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3091 Commits

Author SHA1 Message Date
Evan Cheng
b8861dcb04 Re-apply 101075 and fix it properly. Just reuse the debug info of the branch instruction being optimized. There is no need to --I which can deref off start of the BB. 
llvm-svn: 101162
 2010-04-13 18:50:27 +00:00
Eric Christopher
330ca0c937 Temporarily revert r101075, it's causing invalid iterator assertions 
in a nightly tester.

llvm-svn: 101158
 2010-04-13 18:37:58 +00:00
Chris Lattner
dabcd9738c add llvm codegen support for -ffunction-sections and -fdata-sections, 
patch by Sylvere Teissier!

llvm-svn: 101106
 2010-04-13 00:36:43 +00:00
Evan Cheng
ec21a36774 Use .set expression for x86 pic jump table reference to reduce assembly relocation. rdar://7738756 
llvm-svn: 101085
 2010-04-12 23:07:17 +00:00
Bill Wendling
5a56f7fc20 Third time's a charm... 
llvm-svn: 101081
 2010-04-12 22:43:21 +00:00
Bill Wendling
e1bf74de52 Genericize the label test. 
llvm-svn: 101079
 2010-04-12 22:40:37 +00:00
Bill Wendling
fd58812c95 Correct test to test what I mean it to test. 
llvm-svn: 101077
 2010-04-12 22:25:42 +00:00
Bill Wendling
1f2e71928c Micro-optimization: 
If we have this situation:

    jCC  L1
    jmp  L2
L1:
  ...
L2:
  ...

We can get a small performance boost by emitting this instead:

    jnCC L2
L1:
  ...
L2:
  ...

This testcase shows an example of this:

float func(float x, float y) {
    double product = (double)x * y;
    if (product == 0.0)
        return product;
    return product - 1.0;
}

llvm-svn: 101075
 2010-04-12 22:19:57 +00:00
Evan Cheng
90788354c9 Enable post regalloc machine licm by default. 
llvm-svn: 101023
 2010-04-12 06:25:28 +00:00
Benjamin Kramer
f040734da3 Make sure this test tests something. 
llvm-svn: 100879
 2010-04-09 19:03:31 +00:00
Bob Wilson
ee7665078a Add a testcase for svn r100568. 
llvm-svn: 100876
 2010-04-09 18:29:29 +00:00
Chris Lattner
5408e8a62b "On SPU, variables in the .bss section that are allocated with the .lcomm directive are not aligned on 16 byte boundaries. This causes misaligned loads, as the generated assembly assumes this "default" alignment. 
this patch disables .lcomm in favour of '.local .comm'

Patch by Kalle Raisklia!

llvm-svn: 100875
 2010-04-09 18:27:03 +00:00
Dan Gohman
a451b859f9 Merge a few fast-isel tests. 
llvm-svn: 100860
 2010-04-09 15:03:55 +00:00
Evan Cheng
619f1b8a94 Coalescer should not delete copy instructions whose defs are partially dead. e.g. 
%RDI<def,dead> = MOV64rr %RAX<kill>, %EDI<imp-def>

llvm-svn: 100804
 2010-04-08 20:02:37 +00:00
Evan Cheng
3fa0b6fb03 Avoid using f64 to lower memcpy from constant string. It's cheaper to use i32 store of immediates. 
llvm-svn: 100751
 2010-04-08 07:37:57 +00:00
Dan Gohman
0a77dd29de When expanding expressions which are using post-inc mode for multiple loops, 
ensure that the expansion is dominated by the increments of those loops.

llvm-svn: 100748
 2010-04-08 05:57:57 +00:00
Chris Lattner
23334439e9 add newlines at the end of files. 
llvm-svn: 100705
 2010-04-07 22:53:17 +00:00
Dan Gohman
b5210c934f Generalize IVUsers to track arbitrary expressions rather than expressions 
explicitly split into stride-and-offset pairs. Also, add the
ability to track multiple post-increment loops on the same expression.

