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48c937e5c9
llvm/lib/Target
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Chris Lattner 48c937e5c9 Fix a minor bug in previous checking 
Enable folding of long seteq/setne comparisons into branches and select instructions
Implement unfolded long relational comparisons against a constants a bit more efficiently

Folding comparisons changes code that looks like this:
        mov %EAX, DWORD PTR [%ESP + 4]
        mov %EDX, DWORD PTR [%ESP + 8]
        mov %ECX, %EAX
        or %ECX, %EDX
        sete %CL
        test %CL, %CL
        je .LBB2 # PC rel: F

into code that looks like this:
        mov %EAX, DWORD PTR [%ESP + 4]
        mov %EDX, DWORD PTR [%ESP + 8]
        mov %ECX, %EAX
        or %ECX, %EDX
        jne .LBB2 # PC rel: F

This speeds up 186.crafty by 6% with llc-ls.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12702 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-06 17:34:50 +00:00
..
CBackend Add support for select constant expressions to the CBE, fixing SIOD 2004-04-01 05:28:26 +00:00
PowerPC fine grainify namespacification 2004-02-28 19:53:18 +00:00
Sparc Add support for many of the MRegisterInfo callbacks. 2004-04-02 20:53:37 +00:00
SparcV8 Add support for many of the MRegisterInfo callbacks. 2004-04-02 20:53:37 +00:00
SparcV9 In the perhaps not-to-distant future, we might support gep instructions that 2004-04-04 20:44:05 +00:00
X86 Fix a minor bug in previous checking 2004-04-06 17:34:50 +00:00
Makefile Remove ghostly directory from the build 2004-03-11 04:42:41 +00:00
MRegisterInfo.cpp Put all LLVM code into the llvm namespace, as per bug 109. 2003-11-11 22:41:34 +00:00
Target.td Expose the "Other" value type to tablegen targets 2004-02-11 03:08:45 +00:00
TargetData.cpp Support getelementptr instructions which use uint's to index into structure 2004-04-05 01:30:19 +00:00
TargetFrameInfo.cpp Move implementations of functions here, which avoids #including <cstdlib> in the 2004-03-11 23:52:43 +00:00
TargetInstrInfo.cpp Adjust to change in TII ctor arguments 2004-02-29 06:31:44 +00:00
TargetMachine.cpp make -print-machineinstrs work for both SparcV9 and X86 2004-03-04 19:16:23 +00:00
TargetSchedInfo.cpp Eliminate the distinction between "real" and "unreal" instructions 2004-02-29 06:31:16 +00:00