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5277 Commits

Author SHA1 Message Date
Dan Gohman
cd29e1fa60 When bit-twiddling CondCode values for integer comparisons produces 
SETOEQ, is it does with (SETEQ & SETULE), map it to SETEQ.

llvm-svn: 51112
 2008-05-14 18:17:09 +00:00
Tanya Lattner
ecd5a9390a Check if llvm-gcc is available before running tests. Patch by Matthijs Kooijman! 
llvm-svn: 51108
 2008-05-14 16:32:44 +00:00
Duncan Sands
d1ee8534e8 Make this test pass on x86-32 linux. 
llvm-svn: 51099
 2008-05-14 09:46:01 +00:00
Dale Johannesen
676a1d026b Fix for PR 2323, infinite loop in tail dup. 
llvm-svn: 51063
 2008-05-13 20:06:43 +00:00
Evan Cheng
9e15622879 Instead of a vector load, shuffle and then extract an element. Load the element from address with an offset. 
pshufd $1, (%rdi), %xmm0
        movd %xmm0, %eax
=>
        movl 4(%rdi), %eax

llvm-svn: 51026
 2008-05-13 08:35:03 +00:00
Owen Anderson
f67c06279b Add a testcase for non-local CSE of read-only calls. 
llvm-svn: 51025
 2008-05-13 08:17:44 +00:00
Evan Cheng
e4ee4c2870 On x86, it's safe to treat i32 load anyext as a normal i32 load. Ditto for i8 anyext load to i16. 
llvm-svn: 51019
 2008-05-13 00:54:02 +00:00
Evan Cheng
fcbdc8bd6e Xform bitconvert(build_pair(load a, load b)) to a single load if the load locations are at the right offset from each other. 
llvm-svn: 51008
 2008-05-12 23:04:07 +00:00
Dale Johannesen
b54491d31a New test for tail merging 
llvm-svn: 51007
 2008-05-12 22:59:44 +00:00
Mikhail Glushenkov
18508c5df4 Filter option names to escape symbols not allowed as C++ identifiers. 
Makes it possible to use options with names like "Wa,".
Also fixes the -Wall option handling as a side-effect.

llvm-svn: 50973
 2008-05-12 16:33:06 +00:00
Duncan Sands
45b1810980 Testcase for PR2264. 
llvm-svn: 50965
 2008-05-12 13:01:19 +00:00
Duncan Sands
15622620d3 Testcase for PR2303. 
llvm-svn: 50951
 2008-05-10 16:43:10 +00:00
Evan Cheng
c19c639ad7 When transforming a vector_shuffle to a load, the base address must not be an undef. 
llvm-svn: 50940
 2008-05-10 06:46:49 +00:00
Evan Cheng
fc4b8e1d96 Add nounwind. 
llvm-svn: 50931
 2008-05-10 02:22:25 +00:00
Evan Cheng
cf4d5567d5 If all sources of a PHI node are defined by an implicit_def, just emit an implicit_def instead of a copy. 
llvm-svn: 50927
 2008-05-10 00:17:50 +00:00
Evan Cheng
2adea48f7e Add a pattern to do move the low element of a v4f32 and zero extend the rest. 
llvm-svn: 50922
 2008-05-09 23:37:55 +00:00
Evan Cheng
3493e43afd Handle a few more cases of folding load i64 into xmm and zero top bits. 
Note, some of the code will be moved into target independent part of DAG combiner in a subsequent patch.

llvm-svn: 50918
 2008-05-09 21:53:03 +00:00
Evan Cheng
a0688bf1cb Simplify test. 
llvm-svn: 50911
 2008-05-09 19:56:32 +00:00
Chris Lattner
02ca137915 Implement PR2298. This transforms: 
~x < ~y --> y < x
   -x == -y --> x == y

llvm-svn: 50882
 2008-05-09 05:19:28 +00:00
Evan Cheng
f824b47188 Use movq to move low half of XMM register and zero-extend the rest. 
llvm-svn: 50874
 2008-05-08 22:35:02 +00:00
Chris Lattner
4c1ef3628b More than just loads can read from memory: readonly calls like strlen 
also need to be checked for memory modifying instructions before we
can sink them.  THis fixes the second half of PR2297.

