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19876 Commits

Author SHA1 Message Date
Rafael Espindola ff33241e16 call libc memcpy/memset if array size is bigger then threshold. 
Coping 100MB array (after a warmup) shows that glibc 2.6.1 implementation on
x86-64 (core 2) is 30% faster (from 0.270917s to 0.188079s)

llvm-svn: 41479
 2007-08-27 10:18:20 +00:00
Anton Korobeynikov 24fb6b2f8c Don't promote volatile loads/stores. This is needed (for example) to handle setjmp/longjmp properly. 
This fixes PR1520.

llvm-svn: 41461
 2007-08-26 21:43:30 +00:00
Owen Anderson 2b9ec7ff33 Don't DSe volatile stores. 
llvm-svn: 41456
 2007-08-26 21:14:47 +00:00
Dale Johannesen b6d2bec418 Revise per review comments. 
llvm-svn: 41409
 2007-08-26 01:18:27 +00:00
Dale Johannesen 2cfcf70f82 Add APFloat interface to ConstantFPSDNode. Change 
over uses in DAGCombiner.  Fix interfaces to work
with APFloats.

llvm-svn: 41407
 2007-08-25 22:10:57 +00:00
Devang Patel 6114751544 Move exit condition and exit branch from exiting block into loop header and dominator info. This avoid execution of dead iteration. Loop is already filter in the beginning such that this change is safe. 
llvm-svn: 41394
 2007-08-25 02:39:24 +00:00
Devang Patel c1ef32ef3d Constant split values needs upper bound and lower bound check, just like any other split value. 
llvm-svn: 41389
 2007-08-25 01:09:14 +00:00
Chris Lattner 2ed652f11d Allow target constants to be illegal types. The target should 
know how to handle them.  This fixes 
test/CodeGen/Generic/asm-large-immediate.ll

llvm-svn: 41388
 2007-08-25 01:00:22 +00:00
Devang Patel 4e63e1f5b5 While calculating upper loop bound for first loop and lower loop bound for second loop, take care of edge cases. 
llvm-svn: 41387
 2007-08-25 00:56:38 +00:00
Chris Lattner dbfc4e4b07 Teach the dag scheduler to handle inline asm nodes with multi-value immediate operands. 
llvm-svn: 41386
 2007-08-25 00:53:07 +00:00
Bill Wendling 48597b4ff8 The personality function might need to be declared as: 
.set  Lset0,___gxx_personality_v0-.
    .long Lset0

on some targets. Make it so!

llvm-svn: 41385
 2007-08-25 00:51:55 +00:00
Chris Lattner d8c9cb9182 rename isOperandValidForConstraint to LowerAsmOperandForConstraint, 
changing the interface to allow for future changes.

llvm-svn: 41384
 2007-08-25 00:47:38 +00:00
Dale Johannesen bdea32d812 Poison APFloat::operator==. Replace existing uses with bitwiseIsEqual. 
This means backing out the preceding change to Constants.cpp, alas.

llvm-svn: 41378
 2007-08-24 22:09:56 +00:00
Dale Johannesen 7891d8edf0 Use APFloat internally for ConstantFPSDNode. 
llvm-svn: 41372
 2007-08-24 20:59:15 +00:00
Chris Lattner 0b490b0d38 sink clone() down the class hierarchy from CmpInst into ICmpInst/FCmpInst. 
This eliminates a conditional on that path, and ensures ICmpInst/FCmpInst
both have an out-of-line virtual method to home the class.

llvm-svn: 41371
 2007-08-24 20:48:18 +00:00
Devang Patel f5a01bf025 Fix regression that I caused yesterday night while adding logic to select appropriate split condition branch. 
llvm-svn: 41365
 2007-08-24 19:32:26 +00:00
Chris Lattner a124f69c52 Disable EH generation until PPC works 100%. 
llvm-svn: 41360
 2007-08-24 16:00:15 +00:00
Chris Lattner 51883acec1 add a note 
llvm-svn: 41359
 2007-08-24 15:17:59 +00:00
Devang Patel 4bc9298f2a It is not safe to execute split condition's true branch first all the time. If split 
condition predicate is GT or GE then execute false branch first.

llvm-svn: 41358
 2007-08-24 06:17:19 +00:00
Devang Patel 4be56a5d12 Reject ICMP_NE as index split condition. 
llvm-svn: 41357
 2007-08-24 06:02:25 +00:00
Devang Patel 5e46fac6de Tightenup loop filter. 
llvm-svn: 41356
 2007-08-24 05:36:56 +00:00
Devang Patel 504dc0aaed Remove incomplete cost analysis. 
llvm-svn: 41354
 2007-08-24 05:21:13 +00:00
Dale Johannesen 918c33c67a Revised per review feedback from previous patch. 
llvm-svn: 41353
 2007-08-24 05:08:11 +00:00
Chris Lattner 3da18eb22a silence some warnings in an optimized build. 
llvm-svn: 41352
 2007-08-24 03:02:34 +00:00
Dale Johannesen a719a60609 Change internal representation of ConstantFP to use APFloat. 
Interface to rest of the compiler unchanged, as yet.

