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Author SHA1 Message Date
Chris Lattner
f98fefc1ea Fix a major source of "type unsafety", where a cast is neccesary, but can 
be put either before or after a load.  We chose to cast the value loaded
instead of the pointer to load from.

Fixes bug: test/Regression/Transforms/LevelRaise/2002-05-10-LoadPeephole.ll

llvm-svn: 2621
 2002-05-14 05:23:45 +00:00
Chris Lattner
b7688286c1 Implement elimination of loads 
llvm-svn: 2620
 2002-05-14 05:02:40 +00:00
Chris Lattner
9d013ca535 Invoke inst has side effects! 
llvm-svn: 2619
 2002-05-14 04:20:25 +00:00
Chris Lattner
e14cba5c34 New file 
llvm-svn: 2618
 2002-05-13 22:19:50 +00:00
Chris Lattner
fc14cb90a2 Trivial cleanups 
llvm-svn: 2617
 2002-05-13 22:04:46 +00:00
Chris Lattner
2735171cf5 Add method to check to see if two _Instructions_ dominate each other 
llvm-svn: 2616
 2002-05-13 22:03:16 +00:00
Chris Lattner
1b769f2a94 Initial checkin of LICM pass 
llvm-svn: 2615
 2002-05-10 22:44:58 +00:00
Chris Lattner
b04d5ecc11 expose LICM pass 
llvm-svn: 2614
 2002-05-10 22:44:37 +00:00
Chris Lattner
97b501879c Add LICM pass to compiler 
llvm-svn: 2613
 2002-05-10 22:44:31 +00:00
Chris Lattner
5a85ea20e5 Add prototype for LICM pass 
llvm-svn: 2612
 2002-05-10 22:44:16 +00:00
Chris Lattner
1e198023b9 Add testcase for when there is no loop header 
llvm-svn: 2611
 2002-05-10 22:43:26 +00:00
Chris Lattner
717e99c79a A basic test that LICM is working 
llvm-svn: 2610
 2002-05-10 22:27:49 +00:00
Chris Lattner
c2766aada8 Run LICM tests 
llvm-svn: 2609
 2002-05-10 22:21:38 +00:00
Chris Lattner
1215378a67 run LICM tests 
llvm-svn: 2608
 2002-05-10 22:21:25 +00:00
Chris Lattner
708b869951 Make sure to call the derived visit versions from the ranged iterator. 
llvm-svn: 2607
 2002-05-10 22:21:05 +00:00
Chris Lattner
590bcc9629 We actually need this code for the release build to prevent link errors, 
un#ifdef it.

llvm-svn: 2606
 2002-05-10 18:54:35 +00:00
Chris Lattner
ff9f677248 Add explicit abort so optimized build knows that the function does not return 
llvm-svn: 2605
 2002-05-10 18:53:55 +00:00
Chris Lattner
625396c63a Add an explicit abort so that the optimized build knows the function does 
not return.

llvm-svn: 2604
 2002-05-10 18:53:21 +00:00
Chris Lattner
b9e591a7b5 * Allow a profile'd code build to be done with a simple 'make ENABLE_PROFILING=1' 
* Only build tags for include, lib, and tools, not tests
* Turn on verbose output from bison to get information about shift/reduce
  conficts (why isn't this the default??)

llvm-svn: 2603
 2002-05-10 18:51:54 +00:00
Chris Lattner
24656ee8e4 Expose the lowerallocs pass 
llvm-svn: 2602
 2002-05-10 15:43:07 +00:00
Chris Lattner
adba963886 Add support for printing out statistics information when -stats is added to 
the command line

llvm-svn: 2601
 2002-05-10 15:38:35 +00:00
Chris Lattner
1bf8912c74 Fix some bugs, straighten stuff out, more work needs to be done. 
llvm-svn: 2600
 2002-05-10 15:37:35 +00:00
Chris Lattner
a9e4b660ff Initial checkin of Statistic class 
llvm-svn: 2599
 2002-05-10 15:36:56 +00:00
Chris Lattner
8c131ef721 Initial checkin of Statistic class. 
llvm-svn: 2598
 2002-05-10 15:36:46 +00:00
Chris Lattner
0671b3db5d * Add support for the -stats command line option to report how much is changed 
* Make cast-of-self-ty DCE the dead cast instruction immediately instead of
  waiting for it to be DCE'd by another sweep over the function.  This speeds
  this up noticably.

llvm-svn: 2597
 2002-05-10 15:29:25 +00:00
Chris Lattner
d9e5159118 New testcase 
llvm-svn: 2596
 2002-05-10 15:14:54 +00:00
Chris Lattner
ca6c5955f4 remove deprecated getInstType() method 
llvm-svn: 2595
 2002-05-10 13:28:47 +00:00
Chris Lattner
25ae3ddf64 Expose the pi node insertion pass. 
llvm-svn: 2594
 2002-05-10 05:41:49 +00:00
Chris Lattner
2d91be1ab7 Initial checkin of the PiNodeInsertion pass 
llvm-svn: 2593
 2002-05-10 05:41:34 +00:00
Chris Lattner
93ba8ba0a9 Add prototype for the PiNodeInserter pass 
llvm-svn: 2592
 2002-05-10 05:40:37 +00:00
Chris Lattner
5295e03aa9 Test the Pi node inserter 
llvm-svn: 2591
 2002-05-10 05:38:39 +00:00
Chris Lattner
bfc208b405 Initial checkin of testcases for Pi node inserter 
llvm-svn: 2590
 2002-05-10 05:38:18 +00:00
Chris Lattner
a98304f4fa Last minor cleanups, this code still does not work for all cases, but it 
works much better than it used to.