This refines the concept of "normalizing" SCEV expressions used for
to post-increment uses, and introduces a dedicated utility routine for
normalizing and denormalizing expressions.

This fixes the expansion of expressions which are post-increment users
of more than one loop at a time. More broadly, this takes LSR another
step closer to being able to reason about more than one loop at a time.

llvm-svn: 100699
 2010-04-07 22:27:08 +00:00
Dale Johannesen
4cdb545401 Split big test into multiple directories to cater to 
those who don't build all targets.

llvm-svn: 100688
 2010-04-07 20:43:35 +00:00
Chris Lattner
367cbc160c this has a pr! 
llvm-svn: 100637
 2010-04-07 18:04:56 +00:00
Chris Lattner
60e5f55565 fix a latent bug my inline asm stuff exposed: 
MachineOperand::isIdenticalTo wasn't handling metadata operands.

llvm-svn: 100636
 2010-04-07 18:03:19 +00:00
Sanjiv Gupta
b3557c497a Remove XFAIL for vg_leak as the leaks are fixed by 100601. 
llvm-svn: 100612
 2010-04-07 07:06:48 +00:00
Jakob Stoklund Olesen
370a3e553f Don't try to collapse DomainValues onto an incompatible SSE domain. 
This fixes the Bullet regression on i386/nocona.

llvm-svn: 100553
 2010-04-06 19:48:56 +00:00
Evan Cheng
7d177beb1d Add nounwind. 
llvm-svn: 100482
 2010-04-05 22:30:05 +00:00
Dan Gohman
2aff0055c1 Don't do code sinking on unreachable blocks. It's unprofitable and hazardous. 
llvm-svn: 100455
 2010-04-05 19:17:22 +00:00
Chris Lattner
779e051357 resolve a fixme. 
llvm-svn: 100346
 2010-04-04 19:28:59 +00:00
Evan Cheng
5d825988d0 Correctly lower memset / memcpy of undef. It should be a nop. PR6767. 
llvm-svn: 100208
 2010-04-02 19:36:14 +00:00
Dan Gohman
7051600e3f Revert the recent alignment changes. They're broken for -Os because, 
in particular, they end up aligning strings at 16-byte boundaries, and
there's no way for GlobalOpt to check OptForSize.

llvm-svn: 100172
 2010-04-02 03:04:37 +00:00
Evan Cheng
921fc2c77b After trivial coalescing, the MI being visited may have become a copy. Avoid adding it to CSE hash table since copies aren't being considered for CSE and they may be deleted. 
rdar://7819990

llvm-svn: 100170
 2010-04-02 02:21:24 +00:00
Dan Gohman
ec731a99fa Remove this initializer so that the optimizer doesn't convert 
unaligned loads into aligned loads.

llvm-svn: 100166
 2010-04-02 01:26:13 +00:00
Dan Gohman
d14fe2a5cd Update this test for the new preferred alignment heuristics. 
llvm-svn: 100165
 2010-04-02 01:24:08 +00:00
Evan Cheng
9508456bb6 In 64-bit mode, use i64 to lower memcpy / memset instead of f64. 
llvm-svn: 100137
 2010-04-01 20:27:45 +00:00
Evan Cheng
8728924812 - Avoid using floating point stores to implement memset unless the value is zero. 
- Do not try to infer GV alignment unless its type is sized. It's not possible to infer alignment if it has opaque type.

