 21:10:36 +0000 (21:10 +0000)]
Remove getRegClassForInlineAsmConstraint from the ARM port.
Part of rdar://
9643582
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134095
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Eric Christopher [Wed, 29 Jun 2011 21:05:54 +0000 (21:05 +0000)]
Remove todo.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134094
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Rafael Espindola [Wed, 29 Jun 2011 20:55:48 +0000 (20:55 +0000)]
make compose and isMoveInstr static functions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134093
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Jim Grosbach [Wed, 29 Jun 2011 20:26:39 +0000 (20:26 +0000)]
Refactor away tSpill and tRestore pseudos in ARM backend.
The tSpill and tRestore instructions are just copies of the tSTRspi and
tLDRspi instructions, respectively. Just use those directly instead.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134092
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Eric Christopher [Wed, 29 Jun 2011 19:41:27 +0000 (19:41 +0000)]
Add a TODO for the Alpha port inline asm constraints.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134089
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Eric Christopher [Wed, 29 Jun 2011 19:40:01 +0000 (19:40 +0000)]
Move Alpha from getRegClassForInlineAsmConstraint to
getRegForInlineAsmConstraint.
Part of rdar://
9643582
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134088
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Eric Christopher [Wed, 29 Jun 2011 19:33:04 +0000 (19:33 +0000)]
Update comment for getRegForInlineAsmConstraint for Mips.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134087
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Eric Christopher [Wed, 29 Jun 2011 19:30:29 +0000 (19:30 +0000)]
Move the Blackfin port away from getRegClassForInlineAsmConstraint by
creating a few specific register classes.
Part of rdar://
9643582
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134086
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Eric Christopher [Wed, 29 Jun 2011 19:12:24 +0000 (19:12 +0000)]
Remove getRegClassForInlineAsmConstraint from MBlaze. Add a TODO comment
for the port.
Part of rdar://
9643582
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134085
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Eric Christopher [Wed, 29 Jun 2011 19:04:31 +0000 (19:04 +0000)]
Remove getRegClassForInlineAsmConstraint for Mips.
Part of rdar://
9643582
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134084
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Eric Christopher [Wed, 29 Jun 2011 18:53:10 +0000 (18:53 +0000)]
Remove getRegClassForInlineAsmConstraint from sparc.
Part of rdar://
9643582
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134083
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Eric Christopher [Wed, 29 Jun 2011 17:53:29 +0000 (17:53 +0000)]
Move XCore from getRegClassForInlineAsmConstraint to
getRegForInlineAsmConstraint.
Part of rdar://
9643582
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134080
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