llvm-svn: 2588
 2002-05-09 21:31:18 +00:00
Chris Lattner
4ece8deba5 Two Cleanups to generated C code: 
1. Avoid printing *(&globalvariable), instead print globalvariable alone
   as a special case.
2. Inline subexpressions into expressions as much as legal that preserves
   execution characteristics of expressions.  Now we get nice (but
   over-parenthesized, oh well) things like:

     ltmp_428_7 = spec__putc(((unsigned char )((bsBuff) >> 24)), (bsStream));

   instead of five seperate instructions (bsBuff & bsStream are globals).

llvm-svn: 2587
 2002-05-09 21:18:38 +00:00
Chris Lattner
9a9b801669 * Remove CInstPrintVisitor class, incorporating it into the CWriter class 
* Reorder code in the file to make it more logically laid out.

llvm-svn: 2586
 2002-05-09 20:53:56 +00:00
Chris Lattner
3fd3c03371 Remove CLocalVars data structure entirely, instead of building stuff and 
then printing it out, just print as we go.

llvm-svn: 2585
 2002-05-09 20:39:03 +00:00
Chris Lattner
5ed180c1bd Simplify code by removing InstLocalVarsVisitor, replacing it with a simple 
inst_iterator.

llvm-svn: 2584
 2002-05-09 20:33:35 +00:00
Chris Lattner
aa1d35be51 * Clean up how PHI nodes are handled 
* Correct global variable references
* Fix loads & stores with zero indices
* Do not emit an else part of a branch if there is no code (no phi node
  and a fallthrough branch), makes code more readable to get:
  if (l2_cond240) {
    goto l13_bb10;
  }

with no else{} branch

llvm-svn: 2583
 2002-05-09 20:14:10 +00:00
Chris Lattner
cd326f096f Handle setcc <global*>, 0 instructions, Global pointers are never null! 
llvm-svn: 2582
 2002-05-09 20:11:54 +00:00
Chris Lattner
9de1aeb91c Give the longer name to the instruction that will probably be eliminated later 
llvm-svn: 2581
 2002-05-09 20:11:23 +00:00
Chris Lattner
160b51de7d New testcase for wierd combine opportunity found in bzip2 benchmark 
llvm-svn: 2580
 2002-05-09 19:52:36 +00:00
Chris Lattner
94e4578db4 Emit: 
l3_reg109 = l81_this->field0;
Instead of:
  l3_reg109 = l81_this[0u].field0;

where possible

llvm-svn: 2579
 2002-05-09 15:59:50 +00:00
Chris Lattner
97ae8c039e * Print structures types correctly 
* Clean up generated code to not emit basic block labels and goto
  instructions if they are unneccesary (for example, fall throughs)

llvm-svn: 2578
 2002-05-09 15:49:41 +00:00
Chris Lattner
93fb65370c * Continue cleanup of type printing code 
* Print a newline after a malloc instruction
* Convert unprintable characters to x_ instead of _x so that we don't
  generate identifiers that start with underscores

llvm-svn: 2577
 2002-05-09 15:18:52 +00:00
Chris Lattner
b3acea93cf Gut the type printing code so there is only one copy of it instead of 3 
llvm-svn: 2576
 2002-05-09 14:40:11 +00:00
Chris Lattner
619c55baec * Remove dead "constant printing" code 
* Mangle names with only a prefix so that they are easier on the eyes.
* Put spaces around binary operators with low precedence to make them easier to read
* Don't prefix function names with &, although it's correct, it's unnecesary and
  easier to read without it.

llvm-svn: 2575
 2002-05-09 05:16:40 +00:00
Chris Lattner
cde698978f Remove gross "Operand" instance variable 
Remove lots of unneccesary arguments to methods

llvm-svn: 2574
 2002-05-09 04:39:00 +00:00
Chris Lattner
e8573f21c7 Simplify and clean up function calls. 
Now indirect function calls work, except that function pointer types are not correct.

llvm-svn: 2573
 2002-05-09 04:21:21 +00:00
Chris Lattner
72286b8a3b * Remove dead function 
* Print C strings correctly
* Expand C escape sequences nicely (ie \n \t, etc get generated instead of hex escapes)

llvm-svn: 2572
 2002-05-09 03:56:52 +00:00
Chris Lattner
c7b3367aad Make Getelementptr, load & store all work the right way. 
Handle global variables correctly.

llvm-svn: 2571
 2002-05-09 03:50:42 +00:00