Chris Lattner 145c532e68 Enhance SRoA to be more aggressive about scalarization of aggregate allocas ...

that have PHI or select uses of their element pointers.  This can often happen
when instcombine sinks two loads into a successor, inserting a phi or select.

With this patch, we can scalarize the alloca, but the pinned elements are not
yet promoted.  This is still a win for large aggregates where only one element
is used.  This fixes rdar://8904039 and part of rdar://7339113 (poor codegen
on stringswitch).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124070 91177308-0d34-0410-b5e6-96231b3b80d8

2011-01-23 08:27:54 +00:00

..

Hello

…

InstCombine

Just because we have determined that an (fcmp | fcmp) is true for A < B,

2011-01-21 19:39:42 +00:00

Instrumentation

…

IPO

Add unnamed_addr when we can show that address of a global is not used.

2011-01-19 16:32:21 +00:00

Scalar

Enhance SRoA to be more aggressive about scalarization of aggregate allocas

2011-01-23 08:27:54 +00:00

Utils

Convert two std::vectors to SmallVectors for a 3.4% speedup running -scalarrepl

2011-01-23 08:03:04 +00:00

Makefile

…