Remove the GetResultInst instruction. It is still accepted in LLVM assembly
and bitcode, where it is now auto-upgraded to ExtractValueInst. Also, remove
support for return instructions with multiple values. These are auto-upgraded
to use InsertValueInst instructions.

The IRBuilder still accepts multiple-value returns, and auto-upgrades them
to InsertValueInst instructions.

llvm-svn: 53941

llvm-svn: 51890

Since LCSSA switched over to DenseMap, we have to be more careful to avoid iterator invalidation.  Fixes PR2385.

llvm-svn: 51777

llvm-svn: 51565

use it instead of duplicating its functionality.

llvm-svn: 51499

Fix a bunch of 80col violations that arose from the Create API change. Tweak makefile targets to find these better.

llvm-svn: 51143

address of the PassInfo directly instead of calling getPassInfo.
This eliminates a bunch of dynamic initializations of static data.

Also, fold RegisterPassBase into PassInfo, make a bunch of its
data members const, and rearrange some code to initialize data
members in constructors instead of using setter member functions.

llvm-svn: 51022

several things that were neither in an anonymous namespace nor static
but not intended to be global.

llvm-svn: 51017

llvm-svn: 50604

Specifically, introduction of XXX::Create methods
for Users that have a potentially variable number of
Uses.

llvm-svn: 49277

llvm-svn: 47375

llvm-svn: 45418

llvm-svn: 41207

branch is not necessary immediate dominators of merge blcok in all cases.

llvm-svn: 41144

llvm-svn: 40604

llvm-svn: 40034

llvm-gcc build to succeed. Without this change it fails in libstdc++
compilation. This causes no regressions in dejagnu tests. However, 
someone who knows this code better might want to review it.

llvm-svn: 39924

llvm-svn: 39844

This adds redundancy for now.

llvm-svn: 37492

llvm-svn: 37407

llvm-svn: 37403

llvm-svn: 36994

llvm-svn: 36873

llvm-svn: 36662

Due to darwin gcc bug, one version of darwin linker coalesces
static const int, which defauts PassID based pass identification.

llvm-svn: 36652

llvm-svn: 36632

llvm-svn: 36258

llvm-svn: 36247

llvm-svn: 36017

the Transforms library. This reduces debug library size by 132 KB, debug
binary size by 376 KB, and reduces link time for llvm tools slightly.

llvm-svn: 33939

Revert last patch which caused iteration invalidation.

llvm-svn: 33901

llvm-svn: 33897

delete some dead ones.

llvm-svn: 32694

is 'unsigned'.

llvm-svn: 32279

Transforms/LCSSA/2006-10-31-UnreachableBlock-2.ll

llvm-svn: 31317

llvm-svn: 31315

llvm-svn: 29925

up lcssa much in practice.

llvm-svn: 29465

down approach, inspired by discussions with Tanya.

This approach is significantly faster, because it does not need dominator
frontiers and it does not insert extraneous unused PHI nodes.  For example, on
252.eon, in a release-asserts build, this speeds up LCSSA (which is the slowest
pass in gccas) from 9.14s to 0.74s on my G5.  This code is also slightly smaller
and significantly simpler than the old code.

Amusingly, in a normal Release build (which includes the
"assert(L->isLCSSAForm());" assertion), asserting that the result of LCSSA
is in LCSSA form is actually slower than the LCSSA transformation pass
itself on 252.eon.  I will see if Loop::isLCSSAForm can be sped up next.

llvm-svn: 29463

llvm-svn: 29078