Evan Cheng aaf414c92c Favors generating "not" over "xor -1". For example. ...

unsigned test(unsigned a) {
  return ~a;
}
llvm used to generate:
movl    $4294967295, %eax
xorl    4(%esp), %eax

Now it generates:
movl      4(%esp), %eax
notl      %eax

It's 3 bytes shorter.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62661 91177308-0d34-0410-b5e6-96231b3b80d8

2009-01-21 02:09:05 +00:00

..

Alpha

Fix Alpha test and support for private linkage.

2009-01-15 21:51:46 +00:00

ARM

Add the private linkage.

2009-01-15 20:18:42 +00:00

CBackend

Fix PR2907 by digging through constant expressions to find FP constants that

2008-10-22 04:53:16 +00:00

CellSPU

Add the private linkage.

2009-01-15 20:18:42 +00:00

CPP

…

Generic

Don't bother running the assembler, we don't know that it will be configured

2009-01-20 21:41:53 +00:00

IA64

Add the private linkage.

2009-01-15 20:18:42 +00:00

Mips

Add the private linkage.

2009-01-15 20:18:42 +00:00

PowerPC

Fix PPC ISD::Declare isel and eliminate the need for PPCTargetLowering::LowerGlobalAddress to check if isVerifiedDebugInfoDesc() is true. Given the recent changes, it would falsely return true for a lot of GlobalAddressSDNode's.

2009-01-16 22:57:32 +00:00

SPARC

Add the private linkage.

2009-01-15 20:18:42 +00:00

X86

Favors generating "not" over "xor -1". For example.

2009-01-21 02:09:05 +00:00

XCore

Add the private linkage.

2009-01-15 20:18:42 +00:00