llvm-svn: 50860
 2008-05-08 17:37:37 +00:00
Chris Lattner
cba8b4c7e8 Make instcombine's DSE respect loads as well as stores. It is not safe to 
delete the first store in:

store x -> p
load p
store y -> p

This is for PR2297.

llvm-svn: 50859
 2008-05-08 17:20:30 +00:00
Chris Lattner
9bf499a8b9 new testcase. 
llvm-svn: 50841
 2008-05-08 04:55:51 +00:00
Evan Cheng
f97e716511 Handle vector move / load which zero the destination register top bits (i.e. movd, movq, movss (addr), movsd (addr)) with X86 specific dag combine. 
llvm-svn: 50838
 2008-05-08 00:57:18 +00:00
Evan Cheng
7ff000c175 Add nounwind. 
llvm-svn: 50837
 2008-05-07 22:59:08 +00:00
Evan Cheng
c86c035346 Yet another nasty spiller bug. 
%ecx = op
store %cl<kill>, (addr)
(addr) = op %al

It's not safe to unfold the last operand and eliminate store even though %cl is marked kill. It's a sub-register use which means one of its super-register(s) may be used below.

llvm-svn: 50794
 2008-05-07 00:49:28 +00:00
Dan Gohman
6ea87fa437 Fix a bug in the ComputeMaskedBits logic for multiply. 
llvm-svn: 50793
 2008-05-07 00:35:55 +00:00
Bill Wendling
3cb8ee3c80 Removing. 
llvm-svn: 50786
 2008-05-06 23:56:22 +00:00
Anton Korobeynikov
a9ff11ea5f Use target triple in tests, not 'realign-stack=0' option. Per request. 
llvm-svn: 50778
 2008-05-06 23:09:29 +00:00
Owen Anderson
2dccdcf2f2 Testcase for r50770. 
llvm-svn: 50771
 2008-05-06 21:01:34 +00:00
Mikhail Glushenkov
5a403195b3 Move test files around a bit - fixes the reported number of test cases. 
llvm-svn: 50761
 2008-05-06 18:16:20 +00:00
Mikhail Glushenkov
3534026221 Use edge weights to choose the right linker based on input language names. 
llvm-svn: 50759
 2008-05-06 18:15:12 +00:00
Mikhail Glushenkov
78aa308f84 Add a --linker command-line option, make all tests pass. 
llvm-svn: 50755
 2008-05-06 18:13:00 +00:00
Mikhail Glushenkov
ffc7ee62c0 Add two (currently failing) tests. 
llvm-svn: 50752
 2008-05-06 18:11:21 +00:00
Mikhail Glushenkov
dc50e8c5fa Take object file as input and handle files with the same name correctly. 
llvm-svn: 50749
 2008-05-06 18:10:20 +00:00
Mikhail Glushenkov
40b652c238 First small tests for llvmc2. 
llvm-svn: 50734
 2008-05-06 17:24:54 +00:00
Duncan Sands
c96ff82e3e Testcase for PR2292. 
llvm-svn: 50718
 2008-05-06 14:56:40 +00:00
Evan Cheng
a84ed06284 Fix PR2287. Darwin passes mmx values in register in 64-mode, not Linux. 
llvm-svn: 50716
 2008-05-06 07:23:50 +00:00
Dan Gohman
faf9df7227 Correct the value of LowBits in srem and urem handling in 
ComputeMaskedBits.

llvm-svn: 50692
 2008-05-06 00:51:48 +00:00
Chris Lattner
50d16c2939 Fix a crash when threading a block that includes a MRV call result. 
DemoteRegToStack doesn't work with MRVs yet, because it relies on the
ability to load/store things.