llvm-svn: 100118
 2010-04-01 18:19:11 +00:00
Evan Cheng
202b6327c4 Add -mcpu to memcpy / memset tests to ensure they behave the same on all hosts / targets. 
llvm-svn: 100101
 2010-04-01 08:25:26 +00:00
Evan Cheng
562bb43207 Fix sdisel memcpy, memset, memmove lowering: 
1. Makes it possible to lower with floating point loads and stores.
2. Avoid unaligned loads / stores unless it's fast.
3. Fix some memcpy lowering logic bug related to when to optimize a
   load from constant string into a constant.
4. Adjust x86 memcpy lowering threshold to make it more sane.
5. Fix x86 target hook so it uses vector and floating point memory
   ops more effectively.
rdar://7774704

llvm-svn: 100090
 2010-04-01 06:04:33 +00:00
Jakob Stoklund Olesen
58296f9543 Replace V_SET0 with variants for each SSE execution domain. 
llvm-svn: 99975
 2010-03-31 00:40:13 +00:00
Jakob Stoklund Olesen
13a7a0adff Fix typo. Thank you, valgrind. 
llvm-svn: 99974
 2010-03-31 00:40:08 +00:00
Jakob Stoklund Olesen
c6213a8bc0 Not all platforms start symbols with _ 
llvm-svn: 99959
 2010-03-30 23:12:48 +00:00
Jakob Stoklund Olesen
a027a6d4f2 Enable -sse-domain-fix by default. Now with tests! 
llvm-svn: 99954
 2010-03-30 22:47:00 +00:00
Eric Christopher
4c3a3208e3 Remove the pmulld intrinsic and autoupdate it as a vector multiply. 
Rewrite the pmulld patterns, and make sure that they fold in loads of
arguments into the instruction.

llvm-svn: 99910
 2010-03-30 18:49:01 +00:00
Benjamin Kramer
1be90cca94 XFAIL some PIC16 tests when running under valgrind-leaks. I don't expect these 
to be fixed any time soon.

llvm-svn: 99888
 2010-03-30 14:34:13 +00:00
Evan Cheng
b1ddb193c7 Fix PR4975. Avoid referencing empty vector. 
llvm-svn: 99840
 2010-03-29 21:27:30 +00:00
Chris Lattner
c0d5bcc160 From Kalle Raiskila: 
"the bigstack patch for SPU, with testcase. It is essentially the patch committed as 97091, and reverted as 97099, but with the following additions:
-in vararg handling, registers are marked to be live, to not confuse the register scavenger
-function prologue and epilogue are not emitted, if the stack size is 16. 16 means it is empty - there is only the register scavenger emergency spill slot, which is not used as there is no stack."

llvm-svn: 99819
 2010-03-29 17:38:47 +00:00
Chris Lattner
e04fb0a1a7 teach tblgen to allow patterns like (add (i32 (bitconvert (i32 GPR))), 4), 
transforming it into (add (i32 GPR), 4).  This allows us to write type
generic multi patterns and have tblgen automatically drop the bitconvert
in the case when the types align.  This allows us to fold an extra load
in the changed testcase.

llvm-svn: 99756
 2010-03-28 08:38:32 +00:00
Chris Lattner
1a838000ec add some nounwinds 
llvm-svn: 99752
 2010-03-28 07:58:37 +00:00
Chris Lattner
de8b42ce67 this takes an insane amount of time to run, disable it for now (PR6727) 
llvm-svn: 99751
 2010-03-28 07:58:09 +00:00
Evan Cheng
d1ee7e0ba3 Do not sibcall if stack needs to be dynamically aligned. 
llvm-svn: 99620
 2010-03-26 16:26:03 +00:00
Evan Cheng
377bb993d8 Allow trivial sibcall of vararg callee when no arguments are being passed. 
llvm-svn: 99598
 2010-03-26 02:13:13 +00:00
Evan Cheng
0b7dd682dd Try trivial remat before the coalescer gives up on a vr / physreg coalescing for fear of tying up a physical register. 
llvm-svn: 99575
 2010-03-26 00:07:25 +00:00
Jim Grosbach
2a0b14a387 switch the flag for using NEON for SP floating point to a subtarget 'feature'. 
Re-commit. This time complete with testsuite updates.

llvm-svn: 99570
 2010-03-25 23:47:34 +00:00