Commit Graph

72353 Commits

Author SHA1 Message Date
Nick Lewycky
fcf74ed5a2 When the path wasn't emitted by the frontend, discard any path on the source
filename.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130897 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-05 00:03:30 +00:00
Jakob Stoklund Olesen
7a2718a3c1 Disable physical register coalescing by default.
Joining physregs is inherently dangerous because it uses a heuristic to avoid
creating invalid code. Linear scan had an emergency spilling mechanism to deal
with those rare cases. The new greedy allocator does not.

The greedy register allocator is much better at taking hints, so this has almost
no impact on code size and quality. The few cases where it matters show up as
unit tests that now have -join-physregs enabled explicitly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130896 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 23:59:00 +00:00
Devang Patel
0f18d97fd1 Set debug loc for new instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130895 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 23:58:50 +00:00
Devang Patel
a922ba7edc Set debug location for new PHI nodes created in exit block.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130894 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 23:58:22 +00:00
Jakob Stoklund Olesen
49b2803ec2 Prepare remaining tests for -join-physreg going away.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130893 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 23:54:59 +00:00
Jakob Stoklund Olesen
4f5de9bb40 Fix X86RegisterInfo::getMatchingSuperRegClass for sub_8bit_hi.
It is OK for B to be any GR8_ABCD_H superclass, the returned register class
doesn't have to map surjectively onto B.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130892 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 23:54:54 +00:00
Jakob Stoklund Olesen
61396aebee Fix a batch of x86 tests to be coalescer independent.
Most of these tests require a single mov instruction that can come either before
or after a 2-addr instruction. -join-physregs changes the behavior, but the
results are equivalent.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130891 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 23:54:51 +00:00
Bill Wendling
3f58a513e1 Document the automatic alias printing of InstAliases.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130889 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 23:40:14 +00:00
Ted Kremenek
2169ad8c60 Add explicit 'unregister' method to CrashRecoveryConextCleanupRegistrar.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130885 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 23:26:59 +00:00
Dan Gohman
becfb889aa Give this test an explicit register allocator, so that it can work even if
the default register allocator is changed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130883 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 23:14:02 +00:00
Bill Wendling
d29052bf26 SjLj EH could produce a machine basic block that legitimately has more than one
landing pad as its successor.

SjLj exception handling jumps to the correct landing pad via a switch statement
that's generated right before code-gen. Loosen the constraint in the machine
instruction verifier to allow for this. Note, this isn't the most rigorous check
since we cannot determine where that switch statement came from. But it's
marginally better than turning this check off when SjLj exceptions are used.
<rdar://problem/9187612>


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130881 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 22:54:05 +00:00
Devang Patel
95a7de6b91 Preserve line number information while threading jumps.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130880 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 22:48:19 +00:00
Nick Lewycky
5e436b3b0e Create the parent directories to place the .gcda files in if they don't exist.
That's kinda weird because the .gcno files are supposed to already be there,
but libgcov does this and somehow Google has managed to depend on it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130879 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 22:34:29 +00:00
Eli Friedman
baf717a08a Re-commit r130862 with a minor change to avoid an iterator running off the edge in some cases.
Original message:

Teach MachineCSE how to do simple cross-block CSE involving physregs.  This allows, for example, eliminating duplicate cmpl's on x86. Part of rdar://problem/8259436 .



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130877 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 22:10:36 +00:00
Devang Patel
b90584ae78 Preserve line number info.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130876 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 21:58:58 +00:00
Galina Kistanova
ff4f6eaf4e This test fails on ARM. The test shouldn't explicitly specify alignment (and alignment 4 is wrong) and requires hard-float.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130875 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 21:57:44 +00:00
Devang Patel
6a0ce750f7 If builder is initialized using an instruction as insertion point, then use the instruction's debug location as current debug location.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130874 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 21:57:22 +00:00
Devang Patel
af35841f2e preserve line number info.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130869 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 21:37:05 +00:00
Eli Friedman
24d4c9911e Back out r130862; it appears to be breaking bootstrap.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130867 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 20:48:42 +00:00
Eli Friedman
49cec1d818 Teach MachineCSE how to do simple cross-block CSE involving physregs. This allows, for example, eliminating duplicate cmpl's on x86. Part of rdar://problem/8259436 .
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130862 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 19:54:24 +00:00
Duncan Sands
2abb82b1d3 Remove an unused variable.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130860 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 19:13:01 +00:00
Jakob Stoklund Olesen
96169b189c Fix more register and coalescing dependencies.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130859 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 19:02:11 +00:00
Jakob Stoklund Olesen
28e104bcb0 Explicitly request physreg coalesing for a bunch of Thumb2 unit tests.
These tests all follow the same pattern:

	mov	r2, r0
	movs	r0, #0
	$CMP	r2, r1
	it	eq
	moveq	r0, #1
	bx	lr

The first 'mov' can be eliminated by rematerializing 'movs r0, #0' below the
test instruction:

	$CMP	r0, r1
	mov.w	r0, #0
	it	eq
	moveq	r0, #1
	bx	lr

So far, only physreg coalescing can do that. The register allocators won't yet
split live ranges just to eliminate copies. They can learn, but this particular
problem is not likely to show up in real code. It only appears because r0 is
used for both the function argument and return value.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130858 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 19:02:07 +00:00
Jakob Stoklund Olesen
21f7902a89 Implement SystemZRegisterInfo::getMatchingSuperRegClass to enable cross-class joins.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130857 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 19:02:04 +00:00
Jakob Stoklund Olesen
14c76fed2d FileCheckize and break dependence on coalescing order.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130856 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 19:02:01 +00:00
Jakob Stoklund Olesen
f695b3ad62 Explicitly request -join-physregs for some tests that depend on it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130855 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 19:01:59 +00:00
Devang Patel
64915dec28 Do not emit location expression size twice.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130854 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 19:00:57 +00:00
Rafael Espindola
6af0b762db Fix cmake build.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130850 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 18:46:56 +00:00
Akira Hatanaka
921c58b001 Remove LLVM IR metadata in test case committed in r130847.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130849 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 18:28:36 +00:00
Akira Hatanaka
6b7588e6c4 Prevent instructions using $gp from being placed between a jalr and the instruction that restores the clobbered $gp.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130847 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 17:54:27 +00:00
Rafael Espindola
597a7664e1 Producing a DW_FORM_addr for DW_AT_stmt_list is probably correct, but
it is both inefficient and unexpected by dwarfdump. Change to
a DW_FORM_data4.

While in here, change the predicate name to reflect that the position
is not really absolute (it is an offset), just that the linker needs a
relocation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130846 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 17:44:06 +00:00
Jakob Stoklund Olesen
9126601770 Rename -disable-physical-join to -join-physregs and invert it.
Physreg joining is still on by default, but I will turn it off shortly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130844 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 16:45:05 +00:00
Devang Patel
a938dd0dc9 Tighten up check for empty (i.e. no meaningful debug info) module. This fixes dwarf-die2.c test case from gcc test suite.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130842 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 16:34:02 +00:00
Duncan Sands
8140ad32ce Add variations on: max(x,y) >= min(x,z) folds to true. This isn't that common,
but according to my super-optimizer there are only two missed simplifications
of -instsimplify kind when compiling bzip2, and this is one of them.  It amuses
me to have bzip2 be perfectly optimized as far as instsimplify goes!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130840 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 16:05:05 +00:00
Nick Lewycky
269687fa35 Emit gcov data files to the directory specified in the metadata produced by the
frontend, if applicable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130835 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 04:03:04 +00:00
Nick Lewycky
d006ddc195 Fix crash when not setting GCOV_PREFIX.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130834 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 03:58:45 +00:00
Bill Wendling
fffb61d042 Remove dead intrinsics.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130831 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 02:40:54 +00:00
Andrew Trick
37da408758 indvars: Added DisableIVRewrite and WidenIVs.
This adds functionality to remove size/zero extension during indvars
without generating a canonical IV and rewriting all IV users. It's
disabled by default so should have no effect on codegen. Work in progress.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130829 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 02:10:13 +00:00
Nick Lewycky
9f1569a3f7 The system suppression file should catch these, but since they *once again* are
not, I'll just add them here and be done with it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130819 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 01:03:02 +00:00
Jakob Stoklund Olesen
20bc5acfb6 Don't depend on the physreg coalescing order.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130818 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 01:01:47 +00:00
Jakob Stoklund Olesen
c74399f8b4 Don't run this test through -regalloc=basic.
The basic allocator is really bad about hinting, so it doesn't eliminate all
copies when physreg joining is disabled.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130817 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 01:01:44 +00:00
Jakob Stoklund Olesen
22d28d2372 Fix register-dependent XCore tests
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130816 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 01:01:41 +00:00
Jakob Stoklund Olesen
9dfb367a42 Fix register-dependent test in MSP430.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130815 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 01:01:39 +00:00
Jakob Stoklund Olesen
b89383aeff Implement MSP430RegisterInfo::getMatchingSuperRegClass to enable cross-class
coalescing.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130814 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 01:01:36 +00:00
Eric Christopher
b65122c873 Remove some random comments that snuck in from somewhere.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130812 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 00:48:02 +00:00
Jakob Stoklund Olesen
2944b4fe05 Mark ultra-super-registers QQQQ as call-clobbered instead of the D sub-registers.
LiveVariables doesn't understand that clobbering D0 and D1 completely overwrites
Q0, so if Q0 is live-in to a function, its live range will extend beyond a
function call that only clobbers D0 and D1. This shows up in the
ARM/2009-11-01-NeonMoves test case.

LiveVariables should probably implement the much stricter rules for physreg
liveness that RAFast imposes - a physreg is killed by the first use of any
alias.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130801 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-03 22:31:24 +00:00
Jakob Stoklund Olesen
feaf34758a Fix a bunch of ARM tests to be register allocation independent.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130800 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-03 22:31:21 +00:00
Andrew Trick
4dfdf242c1 indvars: Added canExpandBackEdgeTakenCount.
Only create a canonical IV for backedge taken count if it will
actually be used by LinearFunctionTestReplace. And some related
cleanup, preparing to reduce dependence on canonical IVs.
No significant effect on x86 or arm in the test-suite.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130799 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-03 22:24:10 +00:00
Devang Patel
ee4a3abede Even if the subprogram is going to use AT_specification, emit DW_AT_MIPS_linkage_name. This helps gdb and fixes var-path-expr.exp regression reported by gdb testsuite.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130794 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-03 21:50:34 +00:00
Daniel Dunbar
b47426b4de MCDwarf: Don't save Twine to local variable, this is almost never safe to do
(and should thus never be done).
 - Should fix a crash on win32.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130793 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-03 21:33:37 +00:00