This fixes PR2285.

llvm-svn: 50667
 2008-05-05 20:21:22 +00:00
Mon P Wang
84a269e023 Added addition atomic instrinsics and, or, xor, min, and max. 
llvm-svn: 50663
 2008-05-05 19:05:59 +00:00
Chris Lattner
ca94848f66 no need for eh info 
llvm-svn: 50658
 2008-05-05 18:24:33 +00:00
Dan Gohman
c860d9c77c Add AsmPrinter support for emitting a directive to declare that 
the code being generated does not require an executable stack.

Also, add target-specific code to make use of this on Linux
on x86. 

llvm-svn: 50634
 2008-05-05 00:28:39 +00:00
Owen Anderson
611b415d12 Fix PR1098 by correcting the postdominators analysis. 
Patch by Florian Brandner.

llvm-svn: 50628
 2008-05-04 21:07:35 +00:00
Evan Cheng
a7747df955 Select vector shift with non-immediate i32 shift amount operand by first moving the operand into the right register. 
llvm-svn: 50619
 2008-05-04 09:15:50 +00:00
Evan Cheng
c1c2adbfc6 Add separate intrinsics for MMX / SSE shifts with i32 integer operands. This allow us to simplify the horribly complicated matching code. 
llvm-svn: 50601
 2008-05-03 00:52:09 +00:00
Chris Lattner
5346b6b0a7 verify builtin optimization works like gcc. 
llvm-svn: 50594
 2008-05-02 22:07:34 +00:00
Dan Gohman
27156711ef Fix a mistake in the computation of leading zeros for udiv. 
llvm-svn: 50591
 2008-05-02 21:30:02 +00:00
Chris Lattner
96467cc665 strength reduce exp2 into ldexp, rdar://5852514 
llvm-svn: 50586
 2008-05-02 18:43:35 +00:00
Chris Lattner
8cc3e89b87 specify an arch for non-x86 hosts. 
llvm-svn: 50576
 2008-05-02 15:11:58 +00:00
Dan Gohman
04e2b94842 Update old-style syntax in some "not grep" tests. 
llvm-svn: 50560
 2008-05-01 23:50:07 +00:00
Dale Johannesen
4ab8b00dfa New test for bug fixed in 50545. 
llvm-svn: 50548
 2008-05-01 22:50:14 +00:00
Dan Gohman
793c9fed45 Fix an overaggressive SimplifyDemandedBits optimization on urem. This 
fixes the 254.gap regression on x86 and the 403.gcc regression on x86-64.

llvm-svn: 50537
 2008-05-01 19:13:24 +00:00
Bill Wendling
81b5245cec Adding testcase. 
llvm-svn: 50536
 2008-05-01 18:41:09 +00:00
Chris Lattner
e9bbe8e6b6 don't randomly miscompile seto/setuo just because we are in 
ffastmath mode.  This fixes rdar://5902801, a miscompilation
of gcc.dg/builtins-8.c.

Bill, please pull this into Tak.

llvm-svn: 50523
 2008-05-01 07:26:11 +00:00
Chris Lattner
9d73228708 fix typo 
llvm-svn: 50519
 2008-05-01 06:16:48 +00:00
Chris Lattner
9a678d6f55 instcombine does memset optzns. 
llvm-svn: 50518
 2008-05-01 06:16:38 +00:00
Chris Lattner
926efd9174 simplifylibcalls doesn't optimize llvm.memmove, instcombine does. 
llvm-svn: 50517
 2008-05-01 06:14:24 +00:00
Chris Lattner
d4bf588b85 move some tests from libcall optimizer suite. 
llvm-svn: 50516
 2008-05-01 06:13:48 +00:00
Arnold Schwaighofer
29a654857a Really commit the test checking the argument lowering behaviour on x86-64 :). 
llvm-svn: 50478
 2008-04-30 09:19:47 +00:00
Arnold Schwaighofer
f58a35e2ec Tail call optimization improvements: 
Move platform independent code (lowering of possibly overwritten
arguments, check for tail call optimization eligibility) from
target X86ISelectionLowering.cpp to TargetLowering.h and
SelectionDAGISel.cpp.

