llvm-svn: 17431

llvm-svn: 17428

* Disable broken transforms for simplifying (setcc (cast X to larger), CI)
  where CC is not != or ==

llvm-svn: 17422

Make the bugpoint link reference the man page in the CommandGuide until
the Bugpoint.html file can describe bugpoint in a little more of a tutorial
style instead of just being a man page.

llvm-svn: 17416

NOTE: This doc needs to describe the bugpoint "subsystem" not the tool.

llvm-svn: 17415

llvm-svn: 17414

llvm-svn: 17413

llvm-svn: 17412

delete some dead methods

llvm-svn: 17410

llvm-svn: 17409

llvm-svn: 17408

We only need one instance of the vector that it contains at a time.

llvm-svn: 17407

llvm-svn: 17406

llvm-svn: 17405

llvm-svn: 17404

llvm-svn: 17403

llvm-svn: 17402

llvm-svn: 17401

llvm-svn: 17400

llvm-svn: 17399

llvm-svn: 17398

llvm-svn: 17397

llvm-svn: 17396

llvm-svn: 17395

llvm-svn: 17394

This is easier than attempting to figure out dual purpose columnar layouts
for multiple browser types. All browsers understand tables.

llvm-svn: 17393

llvm-svn: 17392

Make lex/yacc output cleaned only if in a directory that has those sources.

llvm-svn: 17391

#define CL0(a) case a: f(); goto c;
 #define CL1(a) CL0(a##0) CL0(a##1) CL0(a##2) CL0(a##3) CL0(a##4) CL0(a##5) \
 CL0(a##6) CL0(a##7) CL0(a##8) CL0(a##9)
 #define CL2(a) CL1(a##0) CL1(a##1) CL1(a##2) CL1(a##3) CL1(a##4) CL1(a##5) \
 CL1(a##6) CL1(a##7) CL1(a##8) CL1(a##9)
 #define CL3(a) CL2(a##0) CL2(a##1) CL2(a##2) CL2(a##3) CL2(a##4) CL2(a##5) \
 CL2(a##6) CL2(a##7) CL2(a##8) CL2(a##9)
 #define CL4(a) CL3(a##0) CL3(a##1) CL3(a##2) CL3(a##3) CL3(a##4) CL3(a##5) \
 CL3(a##6) CL3(a##7) CL3(a##8) CL3(a##9)

 void f();

 void a() {
     int b;
  c: switch (b) {
         CL4(1)
     }
 }

This comes from GCC PR 15524

llvm-svn: 17390

This speeds up simplifycfg on this program, from 44.87s to 0.29s (with
a profiled build):

 #define CL0(a) case a: goto c;
 #define CL1(a) CL0(a##0) CL0(a##1) CL0(a##2) CL0(a##3) CL0(a##4) CL0(a##5) \
 CL0(a##6) CL0(a##7) CL0(a##8) CL0(a##9)
 #define CL2(a) CL1(a##0) CL1(a##1) CL1(a##2) CL1(a##3) CL1(a##4) CL1(a##5) \
 CL1(a##6) CL1(a##7) CL1(a##8) CL1(a##9)
 #define CL3(a) CL2(a##0) CL2(a##1) CL2(a##2) CL2(a##3) CL2(a##4) CL2(a##5) \
 CL2(a##6) CL2(a##7) CL2(a##8) CL2(a##9)
 #define CL4(a) CL3(a##0) CL3(a##1) CL3(a##2) CL3(a##3) CL3(a##4) CL3(a##5) \
 CL3(a##6) CL3(a##7) CL3(a##8) CL3(a##9)

 void f();

 void a() {
     int b;
  c: switch (b) {
         CL4(1)
     }
 }

This testcase is contrived to expose N^2 behavior, but this patch should speedup
simplifycfg on any programs that use large switch statements.  This testcase
comes from GCC PR17895.

llvm-svn: 17389

llvm-svn: 17388

* *DO NOT* print CBU graphs when asked to print our own.  This is just
  FREAKING confusing and misleading: it's better to not print anything.
* Simplify and clean up some code
* Add some more paranoia assertion checking code that I found to track
  down this bug:
* Fix a nasty bug that was causing us to crash on Prolangs-C++/objects,
  where we were missing processing some graphs.  This hunk is the bugfix:

-    if (!I->isExternal() && !FoldedGraphsMap.count(I))
+    if (!I->isExternal() && !ValMap.count(I))

  urg!

llvm-svn: 17386

llvm-svn: 17385

llvm-svn: 17384

llvm-svn: 17383

llvm-svn: 17382

* Changed names of libraries to reflect new naming scheme
* Added some more introductory material
* Added a rule of thumb.

llvm-svn: 17381

llvm-svn: 17380

Chris wants on his platform.

llvm-svn: 17379

the CBU graphs, copy them instead of hacking on the CBU graphs.

Also, instead of forwarding request from ECGraphs clients to the CBU graphs
clients, service them ourselves.

Finally, remove a broken "optimization"

llvm-svn: 17378