llvm-svn: 41348
 2007-08-24 00:56:33 +00:00
Chris Lattner 33800d1428 add some notes on really poor codegen. 
llvm-svn: 41319
 2007-08-23 15:22:07 +00:00
Chris Lattner 92c6a65d4e new example 
llvm-svn: 41318
 2007-08-23 15:16:03 +00:00
Anton Korobeynikov 97cdac8d19 Perform correct codegen for eh_dwarf_cfa intrinsic. 
llvm-svn: 41316
 2007-08-23 07:21:06 +00:00
Chris Lattner b0f158cfdf rename APInt::toString -> toStringUnsigned for symmetry with toStringSigned() 
Add an APSInt::toString() method.

llvm-svn: 41309
 2007-08-23 05:15:32 +00:00
Devang Patel 887db2d832 Remove dead code. 
llvm-svn: 41295
 2007-08-22 21:07:41 +00:00
Devang Patel 6f4f23320d Fix typo. 
llvm-svn: 41292
 2007-08-22 20:55:18 +00:00
Devang Patel 31206b56d5 Cosmetic change 
"True Loop" and "False Loop" naming terminology to refer two loops
after loop cloning is confusing. Instead just use A_Loop and B_Loop.

llvm-svn: 41287
 2007-08-22 19:33:29 +00:00
Andrew Lenharth beb80a9832 move this check. ppc outputs .no_dead_strip properly 
llvm-svn: 41286
 2007-08-22 19:33:11 +00:00
Bill Wendling 862afea91e Add the PCSymbol for Darwin x86 platforms. 
llvm-svn: 41284
 2007-08-22 18:44:05 +00:00
Devang Patel 90da534987 Refactor loop condition check in a separate function. 
llvm-svn: 41282
 2007-08-22 18:27:01 +00:00
Devang Patel cd8beb7645 Fix thinko. 
Starting value of second loop's induction variable can not be lower 
then starting value of original loop's induction variable.

llvm-svn: 41280
 2007-08-22 18:07:47 +00:00
Devang Patel a12000d572 Rename bunch of variables. 
llvm-svn: 41250
 2007-08-21 21:12:02 +00:00
Devang Patel f98db5e62a Preserve LCSSA. 
llvm-svn: 41246
 2007-08-21 19:47:46 +00:00
Devang Patel f5e520d892 Use SmallVector. 
llvm-svn: 41230
 2007-08-21 16:54:51 +00:00
Devang Patel a9e7c4f827 No need to hardcode SmallVector size. 
llvm-svn: 41228
 2007-08-21 16:39:43 +00:00
Bruno Cardoso Lopes b10580ac1e InlineAsm asm support for integer registers added 
llvm-svn: 41225
 2007-08-21 16:09:25 +00:00
Bruno Cardoso Lopes d4b9945a21 Instruction Itinerary attribution fixed 
llvm-svn: 41224
 2007-08-21 16:06:45 +00:00
Chris Lattner 913849b5df Fix potentially N^2 behavior handling arrays with many of the 
same value which get RAUW'd.  This speeds up reading the .bc
file in PR1616 from 852s to 0.19s on my G5 with a debug build.

llvm-svn: 41209
 2007-08-21 00:55:23 +00:00
Anton Korobeynikov f335679b52 Use only 1 knob to enable exceptions on Darwin :). 
llvm-svn: 41208
 2007-08-21 00:31:30 +00:00
Devang Patel b5933bbbd5 Use SmallVector instead of std::vector. 
llvm-svn: 41207
 2007-08-21 00:31:24 +00:00
Chris Lattner 8e5b2c27a3 simplify code, improve a comment. 
llvm-svn: 41205
 2007-08-21 00:21:07 +00:00
Devang Patel 8f4228d619 s/ExitBlock/ExitingBlock/g 
llvm-svn: 41204
 2007-08-20 23:51:18 +00:00
Chris Lattner fe02c1f97f initial checkin of Neil's APFloat work. 
llvm-svn: 41203
 2007-08-20 22:49:32 +00:00
Anton Korobeynikov 5849a625ff - Use correct header for SCEV inside LoopPass.cpp 
- Move SCEVExpander::expand() out-of-line workarounding possible toolchain bug

llvm-svn: 41197
 2007-08-20 21:17:26 +00:00
Devang Patel 49c4f9a889 Replace indunction variable with split value in loop body. 
This fixes art miscompile.

llvm-svn: 41195
 2007-08-20 20:49:01 +00:00