Initial PowerPC tail call implementation:

Support ppc32 implemented and tested (passes my tests and
test-suite llvm-test).  
Support ppc64 implemented and half tested (passes my tests).
On ppc tail call optimization is performed if 
  caller and callee are fastcc
  call is a tail call (in tail call position, call followed by ret)
  no variable argument lists or byval arguments
  option -tailcallopt is enabled
Supported:
 * non pic tail calls on linux/darwin
 * module-local tail calls on linux(PIC/GOT)/darwin(PIC)
 * inter-module tail calls on darwin(PIC)
If constraints are not met a normal call will be emitted.

A test checking the argument lowering behaviour on x86-64 was added.

llvm-svn: 50477
 2008-04-30 09:16:33 +00:00
Owen Anderson
f8c80ca156 Move this test to LoopDeletion, where it now passes. 
llvm-svn: 50474
 2008-04-30 07:17:22 +00:00
Chris Lattner
15195e00ee move lowering of llvm.memset -> store from simplify libcalls 
to instcombine.

llvm-svn: 50472
 2008-04-30 06:39:11 +00:00
Chris Lattner
ce01263bff no reason for simplifylibcalls to simplify intrinsics, instcombine does 
a fine job.

llvm-svn: 50470
 2008-04-30 06:12:15 +00:00
Chris Lattner
a62a4d407a remove redundant check. 
llvm-svn: 50469
 2008-04-30 06:06:37 +00:00
Owen Anderson
2caa79ae70 Fix a bug in memcpyopt where the memcpy-memcpy transform was never being applied because 
we were checking for it in the wrong order.  This caused a miscompilation because the
return slot optimization assumes that the call it is dealing with is NOT a memcpy.

llvm-svn: 50444
 2008-04-29 21:26:06 +00:00
Chris Lattner
5bd55b0885 don't eliminate load from volatile value on paths where the load is dead. 
This fixes the second half of PR2262

llvm-svn: 50430
 2008-04-29 17:28:22 +00:00
Chris Lattner
4b5d48a3f0 make this test reduced and *valid* 
llvm-svn: 50429
 2008-04-29 17:25:32 +00:00
Chris Lattner
7099f3c400 fix a subtle volatile handling bug. 
llvm-svn: 50428
 2008-04-29 17:13:43 +00:00
Chris Lattner
b3972afe89 new testcase for PR2094. The inline asms should not pin allocas to the 
stack anymore.

llvm-svn: 50397
 2008-04-29 05:53:29 +00:00
Chris Lattner
51fe8415da don't delete the last store to an alloca if the store is volatile. 
llvm-svn: 50390
 2008-04-29 04:58:38 +00:00
Chris Lattner
0f63b8fecc make the vector conversion magic handle multiple results. 
We now compile test2/test3 to:

_test2:
	## InlineAsm Start
	set %xmm0, %xmm1
	## InlineAsm End
	addps	%xmm1, %xmm0
	ret
_test3:
	## InlineAsm Start
	set %xmm0, %xmm1
	## InlineAsm End
	paddd	%xmm1, %xmm0
	ret

as expected.

llvm-svn: 50389
 2008-04-29 04:48:56 +00:00
Chris Lattner
e75d09711d add support for multiple return values in inline asm. This is a step 
towards PR2094.  It now compiles the attached .ll file to:

_sad16_sse2:
	movslq	%ecx, %rax
	## InlineAsm Start
	%ecx %rdx %rax %rax %r8d %rdx %rsi
	## InlineAsm End
	## InlineAsm Start
	set %eax
	## InlineAsm End
	ret

which is pretty decent for a 3 output, 4 input asm.

llvm-svn: 50386
 2008-04-29 04:29:54 +00:00
Evan Cheng
381b094a2b Another extract_subreg coalescing bug. 
e.g.
vr1024<2> extract_subreg vr1025, 2
If vr1024 do not have the same register class as vr1025, it's not safe to coalesce this away. For example, vr1024 might be a GPR32 while vr1025 might be a GPR64.

llvm-svn: 50385
 2008-04-29 01:41:44 +00:00
Evan Cheng
8696eb18c1 Add -march=x86. 
llvm-svn: 50380
 2008-04-28 23:31:41 +00:00
Dan Gohman
fa033a0fbd Update and_ops.ll according to the recent dagcombiner changes. 
Add a new test, and_ops_more.ll, which is XFAIL'd, to
record the parts of and_ops.ll that were affected by this
change.

llvm-svn: 50379
 2008-04-28 23:26:22 +00:00
Evan Cheng
3167c716f2 Test case. 
llvm-svn: 50377
 2008-04-28 22:14:34 +00:00
Dan Gohman
9e4db7f0bd Fix DSE to not eliminate volatile loads with no uses. 
llvm-svn: 50370
 2008-04-28 19:51:27 +00:00
Dan Gohman
1b7238e6e4 Teach InstCombine's ComputeMaskedBits what SelectionDAG's 
ComputeMaskedBits knows about cttz, ctlz, and ctpop. Teach
SelectionDAG's ComputeMaskedBits what InstCombine's knows
about SRem. And teach them both some things about high bits
in Mul, UDiv, URem, and Sub. This allows instcombine and
dagcombine to eliminate sign-extension operations in
several new cases.

llvm-svn: 50358
 2008-04-28 17:02:21 +00:00
Chris Lattner
ede7e89144 Fix PR2256, yet another miscompilation in simplifycfg of i 
multiple return values.

Bill, please pull this into Tak.

llvm-svn: 50332
 2008-04-28 00:19:07 +00:00
Chris Lattner
39a4281deb Implement a signficant optimization for inline asm: 
When choosing between constraints with multiple options,
like "ir", test to see if we can use the 'i' constraint and
go with that if possible.  This produces more optimal ASM in
all cases (sparing a register and an instruction to load it),
and fixes inline asm like this:

void test () {
  asm volatile (" %c0 %1 " : : "imr" (42), "imr"(14));
}

Previously we would dump "42" into a memory location (which
is ok for the 'm' constraint) which would cause a problem
because the 'c' modifier is not valid on memory operands.

Isn't it great how inline asm turns 'missed optimization'
into 'compile failed'??

Incidentally, this was the todo in 
PowerPC/2007-04-24-InlineAsm-I-Modifier.ll

Please do NOT pull this into Tak.

llvm-svn: 50315
 2008-04-27 00:37:18 +00:00
Chris Lattner
2798e42a9f When SRoA'ing a global variable, make sure the new globals get the 
appropriate alignment.  This fixes a miscompilation of 252.eon on
x86-64 (rdar://5891920).

Bill, please pull this into Tak.

llvm-svn: 50308
 2008-04-26 07:40:11 +00:00
Nate Begeman
1723f6af2b Feedback from chris 
llvm-svn: 50305
 2008-04-25 21:47:35 +00:00
Nate Begeman
acd7e1c464 Add a testcase for the recent "handle variable vector insert elt in mem" patch 
llvm-svn: 50303
 2008-04-25 21:26:59 +00:00
Evan Cheng
db1497fa77 Update tests. 
llvm-svn: 50293
 2008-04-25 20:13:47 +00:00
Evan Cheng
11f101a800 Special handling for MMX values being passed in either GPR64 or lower 64-bits of XMM registers. 
llvm-svn: 50289
 2008-04-25 19:11:04 +00:00
Dan Gohman
c4b6768db4 Remove the code from CodeGenPrepare that moved getresult instructions 
to the block that defines their operands. This doesn't work in the
case that the operand is an invoke, because invoke is a terminator
and must be the last instruction in a block.

Replace it with support in SelectionDAGISel for copying struct values
into sequences of virtual registers.

llvm-svn: 50279
 2008-04-25 18:27:55 +00:00
Chris Lattner
fb539f4468 new testcase 
llvm-svn: 50274
 2008-04-25 18:11:06 +00:00
Anton Korobeynikov
dad01d86e0 Update test 
llvm-svn: 50272
 2008-04-25 17:54:21 +00:00
Nick Lewycky
1f831c0f57 Remove 'unwinds to' support from mainline. This patch undoes r47802 r47989 
r48047 r48084 r48085 r48086 r48088 r48096 r48099 r48109 and r48123.

llvm-svn: 50265
 2008-04-25 16:53:59 +00:00
Evan Cheng
39ae78cadb MMX argument passing fixes: 
On Darwin / Linux x86-32, v8i8, v4i16, v2i32 values are passed in MM[0-2].                                                                                                                                      
On Darwin / Linux x86-32, v1i64 values are passed in memory.                                                                                                                                                    
On Darwin x86-64, v8i8, v4i16, v2i32 values are passed in XMM[0-7].                                                                                                                                     
On Darwin x86-64, v1i64 values are passed in 64-bit GPRs.

llvm-svn: 50257
 2008-04-25 07:56:45 +00:00
Chris Lattner
8c9f6c929a Loosen up an assertion to allow intrinsics. I really have no 
idea what this code (findNonImmUse) does, so I'm only guessing 
that this is the right thing.  It would be really really nice
if this had comments and perhaps switched to SmallPtrSet
(hint hint) :)

This fixes rdar://5886601, a crash on gcc.target/i386/sse4_1-pblendw.c

llvm-svn: 50252
 2008-04-25 05:13:01 +00:00
Chris Lattner
1a6268f776 Don't infininitely thread branches when a threaded edge 
goes back to the block, e.g.:

  Threading edge through bool from 'bb37.us.thread3829' to 'bb37.us' with cost: 1, across block:

bb37.us:		; preds = %bb37.us.thread3829, %bb37.us, %bb33
	%D1361.1.us = phi i32 [ %tmp36, %bb33 ], [ %D1361.1.us, %bb37.us ], [ 0, %bb37.us.thread3829 ]		; <i32> [#uses=2]
	%tmp39.us = icmp eq i32 %D1361.1.us, 0		; <i1> [#uses=1]
	br i1 %tmp39.us, label %bb37.us, label %bb42.us

llvm-svn: 50251
 2008-04-25 04:12:29 +00:00
Evan Cheng
484060ba4a Fix bug in x86 memcpy / memset lowering. If there are trailing bytes not handled by rep instructions, a new memcpy / memset is introduced for them. However, since source / destination addresses are already adjusted, their offsets should be zero. 
llvm-svn: 50239
 2008-04-25 00:26:43 +00:00
Evan Cheng
906911f9e5 New test. 
llvm-svn: 50229
 2008-04-24 20:01:58 +00:00
Devang Patel
fed5cd5fe7 Add EXTRA_OPTIONS on the llvmgxx command line. 
llvm-svn: 50217
 2008-04-24 17:59:03 +00:00
Devang Patel
7ff3d5b65b Add EXTRA_OPTIONS on the llvmgcc command line. 
llvm-svn: 50216
 2008-04-24 17:54:25 +00:00
Chris Lattner
be35a0c224 Split some code out of the main SimplifyCFG loop into its own function. 
Fix said code to handle merging return instructions together correctly
when handling multiple return values.

llvm-svn: 50199
 2008-04-24 00:01:19 +00:00
Anton Korobeynikov
d6ec8965f7 Fix tests due to llvm2cpp move to llc target 
llvm-svn: 50191
 2008-04-23 22:41:53 +00:00
Dan Gohman
afa475f207 Add support to codegen for getresult instructions with undef operands. 
llvm-svn: 50180
 2008-04-23 20:21:29 +00:00